Abstract
The shape recovery of Fe-28Mn-6Si-5Cr alloy was investigated without and with three kinds of the heat treatments: annealing at 600℃ for 1 min, water quenching from at 600℃ for 1 min and tempering at 600℃ for 1 min after quenching. All of the specimens with the heat treatments had better shape recovery than without the treatments. The austenite phase that contributes the stress-induced martensitic transformation increased in the annealed alloy and then its shape recovery could be improved. On the other hand the austenite phase less increased in the quenched and the quench-tempered alloys and the mechanism of recovery improved was the constraint of moving dislocation and then twining deformation had occurred at the deformation during the bending test because the crystal grains had been fined due to quenching.
