{"id":119706,"date":"2023-02-08T17:59:34","date_gmt":"2023-02-08T16:59:34","guid":{"rendered":"https:\/\/material-properties.org\/qual-e-a-resistencia-das-ligas-de-titanio-definicao\/"},"modified":"2023-02-16T08:19:56","modified_gmt":"2023-02-16T07:19:56","slug":"qual-e-a-resistencia-das-ligas-de-titanio-definicao","status":"publish","type":"post","link":"https:\/\/material-properties.org\/pt-br\/qual-e-a-resistencia-das-ligas-de-titanio-definicao\/","title":{"rendered":"Qual \u00e9 a resist\u00eancia das ligas de tit\u00e2nio &#8211; Defini\u00e7\u00e3o"},"content":{"rendered":"<p><span><div class=\"su-quote su-quote-style-default\"><div class=\"su-quote-inner su-u-clearfix su-u-trim\">A resist\u00eancia das ligas de tit\u00e2nio varia significativamente com a composi\u00e7\u00e3o e o tratamento t\u00e9rmico.\u00a0A resist\u00eancia \u00e0 tra\u00e7\u00e3o final do tit\u00e2nio comercialmente puro &#8211; Grau 2 \u00e9 de cerca de 340 MPa.\u00a0A resist\u00eancia \u00e0 tra\u00e7\u00e3o final da liga de tit\u00e2nio Ti-6Al-4V &#8211; Grau 5 \u00e9 de cerca de 1170 MPa.<\/div><\/div><\/span><\/p>\n<p><span><div class=\"su-divider su-divider-style-dotted\" style=\"margin:15px 0;border-width:2px;border-color:#999999\"><\/div><\/span><\/p>\n<p><span><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><strong><a 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\" \/><\/a><span>O tit\u00e2nio<\/span><\/strong><span>\u00a0\u00e9 um metal de transi\u00e7\u00e3o brilhante com uma cor prateada,\u00a0<\/span><strong><span>baixa densidade<\/span><\/strong><span>\u00a0e\u00a0<\/span><strong><span>alta resist\u00eancia<\/span><\/strong><span>.\u00a0O tit\u00e2nio \u00e9\u00a0<\/span><strong><span>resistente \u00e0 corros\u00e3o<\/span><\/strong><span>\u00a0na \u00e1gua do mar, \u00e1gua r\u00e9gia e cloro.\u00a0Em usinas de energia, o tit\u00e2nio pode ser usado em\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-power-plant\/turbine-generator-power-conversion-system\/main-condenser-steam-condenser\/types-of-steam-condensers\/\"><span>condensadores de superf\u00edcie<\/span><\/a><span>.\u00a0O metal \u00e9 extra\u00eddo de seus principais min\u00e9rios pelos\u00a0<\/span><strong><span>processos Kroll e Hunter<\/span><\/strong><span>.\u00a0O processo de Kroll envolvia a redu\u00e7\u00e3o do tetracloreto de tit\u00e2nio (TiCl4), primeiro com s\u00f3dio e c\u00e1lcio e depois com magn\u00e9sio, sob uma atmosfera de g\u00e1s inerte.\u00a0O tit\u00e2nio puro \u00e9 mais forte que os a\u00e7os comuns de baixo teor de carbono, mas 45% mais leve.\u00a0Tamb\u00e9m \u00e9 duas vezes mais forte que\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/metals-what-are-metals\/alloys-composition-properties-of-metal-alloys\/aluminium-alloys\/\"><span>as ligas de alum\u00ednio<\/span><\/a><span> fracas, mas apenas 60% mais pesadas.\u00a0As duas propriedades mais \u00fateis do metal s\u00e3o <\/span><strong><span>resist\u00eancia \u00e0 corros\u00e3o<\/span><\/strong><span>\u00a0e\u00a0<\/span><strong><span>rela\u00e7\u00e3o for\u00e7a-densidade<\/span><\/strong><span>, a mais alta de qualquer elemento met\u00e1lico.\u00a0A resist\u00eancia \u00e0 corros\u00e3o das ligas de tit\u00e2nio em temperaturas normais \u00e9 excepcionalmente alta.\u00a0A resist\u00eancia \u00e0 corros\u00e3o do tit\u00e2nio \u00e9 baseada na forma\u00e7\u00e3o de uma camada de \u00f3xido protetora est\u00e1vel.\u00a0Embora o tit\u00e2nio &#8220;comercialmente puro&#8221; 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, tipicamente 6% e 4%, respectivamente, em peso.\u00a0Esta mistura tem uma solubilidade s\u00f3lida que varia drasticamente com a temperatura, permitindo que ela sofra\u00a0<\/span><strong><span>um refor\u00e7o de precipita\u00e7\u00e3o<\/span><\/strong><span>.<\/span><\/p>\n<p><strong><span>As ligas de tit\u00e2nio<\/span><\/strong><span>\u00a0s\u00e3o metais que cont\u00eam uma mistura de tit\u00e2nio e outros elementos qu\u00edmicos.\u00a0Essas ligas t\u00eam resist\u00eancia \u00e0 tra\u00e7\u00e3o e tenacidade muito altas (mesmo em temperaturas extremas).\u00a0Eles s\u00e3o leves, t\u00eam\u00a0<\/span><strong><span>extraordin\u00e1ria resist\u00eancia \u00e0 corros\u00e3o<\/span><\/strong><span>\u00a0e a capacidade de suportar temperaturas extremas.<\/span><\/p>\n<h2><span>Resist\u00eancia das Ligas de Tit\u00e2nio<\/span><\/h2>\n<p><span>Na mec\u00e2nica dos materiais, a\u00a0<\/span><a href=\"https:\/\/material-properties.org\/what-is-strength-definition\/\"><strong><span>resist\u00eancia de um material<\/span><\/strong><\/a><span>\u00a0\u00e9 sua capacidade de suportar uma carga aplicada sem falha ou deforma\u00e7\u00e3o pl\u00e1stica.\u00a0<\/span><strong><span>A resist\u00eancia dos materiais<\/span><\/strong><span>\u00a0considera basicamente a rela\u00e7\u00e3o entre as\u00a0<\/span><strong><span>cargas externas aplicadas a um material e a\u00a0<\/span><\/strong><strong><span>deforma\u00e7\u00e3o<\/span><\/strong><span>\u00a0resultante\u00a0ou mudan\u00e7a nas dimens\u00f5es do material.\u00a0<\/span><strong><span>A resist\u00eancia de um material<\/span><\/strong><span>\u00a0\u00e9 sua capacidade de suportar essa carga aplicada sem falha ou deforma\u00e7\u00e3o pl\u00e1stica.<\/span><\/p>\n<h3><span>Resist\u00eancia \u00e0 tra\u00e7\u00e3o<\/span><\/h3>\n<p><span>A resist\u00eancia \u00e0 tra\u00e7\u00e3o final do\u00a0<\/span><strong><span>tit\u00e2nio comercialmente puro &#8211; Grau 2<\/span><\/strong><span>\u00a0\u00e9 de cerca de 340 MPa.<\/span><\/p>\n<p><span>A resist\u00eancia \u00e0 tra\u00e7\u00e3o final da\u00a0<\/span><strong><span>liga de tit\u00e2nio Ti-6Al-4V \u2013 Grau 5<\/span><\/strong><span>\u00a0\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\"><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\" \/><\/a><span>A\u00a0<\/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\/\"><strong><span>resist\u00eancia \u00e0 tra\u00e7\u00e3o final<\/span><\/strong><\/a><span>\u00a0\u00e9 o m\u00e1ximo na\u00a0<\/span><a href=\"https:\/\/material-properties.org\/what-is-stress-strain-curve-stress-strain-diagram-definition\/\"><span>curva de tens\u00e3o-deforma\u00e7\u00e3o<\/span><\/a><span> de engenharia.\u00a0Isso corresponde \u00e0\u00a0<\/span><strong><span>tens\u00e3o m\u00e1xima <\/span><\/strong><span>que pode ser sustentado por uma estrutura em tens\u00e3o.\u00a0A 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.\u00a0Se essa tens\u00e3o for aplicada e mantida, ocorrer\u00e1 fratura.\u00a0Freq\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).\u00a0Quando 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.\u00a0A curva tens\u00e3o-deforma\u00e7\u00e3o n\u00e3o cont\u00e9m tens\u00e3o maior do que a resist\u00eancia m\u00e1xima.\u00a0Mesmo 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.\u00a0\u00c9 uma propriedade intensiva;\u00a0portanto, seu valor n\u00e3o depende do tamanho do corpo de prova.\u00a0Por\u00e9m, depende de outros fatores, como o preparo do corpo de prova, <\/span><strong><span>temperatura<\/span><\/strong><span>\u00a0do ambiente de teste e do material.\u00a0<\/span><strong><span>A resist\u00eancia m\u00e1xima \u00e0 tra\u00e7\u00e3o<\/span><\/strong><span>\u00a0varia de 50 MPa para um alum\u00ednio at\u00e9 3000 MPa para a\u00e7os de alta resist\u00eancia.<\/span><\/p>\n<h3><span>For\u00e7a de Rendimento<\/span><\/h3>\n<p><span>A resist\u00eancia ao escoamento do\u00a0<\/span><strong><span>tit\u00e2nio comercialmente puro &#8211; Grau 2<\/span><\/strong><span>\u00a0\u00e9 de cerca de 300 MPa.<\/span><\/p>\n<p><span>A resist\u00eancia ao escoamento da\u00a0<\/span><strong><span>liga de tit\u00e2nio Ti-6Al-4V \u2013 Grau 5<\/span><\/strong><span>\u00a0\u00e9 de cerca de 1100 MPa.<\/span><\/p>\n<p><span>O\u00a0<\/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\/\"><strong><span>ponto de escoamento<\/span><\/strong><\/a><span>\u00a0\u00e9 o ponto em uma\u00a0<\/span><a href=\"https:\/\/material-properties.org\/what-is-stress-strain-curve-stress-strain-diagram-definition\/\"><span>curva tens\u00e3o-deforma\u00e7\u00e3o<\/span><\/a><span>\u00a0que indica o limite do comportamento el\u00e1stico e o in\u00edcio do comportamento pl\u00e1stico.\u00a0<\/span><strong><span>For\u00e7a de rendimento <\/span><\/strong><span>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).\u00a0Antes do ponto de escoamento, o material se deformar\u00e1 elasticamente e retornar\u00e1 \u00e0 sua forma original quando a tens\u00e3o aplicada for removida.\u00a0Uma vez ultrapassado o ponto de escoamento, alguma fra\u00e7\u00e3o da deforma\u00e7\u00e3o ser\u00e1 permanente e irrevers\u00edvel.\u00a0Alguns a\u00e7os e outros materiais exibem um comportamento denominado fen\u00f4meno do ponto de escoamento.\u00a0As 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>M\u00f3dulo de elasticidade de Young<\/span><\/h3>\n<p><span>O m\u00f3dulo de elasticidade de Young do\u00a0<\/span><strong><span>tit\u00e2nio comercialmente puro \u2013 Grau 2<\/span><\/strong><span>\u00a0\u00e9 de cerca de 105 GPa.<\/span><\/p>\n<p><span>O m\u00f3dulo de elasticidade de Young da\u00a0<\/span><strong><span>liga de tit\u00e2nio Ti-6Al-4V \u2013 Grau 5<\/span><\/strong><span>\u00a0\u00e9 de cerca de 114 GPa.<\/span><\/p>\n<p><span>O\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/materials-science\/material-properties\/strength\/hookes-law\/youngs-modulus-of-elasticity\/\"><span>m\u00f3dulo de elasticidade de Young<\/span><\/a><span>\u00a0\u00e9 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.\u00a0At\u00e9 uma tens\u00e3o limite, um corpo poder\u00e1 recuperar suas dimens\u00f5es com a retirada da carga.\u00a0As tens\u00f5es aplicadas fazem com que os \u00e1tomos em um cristal se movam de sua posi\u00e7\u00e3o de equil\u00edbrio.\u00a0Todos os\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-power\/reactor-physics\/atomic-nuclear-physics\/atom-properties-of-atoms\/\"><span>\u00e1tomos<\/span><\/a><span>\u00a0s\u00e3o deslocados na mesma quantidade e ainda mant\u00eam sua geometria relativa.\u00a0Quando as tens\u00f5es s\u00e3o removidas, todos os \u00e1tomos retornam \u00e0s suas posi\u00e7\u00f5es originais e nenhuma deforma\u00e7\u00e3o permanente ocorre.\u00a0De acordo com a\u00a0<\/span><strong><a href=\"https:\/\/material-properties.org\/what-is-hookes-law-definition\/\"><span>lei de Hooke<\/span><\/a><span>,<\/span><\/strong><span>\u00a0a tens\u00e3o \u00e9 proporcional \u00e0 deforma\u00e7\u00e3o (na regi\u00e3o el\u00e1stica), e a inclina\u00e7\u00e3o \u00e9 o\u00a0<\/span><strong><span>m\u00f3dulo de Young<\/span><\/strong><span>.\u00a0O 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\"><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\" \/><\/a><\/p>\n<p><span><\/span><\/p><\/div><\/div><\/span><\/p>\n<p><span><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><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>Departamento de Energia dos EUA, Ci\u00eancia de Materiais.\u00a0DOE Fundamentals Handbook, Volume 1 e 2. Janeiro de 1993.<\/span><br \/>\n<span>Departamento de Energia dos EUA, Ci\u00eancia de Materiais.\u00a0DOE Fundamentals Handbook, Volume 2 e 2. Janeiro de 1993.<\/span><br \/>\n<span>William D. Callister, David G. Rethwisch.\u00a0Ci\u00eancia e Engenharia de Materiais: Uma Introdu\u00e7\u00e3o 9\u00aa Edi\u00e7\u00e3o, Wiley;\u00a09 edi\u00e7\u00e3o (4 de dezembro de 2013), ISBN-13: 978-1118324578.<\/span><br \/>\n<span>Eberhart, Mark (2003).\u00a0Por que as coisas quebram: entendendo o mundo pela maneira como ele se desfaz.\u00a0Harmonia.\u00a0ISBN 978-1-4000-4760-4.<\/span><br \/>\n<span>Gaskell, David R. (1995).\u00a0Introdu\u00e7\u00e3o \u00e0 Termodin\u00e2mica dos Materiais (4\u00aa ed.).\u00a0Editora Taylor e Francis.\u00a0ISBN 978-1-56032-992-3.<\/span><br \/>\n<span>Gonz\u00e1lez-Vi\u00f1as, W. &amp; Mancini, HL (2004).\u00a0Uma Introdu\u00e7\u00e3o \u00e0 Ci\u00eancia dos Materiais.\u00a0Princeton University Press.\u00a0ISBN 978-0-691-07097-1.<\/span><br \/>\n<span>Ashby, Michael;\u00a0Hugh Shercliff;\u00a0David Cebon (2007).\u00a0Materiais: engenharia, ci\u00eancia, processamento e design (1\u00aa ed.).\u00a0Butterworth-Heinemann.\u00a0ISBN 978-0-7506-8391-3.<\/span><br \/>\n<span>JR Lamarsh, AJ Baratta, Introdu\u00e7\u00e3o \u00e0 Engenharia Nuclear, 3\u00aa ed., Prentice-Hall, 2001, ISBN: 0-201-82498-1.<\/span><br \/>\n<span><\/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>Veja acima:<\/span><br \/>\n<span>Ligas de tit\u00e2nio<a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/metals-what-are-metals\/alloys-composition-properties-of-metal-alloys\/titanium-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><div class=\"su-divider su-divider-style-dotted\" style=\"margin:15px 0;border-width:2px;border-color:#999999\"><\/div><\/span><\/p>\n<p><span>Esperamos que este artigo,\u00a0<\/span><strong><span>For\u00e7a das Ligas de Tit\u00e2nio<\/span><\/strong><span>, ajude voc\u00ea.\u00a0Se sim,\u00a0<\/span><strong><span>d\u00ea um like<\/span><\/strong><span>\u00a0na barra lateral.\u00a0O 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>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Esperamos que este artigo,\u00a0For\u00e7a das Ligas de Tit\u00e2nio, ajude voc\u00ea.\u00a0Se sim,\u00a0d\u00ea um like\u00a0na barra lateral.\u00a0O objetivo principal deste site \u00e9 ajudar o p\u00fablico a aprender algumas informa\u00e7\u00f5es interessantes e importantes sobre materiais e suas propriedades. &nbsp;<\/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>Qual \u00e9 a resist\u00eancia das ligas de tit\u00e2nio - Defini\u00e7\u00e3o | Propriedades do material<\/title>\n<meta name=\"description\" content=\"A resist\u00eancia das ligas de tit\u00e2nio varia significativamente com a composi\u00e7\u00e3o e o tratamento t\u00e9rmico. 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