{"id":116304,"date":"2022-05-12T02:45:30","date_gmt":"2022-05-12T01:45:30","guid":{"rendered":"https:\/\/material-properties.org\/quest-ce-que-le-chrome-alliage-de-metal-definition\/"},"modified":"2022-05-20T09:25:29","modified_gmt":"2022-05-20T08:25:29","slug":"quest-ce-que-le-chrome-alliage-de-metal-definition","status":"publish","type":"post","link":"https:\/\/material-properties.org\/fr\/quest-ce-que-le-chrome-alliage-de-metal-definition\/","title":{"rendered":"Qu&rsquo;est-ce que le chrome &#8211; Alliage de m\u00e9tal &#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\">Le chrome augmente la duret\u00e9, la r\u00e9sistance et la r\u00e9sistance \u00e0 la corrosion.\u00a0L&rsquo;effet de renforcement de la formation de carbures m\u00e9talliques stables aux joints de grains et la forte augmentation de la r\u00e9sistance \u00e0 la corrosion ont fait du chrome un mat\u00e9riau d&rsquo;alliage important pour l&rsquo;acier.<\/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<h2><a href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/304L-austenitic-stainless-steel-figure-min.png\"><img decoding=\"async\" loading=\"lazy\" class=\"alignright size-medium wp-image-29190\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/304L-austenitic-stainless-steel-figure-min-300x300.png\" alt=\"acier inoxydable 304\" width=\"300\" height=\"300\" \/><\/a><span>Chrome dans les aciers inoxydables<\/span><\/h2>\n<p><span>En m\u00e9tallurgie,\u00a0<\/span><strong><span>l&rsquo;acier inoxydable<\/span><\/strong><span>\u00a0est un alliage d&rsquo;acier avec au moins 10,5 % de chrome avec ou sans autres \u00e9l\u00e9ments d&rsquo;alliage et un maximum de 1,2 % de carbone en masse.\u00a0Les aciers inoxydables, \u00e9galement appel\u00e9s aciers inox ou inox du fran\u00e7ais inoxydable (inoxydable), sont\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/metals-what-are-metals\/alloy-steel\/\"><span>des alliages d&rsquo;acier<\/span><\/a><span>, qui sont tr\u00e8s connus pour leur r\u00e9sistance \u00e0 la\u00a0<\/span><strong><span>corrosion<\/span><\/strong><span>, qui augmente avec l&rsquo;augmentation de la teneur en chrome.\u00a0La r\u00e9sistance \u00e0 la corrosion peut \u00e9galement \u00eatre am\u00e9lior\u00e9e par des ajouts de nickel et de molybd\u00e8ne.\u00a0La r\u00e9sistance de ces alliages m\u00e9talliques aux effets chimiques des agents corrosifs repose sur la\u00a0<\/span><strong><span>passivation<\/span><\/strong><span>.\u00a0Pour que la passivation se produise et reste stable, l&rsquo;\u00a0<\/span><strong><span>alliage Fe-Cr<\/span><\/strong><span>\u00a0doit avoir une\u00a0<\/span><strong><span>teneur minimale en chrome d&rsquo;environ 10,5 % en poids<\/span><\/strong><span>, au-dessus duquel la passivit\u00e9 peut se produire et en-dessous duquel elle est impossible.\u00a0Le chrome peut \u00eatre utilis\u00e9 comme \u00e9l\u00e9ment de durcissement et est fr\u00e9quemment utilis\u00e9 avec un \u00e9l\u00e9ment de durcissement tel que le nickel pour produire des propri\u00e9t\u00e9s m\u00e9caniques sup\u00e9rieures.<\/span><\/p>\n<h2><span>Agents d&rsquo;alliage dans les aciers inoxydables<\/span><\/h2>\n<p><span>Le fer pur est trop mou pour \u00eatre utilis\u00e9 \u00e0 des fins de structure, mais l&rsquo;ajout de petites quantit\u00e9s d&rsquo;autres \u00e9l\u00e9ments (carbone, mangan\u00e8se ou silicium par exemple) augmente fortement sa r\u00e9sistance m\u00e9canique.\u00a0<\/span><strong><span>Les alliages<\/span><\/strong><span>\u00a0sont g\u00e9n\u00e9ralement plus r\u00e9sistants que les m\u00e9taux purs, bien qu&rsquo;ils offrent g\u00e9n\u00e9ralement une conductivit\u00e9 \u00e9lectrique et thermique r\u00e9duite.\u00a0<\/span><a href=\"https:\/\/material-properties.org\/what-is-strength-definition\/\"><span>La r\u00e9sistance<\/span><\/a><span>\u00a0est le crit\u00e8re le plus important par lequel de nombreux mat\u00e9riaux de structure sont jug\u00e9s.\u00a0Par cons\u00e9quent, les alliages sont utilis\u00e9s pour la construction m\u00e9canique.\u00a0L&rsquo;effet synergique des \u00e9l\u00e9ments d&rsquo;alliage et du traitement thermique produit une grande vari\u00e9t\u00e9 de microstructures et de propri\u00e9t\u00e9s.<\/span><\/p>\n<ul>\n<li><strong><span>Chrome<\/span><\/strong><span>.\u00a0Le chrome augmente la duret\u00e9, la r\u00e9sistance et la r\u00e9sistance \u00e0 la corrosion.\u00a0L&rsquo;effet de renforcement de la formation de carbures m\u00e9talliques stables aux joints de grains et la forte augmentation de la r\u00e9sistance \u00e0 la corrosion ont fait du chrome un mat\u00e9riau d&rsquo;alliage important pour l&rsquo;acier.\u00a0La r\u00e9sistance de ces alliages m\u00e9talliques aux effets chimiques des agents corrosifs repose sur la passivation.\u00a0Pour que la passivation se produise et reste stable, l&rsquo;alliage Fe-Cr doit avoir une teneur minimale en chrome d&rsquo;environ 11 % en poids, au-dessus de laquelle la passivation peut se produire et en dessous de laquelle elle est impossible.\u00a0Le chrome peut \u00eatre utilis\u00e9 comme \u00e9l\u00e9ment de durcissement et est fr\u00e9quemment utilis\u00e9 avec un \u00e9l\u00e9ment de durcissement tel que le nickel pour produire des propri\u00e9t\u00e9s m\u00e9caniques sup\u00e9rieures.\u00a0\u00c0 des temp\u00e9ratures plus \u00e9lev\u00e9es, le chrome contribue \u00e0 une r\u00e9sistance accrue.\u00a0Les aciers \u00e0 outils rapides contiennent entre 3 et 5 % de chrome.<\/span><\/li>\n<\/ul>\n<p><span>\u00a0<\/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>Acier inoxydable<a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/metals-what-are-metals\/stainless-steel\/\" 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>[grille lgc_column =\u00a0\u00bb33&Prime; tablet_grid=\u00a0\u00bb33&Prime; mobile_grid=\u00a0\u00bb100&Prime; last=\u00a0\u00bbfalse\u00a0\u00bb][\/lgc_column]<\/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>Chrome &#8211; Alliage de m\u00e9tal<\/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","protected":false},"excerpt":{"rendered":"<p>[grille lgc_column =\u00a0\u00bb33&Prime; tablet_grid=\u00a0\u00bb33&Prime; mobile_grid=\u00a0\u00bb100&Prime; last=\u00a0\u00bbfalse\u00a0\u00bb][\/lgc_column] Nous esp\u00e9rons que cet article,\u00a0Chrome &#8211; Alliage de m\u00e9tal, 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.<\/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>Qu&#039;est-ce que le chrome - M\u00e9tal d&#039;alliage - D\u00e9finition | Propri\u00e9t\u00e9s mat\u00e9rielles<\/title>\n<meta name=\"description\" content=\"Le chrome augmente la duret\u00e9, la r\u00e9sistance et la r\u00e9sistance \u00e0 la corrosion. 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