{"id":116511,"date":"2022-05-19T15:44:20","date_gmt":"2022-05-19T14:44:20","guid":{"rendered":"https:\/\/material-properties.org\/quelle-est-la-durete-de-la-fonte-definition\/"},"modified":"2022-05-20T17:29:14","modified_gmt":"2022-05-20T16:29:14","slug":"quelle-est-la-durete-de-la-fonte-definition","status":"publish","type":"post","link":"https:\/\/material-properties.org\/fr\/quelle-est-la-durete-de-la-fonte-definition\/","title":{"rendered":"Quelle est la duret\u00e9 de la fonte – D\u00e9finition"},"content":{"rendered":"

La duret\u00e9 Brinell de la fonte grise martensitique en fonte blanche (ASTM A532 Classe 1 Type A) est d’environ 600 MPa.\u00a0La duret\u00e9 Brinell de la fonte ductile \u2013 ASTM A536 \u2013 60-40-18 est d’environ 150 \u2013 180 MPa.<\/div><\/div><\/span><\/p>\n

<\/div><\/span><\/p>\n

\n
\"Fonte<\/a>
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’acier, tout en conservant une grande fluidit\u00e9 \u00e0 la fusion et un point de fusion plus bas.<\/span><\/figcaption><\/figure>\n

La fonte<\/span><\/strong> a un point de fusion plus bas (entre environ 1150 \u00b0C et 1300 \u00b0C) que l’acier traditionnel, ce qui la rend plus facile \u00e0 couler que les aciers standards. En raison de sa grande fluidit\u00e9 lorsqu’il est fondu, le fer liquide remplit facilement des moules complexes et peut former des formes complexes.\u00a0La plupart des applications n\u00e9cessitent tr\u00e8s peu de finition, de sorte que les fontes sont utilis\u00e9es pour une grande vari\u00e9t\u00e9 de petites pi\u00e8ces ainsi que de grandes.\u00a0C’est un mat\u00e9riau id\u00e9al pour le moulage au sable dans des formes complexes telles que les collecteurs d’\u00e9chappement sans n\u00e9cessiter d’usinage suppl\u00e9mentaire approfondi.\u00a0De plus, certaines fontes sont tr\u00e8s cassantes et la\u00a0<\/span>coul\u00e9e<\/span><\/strong>\u00a0est la technique de fabrication la plus pratique.\u00a0<\/span>Fers moul\u00e9s <\/span><\/strong>sont devenus un mat\u00e9riau d’ing\u00e9nierie avec une large gamme d’applications et sont utilis\u00e9s dans les tuyaux, les machines et les pi\u00e8ces de l’industrie automobile, telles que les culasses, les blocs-cylindres et les carters de bo\u00eetes de vitesses.\u00a0Il r\u00e9siste aux dommages caus\u00e9s par l’oxydation.<\/span><\/p>\n

Duret\u00e9 de la fonte<\/span><\/span><\/h2>\n

La duret\u00e9 Brinell de la fonte grise (ASTM A48 classe 40) est d’environ 235 MPa.<\/span><\/p>\n

La duret\u00e9 Brinell de la fonte grise de la fonte blanche martensitique (ASTM A532 Classe 1 Type A) est d’environ 600 MPa.<\/span><\/p>\n

La duret\u00e9 Brinell de la fonte mall\u00e9able \u2013 ASTM A220 est d’environ 250 MPa.<\/span><\/p>\n

La duret\u00e9 Brinell de la fonte ductile \u2013 ASTM A536 \u2013 60-40-18 est d’environ 150 \u2013 180 MPa.<\/span><\/p>\n

En science des mat\u00e9riaux, la <\/span>duret\u00e9<\/span><\/strong><\/a> est la capacit\u00e9 \u00e0 r\u00e9sister \u00e0\u00a0<\/span>l’indentation de surface<\/span><\/strong>\u00a0(<\/span>d\u00e9formation plastique localis\u00e9e<\/span><\/strong>) et\u00a0 aux\u00a0<\/span>rayures<\/span><\/strong>.\u00a0<\/span>La duret\u00e9<\/span><\/strong> est probablement la propri\u00e9t\u00e9 mat\u00e9rielle la plus mal d\u00e9finie car elle peut indiquer une r\u00e9sistance aux rayures, une r\u00e9sistance \u00e0 l’abrasion, une r\u00e9sistance \u00e0 l’indentation ou encore une r\u00e9sistance \u00e0 la mise en forme ou \u00e0 la d\u00e9formation plastique localis\u00e9e.\u00a0La duret\u00e9 est importante d’un point de vue technique car la r\u00e9sistance \u00e0 l’usure par frottement ou \u00e9rosion par la vapeur, l’huile et l’eau augmente g\u00e9n\u00e9ralement avec la duret\u00e9.<\/span><\/p>\n

<\/span><\/p><\/div><\/div><\/span><\/p>\n

\n

<\/span>R\u00e9f\u00e9rences :<\/div>
Science des mat\u00e9riaux:<\/div><\/div><\/div><\/span><\/p>\n

D\u00e9partement am\u00e9ricain de l’\u00e9nergie, science des mat\u00e9riaux.\u00a0DOE Fundamentals Handbook, Volume 1 and 2. Janvier 1993.<\/span>
\nUS Department of Energy, Material Science.\u00a0DOE Fundamentals Handbook, Volume 2 et 2. Janvier 1993.<\/span>
\nWilliam 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>
\nEn 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>
\nGaskell, David R. (1995).\u00a0Introduction \u00e0 la thermodynamique des mat\u00e9riaux (4e \u00e9d.).\u00a0\u00c9ditions Taylor et Francis.\u00a0ISBN 978-1-56032-992-3.<\/span>
\nGonz\u00e1lez-Vi\u00f1as, W. & Mancini, HL (2004).\u00a0Une introduction \u00e0 la science des mat\u00e9riaux.\u00a0Presse universitaire de Princeton.\u00a0ISBN 978-0-691-07097-1.<\/span>
\nAshby, 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>
\nJR Lamarsh, AJ Baratta, Introduction au g\u00e9nie nucl\u00e9aire, 3e \u00e9d., Prentice-Hall, 2001, ISBN : 0-201-82498-1.<\/span>
\n<\/span><\/p><\/div><\/div>

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Voir ci-dessus:<\/span>
\nFontes\"\" <\/span><\/a><\/span><\/p><\/div><\/div>[grille lgc_column =\u00a0\u00bb33″ tablet_grid=\u00a0\u00bb33″ mobile_grid=\u00a0\u00bb100″ last=\u00a0\u00bbfalse\u00a0\u00bb][\/lgc_column]<\/span><\/p>\n

<\/div><\/span><\/p>\n

Nous esp\u00e9rons que cet article,\u00a0<\/span>Duret\u00e9 de la fonte<\/span><\/strong>, vous aidera.\u00a0Si oui,\u00a0<\/span>donnez-nous un like<\/span><\/strong>\u00a0dans la barre lat\u00e9rale.\u00a0L’objectif principal de ce site Web est d’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":"

[grille lgc_column =\u00a0\u00bb33″ tablet_grid=\u00a0\u00bb33″ mobile_grid=\u00a0\u00bb100″ last=\u00a0\u00bbfalse\u00a0\u00bb][\/lgc_column] Nous esp\u00e9rons que cet article,\u00a0Duret\u00e9 de la fonte, vous aidera.\u00a0Si oui,\u00a0donnez-nous un like\u00a0dans la barre lat\u00e9rale.\u00a0L’objectif principal de ce site Web est d’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":"\nQuelle est la duret\u00e9 de la fonte - D\u00e9finition | Propri\u00e9t\u00e9s mat\u00e9rielles<\/title>\n<meta name=\"description\" content=\"La duret\u00e9 Brinell de la fonte grise de la fonte blanche martensitique (ASTM A532 Classe 1 Type A) est d'environ 600 MPa. 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