Numéro |
J. Phys. IV France
Volume 112, October 2003
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Page(s) | 519 - 522 | |
DOI | https://doi.org/10.1051/jp4:2003938 |
J. Phys. IV France 112 (2003) 519
DOI: 10.1051/jp4:2003938
Structure and mobility of martensite variant interfaces in a Cu-Zn-AI shape memory alloy
W. Cai, J.X. Zhang, Y.F. Zheng and L.C. ZhaoSchool of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Abstract
The structure and mobility of martensite variant interfaces have been investigated using TEM and HREM observations, and then
the relations of interface structure to its mobility are revealed. It is shown that the A/C interface is straight, well-defined
and perfectly coherent. The A/B interface is irrational, coherent and gradually curved. The A/D interface is stepped and the
interface steps are the basal planes of the two variants. The intervariant-group interfaces are curved and blurred and some
variants are tapered at the intervariant-group interface. The A/C and A/B interface have obvious mobility and may move smoothly
and remain straight during moving. The mobility is not effective for A/D interface, and even worse for intervariant-group
interfaces. The morphology, structure and mobility of interplate boundary are all related to the degree of self-accommodation
and the misorientation of the twin boundary.
© EDP Sciences 2003