{"id":119622,"date":"2023-02-07T13:44:53","date_gmt":"2023-02-07T12:44:53","guid":{"rendered":"https:\/\/material-properties.org\/liga-de-magnesio-x-liga-de-titanio-comparacao-pros-e-contras\/"},"modified":"2023-02-08T09:27:46","modified_gmt":"2023-02-08T08:27:46","slug":"liga-de-magnesio-x-liga-de-titanio-comparacao-pros-e-contras","status":"publish","type":"post","link":"https:\/\/material-properties.org\/pt-br\/liga-de-magnesio-x-liga-de-titanio-comparacao-pros-e-contras\/","title":{"rendered":"Liga de Magn\u00e9sio x Liga de Tit\u00e2nio &#8211; Compara\u00e7\u00e3o &#8211; Pr\u00f3s e Contras"},"content":{"rendered":"<p><span style=\"\"><div class=\"su-quote su-quote-style-default\"><div class=\"su-quote-inner su-u-clearfix su-u-trim\">As ligas de magn\u00e9sio s\u00e3o muito leves e s\u00e3o normalmente usadas como ligas fundidas.&nbsp;As ligas de tit\u00e2nio t\u00eam resist\u00eancia \u00e0 corros\u00e3o muito alta e rela\u00e7\u00e3o resist\u00eancia-densidade, a mais alta de qualquer elemento met\u00e1lico.&nbsp;Liga de Magn\u00e9sio vs Liga de Tit\u00e2nio<\/div><\/div><\/span><\/p>\n<p><span style=\"\"><div class=\"su-divider su-divider-style-dotted\" style=\"margin:15px 0;border-width:2px;border-color:#999999\"><\/div><\/span><\/p>\n<p><span style=\"\"><div  class=\"lgc-column lgc-grid-parent lgc-grid-100 lgc-tablet-grid-100 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<h2><span style=\"\">Ligas de Magn\u00e9sio<\/span><\/h2>\n<p><span style=\"\">O magn\u00e9sio puro \u00e9 um s\u00f3lido cinza brilhante que tem uma grande semelhan\u00e7a f\u00edsica com os outros cinco elementos da segunda coluna (grupo 2, ou metais alcalino-terrosos) da tabela peri\u00f3dica.<\/span><\/p>\n<p><strong><a href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/magnesium-alloy-elektron-image-min.png\" data-mce-href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/magnesium-alloy-elektron-image-min.png\"><img decoding=\"async\" loading=\"lazy\" class=\"alignright size-medium wp-image-29738\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/magnesium-alloy-elektron-image-min-300x300.png\" sizes=\"(max-width: 300px) 100vw, 300px\" srcset=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/magnesium-alloy-elektron-image-min-300x300.png 300w, https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/magnesium-alloy-elektron-image-min-150x150.png 150w, https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/magnesium-alloy-elektron-image-min-768x768.png 768w, https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/magnesium-alloy-elektron-image-min.png 1000w\" alt=\"Ligas de magn\u00e9sio\" width=\"300\" height=\"300\" data-mce-src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/magnesium-alloy-elektron-image-min-300x300.png\"\/><\/a><a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/metals-what-are-metals\/alloys-composition-properties-of-metal-alloys\/magnesium-alloys\/\" data-mce-href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/metals-what-are-metals\/alloys-composition-properties-of-metal-alloys\/magnesium-alloys\/\"><span style=\"\">Ligas de magn\u00e9sio<\/span><\/a><\/strong><span style=\"\"> s\u00e3o misturas de magn\u00e9sio e outros metais de liga, geralmente alum\u00ednio, zinco, sil\u00edcio, mangan\u00eas, cobre e zirc\u00f4nio.&nbsp;Como a caracter\u00edstica mais not\u00e1vel do magn\u00e9sio \u00e9 sua <\/span><strong><span style=\"\">densidade, 1,7 g\/cm<\/span><sup><span style=\"\">3<\/span><\/sup><\/strong><span style=\"\">, suas ligas s\u00e3o usadas onde o peso leve \u00e9 \u200b\u200buma considera\u00e7\u00e3o importante (por exemplo, em componentes de aeronaves).&nbsp;O magn\u00e9sio tem o <\/span><strong><span style=\"\">ponto de fus\u00e3o mais baixo<\/span><\/strong><span style=\"\"> (923 K (1202 \u00b0F)) de todos os metais alcalino-terrosos.&nbsp;O magn\u00e9sio puro tem uma estrutura cristalina HCP, \u00e9 relativamente macio e tem um baixo m\u00f3dulo de elasticidade: 45 GPa.&nbsp;As ligas de magn\u00e9sio tamb\u00e9m possuem uma estrutura treli\u00e7ada hexagonal, que afeta as propriedades fundamentais dessas ligas.&nbsp;\u00c0 temperatura ambiente, o magn\u00e9sio e suas ligas s\u00e3o dif\u00edceis de realizar trabalho a frio devido ao fato de que a deforma\u00e7\u00e3o pl\u00e1stica da rede hexagonal \u00e9 mais complicada do que em metais de rede c\u00fabica como alum\u00ednio, cobre e a\u00e7o.&nbsp;Portanto, as ligas de magn\u00e9sio s\u00e3o normalmente usadas como <\/span><strong><span style=\"\">ligas fundidas<\/span><\/strong><span style=\"\">.&nbsp;Apesar da natureza reativa do p\u00f3 de magn\u00e9sio puro, o magn\u00e9sio met\u00e1lico e suas ligas t\u00eam boa resist\u00eancia \u00e0 corros\u00e3o.<\/span><\/p>\n<p><span style=\"\">O alum\u00ednio \u00e9 o elemento de liga mais comum.&nbsp;Alum\u00ednio, zinco, zirc\u00f4nio e t\u00f3rio promovem o endurecimento por precipita\u00e7\u00e3o: o mangan\u00eas melhora a resist\u00eancia \u00e0 corros\u00e3o;&nbsp;e o estanho melhora a fundibilidade.<\/span><\/p>\n<p><span style=\"\">Devemos acrescentar que o magn\u00e9sio puro \u00e9 <\/span><strong><span style=\"\">altamente inflam\u00e1vel<\/span><\/strong><span style=\"\">, especialmente quando em p\u00f3 ou raspado em tiras finas, embora seja dif\u00edcil de inflamar em massa ou a granel. Produz luz branca intensa e brilhante quando queima. As temperaturas de chama do magn\u00e9sio e de algumas ligas de magn\u00e9sio podem atingir 3100\u00b0C. O magn\u00e9sio fundido ou queimado reage violentamente com a \u00e1gua. Uma vez acesos, esses inc\u00eandios s\u00e3o dif\u00edceis de extinguir, porque a combust\u00e3o continua em nitrog\u00eanio (formando nitreto de magn\u00e9sio), di\u00f3xido de carbono (formando \u00f3xido de magn\u00e9sio e carbono) e \u00e1gua. A queima de magn\u00e9sio pode ser extinta usando um extintor de p\u00f3 qu\u00edmico seco Classe D. Sua inflamabilidade \u00e9 bastante reduzida por uma pequena quantidade de c\u00e1lcio na liga.<\/span><\/p>\n<p><a href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/magnesium-alloy-elektron-21-composition.png\" data-mce-href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/magnesium-alloy-elektron-21-composition.png\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-29752\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/magnesium-alloy-elektron-21-composition.png\" sizes=\"(max-width: 916px) 100vw, 916px\" srcset=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/magnesium-alloy-elektron-21-composition.png 916w, https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/magnesium-alloy-elektron-21-composition-300x38.png 300w, https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/magnesium-alloy-elektron-21-composition-768x97.png 768w\" alt=\"Liga de magn\u00e9sio\" width=\"916\" height=\"116\" data-mce-src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/magnesium-alloy-elektron-21-composition.png\"\/><\/a><\/p>\n<h2><span id=\"Uses_of_Magnesium_Alloys_8211_Application\"><span style=\"\">Usos de Ligas de Magn\u00e9sio &#8211; Aplica\u00e7\u00e3o<\/span><\/span><\/h2>\n<figure id=\"attachment_29428\" class=\"wp-caption alignright\"><a href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/forged-magnesium-wheels-min.png\" data-mce-href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/forged-magnesium-wheels-min.png\"><img decoding=\"async\" loading=\"lazy\" class=\"size-medium wp-image-29428\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/forged-magnesium-wheels-min-300x194.png\" sizes=\"(max-width: 300px) 100vw, 300px\" srcset=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/forged-magnesium-wheels-min-300x194.png 300w, https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/forged-magnesium-wheels-min.png 622w\" alt=\"Ligas de magn\u00e9sio\" width=\"300\" height=\"194\" data-mce-src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/forged-magnesium-wheels-min-300x194.png\"\/><\/a><figcaption class=\"wp-caption-text\"><span style=\"\">Rodas forjadas de magn\u00e9sio<\/span><\/figcaption><\/figure>\n<p><strong><span style=\"\">As ligas de magn\u00e9sio<\/span><\/strong><span style=\"\"> s\u00e3o usadas em uma ampla variedade de aplica\u00e7\u00f5es estruturais e n\u00e3o estruturais.&nbsp;As aplica\u00e7\u00f5es estruturais incluem equipamentos automotivos, industriais, de manuseio de materiais, comerciais e aeroespaciais.&nbsp;As ligas de magn\u00e9sio s\u00e3o usadas para pe\u00e7as que operam em altas velocidades e, portanto, devem ser leves para minimizar as for\u00e7as de in\u00e9rcia.&nbsp;As aplica\u00e7\u00f5es comerciais incluem ferramentas port\u00e1teis, laptops, malas e escadas, autom\u00f3veis (por exemplo, volantes e colunas, estruturas de assentos, caixas de transmiss\u00e3o).&nbsp;Magnox (liga), cujo nome \u00e9 uma abrevia\u00e7\u00e3o de \u201cmagn\u00e9sio n\u00e3o oxidante\u201d, \u00e9 99% de magn\u00e9sio e 1% de alum\u00ednio, e \u00e9 usado no revestimento de varetas de combust\u00edvel em reatores de energia nuclear magnox.<\/span><\/p>\n<h2><span style=\"\">Ligas de Tit\u00e2nio<\/span><\/h2>\n<p><a href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/titanium-grade-5-image-min.png\" data-mce-href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/titanium-grade-5-image-min.png\"><img decoding=\"async\" loading=\"lazy\" class=\"alignright size-medium wp-image-29423\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/titanium-grade-5-image-min-300x300.png\" alt=\"Liga de tit\u00e2nio\" width=\"300\" height=\"300\" data-mce-src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/titanium-grade-5-image-min-300x300.png\"\/><\/a><span style=\"\">O tit\u00e2nio puro \u00e9 mais forte que os a\u00e7os comuns de baixo teor de carbono, mas 45% mais leve.&nbsp;Tamb\u00e9m \u00e9 duas vezes mais forte que <\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/metals-what-are-metals\/alloys-composition-properties-of-metal-alloys\/aluminium-alloys\/\" data-mce-href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/metals-what-are-metals\/alloys-composition-properties-of-metal-alloys\/aluminium-alloys\/\"><span style=\"\">as ligas de alum\u00ednio<\/span><\/a><span style=\"\"> fracas, mas apenas 60% mais pesadas.&nbsp;As duas propriedades mais \u00fateis do metal s\u00e3o <\/span><strong><span style=\"\">a resist\u00eancia \u00e0 corros\u00e3o<\/span><\/strong><span style=\"\"> e&nbsp;<\/span><strong><span style=\"\">a rela\u00e7\u00e3o resist\u00eancia-densidade<\/span><\/strong><span style=\"\">, o mais alto de qualquer elemento met\u00e1lico.&nbsp;A resist\u00eancia \u00e0 corros\u00e3o das ligas de tit\u00e2nio em temperaturas normais \u00e9 excepcionalmente alta.&nbsp;A resist\u00eancia \u00e0 corros\u00e3o do tit\u00e2nio \u00e9 baseada na forma\u00e7\u00e3o de uma camada de \u00f3xido protetora est\u00e1vel.&nbsp;Embora o tit\u00e2nio \u201ccomercialmente puro\u201d tenha propriedades mec\u00e2nicas aceit\u00e1veis \u200b\u200be tenha sido usado para implantes ortop\u00e9dicos e dent\u00e1rios, para a maioria das aplica\u00e7\u00f5es o tit\u00e2nio \u00e9 ligado com pequenas quantidades de alum\u00ednio e van\u00e1dio, normalmente 6% e 4%, respectivamente, em peso.&nbsp;Esta mistura tem uma solubilidade s\u00f3lida que varia drasticamente com a temperatura, permitindo que ela sofra <\/span><strong><span style=\"\">um refor\u00e7o de precipita\u00e7\u00e3o<\/span><\/strong><span style=\"\">.<\/span><\/p>\n<p><a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/metals-what-are-metals\/alloys-composition-properties-of-metal-alloys\/titanium-alloys\/\" data-mce-href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/metals-what-are-metals\/alloys-composition-properties-of-metal-alloys\/titanium-alloys\/\"><strong><span style=\"\">As ligas de tit\u00e2nio<\/span><\/strong><\/a><span style=\"\"> s\u00e3o metais que cont\u00eam uma mistura de tit\u00e2nio e outros elementos qu\u00edmicos.&nbsp;Essas ligas t\u00eam resist\u00eancia \u00e0 tra\u00e7\u00e3o e tenacidade muito altas (mesmo em temperaturas extremas).&nbsp;Eles s\u00e3o leves, t\u00eam<\/span><strong><span style=\"\">&nbsp;extraordin\u00e1ria resist\u00eancia \u00e0 corros\u00e3o<\/span><\/strong><span style=\"\"> e a capacidade de suportar temperaturas extremas.<\/span><\/p>\n<h3><span style=\"\">Grau 2<\/span><\/h3>\n<p><span style=\"\">O tit\u00e2nio comercialmente puro grau 2 \u00e9 muito semelhante ao grau 1, mas tem maior resist\u00eancia do que o grau 1 e excelentes propriedades de conforma\u00e7\u00e3o a frio.&nbsp;Ele fornece excelentes propriedades de soldagem e tem excelente resist\u00eancia \u00e0 oxida\u00e7\u00e3o e corros\u00e3o.&nbsp;Este grau de tit\u00e2nio \u00e9 o grau mais comum da ind\u00fastria de tit\u00e2nio comercialmente puro.&nbsp;\u00c9 a escolha principal para muitos campos de aplica\u00e7\u00f5es:<\/span><\/p>\n<ul>\n<li><span style=\"\">aeroespacial<\/span><\/li>\n<li><span style=\"\">Automotivo<\/span><\/li>\n<li><span style=\"\">Processamento qu\u00edmico e fabrica\u00e7\u00e3o de clorato<\/span><\/li>\n<li><span style=\"\">Dessaliniza\u00e7\u00e3o<\/span><\/li>\n<li><span style=\"\">Gera\u00e7\u00e3o de energia<\/span><\/li>\n<\/ul>\n<h3><span style=\"\">Grau 5 &#8211; Ti-6Al-4V<\/span><\/h3>\n<p><span style=\"\">Grau 5 \u00e9 a liga mais comumente usada e \u00e9 uma liga alfa + beta.&nbsp;A liga de grau 5 \u00e9 respons\u00e1vel por 50% do uso total de tit\u00e2nio em todo o mundo.&nbsp;Tem uma composi\u00e7\u00e3o qu\u00edmica de 6% de alum\u00ednio, 4% de van\u00e1dio, 0,25% (m\u00e1ximo) de ferro, 0,2% (m\u00e1ximo) de oxig\u00eanio e o restante de tit\u00e2nio.&nbsp;Geralmente, o Ti-6Al-4V \u00e9 usado em aplica\u00e7\u00f5es de at\u00e9 400 graus Celsius.&nbsp;Tem uma densidade de aproximadamente 4420 kg\/m<\/span><sup><span style=\"\">3<\/span><\/sup><span style=\"\">.&nbsp;\u00c9 significativamente mais forte que o tit\u00e2nio comercialmente puro (graus 1-4) devido \u00e0 possibilidade de ser tratado termicamente.&nbsp;Esta classe \u00e9 uma excelente combina\u00e7\u00e3o de for\u00e7a, resist\u00eancia \u00e0 corros\u00e3o, solda e capacidade de fabrica\u00e7\u00e3o. \u00c9 a escolha principal para muitos campos de aplica\u00e7\u00f5es:<\/span><\/p>\n<ul>\n<li><span style=\"\">turbinas de aeronaves<\/span><\/li>\n<li><span style=\"\">Componentes do motor<\/span><\/li>\n<li><span style=\"\">Componentes estruturais de aeronaves<\/span><\/li>\n<li><span style=\"\">Fechos aeroespaciais<\/span><\/li>\n<li><span style=\"\">Pe\u00e7as autom\u00e1ticas de alto desempenho<\/span><\/li>\n<li><span style=\"\">Aplica\u00e7\u00f5es mar\u00edtimas<\/span><\/li>\n<\/ul>\n<h2><span id=\"Application_of_Titanium_Alloys_Uses\"><span style=\"\">Aplica\u00e7\u00e3o de Ligas de Tit\u00e2nio &#8211; Usos<\/span><\/span><\/h2>\n<p><span style=\"\">As duas propriedades mais \u00fateis do metal s\u00e3o <\/span><strong><span style=\"\">a resist\u00eancia \u00e0 corros\u00e3o<\/span><\/strong><span style=\"\">&nbsp;e&nbsp;<\/span><strong><span style=\"\">a rela\u00e7\u00e3o resist\u00eancia-densidade<\/span><\/strong><span style=\"\">, a mais alta de qualquer elemento met\u00e1lico.&nbsp;A resist\u00eancia \u00e0 corros\u00e3o das ligas de tit\u00e2nio em temperaturas normais \u00e9 excepcionalmente alta.&nbsp;Essas propriedades determinam a aplica\u00e7\u00e3o do tit\u00e2nio e suas ligas.&nbsp;A primeira aplica\u00e7\u00e3o de produ\u00e7\u00e3o de tit\u00e2nio foi em 1952, para as naceles e firewalls do Douglas DC-7.&nbsp;Alta resist\u00eancia espec\u00edfica, boa resist\u00eancia \u00e0 fadiga e vida \u00fatil \u00e0 flu\u00eancia e boa tenacidade \u00e0 fratura s\u00e3o caracter\u00edsticas que tornam o tit\u00e2nio um metal preferido para <\/span><strong><span style=\"\">aplica\u00e7\u00f5es aeroespaciais<\/span><\/strong><span style=\"\">.&nbsp;Aplica\u00e7\u00f5es aeroespaciais, incluindo o uso em componentes estruturais (c\u00e9lula) e motores a jato, ainda representam a maior parte do uso da liga de tit\u00e2nio.&nbsp;No&nbsp;<\/span><strong><span style=\"\">aeronave supers\u00f4nica SR-71<\/span><\/strong><span style=\"\">, o tit\u00e2nio foi usado em 85% da estrutura.&nbsp;Devido \u00e0 in\u00e9rcia muito alta, o tit\u00e2nio tem muitas aplica\u00e7\u00f5es biom\u00e9dicas, que se baseiam em sua in\u00e9rcia no corpo humano, ou seja, resist\u00eancia \u00e0 corros\u00e3o por fluidos corporais.<\/span><\/p>\n<h2><span style=\"\">Propriedades da Liga de Magn\u00e9sio vs Liga de Tit\u00e2nio<\/span><\/h2>\n<p><strong><span style=\"\">As propriedades dos materiais<\/span><\/strong><span style=\"\">&nbsp;s\u00e3o propriedades&nbsp;<\/span><strong><span style=\"\">intensivas<\/span><\/strong><span style=\"\">, ou seja,&nbsp;<\/span><strong><span style=\"\">independem da quantidade<\/span><\/strong><span style=\"\">&nbsp;de massa e podem variar de um lugar para outro dentro do sistema a qualquer momento.&nbsp;A base da ci\u00eancia dos materiais envolve estudar a estrutura dos materiais e relacion\u00e1-los com suas propriedades (mec\u00e2nicas, el\u00e9tricas, etc.).&nbsp;Uma vez que um cientista de materiais conhe\u00e7a essa correla\u00e7\u00e3o estrutura-propriedade, ele poder\u00e1 estudar o desempenho relativo de um material em uma determinada aplica\u00e7\u00e3o.&nbsp;Os principais determinantes da estrutura de um material e, portanto, de suas propriedades s\u00e3o seus elementos qu\u00edmicos constituintes e a maneira como ele foi processado em sua forma final.<\/span><\/p>\n<h3><span id=\"Density_of_Titanium_Alloys\"><span style=\"\">Densidade da Liga de Magn\u00e9sio vs Liga de Tit\u00e2nio<\/span><\/span><\/h3>\n<p><span style=\"\">A densidade da&nbsp;<\/span><strong><span style=\"\">liga de magn\u00e9sio t\u00edpica<\/span><\/strong><span style=\"\"> \u00e9 de 1,8 g\/cm<\/span><sup><span style=\"\">3<\/span><\/sup><span style=\"\">&nbsp;(Elektron 21).<\/span><\/p>\n<p><span style=\"\">A densidade da&nbsp;<\/span><strong><span style=\"\">liga de tit\u00e2nio t\u00edpica<\/span><\/strong><span style=\"\"> \u00e9 de 4,43 g\/cm<\/span><sup><span style=\"\">3<\/span><\/sup><span style=\"\">&nbsp;(Ti-6Al-4V).<\/span><\/p>\n<p><strong><span style=\"\">A densidade<\/span><\/strong><span style=\"\"> \u00e9 definida como a&nbsp;<\/span><strong><span style=\"\">massa por unidade de volume<\/span><\/strong><span style=\"\">.&nbsp;\u00c9 uma <\/span><strong><span style=\"\">propriedade intensiva<\/span><\/strong><span style=\"\">, que \u00e9 matematicamente definida como massa dividida por volume:<\/span><\/p>\n<p><strong><span style=\"\">\u03c1 = m\/V<\/span><\/strong><\/p>\n<p><span style=\"\">Em palavras, a densidade (\u03c1) de uma subst\u00e2ncia \u00e9 a massa total (m) dessa subst\u00e2ncia dividida pelo volume total (V) ocupado por essa subst\u00e2ncia.&nbsp;A unidade SI padr\u00e3o \u00e9 <\/span><strong><span style=\"\">quilogramas por metro c\u00fabico<\/span><\/strong><span style=\"\"> (<\/span><strong><span style=\"\">kg\/m<\/span><sup><span style=\"\">3<\/span><\/sup><\/strong><span style=\"\">).&nbsp;A unidade padr\u00e3o inglesa \u00e9 <\/span><strong><span style=\"\">libras-massa por p\u00e9 c\u00fabico<\/span><\/strong><span style=\"\"> (<\/span><strong><span style=\"\">lbm\/ft<\/span><sup><span style=\"\">3<\/span><\/sup><\/strong><span style=\"\">).<\/span><\/p>\n<p><span style=\"\">Como a densidade (\u03c1) de uma subst\u00e2ncia \u00e9 a massa total (m) dessa subst\u00e2ncia dividida pelo volume total (V) ocupado por essa subst\u00e2ncia, \u00e9 \u00f3bvio que a densidade de uma subst\u00e2ncia depende fortemente de sua massa at\u00f4mica e tamb\u00e9m de <\/span><strong><span style=\"\">a densidade do n\u00famero at\u00f4mico<\/span><\/strong><span style=\"\"> (N; \u00e1tomos\/cm<\/span><sup><span style=\"\">3<\/span><\/sup><span style=\"\">),<\/span><\/p>\n<ul>\n<li><strong><span style=\"\">Peso At\u00f4mico<\/span><\/strong><span style=\"\">.&nbsp;A massa at\u00f4mica \u00e9 transportada pelo n\u00facleo at\u00f4mico, que ocupa apenas cerca de 10<\/span><sup><span style=\"\">-12 <\/span><\/sup><span style=\"\">do volume total do \u00e1tomo ou menos, mas cont\u00e9m toda a carga positiva e pelo menos 99,95% da massa total do \u00e1tomo.&nbsp;Portanto, \u00e9 determinado pelo n\u00famero de massa (n\u00famero de pr\u00f3tons e n\u00eautrons).<\/span><\/li>\n<li><strong><span style=\"\">Densidade de N\u00famero At\u00f4mico<\/span><\/strong><span style=\"\">.&nbsp;A <\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/nuclear-engineering-fundamentals\/neutron-nuclear-reactions\/atomic-number-density\/\" data-mce-href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/nuclear-engineering-fundamentals\/neutron-nuclear-reactions\/atomic-number-density\/\"><span style=\"\">densidade de n\u00famero at\u00f4mico<\/span><\/a><span style=\"\"> (N; \u00e1tomos\/cm<\/span><sup><span style=\"\">3<\/span><\/sup><span style=\"\">), que est\u00e1 associada aos raios at\u00f4micos, \u00e9 o n\u00famero de \u00e1tomos de um determinado tipo por unidade de volume (V; cm<\/span><sup><span style=\"\">3<\/span><\/sup><span style=\"\">) do material. A densidade do n\u00famero at\u00f4mico (N; \u00e1tomos\/cm<\/span><sup><span style=\"\">3<\/span><\/sup><span style=\"\">) de um material puro com <\/span><strong><span style=\"\">peso at\u00f4mico ou molecular <\/span><\/strong><span style=\"\">(M; gramas\/mol) e a <\/span><strong><span style=\"\">densidade do material<\/span><\/strong><span style=\"\"> (\u2374; grama\/cm<\/span><sup><span style=\"\">3<\/span><\/sup><span style=\"\">) \u00e9 facilmente calculada a partir da seguinte equa\u00e7\u00e3o usando o n\u00famero de Avogadro (<\/span><strong><span style=\"\">N<sub>A<\/sub> = 6,022<\/span><span style=\"\">&nbsp;\u00d710<\/span><sup><span style=\"\">23<\/span><\/sup><\/strong><span style=\"\">&nbsp;\u00e1tomos ou mol\u00e9culas por mol):<\/span><a href=\"https:\/\/www.nuclear-power.com\/wp-content\/uploads\/2015\/12\/Atomic-Number-Density.png\" data-mce-href=\"https:\/\/www.nuclear-power.com\/wp-content\/uploads\/2015\/12\/Atomic-Number-Density.png\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-13442 lazy-loaded\" src=\"https:\/\/www.nuclear-power.com\/wp-content\/uploads\/2015\/12\/Atomic-Number-Density.png\" alt=\"Densidade do N\u00famero At\u00f4mico\" width=\"166\" height=\"69\" data-lazy-type=\"image\" data-src=\"https:\/\/www.nuclear-power.com\/wp-content\/uploads\/2015\/12\/Atomic-Number-Density.png\" data-mce-src=\"https:\/\/www.nuclear-power.com\/wp-content\/uploads\/2015\/12\/Atomic-Number-Density.png\"\/><\/a><\/li>\n<li><strong><span style=\"\">Estrutura de cristal.&nbsp;<\/span><\/strong><span style=\"\">A densidade da subst\u00e2ncia cristalina \u00e9 significativamente afetada por sua estrutura cristalina.&nbsp;A estrutura FCC, junto com seu parente hexagonal (hcp), tem o fator de empacotamento mais eficiente (74%).&nbsp;Metais contendo estruturas FCC incluem austenita, alum\u00ednio, cobre, chumbo, prata, ouro, n\u00edquel, platina e t\u00f3rio.<\/span><\/li>\n<\/ul>\n<h3><span style=\"\">Propriedades Mec\u00e2nicas da Liga de Magn\u00e9sio vs Liga de Tit\u00e2nio<\/span><\/h3>\n<p><span style=\"\">Os materiais s\u00e3o freq\u00fcentemente escolhidos para v\u00e1rias aplica\u00e7\u00f5es porque possuem combina\u00e7\u00f5es desej\u00e1veis \u200b\u200bde caracter\u00edsticas mec\u00e2nicas.&nbsp;Para aplica\u00e7\u00f5es estruturais, as propriedades do material s\u00e3o cruciais e os engenheiros devem lev\u00e1-las em considera\u00e7\u00e3o.<\/span><\/p>\n<h3><span style=\"\">Resist\u00eancia da Liga de Magn\u00e9sio vs Liga de Tit\u00e2nio<\/span><\/h3>\n<p><span style=\"\">Na mec\u00e2nica dos materiais, a&nbsp;<\/span><a href=\"https:\/\/material-properties.org\/what-is-strength-definition\/\" data-mce-href=\"https:\/\/material-properties.org\/what-is-strength-definition\/\"><strong><span style=\"\">resist\u00eancia de um material<\/span><\/strong><\/a><span style=\"\">&nbsp;\u00e9 sua capacidade de suportar uma carga aplicada sem falha ou deforma\u00e7\u00e3o pl\u00e1stica.&nbsp;<\/span><strong><span style=\"\">A resist\u00eancia dos materiais<\/span><\/strong><span style=\"\">&nbsp;considera basicamente a rela\u00e7\u00e3o entre as&nbsp;<\/span><strong><span style=\"\">cargas externas<\/span><\/strong><span style=\"\">&nbsp;aplicadas a um material e a&nbsp;<\/span><strong><span style=\"\">deforma\u00e7\u00e3o<\/span><\/strong><span style=\"\">&nbsp;resultante ou mudan\u00e7a nas dimens\u00f5es do material.&nbsp;<\/span><strong><span style=\"\">A resist\u00eancia de um material<\/span><\/strong><span style=\"\">&nbsp;\u00e9 sua capacidade de suportar essa carga aplicada sem falha ou deforma\u00e7\u00e3o pl\u00e1stica.<\/span><\/p>\n<h3><span style=\"\">Resist\u00eancia \u00e0 tra\u00e7\u00e3o<\/span><\/h3>\n<p><span style=\"\">A resist\u00eancia \u00e0 tra\u00e7\u00e3o final do&nbsp;<\/span><strong><span style=\"\">Elektron 21 &#8211; UNS M12310<\/span><\/strong><span style=\"\">&nbsp;\u00e9 de cerca de 280 MPa.<\/span><\/p>\n<p><span style=\"\">A resist\u00eancia \u00e0 tra\u00e7\u00e3o final da&nbsp;<\/span><strong><span style=\"\">liga de tit\u00e2nio Ti-6Al-4V \u2013 Grau 5<\/span><\/strong><span style=\"\">&nbsp;\u00e9 de cerca de 1170 MPa.<\/span><\/p>\n<p><a href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/01\/Yield-Strength-Ultimate-Tensile-Strength-Table-of-Materials.png\" data-mce-href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/01\/Yield-Strength-Ultimate-Tensile-Strength-Table-of-Materials.png\"><img decoding=\"async\" loading=\"lazy\" class=\"alignright size-medium wp-image-27807\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/01\/Yield-Strength-Ultimate-Tensile-Strength-Table-of-Materials-239x300.png\" alt=\"Resist\u00eancia ao escoamento - Resist\u00eancia \u00e0 tra\u00e7\u00e3o m\u00e1xima - Tabela de materiais\" width=\"239\" height=\"300\" data-mce-src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/01\/Yield-Strength-Ultimate-Tensile-Strength-Table-of-Materials-239x300.png\"\/><\/a><span style=\"\">A&nbsp;<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/materials-science\/material-properties\/strength\/stress-strain-curve-stress-strain-diagram\/ultimate-tensile-strength-uts\/\" data-mce-href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/materials-science\/material-properties\/strength\/stress-strain-curve-stress-strain-diagram\/ultimate-tensile-strength-uts\/\"><strong><span style=\"\">resist\u00eancia \u00e0 tra\u00e7\u00e3o final<\/span><\/strong><\/a><span style=\"\">&nbsp;\u00e9 o m\u00e1ximo na&nbsp;<\/span><a href=\"https:\/\/material-properties.org\/what-is-stress-strain-curve-stress-strain-diagram-definition\/\" data-mce-href=\"https:\/\/material-properties.org\/what-is-stress-strain-curve-stress-strain-diagram-definition\/\"><span style=\"\">curva de tens\u00e3o-deforma\u00e7\u00e3o de<\/span><\/a><span style=\"\"><a data-mce-href=\"https:\/\/material-properties.org\/what-is-stress-strain-curve-stress-strain-diagram-definition\/\" href=\"https:\/\/material-properties.org\/what-is-stress-strain-curve-stress-strain-diagram-definition\/\"> engenharia<\/a>.&nbsp;Isso corresponde \u00e0&nbsp;<\/span><strong><span style=\"\">tens\u00e3o m\u00e1xima <\/span><\/strong><span style=\"\">que pode ser sustentado por uma estrutura em tens\u00e3o. A resist\u00eancia \u00e0 tra\u00e7\u00e3o final \u00e9 muitas vezes abreviada para \u201cresist\u00eancia \u00e0 tra\u00e7\u00e3o\u201d ou mesmo para \u201co m\u00e1ximo\u201d. Se essa tens\u00e3o for aplicada e mantida, ocorrer\u00e1 fratura. Freq\u00fcentemente, esse valor \u00e9 significativamente maior do que o limite de escoamento (at\u00e9 50 a 60 por cento a mais do que o rendimento de alguns tipos de metais). Quando um material d\u00factil atinge sua resist\u00eancia m\u00e1xima, ele sofre estric\u00e7\u00e3o onde a \u00e1rea da se\u00e7\u00e3o transversal \u00e9 reduzida localmente. A curva tens\u00e3o-deforma\u00e7\u00e3o n\u00e3o cont\u00e9m tens\u00e3o maior do que a resist\u00eancia m\u00e1xima. Mesmo que as deforma\u00e7\u00f5es possam continuar a aumentar, a tens\u00e3o geralmente diminui ap\u00f3s o limite de resist\u00eancia ter sido alcan\u00e7ado. \u00c9 uma propriedade intensiva; portanto, seu valor n\u00e3o depende do tamanho do corpo de prova. Por\u00e9m, depende de outros fatores, como o preparo do corpo de prova,&nbsp;<\/span><strong><span style=\"\">temperatura<\/span><\/strong><span style=\"\">&nbsp;do ambiente de teste e do material.&nbsp;<\/span><strong><span style=\"\">A resist\u00eancia m\u00e1xima \u00e0 tra\u00e7\u00e3o<\/span><\/strong><span style=\"\">&nbsp;varia de 50 MPa para um alum\u00ednio at\u00e9 3000 MPa para a\u00e7os de alta resist\u00eancia.<\/span><\/p>\n<h3><span id=\"Yield_Strength\"><span style=\"\">For\u00e7a de Rendimento<\/span><\/span><\/h3>\n<p><span style=\"\">A resist\u00eancia ao escoamento do&nbsp;<\/span><strong><span style=\"\">Elektron 21 &#8211; UNS M12310<\/span><\/strong><span style=\"\">&nbsp;\u00e9 de cerca de 145 MPa.<\/span><\/p>\n<p><span style=\"\">A resist\u00eancia&nbsp;<\/span><strong><span style=\"\">ao escoamento da liga de tit\u00e2nio Ti-6Al-4V \u2013 Grau 5<\/span><\/strong><span style=\"\">&nbsp;\u00e9 de cerca de 1100 MPa.<\/span><\/p>\n<p><span style=\"\">O <\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/materials-science\/material-properties\/strength\/stress-strain-curve-stress-strain-diagram\/yield-strength-yield-point\/\" data-mce-href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/materials-science\/material-properties\/strength\/stress-strain-curve-stress-strain-diagram\/yield-strength-yield-point\/\"><strong><span style=\"\">ponto de escoamento<\/span><\/strong><\/a><span style=\"\"> \u00e9 o ponto em uma <\/span><a href=\"https:\/\/material-properties.org\/what-is-stress-strain-curve-stress-strain-diagram-definition\/\" data-mce-href=\"https:\/\/material-properties.org\/what-is-stress-strain-curve-stress-strain-diagram-definition\/\"><span style=\"\">curva tens\u00e3o-deforma\u00e7\u00e3o<\/span><\/a><span style=\"\"> que indica o limite do comportamento el\u00e1stico e o in\u00edcio do comportamento pl\u00e1stico.&nbsp;<\/span><strong><span style=\"\">For\u00e7a de rendimento<\/span><\/strong><span style=\"\">&nbsp;ou tens\u00e3o de escoamento \u00e9 a propriedade do material definida como a tens\u00e3o na qual um material come\u00e7a a se deformar plasticamente, enquanto o ponto de escoamento \u00e9 o ponto onde come\u00e7a a deforma\u00e7\u00e3o n\u00e3o linear (el\u00e1stica + pl\u00e1stica).&nbsp;Antes do ponto de escoamento, o material se deformar\u00e1 elasticamente e retornar\u00e1 \u00e0 sua forma original quando a tens\u00e3o aplicada for removida.&nbsp;Uma vez ultrapassado o ponto de escoamento, alguma fra\u00e7\u00e3o da deforma\u00e7\u00e3o ser\u00e1 permanente e irrevers\u00edvel.&nbsp;Alguns a\u00e7os e outros materiais exibem um comportamento denominado fen\u00f4meno do ponto de escoamento.&nbsp;As resist\u00eancias ao escoamento variam de 35 MPa para um alum\u00ednio de baixa resist\u00eancia a mais de 1400 MPa para a\u00e7os de resist\u00eancia muito alta.<\/span><\/p>\n<h3><span style=\"\">M\u00f3dulo de elasticidade de Young<\/span><\/h3>\n<p><span style=\"\">O m\u00f3dulo de elasticidade de Young do&nbsp;<\/span><strong><span style=\"\">Elektron 21 &#8211; UNS M12310<\/span><\/strong><span style=\"\">&nbsp;\u00e9 de cerca de 45 GPa.<\/span><\/p>\n<p><span style=\"\">O m\u00f3dulo de elasticidade de Young da&nbsp;<\/span><strong><span style=\"\">liga de tit\u00e2nio Ti-6Al-4V \u2013 Grau 5<\/span><\/strong><span style=\"\">&nbsp;\u00e9 de cerca de 114 GPa.<\/span><\/p>\n<p><span style=\"\">O&nbsp;<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/materials-science\/material-properties\/strength\/hookes-law\/youngs-modulus-of-elasticity\/\" data-mce-href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/materials-science\/material-properties\/strength\/hookes-law\/youngs-modulus-of-elasticity\/\"><span style=\"\">m\u00f3dulo de elasticidade de Young<\/span><\/a><span style=\"\"> \u00e9<\/span><span style=\"\">&nbsp;o m\u00f3dulo de elasticidade para tens\u00e3o de tra\u00e7\u00e3o e compress\u00e3o no regime de elasticidade linear de uma deforma\u00e7\u00e3o uniaxial e geralmente \u00e9 avaliado por ensaios de tra\u00e7\u00e3o.&nbsp;At\u00e9 uma tens\u00e3o limite, um corpo poder\u00e1 recuperar suas dimens\u00f5es com a retirada da carga.&nbsp;As tens\u00f5es aplicadas fazem com que os \u00e1tomos em um cristal se movam de sua posi\u00e7\u00e3o de equil\u00edbrio.&nbsp;Todos os&nbsp;<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/atom-properties-of-atoms\/\" data-mce-href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/atom-properties-of-atoms\/\"><span style=\"\">\u00e1tomos<\/span><\/a><span style=\"\">&nbsp;s\u00e3o deslocados na mesma quantidade e ainda mant\u00eam sua geometria relativa.&nbsp;Quando as tens\u00f5es s\u00e3o removidas, todos os \u00e1tomos retornam \u00e0s suas posi\u00e7\u00f5es originais e nenhuma deforma\u00e7\u00e3o permanente ocorre.&nbsp;De acordo com a&nbsp;<\/span><strong><a href=\"https:\/\/material-properties.org\/what-is-hookes-law-definition\/\" data-mce-href=\"https:\/\/material-properties.org\/what-is-hookes-law-definition\/\"><span style=\"\">lei de Hooke<\/span><\/a><span style=\"\">,<\/span><\/strong><span style=\"\">&nbsp;a tens\u00e3o \u00e9 proporcional \u00e0 deforma\u00e7\u00e3o (na regi\u00e3o el\u00e1stica), e a inclina\u00e7\u00e3o \u00e9&nbsp;<\/span><strong><span style=\"\">o m\u00f3dulo de Young<\/span><\/strong><span style=\"\">.&nbsp;O m\u00f3dulo de Young \u00e9 igual \u00e0 tens\u00e3o longitudinal dividida pela deforma\u00e7\u00e3o.<\/span><\/p>\n<p><a href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/01\/Hookes-law-equation.png\" data-mce-href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/01\/Hookes-law-equation.png\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-27811\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/01\/Hookes-law-equation.png\" alt=\"\" width=\"320\" height=\"164\" data-mce-src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/01\/Hookes-law-equation.png\"\/><\/a><\/p>\n<h2><span style=\"\">Dureza da Liga de Magn\u00e9sio vs Liga de Tit\u00e2nio<\/span><\/h2>\n<p><span style=\"\">A dureza Brinell do&nbsp;<\/span><strong><span style=\"\">Elektron 21 &#8211; UNS M12310<\/span><\/strong><span style=\"\">&nbsp;\u00e9 de aproximadamente 70 HB.<\/span><\/p>\n<p><span style=\"\">A dureza Rockwell da&nbsp;<\/span><strong><span style=\"\">liga de tit\u00e2nio Ti-6Al-4V \u2013 Grau 5<\/span><\/strong><span style=\"\">&nbsp;\u00e9 de aproximadamente 41 HRC.<\/span><\/p>\n<p><a href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/01\/table-brinell-hardness-numbers.png\" data-mce-href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/01\/table-brinell-hardness-numbers.png\"><img decoding=\"async\" loading=\"lazy\" class=\"alignright size-full wp-image-28044\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/01\/table-brinell-hardness-numbers.png\" alt=\"n\u00famero de dureza Brinell\" width=\"288\" height=\"297\" data-mce-src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/01\/table-brinell-hardness-numbers.png\"\/><\/a><\/p>\n<p><strong><span style=\"\">O teste de dureza Rockwell<\/span><\/strong><span style=\"\"> \u00e9 um dos testes de dureza de indenta\u00e7\u00e3o mais comuns, que foi desenvolvido para testes de dureza.&nbsp;Em contraste com o teste Brinell, o testador Rockwell mede a profundidade de penetra\u00e7\u00e3o de um penetrador sob uma grande carga (carga principal) em compara\u00e7\u00e3o com a penetra\u00e7\u00e3o feita por uma pr\u00e9-carga (carga menor).&nbsp;A carga menor estabelece a posi\u00e7\u00e3o zero.&nbsp;A carga principal \u00e9 aplicada e, em seguida, removida, mantendo a carga secund\u00e1ria.&nbsp;A diferen\u00e7a entre a profundidade de penetra\u00e7\u00e3o antes e depois da aplica\u00e7\u00e3o da carga principal \u00e9 usada para calcular o&nbsp;<\/span><strong><span style=\"\">n\u00famero de dureza Rockwell<\/span><\/strong><span style=\"\">. Ou seja, a profundidade de penetra\u00e7\u00e3o e a dureza s\u00e3o inversamente proporcionais. A principal vantagem da dureza Rockwell \u00e9 sua capacidade de&nbsp;<\/span><strong><span style=\"\">exibir valores de dureza diretamente<\/span><\/strong><span style=\"\">. O resultado \u00e9 um n\u00famero adimensional anotado como&nbsp;<\/span><strong><span style=\"\">HRA, HRB, HRC<\/span><\/strong><span style=\"\">, etc., onde a \u00faltima letra \u00e9 a respectiva escala Rockwell.<\/span><\/p>\n<p><span style=\"\">O teste Rockwell C \u00e9 realizado com um penetrador Brale (<\/span><strong><span style=\"\">cone de diamante de 120\u00b0<\/span><\/strong><span style=\"\">) e uma carga maior de 150kg.<\/span><\/p>\n<h2><span style=\"\">Propriedades T\u00e9rmicas da Liga de Magn\u00e9sio vs Liga de Tit\u00e2nio<\/span><\/h2>\n<p><strong><span style=\"\">As propriedades t\u00e9rmicas<\/span><\/strong><span style=\"\"> dos materiais referem-se \u00e0 resposta dos materiais \u00e0s mudan\u00e7as de&nbsp;<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/<a href=\"https:\/\/modern-physics.org\/thermodynamics\/\">thermodynamics<\/a>\/thermodynamic-properties\/what-is-temperature-physics\/&#8221; data-mce-href=&#8221;https:\/\/www.nuclear-power.com\/nuclear-engineering\/<a href=\"https:\/\/modern-physics.org\/thermodynamics\/\">thermodynamics<\/a>\/thermodynamic-properties\/what-is-temperature-physics\/&#8221;><span style=\"\">temperatura<\/span><span style=\"\">&nbsp;e \u00e0 aplica\u00e7\u00e3o de&nbsp;<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/heat-transfer\/introduction-to-heat-transfer\/heat-in-physics-definition-of-heat\/\" data-mce-href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/heat-transfer\/introduction-to-heat-transfer\/heat-in-physics-definition-of-heat\/\"><span style=\"\">calor<\/span><\/a><span style=\"\">.&nbsp;\u00c0 medida que um s\u00f3lido absorve&nbsp;<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/<a href=\"https:\/\/modern-physics.org\/thermodynamics\/\">thermodynamics<\/a>\/what-is-energy-physics\/&#8221; data-mce-href=&#8221;https:\/\/www.nuclear-power.com\/nuclear-engineering\/<a href=\"https:\/\/modern-physics.org\/thermodynamics\/\">thermodynamics<\/a>\/what-is-energy-physics\/&#8221;><span style=\"\">energia<\/span><span style=\"\">&nbsp;na forma de calor, sua temperatura aumenta e suas dimens\u00f5es aumentam.&nbsp;Mas&nbsp;<\/span><strong><span style=\"\">diferentes materiais reagem<\/span><\/strong><span style=\"\">&nbsp;\u00e0 aplica\u00e7\u00e3o de calor de&nbsp;<\/span><strong><span style=\"\">forma diferente<\/span><\/strong><span style=\"\">.<\/span><\/p>\n<p><a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/materials-science\/material-properties\/thermal-properties-of-materials\/specific-heat-capacity-of-materials\/\" data-mce-href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/materials-science\/material-properties\/thermal-properties-of-materials\/specific-heat-capacity-of-materials\/\"><span style=\"\">A capacidade<\/span><\/a><span style=\"\"> t\u00e9rmica,&nbsp;<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/materials-science\/material-properties\/thermal-properties-of-materials\/coefficient-of-thermal-expansion-of-materials\/\" data-mce-href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/materials-science\/material-properties\/thermal-properties-of-materials\/coefficient-of-thermal-expansion-of-materials\/\"><span style=\"\">a expans\u00e3o t\u00e9rmica<\/span><\/a><span style=\"\">&nbsp;e&nbsp;<\/span><a href=\"https:\/\/www.thermal-engineering.org\/what-is-thermal-conductivity-definition\/\" data-mce-href=\"https:\/\/www.thermal-engineering.org\/what-is-thermal-conductivity-definition\/\"><span style=\"\">a condutividade t\u00e9rmica<\/span><\/a><span style=\"\">&nbsp;s\u00e3o propriedades frequentemente cr\u00edticas no uso pr\u00e1tico de s\u00f3lidos.<\/span><\/p>\n<h3><span style=\"\">Ponto de Fus\u00e3o da Liga de Magn\u00e9sio vs Liga de Tit\u00e2nio<\/span><\/h3>\n<p><span style=\"\">O ponto de fus\u00e3o do&nbsp;<\/span><strong><span style=\"\">Elektron 21 &#8211; UNS M12310<\/span><\/strong><span style=\"\">&nbsp;\u00e9 de cerca de 550 &#8211; 640\u00b0C.<\/span><\/p>\n<p><span style=\"\">O ponto de fus\u00e3o da&nbsp;<\/span><strong><span style=\"\">liga de tit\u00e2nio Ti-6Al-4V \u2013 Grau 5<\/span><\/strong><span style=\"\">&nbsp;\u00e9 de cerca de 1660\u00b0C.<\/span><\/p>\n<p><span style=\"\">Em geral, a <\/span><strong><span style=\"\">fus\u00e3o<\/span><\/strong><span style=\"\">&nbsp;\u00e9 uma&nbsp;<\/span><strong><span style=\"\">mudan\u00e7a de fase<\/span><\/strong><span style=\"\"> de uma subst\u00e2ncia da fase s\u00f3lida para a fase l\u00edquida. O&nbsp;<\/span><a href=\"https:\/\/material-properties.org\/melting-point-of-chemical-elements\/\" data-mce-href=\"https:\/\/material-properties.org\/melting-point-of-chemical-elements\/\"><strong><span style=\"\">ponto de fus\u00e3o<\/span><\/strong><\/a><span style=\"\"> de uma subst\u00e2ncia \u00e9 a temperatura na qual ocorre essa mudan\u00e7a de fase. O&nbsp;<\/span><strong><span style=\"\">ponto de fus\u00e3o<\/span><\/strong><span style=\"\">&nbsp;tamb\u00e9m define uma condi\u00e7\u00e3o na qual o s\u00f3lido e o l\u00edquido podem existir em equil\u00edbrio.<\/span><\/p>\n<h3><span style=\"\">Condutividade T\u00e9rmica da Liga de Magn\u00e9sio vs Liga de Tit\u00e2nio<\/span><\/h3>\n<p><span style=\"\">A condutividade t\u00e9rmica do&nbsp;<\/span><strong><span style=\"\">Elektron 21 &#8211; UNS M12310<\/span><\/strong><span style=\"\">&nbsp;\u00e9 de 116 W\/(mK).<\/span><\/p>\n<p><span style=\"\">A condutividade t\u00e9rmica da&nbsp;<\/span><strong><span style=\"\">liga de tit\u00e2nio Ti-6Al-4V \u2013 Grau 5<\/span><\/strong><span style=\"\">&nbsp;\u00e9 de 6,7 W\/(mK).<\/span><\/p>\n<p><span style=\"\">As caracter\u00edsticas de transfer\u00eancia de calor de um material s\u00f3lido s\u00e3o medidas por uma propriedade chamada <\/span><a href=\"https:\/\/www.thermal-engineering.org\/what-is-thermal-conductivity-definition\/\" data-mce-href=\"https:\/\/www.thermal-engineering.org\/what-is-thermal-conductivity-definition\/\"><strong><span style=\"\">condutividade t\u00e9rmica<\/span><\/strong><\/a><span style=\"\">, k (ou \u03bb), medida em&nbsp;<\/span><strong><span style=\"\">W\/mK<\/span><\/strong><span style=\"\">. \u00c9 uma medida da capacidade de uma subst\u00e2ncia de transferir calor atrav\u00e9s de um material por&nbsp;<\/span><a href=\"https:\/\/www.thermal-engineering.org\/what-is-thermal-conduction-heat-conduction-definition\/\" data-mce-href=\"https:\/\/www.thermal-engineering.org\/what-is-thermal-conduction-heat-conduction-definition\/\"><span style=\"\">condu\u00e7\u00e3o<\/span><\/a><span style=\"\">.&nbsp;Observe que&nbsp;<\/span><a href=\"https:\/\/www.thermal-engineering.org\/what-is-fouriers-law-of-thermal-conduction-definition\/\" data-mce-href=\"https:\/\/www.thermal-engineering.org\/what-is-fouriers-law-of-thermal-conduction-definition\/\"><strong><span style=\"\">a lei de Fourier<\/span><\/strong><\/a><span style=\"\"> se aplica a toda mat\u00e9ria, independentemente de seu estado (s\u00f3lido, l\u00edquido ou gasoso), portanto, tamb\u00e9m \u00e9 definida para l\u00edquidos e gases.<\/span><\/p>\n<p><span style=\"\">A <\/span><a href=\"https:\/\/www.thermal-engineering.org\/what-is-thermal-conductivity-definition\/\" data-mce-href=\"https:\/\/www.thermal-engineering.org\/what-is-thermal-conductivity-definition\/\"><strong><span style=\"\">condutividade t\u00e9rmica<\/span><\/strong><\/a><span style=\"\"> da maioria dos l\u00edquidos e s\u00f3lidos varia com a temperatura.&nbsp;Para vapores, tamb\u00e9m depende da press\u00e3o.&nbsp;Em geral:<\/span><\/p>\n<p><a href=\"https:\/\/www.nuclear-power.com\/wp-content\/uploads\/2017\/10\/thermal-conductivity-definition.png\" data-mce-href=\"https:\/\/www.nuclear-power.com\/wp-content\/uploads\/2017\/10\/thermal-conductivity-definition.png\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-full wp-image-20041\" src=\"https:\/\/www.nuclear-power.com\/wp-content\/uploads\/2017\/10\/thermal-conductivity-definition.png\" alt=\"condutividade t\u00e9rmica - defini\u00e7\u00e3o\" width=\"225\" height=\"75\" data-mce-src=\"https:\/\/www.nuclear-power.com\/wp-content\/uploads\/2017\/10\/thermal-conductivity-definition.png\"\/><\/a><\/p>\n<p><span style=\"\">A maioria dos materiais s\u00e3o quase homog\u00eaneos, portanto podemos geralmente escrever <\/span><strong><span style=\"\">k = k (T)<\/span><\/strong><span style=\"\">.&nbsp;Defini\u00e7\u00f5es semelhantes est\u00e3o associadas \u00e0s condutividades t\u00e9rmicas nas dire\u00e7\u00f5es y e z (ky, kz), mas para um material isotr\u00f3pico a condutividade t\u00e9rmica \u00e9 independente da dire\u00e7\u00e3o de transfer\u00eancia, kx = ky = kz = k.<\/span><\/p>\n<p><span style=\"\"><\/span><\/p><\/div><\/div><\/span><\/p>\n<p><span style=\"\"><div  class=\"lgc-column lgc-grid-parent lgc-grid-100 lgc-tablet-grid-100 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<p><span style=\"\"><div class=\"su-accordion su-u-trim\"><div class=\"su-spoiler su-spoiler-style-default su-spoiler-icon-plus\" data-scroll-offset=\"0\" data-anchor-in-url=\"no\"><div class=\"su-spoiler-title\" tabindex=\"0\" role=\"button\"><span class=\"su-spoiler-icon\"><\/span>Refer\u00eancias:<\/div><div class=\"su-spoiler-content su-u-clearfix su-u-trim\">Ci\u00eancia dos Materiais:<\/div><\/div><\/div><\/span><\/p>\n<p><span style=\"\">Departamento de Energia dos EUA, Ci\u00eancia de Materiais.&nbsp;DOE Fundamentals Handbook, Volume 1 e 2. Janeiro de 1993.<\/span><br \/><span style=\"\">Departamento de Energia dos EUA, Ci\u00eancia de Materiais.&nbsp;DOE Fundamentals Handbook, Volume 2 e 2. Janeiro de 1993.<\/span><br \/><span style=\"\">William D. Callister, David G. Rethwisch.&nbsp;Ci\u00eancia e Engenharia de Materiais: Uma Introdu\u00e7\u00e3o 9\u00aa Edi\u00e7\u00e3o, Wiley;&nbsp;9 edi\u00e7\u00e3o (4 de dezembro de 2013), ISBN-13: 978-1118324578.<\/span><br \/><span style=\"\">Eberhart, Mark (2003).&nbsp;Por que as coisas quebram: entendendo o mundo pela maneira como ele se desfaz.&nbsp;Harmonia.&nbsp;ISBN 978-1-4000-4760-4.<\/span><br \/><span style=\"\">Gaskell, David R. (1995).&nbsp;Introdu\u00e7\u00e3o \u00e0 Termodin\u00e2mica dos Materiais (4\u00aa ed.).&nbsp;Editora Taylor e Francis.&nbsp;ISBN 978-1-56032-992-3.<\/span><br \/><span style=\"\">Gonz\u00e1lez-Vi\u00f1as, W. &amp; Mancini, HL (2004).&nbsp;Uma Introdu\u00e7\u00e3o \u00e0 Ci\u00eancia dos Materiais.&nbsp;Princeton University Press.&nbsp;ISBN 978-0-691-07097-1.<\/span><br \/><span style=\"\">Ashby, Michael;&nbsp;Hugh Shercliff;&nbsp;David Cebon (2007).&nbsp;Materiais: engenharia, ci\u00eancia, processamento e design (1\u00aa ed.).&nbsp;Butterworth-Heinemann.&nbsp;ISBN 978-0-7506-8391-3.<\/span><br \/><span style=\"\">JR Lamarsh, AJ Baratta, Introdu\u00e7\u00e3o \u00e0 Engenharia Nuclear, 3\u00aa ed., Prentice-Hall, 2001, ISBN: 0-201-82498-1.<\/span><br \/><span style=\"\"><\/span><\/p><\/div><\/div><div class=\"su-divider su-divider-style-dotted\" style=\"margin:15px 0;border-width:2px;border-color:#999999\"><\/div><div class=\"su-divider su-divider-style-default\" style=\"margin:15px 0;border-width:2px;border-color:#999999\"><\/div><div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\"><\/div><\/div><div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<p><span style=\"\">Veja acima:<\/span><br \/><span style=\"\">Ligas<a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/metals-what-are-metals\/alloys-composition-properties-of-metal-alloys\/\" class=\"su-button su-button-style-flat \" style=\"color:#606060;background-color:#ffffff;border-color:#cccccc;border-radius:10px;-moz-border-radius:10px;-webkit-border-radius:10px\" target=\"_self\"><span style=\"color:#606060;padding:7px 20px;font-size:16px;line-height:24px;border-color:#ffffff;border-radius:10px;-moz-border-radius:10px;-webkit-border-radius:10px;text-shadow:0px 0px 0px #000000;-moz-text-shadow:0px 0px 0px #000000;-webkit-text-shadow:0px 0px 0px #000000\"><i class=\"sui sui-link\" style=\"font-size:16px;color:#5d5d5d\"><\/i> <\/span><\/a> <\/span><\/p><\/div><\/div><div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\"><\/div><\/div><\/span><\/p>\n<p><span style=\"\"><div class=\"su-divider su-divider-style-dotted\" style=\"margin:15px 0;border-width:2px;border-color:#999999\"><\/div><\/span><\/p>\n<p><span style=\"\">Esperamos que este artigo, Liga de&nbsp;<\/span><strong><span style=\"\">Magn\u00e9sio vs Liga de Tit\u00e2nio &#8211; Compara\u00e7\u00e3o &#8211; Pr\u00f3s e Contras<\/span><\/strong><span style=\"\">, ajude voc\u00ea.&nbsp;Se sim,&nbsp;<\/span><strong><span style=\"\">d\u00ea um like<\/span><\/strong><span style=\"\">&nbsp;na barra lateral.&nbsp;O objetivo principal deste site \u00e9 ajudar o p\u00fablico a aprender algumas informa\u00e7\u00f5es interessantes e importantes sobre materiais e suas propriedades.<\/span><\/p>\n<p><br data-mce-bogus=\"1\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Esperamos que este artigo, Liga de&nbsp;Magn\u00e9sio vs Liga de Tit\u00e2nio &#8211; Compara\u00e7\u00e3o &#8211; Pr\u00f3s e Contras, ajude voc\u00ea.&nbsp;Se sim,&nbsp;d\u00ea um like&nbsp;na barra lateral.&nbsp;O objetivo principal deste site \u00e9 ajudar o p\u00fablico a aprender algumas informa\u00e7\u00f5es interessantes e importantes sobre materiais e suas propriedades.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[53],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Liga de Magn\u00e9sio vs Liga de Tit\u00e2nio - Compara\u00e7\u00e3o - Pr\u00f3s e Contras | Propriedades do material<\/title>\n<meta name=\"description\" content=\"As ligas de magn\u00e9sio s\u00e3o muito leves e normalmente usadas como ligas fundidas. 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Liga de Magn\u00e9sio vs Liga de Tit\u00e2nio\" \/>\n<meta property=\"og:url\" content=\"https:\/\/material-properties.org\/pt-br\/liga-de-magnesio-x-liga-de-titanio-comparacao-pros-e-contras\/\" \/>\n<meta property=\"og:site_name\" content=\"Material Properties\" \/>\n<meta property=\"article:published_time\" content=\"2023-02-07T12:44:53+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-02-08T08:27:46+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/magnesium-alloy-elektron-image-min-300x300.png\" \/>\n<meta name=\"author\" content=\"Nick Connor\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Escrito por\" \/>\n\t<meta name=\"twitter:data1\" content=\"Nick Connor\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. tempo de leitura\" \/>\n\t<meta name=\"twitter:data2\" content=\"18 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/material-properties.org\/pt-br\/liga-de-magnesio-x-liga-de-titanio-comparacao-pros-e-contras\/\",\"url\":\"https:\/\/material-properties.org\/pt-br\/liga-de-magnesio-x-liga-de-titanio-comparacao-pros-e-contras\/\",\"name\":\"Liga de Magn\u00e9sio vs Liga de Tit\u00e2nio - Compara\u00e7\u00e3o - Pr\u00f3s e Contras | Propriedades do material\",\"isPartOf\":{\"@id\":\"https:\/\/material-properties.org\/pt-br\/#website\"},\"datePublished\":\"2023-02-07T12:44:53+00:00\",\"dateModified\":\"2023-02-08T08:27:46+00:00\",\"author\":{\"@id\":\"https:\/\/material-properties.org\/pt-br\/#\/schema\/person\/e8c544db9afedaec8574d6464f9398bb\"},\"description\":\"As ligas de magn\u00e9sio s\u00e3o muito leves e normalmente usadas como ligas fundidas. As ligas de tit\u00e2nio t\u00eam resist\u00eancia \u00e0 corros\u00e3o muito alta e rela\u00e7\u00e3o resist\u00eancia-densidade, a mais alta de qualquer elemento met\u00e1lico. 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