Reverse Transformation Behavior of TiNi Shape Memory Alloys Prestrained in the Parent Phase

The reverse martensitic transformation of TiNi alloy wires prestrained in the parent phase was studied. Experimental results show that the reverse transformation of the TiNi alloys prestrained in the parent phase is significantly different from that of the TiNi alloys prestrained in the martensite phase. Three continual peaks appear on the DSC curves of wires with a small prestrain and one high temperature peak appears on the DSC curves of wires with a large prestrain.