Free Access
| Issue |
J. Phys. IV France
Volume 07, Number C5, November 1997
IVth European Symposium on Martensitic Transformations
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| Page(s) | C5-573 - C5-578 | |
| DOI | https://doi.org/10.1051/jp4:1997591 | |
IVth European Symposium on Martensitic Transformations
J. Phys. IV France 07 (1997) C5-573-C5-578
DOI: 10.1051/jp4:1997591
1 Institute of Physics, Academy of Sciences of the Czech Republic, Na Slovance 2, Prague 8, 18040 Czech Republic
2 Faculty of Engineering, Mie University Kamihama-cho 1515, Tsu, Mie 514, Japan
© EDP Sciences 1997
J. Phys. IV France 07 (1997) C5-573-C5-578
DOI: 10.1051/jp4:1997591
Transformation History Dependence of Shape Memory Effects
P. Sittner1, V. Novák1, M. Takakura2 and M. Tokuda21 Institute of Physics, Academy of Sciences of the Czech Republic, Na Slovance 2, Prague 8, 18040 Czech Republic
2 Faculty of Engineering, Mie University Kamihama-cho 1515, Tsu, Mie 514, Japan
Abstract
Calorimetric and thermomechanical experiments with single crystals and polycrystals of CuAlZnMn shape memory alloy show how the reverse martensitic transformation - shape memory effect - is affected by the forward transformation history, in particular by the: i) transformation path from austenite to martensite, ii) deformation in martensite, iii) annealing in martensite under stress. It is suggested that a shape memory alloy is able to partially keep information about the forward transformation history encoded in the complex rnartensite variant microstructure. Effects of the transformation history appear, particularly, if the reverse martensitic transformation proceeds under bias external stress.
© EDP Sciences 1997