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Modélisation de l'hétérogénéité dans les alliages à mémoire de forme

Published online by Cambridge University Press:  03 February 2006

Abdel Ilah Alhamany ,
Ouadi Mohammed Bensalah  and
Omar Fassi Fehri
Abdel Ilah Alhamany
Affiliation:
Université Hassan 1er, Faculté Sciences Technique Settat Département de physique, BP 577, Maroc
Ouadi Mohammed Bensalah
Affiliation:
Université Mohamed V, Faculté des Sciences, Rabat, Maroc
Omar Fassi Fehri
Affiliation:
Université Mohamed V, Faculté des Sciences, Rabat, Maroc
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Abstract

Le modèle proposé s'inscrit dans le cadre d'une étude sur le comportement micromécanique métallurgique d'un alliage à mémoire de forme (AMF) Cu-Zn-Al durant la transformation martensitique et l'évolution microstructurale. Le modèle montre que la localisation de la déformation plastique après des sollicitations cycliques entraîne des modifications dans les propriétés mécaniques et thermiques. L'originalité du modèle permet de coupler entre les deux transformations de structures en montrant les mécanismes de déformation nécessaires lors des transformations.

Keywords

Martensitic transformationvariantplasticity dislocationsinternal stressescouplagemetallurgical thermomechanical potentialTransformation martensitiquevarianteplasticitédislocationscontraintes internescouplagepotentiel thermodynamique métallurgique
Type
Research Article
Information
Mechanics & Industry , Volume 6 , Issue 6: Special Issue , November 2005 , pp. 575 - 583
Copyright
© AFM, EDP Sciences, 2006

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