{"id":116842,"date":"2022-05-24T20:14:42","date_gmt":"2022-05-24T19:14:42","guid":{"rendered":"https:\/\/material-properties.org\/quest-ce-que-lecrouissage-definition\/"},"modified":"2022-05-25T13:44:50","modified_gmt":"2022-05-25T12:44:50","slug":"quest-ce-que-lecrouissage-definition","status":"publish","type":"post","link":"https:\/\/material-properties.org\/fr\/quest-ce-que-lecrouissage-definition\/","title":{"rendered":"Qu’est-ce que l’\u00e9crouissage – D\u00e9finition"},"content":{"rendered":"

L’une des \u00e9tapes de la courbe contrainte-d\u00e9formation est la r\u00e9gion d’\u00e9crouissage.\u00a0Cette r\u00e9gion commence lorsque la d\u00e9formation d\u00e9passe le point d’\u00e9lasticit\u00e9 et se termine au point de r\u00e9sistance ultime.<\/div><\/div><\/span><\/p>\n

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

\n

\"Courbe<\/a><\/p>\n

L’une des \u00e9tapes de la\u00a0<\/span>courbe contrainte-d\u00e9formation<\/span><\/strong>\u00a0est la\u00a0<\/span>r\u00e9gion d’\u00e9crouissage<\/span><\/strong>.\u00a0Cette r\u00e9gion commence lorsque la d\u00e9formation\u00a0<\/span>d\u00e9passe la limite d’\u00e9lasticit\u00e9<\/span><\/strong>\u00a0et se termine au point de r\u00e9sistance ultime, qui est la contrainte maximale indiqu\u00e9e sur la courbe contrainte-d\u00e9formation.\u00a0Dans cette r\u00e9gion, la contrainte augmente principalement \u00e0 mesure que le mat\u00e9riau s’allonge, sauf qu’il y a une r\u00e9gion presque plate au d\u00e9but.\u00a0<\/span>L’\u00e9crouissage<\/span><\/strong>\u00a0est aussi appel\u00e9\u00a0<\/span>\u00e9crouissage<\/span><\/strong>\u00a0ou\u00a0<\/span>travail \u00e0 froid<\/span><\/strong>.\u00a0C’est ce qu’on appelle le travail \u00e0 froid car la d\u00e9formation plastique doit se produire \u00e0 une temp\u00e9rature suffisamment basse pour que les atomes ne puissent pas se r\u00e9arranger.\u00a0C’est un processus qui rend un m\u00e9tal plus dur et plus r\u00e9sistant par d\u00e9formation plastique.\u00a0Lorsqu’un m\u00e9tal est d\u00e9form\u00e9 plastiquement, <\/span>les dislocations<\/span><\/a>\u00a0se d\u00e9placent et des dislocations suppl\u00e9mentaires sont g\u00e9n\u00e9r\u00e9es.\u00a0Les dislocations peuvent se d\u00e9placer si les atomes de l’un des plans environnants rompent leurs liaisons et rebondissent avec les atomes au bord de terminaison.\u00a0La densit\u00e9 de dislocations dans un m\u00e9tal augmente avec la d\u00e9formation ou le travail \u00e0 froid en raison de la multiplication des dislocations ou de la formation de nouvelles dislocations.\u00a0Plus il y a de dislocations dans un mat\u00e9riau, plus elles interagissent et s’\u00e9pinglent ou s’emm\u00ealent.\u00a0Il en r\u00e9sultera une diminution de la mobilit\u00e9 des luxations et un renforcement du mat\u00e9riau.<\/span><\/p>\n

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

\n

<\/span>References :<\/div>
\u00a0<\/div><\/div><\/div><\/span>Science des mat\u00e9riaux:<\/span><\/strong><\/p>\n
    \n
  1. D\u00e9partement am\u00e9ricain de l’\u00e9nergie, science des mat\u00e9riaux.\u00a0DOE Fundamentals Handbook, Volume 1 et 2. Janvier 1993.<\/span><\/li>\n
  2. D\u00e9partement am\u00e9ricain de l’\u00e9nergie, science des mat\u00e9riaux.\u00a0DOE Fundamentals Handbook, Volume 2 et 2. Janvier 1993.<\/span><\/li>\n
  3. 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><\/li>\n
  4. 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><\/li>\n
  5. 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><\/li>\n
  6. Gonzalez-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><\/li>\n
  7. 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><\/li>\n
  8. JR Lamarsh, AJ Baratta, Introduction au g\u00e9nie nucl\u00e9aire, 3e \u00e9d., Prentice-Hall, 2001, ISBN : 0-201-82498-1.<\/span><\/li>\n<\/ol>\n

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

    <\/div>
    <\/div>
    <\/div><\/div>
    \n

    Voir au dessus:<\/span><\/h2>\n

    Strength<\/i> <\/span><\/a><\/p><\/div><\/div>

    <\/div><\/div>\n
    <\/div>\n

    Nous esp\u00e9rons que cet article,\u00a0<\/span>Strain Hardening<\/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":"

    Nous esp\u00e9rons que cet article,\u00a0Strain Hardening, 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":"\nQu'est-ce que l'\u00e9crouissage - D\u00e9finition | Propri\u00e9t\u00e9s mat\u00e9rielles<\/title>\n<meta name=\"description\" content=\"L'une des \u00e9tapes de la courbe contrainte-d\u00e9formation est la r\u00e9gion d'\u00e9crouissage. 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