THERMOMECHANICAL TREATMENT METHOD FOR FE-MN-SI-BASED SHAPE MEMORY ALLOY WITH NB, C ADDITION

摘要

Means for thermo-mechanical-treatment of an Fe-Mn-Si shape-memory alloy of specified composition doped with NbC comprises performing a mechanical treatment prior to aging treatment at a mechanical treatment ratio falling within a specified range so that the mechanical treatment can be carried out at room temperature, in place of the old method of performing training as a mechanical treatment prior to aging treatment and in place of the prior method of performing a mechanical treatment at 500 to 800°C prior to aging treatment.