Numéro
J. Phys. Colloques
Volume 43, Numéro C4, Décembre 1982
ICOMAT-82
International Conference on Martensitic Transformations
Page(s) C4-647 - C4-652
DOI https://doi.org/10.1051/jphyscol:19824104
ICOMAT-82
International Conference on Martensitic Transformations

J. Phys. Colloques 43 (1982) C4-647-C4-652

DOI: 10.1051/jphyscol:19824104

AN 18R TO HEXAGONAL TRANSFORMATION IN CuZnAl

M. Sade, R. Rapacioli, F.C. Lovey et M. Ahlers

Centro Atómico Bariloche, Comisión Nacional de Energía Atómica, 8400-S.C. de Bariloche, Argentina


Abstract
In the present paper studies of a transformation from the orthorhombic 18R to a hexagonal 2H martensite in Cu-Zn-Al are reported. This structural change was obtained by applying tensile stresses to 18R single crystals which in turn had been stress induced from β phase single crystals of various tensile orientations all deviating more than 28° from a <100>β axis. Two variants of a 2H structure were observed : a) the basal plane parallel to that of the 18R martensite, and also to the habit plane ; and b) the basal plane in the 2H perpendicular to that of the 18R and inclined to the habit plane. The hexagonal structures were analized by TEM and optical microscopy.