抄録
The main characteristics which appear in shape memory alloys (SMAs) are the shape memory effect and superelasticity. In applications of SMAs, the thermomechanical properties of SMAs are most important. Creep and stress relaxation are induced due to the phase transformation in the subloop loading under the stress-controlled conditions. In order to design the SMA elements properly, it is important to understand the thermomechanical properties. In the present paper, the conditions for the nucleation and progress of the phase transformation in SMAs subjected to the subloop loadings are investigated under the stress-controlled conditions. The transformation-induced creep and stress relaxation and the thermomechanical neutral loading condition are discussed based on the transformation kinetics of the material.
