J. Phys. IV France 112 (2003) 885
Superelasticity of a Ti 50Ni 25CU 25 shape memory alloy melt spun ribbonY. Liu and W. K. Kow
School of Mechanical and Production Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798
The mechanical property of a Ti 50Ni 25Cu 25 melt spun ribbon is studied. After annealed at 500 C for 15 minutes, the crystallized ribbon exhibits a transformation hysteresis of 8 C and a superelastic shape recovery of up to 10% strain. No flat stress-plateau is associated with this high superelasticity. During cyclic deformation with strain increment, the shape recovery strain increases and the yield stress decreases, leading to superelasticity with very low hysteresis.
© EDP Sciences 2003