Abstract
The effect of a thermomechanical pre-treatment on the shape memory property of Fe-28Mn-6Si-5Cr shape memory alloy was studied. The thermomechanical pre-treatment is the plastic deformation of a strain of 10.0% and then annealing performed at 700℃ for 15 minutes. From the results, it was found that the transformation strain of this material increases with increasing maximum stress applied on deformation, and reaches an upper limit at a certain stress. In the case of the original material without any thermomechanical pre-treatment, the upper limit of the transformation strain is about 2%. On the other hand, the transformation strain of the material with the thermomechanical pre-treatment rises to about 3%.
