{"id":116022,"date":"2022-05-09T09:56:26","date_gmt":"2022-05-09T08:56:26","guid":{"rendered":"https:\/\/material-properties.org\/utilisations-des-metaux-legers-et-alliages-application-definition\/"},"modified":"2022-05-12T13:31:45","modified_gmt":"2022-05-12T12:31:45","slug":"utilisations-des-metaux-legers-et-alliages-application-definition","status":"publish","type":"post","link":"https:\/\/material-properties.org\/fr\/utilisations-des-metaux-legers-et-alliages-application-definition\/","title":{"rendered":"Utilisations des m\u00e9taux l\u00e9gers et alliages &#8211; Application &#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\">Les alliages l\u00e9gers sont largement utilis\u00e9s dans les applications a\u00e9rospatiales, automobiles, architecturales, lithographiques, d&#8217;emballage, \u00e9lectriques et \u00e9lectroniques.\u00a0Ils sont le principal mat\u00e9riau de construction pour l&rsquo;industrie a\u00e9ronautique.<\/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=\"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&rsquo;une grande importance dans les applications d&rsquo;ing\u00e9nierie pour les transports terrestres, maritimes, a\u00e9riens et spatiaux.\u00a0<\/span><strong><span>Le magn\u00e9sium, l&rsquo;aluminium et le titane<\/span><\/strong><span>\u00a0sont des m\u00e9taux l\u00e9gers d&rsquo;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&rsquo;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&rsquo;\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&rsquo;aluminium de haute puret\u00e9 est un mat\u00e9riau souple avec une r\u00e9sistance ultime d&rsquo;environ 10 MPa, ce qui limite sa facilit\u00e9 d&rsquo;utilisation dans les applications industrielles.\u00a0D&rsquo;autre part, la r\u00e9sistance \u00e0 la traction de l&rsquo;alliage d&rsquo;aluminium 6061 peut atteindre plus de 290 MPa selon l&rsquo;\u00e9tat du mat\u00e9riau.\u00a0Par cons\u00e9quent, nous discutons principalement des alliages au lieu des m\u00e9taux purs.<\/span><\/p>\n<h2><span>Application d&rsquo;alliages l\u00e9gers<\/span><\/h2>\n<figure id=\"attachment_29428\" aria-describedby=\"caption-attachment-29428\" style=\"width: 290px\" class=\"wp-caption alignright\"><a 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\" alt=\"Alliages de magn\u00e9sium\" width=\"300\" height=\"194\" \/><\/a><figcaption id=\"caption-attachment-29428\" class=\"wp-caption-text\"><span>Roues forg\u00e9es en magn\u00e9sium<\/span><\/figcaption><\/figure>\n<p><strong><span>Les alliages l\u00e9gers<\/span><\/strong><span>\u00a0sont largement utilis\u00e9s dans les applications a\u00e9rospatiales, automobiles, architecturales, lithographiques, d&#8217;emballage, \u00e9lectriques et \u00e9lectroniques.\u00a0Ils sont le principal mat\u00e9riau de construction de l&rsquo;industrie a\u00e9ronautique tout au long de son histoire.\u00a0Environ 70% des cellules des avions civils commerciaux sont fabriqu\u00e9es \u00e0 partir d&rsquo;alliages d&rsquo;aluminium, et sans aluminium, l&rsquo;aviation civile ne serait pas \u00e9conomiquement viable.\u00a0Un kilogramme de m\u00e9tal \u00e9conomis\u00e9 dans la conception et la construction d&rsquo;un avion peut entra\u00eener d&rsquo;importantes \u00e9conomies de poids sur les co\u00fbts de construction et sur les besoins totaux en carburant.<\/span><\/p>\n<p><span>D&rsquo;autres m\u00e9taux, tels que l&rsquo;acier et le titane, sont parfois utilis\u00e9s pour construire des avions.\u00a0L&rsquo;acier est lourd, donc on n&rsquo;en utilise pas trop.\u00a0Le titane est presque aussi solide que l&rsquo;acier, a un poids moyen, r\u00e9siste \u00e0 la chaleur et \u00e0 la corrosion.\u00a0Par exemple, le Lockheed SR-71 Blackbird, l&rsquo;avion \u00e0 r\u00e9action le plus rapide au monde, est en titane.\u00a0Dans certains cas, ces alliages l\u00e9gers peuvent \u00eatre remplac\u00e9s par\u00a0<\/span><strong><span>des mat\u00e9riaux composites<\/span><\/strong><span>\u00a0notamment ceux \u00e0 base de fibres de verre, de fibres de carbone et de Kevlar. Ces mat\u00e9riaux composites sont r\u00e9sistants mais peuvent peser deux fois moins que l&rsquo;aluminium.\u00a0Ces mat\u00e9riaux l\u00e9gers et personnalisables sont de plus en plus populaires.\u00a0Plus de la moiti\u00e9 des mat\u00e9riaux utilis\u00e9s pour fabriquer le Boeing 787 Dreamliner sont des composites.<\/span><\/p>\n<p><span>Les alliages l\u00e9gers \u00e0 base de m\u00e9taux peuvent \u00e9galement \u00eatre utilis\u00e9s pour des pi\u00e8ces qui fonctionnent \u00e0 des vitesses \u00e9lev\u00e9es et doivent donc \u00eatre l\u00e9gers pour minimiser les forces d&rsquo;inertie.\u00a0D&rsquo;autres applications commerciales comprennent les outils portatifs, les ordinateurs portables, les bagages et les \u00e9chelles, les automobiles (par exemple, les volants et les colonnes, les cadres de si\u00e8ge, les bo\u00eetiers de transmission).<\/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>Utilisations des m\u00e9taux l\u00e9gers et alliages &#8211; Application<\/span><\/strong><span>, vous aidera.\u00a0Si oui,\u00a0<\/span><strong><span>donnez-nous un like<\/span><\/strong><span>\u00a0dans la barre lat\u00e9rale.\u00a0L&rsquo;objectif principal de ce site Web est d&rsquo;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>Nous esp\u00e9rons que cet article,\u00a0Utilisations des m\u00e9taux l\u00e9gers et alliages &#8211; Application, vous aidera.\u00a0Si oui,\u00a0donnez-nous un like\u00a0dans la barre lat\u00e9rale.\u00a0L&rsquo;objectif principal de ce site Web est d&rsquo;aider le public \u00e0 apprendre des informations int\u00e9ressantes et importantes sur les mat\u00e9riaux et leurs propri\u00e9t\u00e9s. &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>Usages des m\u00e9taux l\u00e9gers et alliages \u2013 Application | Propri\u00e9t\u00e9s mat\u00e9rielles<\/title>\n<meta name=\"description\" content=\"Les alliages l\u00e9gers sont largement utilis\u00e9s dans les applications a\u00e9rospatiales, automobiles, architecturales, lithographiques, d&#039;emballage, \u00e9lectriques et \u00e9lectroniques. 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