| Numéro |
J. Phys. IV France
Volume 10, Numéro PR6, April 2000
The Sixth Japan-France Materials Science SeminarJFMSS-6 Microstructural Design for Improved Mechanical Behaviour of Advanced Materials |
|
|---|---|---|
| Page(s) | Pr6-21 - Pr6-26 | |
| DOI | https://doi.org/10.1051/jp4:2000604 | |
JFMSS-6
Microstructural Design for Improved Mechanical Behaviour of Advanced Materials
J. Phys. IV France 10 (2000) Pr6-21-Pr6-26
DOI: 10.1051/jp4:2000604
Correlation between microstructure and transformation behaviour in bulk and rapidly solidified shape memory alloys
C. Elgoyhen, M. Larnicol, P. Ochin and R. PortierMétallurgie Structurale, ENSCP, 11 rue Pierre et Marie Curie, 75231 Paris cedex, France, and CECM - CNRS, 15 rue Georges Urbain, 94400 Vitry-sur-Seine, France
Abstract
The martensitic transformation is a structural phase transformation associated with a shape change of the
unit cell. Although this shape change is minimized for thermoelastic martensitic transfomation, it has to be
accommodated by the surrounding material. As a consequence, the transformation characteristics strongly depend on the
microstructure of the material. Designing the properties and characteristics of Shape Memory Alloys, requires a control
of its microstructure during processing. Different processing methods leading to different characteristics of SMAs are
examined in this investigation. In particular, the origin of the multiple martensitic transformation is discussed in terms
of dislocation cells or coherent precipitate distribution present according to the processing of the material.
© EDP Sciences 2000