Numéro
J. Phys. IV France
Volume 04, Numéro C3, Février 1994
36ème Colloque de Métallurgie de l'INSTN
CHANGEMENTS DE PHASES ET MICROSTRUCTURES
Page(s) C3-151 - C3-156
DOI http://dx.doi.org/10.1051/jp4:1994321
36ème Colloque de Métallurgie de l'INSTN
CHANGEMENTS DE PHASES ET MICROSTRUCTURES

J. Phys. IV France 04 (1994) C3-151-C3-156

DOI: 10.1051/jp4:1994321

[MATH] precipitates in [MATH] Cu-based shape memory alloys : influence on the martensitic transformation and the thermal and pseudoelastic cycling

J. PONS1 and E. CESARI2

1  Lab. Métallurgie Structurale, ENSCP, 11 rue Pierre et Marie Curie, 75231, Paris cedex 05, France
2  Dept. de Fisica, Universitat de les Illes Balears, Ctra. de Valldemossa km 7.5, 07071 Palma de Mallorca, Spain


Abstract
The effect of different distributions of [MATH]-phase precipitates on the martensitic transformation of [MATH] Cu-Zn-Al single crystals is reviewed. The changes of transformation temperatures brought about by the precipitates are related to the changes of the free energy terms included in the thermoelastic balance. In the same way, the evolution of the transformation in samples containing precipitates submitted to thermal and pseudoelastic cycling will be also discussed. In some cases, the presence of precipitates improves the behaviour of the material under cycling.



© EDP Sciences 1994