{"id":116510,"date":"2022-05-19T15:28:45","date_gmt":"2022-05-19T14:28:45","guid":{"rendered":"https:\/\/material-properties.org\/quelle-est-la-force-de-la-fonte-definition\/"},"modified":"2022-05-20T17:28:23","modified_gmt":"2022-05-20T16:28:23","slug":"quelle-est-la-force-de-la-fonte-definition","status":"publish","type":"post","link":"https:\/\/material-properties.org\/fr\/quelle-est-la-force-de-la-fonte-definition\/","title":{"rendered":"Quelle est la force de la fonte – D\u00e9finition"},"content":{"rendered":"

La r\u00e9sistance ultime \u00e0 la traction de la fonte grise (ASTM A48 Classe 40) est de 295 MPa. La r\u00e9sistance ultime \u00e0 la traction de la fonte blanche martensitique (ASTM A532 Classe 1 Type A) est de 350 MPa.\u00a0R\u00e9sistance de la fonte<\/div><\/div><\/span><\/p>\n

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

\n
\"fonte<\/a>
La fonte grise a \u00e9galement une excellente capacit\u00e9 d’amortissement, qui est donn\u00e9e par le graphite car il absorbe l’\u00e9nergie et la convertit en chaleur.\u00a0Une grande capacit\u00e9 d’amortissement est souhaitable pour les mat\u00e9riaux utilis\u00e9s dans les structures o\u00f9 des vibrations ind\u00e9sirables sont induites pendant le fonctionnement, telles que les bases de machines-outils ou les vilebrequins.<\/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

R\u00e9sistance de la fonte<\/span><\/span><\/h2>\n

En m\u00e9canique des mat\u00e9riaux, la <\/span>r\u00e9sistance d’un mat\u00e9riau<\/span><\/strong><\/a> est sa capacit\u00e9 \u00e0 supporter une charge appliqu\u00e9e sans rupture ni d\u00e9formation plastique.\u00a0<\/span>La r\u00e9sistance des mat\u00e9riaux<\/span><\/strong> consid\u00e8re essentiellement la relation entre les\u00a0<\/span>charges externes<\/span><\/strong> appliqu\u00e9es \u00e0 un mat\u00e9riau et la\u00a0<\/span>d\u00e9formation<\/span><\/strong>\u00a0ou la modification des dimensions du mat\u00e9riau qui en r\u00e9sulte.\u00a0<\/span>La r\u00e9sistance d’un mat\u00e9riau<\/span><\/strong> est sa capacit\u00e9 \u00e0 supporter cette charge appliqu\u00e9e sans d\u00e9faillance ni d\u00e9formation plastique.<\/span><\/p>\n

R\u00e9sistance \u00e0 la traction ultime<\/span><\/span><\/h3>\n

La r\u00e9sistance \u00e0 la traction ultime de la fonte grise (ASTM A48 classe 40) est de 295 MPa.<\/span><\/p>\n

La r\u00e9sistance \u00e0 la traction ultime de la fonte blanche martensitique (ASTM A532 Classe 1 Type A) est de 350 MPa.<\/span><\/p>\n

R\u00e9sistance \u00e0 la traction ultime de la fonte mall\u00e9able – ASTM A220 est de 580 MPa.<\/span><\/p>\n

La r\u00e9sistance \u00e0 la traction ultime de la fonte ductile \u2013 ASTM A536 \u2013 60-40-18 est de 414 Mpa (>60 ksi).<\/span><\/p>\n

La <\/span>r\u00e9sistance \u00e0 la traction ultime<\/span><\/strong><\/a> est le maximum sur la <\/span>courbe technique de contrainte-d\u00e9formation<\/span><\/a>.\u00a0Cela correspond \u00e0 la <\/span>contrainte maximale<\/span><\/strong> que peut supporter une structure en tension.\u00a0La r\u00e9sistance \u00e0 la traction ultime est souvent abr\u00e9g\u00e9e en \u00ab\u00a0r\u00e9sistance \u00e0 la traction\u00a0\u00bb ou m\u00eame en \u00ab\u00a0l’ultime\u00a0\u00bb.\u00a0Si cette contrainte est appliqu\u00e9e et maintenue, une fracture en r\u00e9sultera.<\/span><\/p>\n

Module de Young<\/span><\/span><\/h3>\n

Le module de Young de la fonte grise (ASTM A48 Classe 40) est de 124 GPa.<\/span><\/p>\n

Le module de Young de la fonte blanche martensitique (ASTM A532 Classe 1 Type A) est de 175 GPa.<\/span><\/p>\n

Le module de Young de la fonte mall\u00e9able – ASTM A220 est de 172 GPa.<\/span><\/p>\n

Le module\u00a0<\/span>de Young de la fonte ductile\u00a0 \u2013 ASTM A536 \u2013 60-40-18 est de 170 GPa.<\/p>\n

Le\u00a0\u00a0<\/span>module de Young est le module d’\u00e9lasticit\u00e9<\/span><\/a>\u00a0\u00a0pour les contraintes de traction et de compression dans le r\u00e9gime d’\u00e9lasticit\u00e9 lin\u00e9aire d’une d\u00e9formation uniaxiale et est g\u00e9n\u00e9ralement \u00e9valu\u00e9 par des essais de traction.\u00a0Jusqu’\u00e0 une contrainte limite, une caisse pourra retrouver ses dimensions au retrait de la charge.<\/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>Strength of Cast Iron<\/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,\u00a0Strength of Cast Iron, 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 force de la fonte - D\u00e9finition | Propri\u00e9t\u00e9s mat\u00e9rielles<\/title>\n<meta name=\"description\" content=\"La r\u00e9sistance \u00e0 la traction ultime de la fonte grise (ASTM A48 Classe 40) est de 295 MPa. 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