{"id":115968,"date":"2022-05-08T14:28:33","date_gmt":"2022-05-08T13:28:33","guid":{"rendered":"https:\/\/material-properties.org\/quest-ce-que-la-temperature-critique-de-lacier-definition\/"},"modified":"2022-05-11T07:42:04","modified_gmt":"2022-05-11T06:42:04","slug":"quest-ce-que-la-temperature-critique-de-lacier-definition","status":"publish","type":"post","link":"https:\/\/material-properties.org\/fr\/quest-ce-que-la-temperature-critique-de-lacier-definition\/","title":{"rendered":"Qu&rsquo;est-ce que la temp\u00e9rature critique de l&rsquo;acier &#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\">La temp\u00e9rature critique de l&rsquo;acier d\u00e9finit la transition de phase entre deux phases de l&rsquo;acier.\u00a0Lorsque l&rsquo;acier est chauff\u00e9 au-dessus de la temp\u00e9rature critique, environ 1335\u00a0\u00b0F (724\u00a0\u00b0C), il subit un changement de phase, se recristallisant sous forme d&rsquo;aust\u00e9nite.<\/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><span>Temp\u00e9rature critique de l&rsquo;acier<\/span><\/h2>\n<p><span>La temp\u00e9rature critique de l&rsquo;acier d\u00e9finit la transition de phase entre deux phases de l&rsquo;acier.\u00a0Lorsque l&rsquo;\u00a0<\/span><strong><span>acier<\/span><\/strong><span>\u00a0est chauff\u00e9 au-dessus de la\u00a0<\/span><strong><span>temp\u00e9rature critique<\/span><\/strong><span>, environ 1335 \u00b0F (724 \u00b0C), il subit un changement de phase, se recristallisant en aust\u00e9nite. Il existe deux types de temp\u00e9rature critique:<\/span><\/p>\n<ul>\n<li><span>Temp\u00e9rature critique inf\u00e9rieure (Ac1).\u00a0La temp\u00e9rature \u00e0 laquelle l&rsquo;aust\u00e9nite commence \u00e0 se transformer \u00e0 partir de la ferrite.<\/span><\/li>\n<li><span>Temp\u00e9rature critique sup\u00e9rieure (Ac3).\u00a0La temp\u00e9rature \u00e0 laquelle l&rsquo;aust\u00e9nite est compl\u00e8tement transform\u00e9e \u00e0 partir de la ferrite.<\/span><\/li>\n<\/ul>\n<p><span>Dans le syst\u00e8me Fe-C, il y a un\u00a0<\/span><strong><span>point eutecto\u00efde<\/span><\/strong><span> \u00e0 environ 0,8% en poids C, 723 \u00b0C.\u00a0La phase juste au-dessus de la\u00a0<\/span><strong><span>temp\u00e9rature eutecto\u00efde<\/span><\/strong><span>\u00a0pour les aciers au carbone simples est connue sous le nom d&rsquo;aust\u00e9nite ou gamma.<\/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>Diagramme de phase<a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/materials-science\/phase-diagrams-of-iron-carbon-system\/\" 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>[\/lgc_column ]<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><\/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>Temp\u00e9rature critique de l&rsquo;acier<\/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>Nous esp\u00e9rons que cet article,\u00a0Temp\u00e9rature critique de l&rsquo;acier, 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 la temp\u00e9rature critique de l&#039;acier - D\u00e9finition | Propri\u00e9t\u00e9s mat\u00e9rielles<\/title>\n<meta name=\"description\" content=\"La temp\u00e9rature critique de l&#039;acier d\u00e9finit la transition de phase entre deux phases de l&#039;acier. 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