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J. Phys. IV France
Volume 05, Numéro C2, Février 1995
IIIrd European Symposium on Martensitic Transformations
Page(s) C2-471 - C2-476
IIIrd European Symposium on Martensitic Transformations

J. Phys. IV France 05 (1995) C2-471-C2-476

DOI: 10.1051/jp4:1995272

Experimental Studies, Modelling and Simulation of the Hysteresis in SMA Single Crystals : The σ, ε, T and t Coordinate Space

A. Isalgue1, F.C. Lovey2, J.L. Pelegrina2, C. Rogueda1 and V. Torra1

1  DFA, ETSECCPB/ETSAB, UPC, Campus Nord B-4, E-08034 Barcelona, Spain
2  Centro Atómico Bariloche, 8400 S.C. de Bariloche, Argentina

The behaviour of global and partial loops (stress-strain-temparature) in SMA single crystals was investigated. Marquardt's based numeric algorithms were developed for the identification of relevant physical parameters (time independent). In addition, the time-dependent effects like static and dynamic recoverable creep, β-recovery, quenching and or up-quenching effects, were evaluated. The constructed model permits the computer simulation of the global and partial hysteresis cycles in the four dimensional σ,ε T and t coordinate space. The simulated curves are in excellent agreement with the experimental results.

© EDP Sciences 1995