Numéro
J. Phys. IV France
Volume 05, Numéro C8, Décembre 1995
International Conference on Martensitic Transformations – ICOMAT 95
Page(s) C8-527 - C8-530
DOI https://doi.org/10.1051/jp4:1995881
International Conference on Martensitic Transformations
ICOMAT 95

J. Phys. IV France 05 (1995) C8-527-C8-530

DOI: 10.1051/jp4:1995881

The Effect of Thermomechanical Training on the Microstructures of Fe-Mn-Si Shape Memory Alloy

D.F. Wang1, Y.R. Chen2, F.Y. Gong2, D.Z. Liu1 and W.X. Liu1

1  Analysis Centre, Tianjin University, Tianjin 300072, P.R. China
2  Department of Materials Science and Engineering, Tianjin University, Tianjin 300072, P.R. China


Abstract
The shape memory effect and the microstructures of Fe-30Mn-6Si(wt%) alloy subjected to different training treatments have been studied in present paper. It has been found that the recovery strain increases significantly through the training treatment of 4% tensile pre-strain followed by recovery annealing at 700°C (treatment A) while the recovery strain decreases after the training treatment of 4% tensile pre-strain plus recovery annealing at 300 °C (treatment B). The microstructures of the alloy after the above training treatments were investigated by TEM. It was found that the treatment A favoured the formation of oriented dislocations and stacking faults which results in the improvement of shape memory effect in Fe-Mn-Si alloy.



© EDP Sciences 1995