MECAMAT'95
International Seminar on Mechanics and Mechanisms of Solid-Solid Phase Transformations

J. Phys. IV France 06 (1996) C1-435-C1-444
DOI: 10.1051/jp4:1996142

Structure/Deformation Relationship in a ß Metastable Ti-Alloy

T. Grosdidier¹, C. Roubaud¹, M.-J. Philippe¹, S. Zaefferer², M. Zandona³, E. Gautier³ and Y. Combres<sup>4

1</sup>  Centre de Métallurgie Structurale, CNRS EP 0098, Université de Metz, Ile du Saulcy, 57045 Metz, France
²  Institut für Metallkunde und Metallphysik, T.U., 38678 Clausthal, Germany
³  Laboratoire de Science et Génie des Matériaux Métalliques, URA 159 du CNRS, Ecole des Mines de Nancy, 54042 Nancy, France
⁴  Centre de Recherche de CEZUS, BP. 33, 73400 Ugine, France

Abstract
This paper presents the first results of an ongoing research which was set up to investigate the influence of ß-rich microstructures on the derformation mechanisms of the recently developed ß-Cez alloy. Depending on the heat treatment, strong differences in the mecanical behaviour of this ß metastable alloy were obtained. They can be explained by the relative contribution of slip and formation of stress induced martensite during deformation. The relative contribution of the two mechanisms is influenced by the chemical composition of the ß phase and also by microstructural features. In particular, large ß grains are shown to favour the formation of stress induced martensite.

© EDP Sciences 1996