38éme Colloque de Métallurgie de l'INSTN
Les intermétalliques : des superalliages aux quasicristaux

J. Phys. IV France 06 (1996) C2-263-C2-268
DOI: 10.1051/jp4:1996238

Rôle des interfaces dans les mécanismes élémentaires de déformation des superalliages base nickel

B. Décamps¹, V. Brien², J.M. Pénisson³, A.J. Morton⁴ and M. Condat<sup>1

1</sup>  Laboratoire de Métallurgie Structurale, URA 1107 du CNRS, Université Paris-Sud, Bât. 413, 91405 Orsay cedex, France
²  Laboratoire d'Etudes des Microstructures, UMR 104, BP. 72, 92322 Châtillon s/Bagneux, France
³  CEA/Département de Recherche Fondamentale sur la Matière Condensée (SP2M/S), CENG, 17 Rue des Martyrs, 38054 Grenoble Cedex 9, France
⁴  CSIRO, Division of Materials Science and Technology, Private Bug 33, Rosebank MDC, Clayton, Victoria 3169, Australie

Abstract
γ/ γ' interfaces play an important part in the behaviour of the Ni-based superalloys used in the aeronautic industry. In particular, the description of the interaction between dislocations and interfaces is essential to understand the behaviour of these alloys under thermal and/or mechanical loading. A fine analysis at different levels of the behaviour of these dislocations after different mechanical tests (creep, dynamical tests, fatigue) allowed us to describe the elementary mechanisms that control the deformation.

© EDP Sciences 1996