{"id":116518,"date":"2022-05-19T17:33:20","date_gmt":"2022-05-19T16:33:20","guid":{"rendered":"https:\/\/material-properties.org\/quelle-est-la-composition-de-la-fonte-malleable-definition\/"},"modified":"2022-05-20T17:44:38","modified_gmt":"2022-05-20T16:44:38","slug":"quelle-est-la-composition-de-la-fonte-malleable-definition","status":"publish","type":"post","link":"https:\/\/material-properties.org\/fr\/quelle-est-la-composition-de-la-fonte-malleable-definition\/","title":{"rendered":"Quelle est la composition de la fonte mall\u00e9able &#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\">Composition de la fonte mall\u00e9able.\u00a0La fonte mall\u00e9able contient des nodules de graphite qui ne sont pas vraiment sph\u00e9riques comme dans la fonte ductile, car ils se forment \u00e0 la suite d&rsquo;un traitement thermique plut\u00f4t que lors du refroidissement de la fonte.<\/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<figure id=\"attachment_27617\" aria-describedby=\"caption-attachment-27617\" style=\"width: 290px\" class=\"wp-caption alignright\"><a href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/Fe-Fe3C-Phase-Diagram.png\"><img decoding=\"async\" loading=\"lazy\" class=\"size-medium wp-image-27617\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/Fe-Fe3C-Phase-Diagram-300x211.png\" alt=\"Diagramme de phase Fe-Fe3C\" width=\"300\" height=\"211\" \/><\/a><figcaption id=\"caption-attachment-27617\" class=\"wp-caption-text\"><span>Dans la figure, il y a le diagramme de phase fer-carbure de fer (Fe-Fe3C).\u00a0Le pourcentage de carbone pr\u00e9sent et la temp\u00e9rature d\u00e9finissent la phase de l&rsquo;alliage fer-carbone et donc ses caract\u00e9ristiques physiques et ses propri\u00e9t\u00e9s m\u00e9caniques.\u00a0Le pourcentage de carbone d\u00e9termine le type d&rsquo;alliage ferreux: fer, acier ou fonte. Source: wikipedia.org L\u00e4pple, Volker &#8211; W\u00e4rmebehandlung des Stahls Grundlagen. Licence : CC BY-SA 4.0<\/span><\/figcaption><\/figure>\n<p><span>Dans l&rsquo;ing\u00e9nierie des mat\u00e9riaux, les\u00a0<\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/metals-what-are-metals\/cast-iron\/\"><strong><span>fontes<\/span><\/strong><\/a><span>\u00a0sont une classe d&rsquo;alliages ferreux avec une teneur en carbone\u00a0<\/span><strong><span>sup\u00e9rieure \u00e0 2,14 % en poids<\/span><\/strong><span>\u00a0.\u00a0En r\u00e8gle g\u00e9n\u00e9rale, les fontes contiennent de\u00a0<\/span><strong><span>2,14 % en poids \u00e0 4,0 % en poids de carbone<\/span><\/strong><span>\u00a0et de 0,5 % en poids \u00e0 3 % en poids de\u00a0<\/span><strong><span>silicium<\/span><\/strong><span>.\u00a0Les alliages de fer \u00e0 faible teneur en carbone sont connus sous le nom d&rsquo;\u00a0<\/span><a href=\"https:\/\/material-properties.org\/what-are-steels-properties-of-steels-definition\/\"><span>acier<\/span><\/a><span>.\u00a0La diff\u00e9rence est que les fontes peuvent profiter de la\u00a0<\/span><strong><span>solidification eutectique<\/span><\/strong><span>\u00a0dans le syst\u00e8me binaire fer-carbone.\u00a0Le terme eutectique est grec pour \u00ab<\/span><strong><span>fusion facile ou bien<\/span><\/strong><span>\u00bb, et le point eutectique repr\u00e9sente la composition sur le diagramme de phase o\u00f9 la\u00a0<\/span><strong><span>temp\u00e9rature de fusion<\/span><\/strong><span>\u00a0la plus basse est atteinte.\u00a0Pour le syst\u00e8me fer-carbone, le\u00a0<\/span><strong><span>point eutectique<\/span><\/strong><span>se produit \u00e0 une composition de 4,26 % en poids C et \u00e0 une temp\u00e9rature de\u00a0<\/span><strong><span>1148 \u00b0C<\/span><\/strong><span>.<\/span><\/p>\n<p><span>Voir aussi: <\/span><a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/metals-what-are-metals\/cast-iron\/types-of-cast-irons\/\"><span>Types de fontes<\/span><\/a><\/p>\n<h2><strong><span>Fonte mall\u00e9able<\/span><\/strong><\/h2>\n<p><strong><span>La fonte mall\u00e9able<\/span><\/strong><span>\u00a0est une fonte blanche qui a \u00e9t\u00e9 recuite.\u00a0Gr\u00e2ce \u00e0 un traitement thermique de recuit, la\u00a0<\/span><strong><span>structure fragile<\/span><\/strong><span>\u00a0de la premi\u00e8re coul\u00e9e est transform\u00e9e en une\u00a0<\/span><strong><span>forme mall\u00e9able<\/span><\/strong><span>.\u00a0Par cons\u00e9quent, sa composition est tr\u00e8s similaire \u00e0 celle de la fonte blanche, avec des quantit\u00e9s l\u00e9g\u00e8rement sup\u00e9rieures de carbone et de silicium.\u00a0<\/span><strong><span>Fer mall\u00e9able <\/span><\/strong><span>contient des nodules de graphite qui ne sont pas vraiment sph\u00e9riques comme ils le sont dans la fonte ductile, car ils se forment \u00e0 la suite d&rsquo;un traitement thermique plut\u00f4t que lors du refroidissement de la masse fondue.\u00a0La fonte mall\u00e9able est fabriqu\u00e9e en coulant d&rsquo;abord un fer blanc afin d&rsquo;\u00e9viter les flocons de graphite et que tout le carbone non dissous soit sous forme de carbure de fer.\u00a0La fonte mall\u00e9able commence par une coul\u00e9e de fonte blanche qui est ensuite trait\u00e9e thermiquement pendant un jour ou deux \u00e0 environ 950 \u00b0 C (1 740 \u00b0 F), puis refroidie pendant un jour ou deux.\u00a0En cons\u00e9quence, le carbone du carbure de fer se transforme en nodules de graphite entour\u00e9s d&rsquo;une matrice de ferrite ou de perlite, selon la vitesse de refroidissement.\u00a0Le processus lent permet \u00e0 la tension superficielle de former des nodules de graphite plut\u00f4t que des flocons.\u00a0.\u00a0La fonte mall\u00e9able, comme la fonte ductile,\u00a0poss\u00e8de une ductilit\u00e9 et une t\u00e9nacit\u00e9 consid\u00e9rables en raison de sa combinaison de graphite nodulaire et de matrice m\u00e9tallique \u00e0 faible teneur en carbone.\u00a0Comme la fonte ductile, la fonte mall\u00e9able pr\u00e9sente \u00e9galement une haute r\u00e9sistance \u00e0 la corrosion, une excellente usinabilit\u00e9.\u00a0Le <\/span><strong><span>la bonne capacit\u00e9 d&rsquo;amortissement<\/span><\/strong><span>\u00a0et la r\u00e9sistance \u00e0 la fatigue de la fonte mall\u00e9able sont \u00e9galement utiles pour un long service dans des pi\u00e8ces fortement sollicit\u00e9es.\u00a0Il existe deux types de fonte mall\u00e9able ferritique: \u00e0 c\u0153ur noir et \u00e0 c\u0153ur blanc.<\/span><\/p>\n<p><span>Il est souvent utilis\u00e9 pour les petites pi\u00e8ces moul\u00e9es n\u00e9cessitant une bonne r\u00e9sistance \u00e0 la traction et la capacit\u00e9 de fl\u00e9chir sans se rompre (ductilit\u00e9).\u00a0Les applications des fontes mall\u00e9ables comprennent de nombreuses pi\u00e8ces automobiles essentielles telles que les supports de diff\u00e9rentiel, les carters de diff\u00e9rentiel, les chapeaux de palier, les bo\u00eetiers de direction .\u00a0Une autre utilisation comprend les outils \u00e0 main, les supports, les pi\u00e8ces de machine, les raccords \u00e9lectriques, les raccords de tuyauterie, l&rsquo;\u00e9quipement agricole et le mat\u00e9riel minier.<\/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>fonte mall\u00e9able<a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/metals-what-are-metals\/cast-iron\/malleable-cast-iron\/\" 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>Composition de la fonte mall\u00e9able<\/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,\u00a0Composition de la fonte mall\u00e9able, 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>Quelle est la composition de la fonte mall\u00e9able - D\u00e9finition | Propri\u00e9t\u00e9s mat\u00e9rielles<\/title>\n<meta name=\"description\" content=\"Composition de fonte mall\u00e9able. 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