Premium
On the Instability Leading to the Martensitic Transformation of Cu–Zn–Al Single Crystals
Author(s) -
Amazit Y.,
Zarembowitch A.
Publication year - 1992
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221720130
Subject(s) - nucleation , diffusionless transformation , materials science , instability , transformation (genetics) , martensite , shape memory alloy , thermodynamics , microstructure , metallurgy , chemistry , mechanics , physics , biochemistry , gene
Cu–Zn–Al alloys are known to exhibit shape memory properties when the temperature is varied. This behaviour is directly connected to the martensitic transformation that such materials undergo. If the general characteristics of this transformation are well understood, the nucleation mechanism of the transformation is not completely clear. However, it seems that the residual stresses play a major role in the process of nucleation. As a consequence, the measurement of the nonllnear elastic parameters as a function of temperture for shape memory single crystals may clarify the process of nucleation. Such data are reported in this paper; a model is proposed for the interpretation of the experimental results.