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Articles:

Longuet, A., Robert, Y., Aeby-Gautier, E., Appolaire, B., Mariage, J. F., Colin, C. and Cailletaud, G.
Computational Material Science, 46(3):761-766
2009
ISSN: 0927-0256

Resume: A multiphase model for Ti-6Al-4V is proposed. This material is widely used in industrial applications and so needs accurate behaviour modeling. Tests have been performed in the temperature range from 25 degrees C to 1020 degrees C and at strain rates between 10(-3) s(-1) and 1 s(-1). This allowed the identification of a multiphase mechanical model coupled with a metallurgical model. The behaviour of each phase is calibrated by solving an inverse problem including a phase transformation model and a mechanical model to simulate tests under thermomechanical loadings. A scale transition rule (beta-rule) is proposed in order to represent the redistribution of local stresses linked to the heterogeneity of plastic strain. Finally this model is applied to two laser assisted processes: direct laser fabrication and laser welding. (C) 2009 Elsevier B.V. All rights reserved.

Equipe: Département SI2M : Microstructures et Contraintes

Ammar, Kais, Appolaire, Benoit, Cailletaud, Georges and Forest, Samuel
European Journal of Computational Mechanics, 18(5-6):485-523
2009
ISSN: 1779-7179

Equipe: Département SI2M : Microstructures et Contraintes

Ammar, Kais, Appolaire, Benoit, Cailletaud, Georges, Feyel, Frederic and Forest, Samuel
Computational Materials Science, 45(3):800-805
2009
ISSN: 0927-0256

Equipe: Département SI2M : Microstructures et Contraintes

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