J. Phys. IV France 112 (2003) 615
DOI: 10.1051/jp4:2003960

Electron microscopy study of microtexture in Cu-Al-Ni shape memory alloys processed by powder metallurgy

P.P. Rodriguez¹, J. San Jean², A. Iza-Mendia³, V. Recarte⁴, J.J. Pérez-Landazabal⁴ and M.L. No<sup>1

1</sup>  Departamento de Fisica Aplicada II, Facultad de Ciencias, Universidad del Pais Vasco, Apdo. 644, 48080 Bilbao, Spain
²  Departamento de Fisica Materia Condensada, Facultad de Ciencias, Universidad del Pais Vasco/EHU, 48080 Bilbao, Spain
³  Centro de Estudios e lnvestigaciones Técnicas de Gipuzkoa, Paseo Manuel Lardizabal 15, 28015 San Sebastian, Spain
⁴  Departamento de Fisica, Universidad Publica de Navarra, Campus de Arrosadia s/n, 31006 Pamplona, Spain

Abstract
Cu-AI-Ni shape memory alloys processed by powder metallurgy show very good thermomechanical properties, being the mechanical behavior similar to the one observed in single crystals. In this paper we present the microstructural characterization of a sample elaborated by powder metallurgy in two different stages of the process: after being compacted by Hot Isostatic Pressing (HIP) and after compaction and hot rolling, in order to find the microscopic mechanisms responsible of their mechanical behavior. The characterization has been carried out by means of Scanning Electron Microscopy using Backscattered Electron Imaging (SEM-BSE) and Electron BackScattered Diffraction (EBSD), as well as Transmission Electron Microscopy (TEM).

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