Experimental characterization and mechanical behaviour modelling of molybdenum-titanium carbide composite for high temperature applications

Denis Cédat 1 Maximilien Libert 1 Marion Le Flem 2 Olivier Fandeur 3, 4 Colette Rey 1 Michel Clavel 1 Jean-Hubert Schmitt 1
1 MSSMat - Laboratoire de mécanique des sols, structures et matériaux
2 SRMA - Service des Recherches Métallurgiques Appliquées
DMN - Département des Matériaux pour le Nucléaire : DEN/DMN
3 IMSIA - UMR 9219 - Institut des Sciences de la mécanique et Applications industrielles
4 LM2S - Laboratoire de Mécanique Systèmes et Simulation
DM2S - Département de Modélisation des Systèmes et Structures : DEN/DM2S/SEMT
Abstract : Simulations of the elastic-viscoplastic behaviour of ceramic-metal composite, over the temperature range 298-993 K, \are performed on realistic aggregates built up from electron back scatter diffraction methods. Physical based constitutive models are developed in order to characterize the deformation behaviour of body centered cubic (bcc) metal and face centered cubic (fcc) ceramic under various temperatures. While the ceramic keeps elastic, the viscoplastic behaviour of the metal part is described with a dislocation - based model, implemented in the finite element code ABAQUS, in order to compute local strain and stress fields during compressive tests. It is shown that the adopted constitutive laws are able to give back local complex experimental evidence on weak points of the microstructure. (C) 2008 Elsevier Ltd. All rights reserved.
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International Journal of Refractory Metals and Hard Materials, Elsevier, 2009, 27 (2), pp.267-273. 〈10.1016/j.ijrmhm.2008.09.018〉
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Soumis le : mercredi 27 juillet 2016 - 11:54:00
Dernière modification le : lundi 15 octobre 2018 - 16:37:03

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CEA | ENSTA_UME | DEN | MSSMAT | CENTRALESUPELEC | ENSTA | DEN-SACLAY

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Denis Cédat, Maximilien Libert, Marion Le Flem, Olivier Fandeur, Colette Rey, et al.. Experimental characterization and mechanical behaviour modelling of molybdenum-titanium carbide composite for high temperature applications. International Journal of Refractory Metals and Hard Materials, Elsevier, 2009, 27 (2), pp.267-273. 〈10.1016/j.ijrmhm.2008.09.018〉. 〈hal-01349345〉

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