Temperature memory effect of Ni47Ti44Nb9 wide hysteresis shape memory alloy

The temperature memory effect (TME) phenomenon of Ni47Ti44Nb9 wide hysteresis shape memory alloy was studied. It was found that TME occurred during the reverse transformation for the thermally-induced martensite (TIM) but not for the stress-induced martensite after incomplete transformation cycling. The reverse transformation temperature interval of TIM can be doubly broadened after 10 incomplete transformation cycles.