ESOMAT 2009, 05005 (2009)
DOI: 10.1051/esomat/200905005

Stable phase formation in a 85.67 wt.% Cu- 9.9 wt.% Al- 4.43 wt.% Ni shape memory alloy

S.M. Chentouf¹, M. Bouabdallah², H. Cheniti¹ and M. Keddam<sup>1

1</sup>  Département de Science des Matériaux, Faculté de Génie Mécanique et de Génie des Procédés, Université des Sciences et de la Technologie Houari Boumedienne, B.P.32, 16111 El-Alia Bab-Ezzouar, Alger, Algérie.
²  Laboratoire de Génie Sismique et Dynamique des Structures, Ecole Nationale Polytechnique d’Alger, B.P. 182, 10 Avenue Hassen Badi, 16200, El-Harrach, Alger, Algérie.

chent_s@yahoo.com

Published online: 1 September 2009

Abstract
85.67 wt.% Cu- 9.9 wt.% Al- 4.43 wt.% Ni shape memory alloy has been studied. Polycrystalline specimens have been quenched, into water, after heat treatment at high temperature and followed by two successive runs from room temperature to 923 K and inversely. The microstructural and thermodynamic studies presented in this work have been performed using DSC (Differential Scanning Calorimetry), X-ray diffraction analysis at a variable temperature and TEM (Transmission Electron Microscopy) analysis. Stable phase precipitation of AlNi type was observed to appear in this alloy. Keywords: Martensitic transformation; Shape memory alloys; AlNi precipitation.

© Owned by the authors, published by EDP Sciences 2009