106 Effect of Cold Working Ratio on Cyclic Behavior of Ti-Ni-Cu Shape Memory Alloy under Thermomechanical Cycles

Abstract

Shape memory alloy is drawn attention as the functional material from various fields, and some products have been already made practicable. However, its applications are still few because its functions are not enoush for practical use. So it is necessary to improve these functions and grasp the most suitable conditions for shape memory alloy. In this paper, thermomechanical cyclic tests for Ti-Ni-Cu shape memory alloy which have different cold working ratio(10-40%) are conducted. And the effect of the cold working ratio on the transformation temperatures and the thermomechanical cyclic behavior are discussed.