{"id":116515,"date":"2022-05-19T16:46:38","date_gmt":"2022-05-19T15:46:38","guid":{"rendered":"https:\/\/material-properties.org\/quelles-sont-les-proprietes-thermiques-de-la-fonte-ductile-definition\/"},"modified":"2022-05-20T17:35:41","modified_gmt":"2022-05-20T16:35:41","slug":"quelles-sont-les-proprietes-thermiques-de-la-fonte-ductile-definition","status":"publish","type":"post","link":"https:\/\/material-properties.org\/fr\/quelles-sont-les-proprietes-thermiques-de-la-fonte-ductile-definition\/","title":{"rendered":"Quelles sont les propri\u00e9t\u00e9s thermiques de la fonte ductile &#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\">Propri\u00e9t\u00e9s thermiques de la fonte ductile &#8211; Point de fusion et conductivit\u00e9 thermique.\u00a0La fonte ductile a des caract\u00e9ristiques m\u00e9caniques proches de celles de l&rsquo;acier, tout en conservant une fluidit\u00e9 \u00e9lev\u00e9e lorsqu&rsquo;elle est fondue et un point de fusion plus bas.<\/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><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><span>Fonte ductile<\/span><\/h2>\n<figure id=\"attachment_28873\" aria-describedby=\"caption-attachment-28873\" style=\"width: 285px\" class=\"wp-caption alignright\"><a href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/ductile-iron-image.png\"><img decoding=\"async\" loading=\"lazy\" class=\"size-medium wp-image-28873\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/ductile-iron-image-295x300.png\" alt=\"Fonte ductile\" width=\"295\" height=\"300\" \/><\/a><figcaption id=\"caption-attachment-28873\" class=\"wp-caption-text\"><span>La fonte ductile est plus solide et plus r\u00e9sistante aux chocs que la fonte grise.\u00a0En effet, la fonte ductile a des caract\u00e9ristiques m\u00e9caniques proches de celles de l&rsquo;acier, tout en conservant une grande fluidit\u00e9 \u00e0 la fusion et un point de fusion plus bas.<\/span><\/figcaption><\/figure>\n<p><strong><span>La fonte ductile<\/span><\/strong><span>, \u00e9galement connue sous le nom de\u00a0<\/span><strong><span>fonte nodulaire<\/span><\/strong><span>\u00a0ou fonte \u00e0 graphite sph\u00e9ro\u00efdal, est tr\u00e8s similaire \u00e0 la fonte grise dans sa composition, mais lors de la solidification, le graphite se nucl\u00e9e sous forme de\u00a0<\/span><strong><span>particules sph\u00e9riques<\/span><\/strong><span>\u00a0(nodules) dans la fonte ductile, plut\u00f4t que sous forme de flocons.\u00a0<\/span><strong><span>La fonte ductile<\/span><\/strong><span>\u00a0n&rsquo;est pas un mat\u00e9riau unique mais fait partie d&rsquo;un groupe de mat\u00e9riaux qui peuvent \u00eatre produits avec une large gamme de propri\u00e9t\u00e9s gr\u00e2ce au contr\u00f4le de leur microstructure.\u00a0La phase matricielle entourant ces particules est soit de la perlite, soit de la ferrite, selon le traitement thermique.\u00a0<\/span><strong><span>Fonte ductile <\/span><\/strong><span>est plus solide et plus r\u00e9sistante aux chocs que la fonte grise, donc bien qu&rsquo;elle soit plus ch\u00e8re en raison des alliages, elle peut \u00eatre le choix \u00e9conomique pr\u00e9f\u00e9r\u00e9 car une pi\u00e8ce moul\u00e9e plus l\u00e9g\u00e8re peut remplir la m\u00eame fonction.\u00a0La fonte ductile a des caract\u00e9ristiques m\u00e9caniques proches de celles de l&rsquo;acier, tout en conservant une fluidit\u00e9 \u00e9lev\u00e9e lorsqu&rsquo;elle est fondue et un point de fusion plus bas.<\/span><\/p>\n<h2><span>Propri\u00e9t\u00e9s thermiques de la fonte ductile \u2013 ASTM A536 \u2013 60-40-18<\/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<\/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\/\u00a0\u00bb><span>temp\u00e9rature<\/span><span>\u00a0et \u00e0 l&rsquo;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&rsquo;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\/\u00a0\u00bb><span>l&rsquo;\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&rsquo;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&rsquo;utilisation pratique des solides.<\/span><\/p>\n<h3><span>Point de fusion de la fonte ductile \u2013 ASTM A536 \u2013 60-40-18<\/span><\/h3>\n<p><span>Le point de fusion de\u00a0<\/span><strong><span>la fonte ductile \u2013 Acier ASTM A536 \u2013 60-40-18<\/span><\/strong><span> est d&rsquo;environ 1150 \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>\u00a0d&rsquo;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&rsquo;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 de la fonte ductile \u2013 ASTM A536 \u2013 60-40-18<\/span><\/h3>\n<p><span>La conductivit\u00e9 thermique de la fonte ductile est de 36 W\/(mK).<\/span><\/p>\n<p><span>Les caract\u00e9ristiques de transfert de chaleur d&rsquo;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 <\/span><strong><span>W\/mK<\/span><\/strong><span>.\u00a0C&rsquo;est une mesure de la capacit\u00e9 d&rsquo;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&rsquo;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>fonte ductile<a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/metals-what-are-metals\/cast-iron\/ductile-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>Propri\u00e9t\u00e9s thermiques de la fonte ductile<\/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,\u00a0Propri\u00e9t\u00e9s thermiques de la fonte ductile, 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>Quelles sont les propri\u00e9t\u00e9s thermiques de la fonte ductile - D\u00e9finition | Propri\u00e9t\u00e9s mat\u00e9rielles<\/title>\n<meta name=\"description\" content=\"Propri\u00e9t\u00e9s thermiques de la fonte ductile - Point de fusion et conductivit\u00e9 thermique. 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