Troisiéme Conférence Européenne sur les Matériaux et les Procédés Avancés
J. Phys. IV France 03 (1993) C7-557-C7-560
Improvement of the shape memory effect of a Fe-Mn-Cr-Si-Ni by original thermomechanical treatmentsL. FEDERZONI1, 2, G. GUÉNIN1 and M. MANTEL2
1 GEMPPM, Bât. 502, Institut National des Sciences Appliquées, 69621 Villeurbanne cedex, France
2 Centre de Recherche Ugine, Ugine Savoie, 73403 Ugine cedex, France
Among the shape memory alloys, Fe-based have real perspectives of industrial development. However, to acquire a good shape memory effect, these alloys must undergo a thermomechanical treatment. For applcation perspective this treatment must be the simpliest as possible. In this paper, two types of treatment have been performed, based of the fact that : - the formation of the martensite γ, responsible for the shape memory effect, is sensitive to the microstructure - its reversibility is the best as possible if the austenite is previously hardened by a deformation at high temperature.
© EDP Sciences 1993