{"id":116011,"date":"2022-05-09T08:07:27","date_gmt":"2022-05-09T07:07:27","guid":{"rendered":"https:\/\/material-properties.org\/quelles-sont-les-proprietes-thermiques-des-metaux-legers-et-des-alliages-definition\/"},"modified":"2022-05-12T12:20:44","modified_gmt":"2022-05-12T11:20:44","slug":"quelles-sont-les-proprietes-thermiques-des-metaux-legers-et-des-alliages-definition","status":"publish","type":"post","link":"https:\/\/material-properties.org\/fr\/quelles-sont-les-proprietes-thermiques-des-metaux-legers-et-des-alliages-definition\/","title":{"rendered":"Quelles sont les propri\u00e9t\u00e9s thermiques des m\u00e9taux l\u00e9gers et des alliages &#8211; D\u00e9finition"},"content":{"rendered":"<p><span><div class=\"su-quote su-quote-style-default\"><div class=\"su-quote-inner su-u-clearfix su-u-trim\"><\/div><\/div>Propri\u00e9t\u00e9s thermiques des m\u00e9taux l\u00e9gers et alliages.\u00a0Le point de fusion de l'alliage d'aluminium 6061 est d'environ 600\u00b0C. Le point de fusion d'Elektron 21 - UNS M12310 est d'environ 550 - 640\u00b0C. ]<\/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=\"Alliage de titane\" width=\"300\" height=\"300\" \/><\/a><span>Les m\u00e9taux l\u00e9gers<\/span><\/strong><span>\u00a0et leurs\u00a0<\/span><strong><span>alliages<\/span><\/strong><span>\u00a0sont des mat\u00e9riaux de\u00a0<\/span><strong><span>densit\u00e9 relativement faible<\/span><\/strong><span>\u00a0et\u00a0<\/span><strong><span>de rapports r\u00e9sistance\/poids \u00e9lev\u00e9s<\/span><\/strong><span>.\u00a0Ces m\u00e9taux et alliages sont d'une grande importance dans les applications d'ing\u00e9nierie pour les transports terrestres, maritimes, a\u00e9riens et spatiaux.\u00a0<\/span><strong><span>Le magn\u00e9sium, l'aluminium et le titane<\/span><\/strong><span>\u00a0sont des m\u00e9taux l\u00e9gers d'importance commerciale significative.\u00a0Ces trois m\u00e9taux et leurs alliages constituent la majeure partie des mat\u00e9riaux m\u00e9talliques \u00e0 rapport r\u00e9sistance\/poids \u00e9lev\u00e9 utilis\u00e9s dans les syst\u00e8mes industriels.\u00a0<\/span><strong><span>L'aluminium est le plus polyvalent<\/span><\/strong><span>\u00a0de ces mat\u00e9riaux et\u00a0<\/span><strong><span>le titane est le plus r\u00e9sistant \u00e0 la corrosion<\/span><\/strong><span>\u00a0avec une r\u00e9sistance tr\u00e8s \u00e9lev\u00e9e, tandis que\u00a0<\/span><strong><span>le magn\u00e9sium a la densit\u00e9 la plus faible.<\/span><\/strong><span>\u00a0Leurs densit\u00e9s de 1,7 (magn\u00e9sium), 2,7 (aluminium) et 4,5 g\/cm<\/span><sup><span>3<\/span><\/sup><span> (titane) varient de 19 \u00e0 56 % des densit\u00e9s des m\u00e9taux de structure plus anciens, le fer (7,9 g\/cm<\/span><sup><span>3<\/span><\/sup><span>) et le cuivre (8,9 g\/ cm<sup>3<\/sup><\/span><span>).\u00a0Les m\u00e9taux couramment class\u00e9s comme m\u00e9taux l\u00e9gers sont ceux dont la masse volumique est inf\u00e9rieure \u00e0 la masse volumique de l'\u00a0<\/span><a href=\"https:\/\/material-properties.org\/what-are-steels-properties-of-steels-definition\/\"><span>acier<\/span><\/a><span> (7,8 g\/cm<\/span><sup><span>3<\/span><\/sup><span> ou 0,28 lb\/in.<\/span><sup><span>3<\/span><\/sup><span>).<\/span><\/p>\n<p><span>\u00c9tant donn\u00e9 que ces m\u00e9taux purs sont g\u00e9n\u00e9ralement des mat\u00e9riaux plus mous avec une r\u00e9sistance insuffisante, ils doivent \u00eatre alli\u00e9s pour atteindre les propri\u00e9t\u00e9s m\u00e9caniques cibles.\u00a0Par exemple, l'aluminium de haute puret\u00e9 est un mat\u00e9riau souple avec une r\u00e9sistance ultime d'environ 10 MPa, ce qui limite sa facilit\u00e9 d'utilisation dans les applications industrielles.\u00a0D'autre part, la r\u00e9sistance \u00e0 la traction de l'alliage d'aluminium 6061 peut atteindre plus de 290 MPa selon l'\u00e9tat du mat\u00e9riau.\u00a0Par cons\u00e9quent, nous discutons principalement des alliages au lieu des m\u00e9taux purs.<\/span><\/p>\n<h2><span>Propri\u00e9t\u00e9s thermiques des m\u00e9taux l\u00e9gers et des alliages<\/span><\/h2>\n<p><strong><span>Les propri\u00e9t\u00e9s thermiques<\/span><\/strong><span> des mat\u00e9riaux font r\u00e9f\u00e9rence \u00e0 la r\u00e9ponse des mat\u00e9riaux aux changements de leur\u00a0\u00a0<\/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\/\"><span>temp\u00e9rature<\/span><span>\u00a0et \u00e0 l'application de\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/heat-transfer\/introduction-to-heat-transfer\/heat-in-physics-definition-of-heat\/\"><span>chaleur<\/span><\/a><span>.\u00a0Lorsqu'un solide absorbe de\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/<a href=\"https:\/\/modern-physics.org\/thermodynamics\/\">thermodynamics<\/a>\/what-is-energy-physics\/\"><span>l'\u00e9nergie<\/span><span>\u00a0sous forme de chaleur, sa temp\u00e9rature augmente et ses dimensions augmentent.\u00a0Mais\u00a0<\/span><strong><span>diff\u00e9rents mat\u00e9riaux r\u00e9agissent diff\u00e9remment\u00a0<\/span><\/strong><strong><span>\u00e0<\/span><\/strong><span> l'application de chaleur.<\/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\/\"><span>La capacit\u00e9 calorifique<\/span><\/a><span>,\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/materials-science\/material-properties\/thermal-properties-of-materials\/coefficient-of-thermal-expansion-of-materials\/\"><span>la dilatation<\/span><\/a><span>\u00a0thermique et\u00a0<\/span><a href=\"https:\/\/www.thermal-engineering.org\/what-is-thermal-conductivity-definition\/\"><span>la conductivit\u00e9 thermique<\/span><\/a><span>\u00a0sont des propri\u00e9t\u00e9s qui sont souvent critiques dans l'utilisation pratique des solides.<\/span><\/p>\n<h3><span>Point de fusion des m\u00e9taux l\u00e9gers et des alliages<\/span><\/h3>\n<p><span>Le point de fusion de\u00a0<\/span><strong><span>l'alliage d'aluminium 6061<\/span><\/strong><span> est d'environ 600 \u00b0C.<\/span><\/p>\n<p><span>Le point de fusion d'\u00a0<\/span><strong><span>Elektron 21 - UNS M12310<\/span><\/strong><span> est d'environ 550 - 640 \u00b0C.<\/span><\/p>\n<p><span>Le point de fusion de\u00a0<\/span><strong><span>l'alliage de titane Ti-6Al-4V - Grade 5<\/span><\/strong><span> est d'environ 1660 \u00b0C.<\/span><\/p>\n<p><span>En g\u00e9n\u00e9ral, la <\/span><strong><span>fusion<\/span><\/strong><span> est un\u00a0<\/span><strong><span>changement de phase<\/span><\/strong><span> d'une substance de la phase solide \u00e0 la phase liquide.\u00a0Le <\/span><a href=\"https:\/\/material-properties.org\/melting-point-of-chemical-elements\/\"><strong><span>point de fusion<\/span><\/strong><\/a><span> d'une substance est la temp\u00e9rature \u00e0 laquelle ce changement de phase se produit.\u00a0Le <\/span><strong><span>point de fusion<\/span><\/strong><span>\u00a0d\u00e9finit \u00e9galement une condition dans laquelle le solide et le liquide peuvent exister en \u00e9quilibre.<\/span><\/p>\n<h3><span>Conductivit\u00e9 thermique des m\u00e9taux l\u00e9gers et des alliages<\/span><\/h3>\n<p><span>La conductivit\u00e9 thermique de\u00a0<\/span><strong><span>l'alliage d'aluminium 6061<\/span><\/strong><span>\u00a0est de 150 W\/(mK).<\/span><\/p>\n<p><span>La conductivit\u00e9 thermique d'\u00a0<\/span><strong><span>Elektron 21 - UNS M12310<\/span><\/strong><span>\u00a0est de 116 W\/(mK).<\/span><\/p>\n<p><span>La conductivit\u00e9 thermique de\u00a0<\/span><strong><span>l'alliage de titane Ti-6Al-4V - Grade 5<\/span><\/strong><span>\u00a0est de 6,7 W\/(mK).<\/span><\/p>\n<p><span>Les caract\u00e9ristiques de transfert de chaleur d'un mat\u00e9riau solide sont mesur\u00e9es par une propri\u00e9t\u00e9 appel\u00e9e la <\/span><a href=\"https:\/\/www.thermal-engineering.org\/what-is-thermal-conductivity-definition\/\"><strong><span>conductivit\u00e9 thermique<\/span><\/strong><\/a><span> , k (ou \u03bb), mesur\u00e9e en\u00a0<\/span><strong><span>W\/mK<\/span><\/strong><span>.\u00a0C'est une mesure de la capacit\u00e9 d'une substance \u00e0 transf\u00e9rer de la chaleur \u00e0 travers un mat\u00e9riau par <\/span><a href=\"https:\/\/www.thermal-engineering.org\/what-is-thermal-conduction-heat-conduction-definition\/\"><span>conduction<\/span><\/a><span>.\u00a0Notez que <\/span><a href=\"https:\/\/www.thermal-engineering.org\/what-is-fouriers-law-of-thermal-conduction-definition\/\"><strong><span>la loi de Fourier<\/span><\/strong><\/a><span> s'applique \u00e0 toute mati\u00e8re, quel que soit son \u00e9tat (solide, liquide ou gazeux), par cons\u00e9quent, elle est \u00e9galement d\u00e9finie pour les liquides et les gaz.<\/span><\/p>\n<p><span>La <\/span><a href=\"https:\/\/www.thermal-engineering.org\/what-is-thermal-conductivity-definition\/\"><strong><span>conductivit\u00e9 thermique<\/span><\/strong><\/a><span> de la plupart des liquides et des solides varie avec la temp\u00e9rature.\u00a0Pour les vapeurs, cela d\u00e9pend aussi de la pression.\u00a0En g\u00e9n\u00e9ral:<\/span><\/p>\n<p><a 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=\"conductivit\u00e9 thermique - d\u00e9finition\" width=\"225\" height=\"75\" \/><\/a><\/p>\n<p><span>La plupart des mat\u00e9riaux sont presque homog\u00e8nes, nous pouvons donc g\u00e9n\u00e9ralement \u00e9crire <\/span><strong><span>k = k (T)<\/span><\/strong><span>.\u00a0Des d\u00e9finitions similaires sont associ\u00e9es aux conductivit\u00e9s thermiques dans les directions y et z (ky, kz), mais pour un mat\u00e9riau isotrope, la conductivit\u00e9 thermique est ind\u00e9pendante de la direction de transfert, kx = ky = kz = k.<\/span><\/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>R\u00e9f\u00e9rences :<\/div><div class=\"su-spoiler-content su-u-clearfix su-u-trim\">Science des mat\u00e9riaux:<\/div><\/div><\/div><\/span><\/p>\n<p><span>D\u00e9partement am\u00e9ricain de l&rsquo;\u00e9nergie, science des mat\u00e9riaux.\u00a0DOE Fundamentals Handbook, Volume 1 and 2. Janvier 1993.<\/span><br \/>\n<span>US Department of Energy, Material Science.\u00a0DOE Fundamentals Handbook, Volume 2 et 2. Janvier 1993.<\/span><br \/>\n<span>William D. Callister, David G. Rethwisch.\u00a0Science et g\u00e9nie des mat\u00e9riaux : une introduction 9e \u00e9dition, Wiley ;\u00a09 \u00e9dition (4 d\u00e9cembre 2013), ISBN-13\u00a0: 978-1118324578.<\/span><br \/>\n<span>En ligneEberhart, Mark (2003).\u00a0Pourquoi les choses se cassent\u00a0: Comprendre le monde par la mani\u00e8re dont il se d\u00e9compose.\u00a0Harmonie.\u00a0ISBN 978-1-4000-4760-4.<\/span><br \/>\n<span>Gaskell, David R. (1995).\u00a0Introduction \u00e0 la thermodynamique des mat\u00e9riaux (4e \u00e9d.).\u00a0\u00c9ditions Taylor et Francis.\u00a0ISBN 978-1-56032-992-3.<\/span><br \/>\n<span>Gonz\u00e1lez-Vi\u00f1as, W. &amp; Mancini, HL (2004).\u00a0Une introduction \u00e0 la science des mat\u00e9riaux.\u00a0Presse universitaire de Princeton.\u00a0ISBN 978-0-691-07097-1.<\/span><br \/>\n<span>Ashby, Michael;\u00a0Hugh Shercliff;\u00a0David Cebon (2007).\u00a0Mat\u00e9riaux: ing\u00e9nierie, science, traitement et conception (1\u00e8re \u00e9d.).\u00a0Butterworth-Heinemann.\u00a0ISBN 978-0-7506-8391-3.<\/span><br \/>\n<span>JR Lamarsh, AJ Baratta, Introduction au g\u00e9nie nucl\u00e9aire, 3e \u00e9d., 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>Voir ci-dessus:<\/span><br \/>\n<span>Alliages l\u00e9gers<a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/metals-what-are-metals\/alloys-composition-properties-of-metal-alloys\/light-metals- and-alliages\/\" 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\"><img src=\"icon : lien\" alt=\"\" style=\"width:24px;height:24px\" \/> <\/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>Nous esp\u00e9rons que cet article,\u00a0<\/span><strong><span>Propri\u00e9t\u00e9s thermiques des m\u00e9taux l\u00e9gers et alliages<\/span><\/strong><span>, vous aidera.\u00a0Si oui,\u00a0<\/span><strong><span>donnez-nous un like<\/span><\/strong><span>\u00a0dans la barre lat\u00e9rale.\u00a0L'objectif principal de ce site Web est d'aider le public \u00e0 apprendre des informations int\u00e9ressantes et importantes sur les mat\u00e9riaux et leurs propri\u00e9t\u00e9s.<\/span><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Propri\u00e9t\u00e9s thermiques des m\u00e9taux l\u00e9gers et alliages.\u00a0Le point de fusion de l&rsquo;alliage d&rsquo;aluminium 6061 est d&rsquo;environ 600\u00b0C. Le point de fusion d&rsquo;Elektron 21 &#8211; UNS M12310 est d&rsquo;environ 550 &#8211; 640\u00b0C. ] Nous esp\u00e9rons que cet article,\u00a0Propri\u00e9t\u00e9s thermiques des m\u00e9taux l\u00e9gers et alliages, vous aidera.\u00a0Si oui,\u00a0donnez-nous un like\u00a0dans la barre lat\u00e9rale.\u00a0L&rsquo;objectif principal de ce site &#8230; <a title=\"Quelles sont les propri\u00e9t\u00e9s thermiques des m\u00e9taux l\u00e9gers et des alliages &#8211; D\u00e9finition\" class=\"read-more\" href=\"https:\/\/material-properties.org\/fr\/quelles-sont-les-proprietes-thermiques-des-metaux-legers-et-des-alliages-definition\/\">Read more<\/a><\/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>Quelles sont les propri\u00e9t\u00e9s thermiques des m\u00e9taux l\u00e9gers et des alliages - D\u00e9finition | Propri\u00e9t\u00e9s mat\u00e9rielles<\/title>\n<meta name=\"description\" content=\"Propri\u00e9t\u00e9s thermiques des m\u00e9taux l\u00e9gers et des alliages. 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Le point de fusion de l'alliage d'aluminium 6061 est d'environ 600\u00b0C. 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