抄録
In this study, the mechanical properties of shape memory alloys, Ni_<2.1>Mn_<0.9>Ga and Ti51at%Ni were investigated. Ni_<2.1>Mn_<0.9>Ga was a ferromagnetic shape memory alloy which indicated magnetic field-induced shape memory effect, and Ti51at%Ni was known as a typical shape memory alloy. The temperature dependence of the sound velocities were measured using an ultrasonic pulse echo measurement. Experimental results show that the velocities decreased at the temperature of the transformation.
