Ti-Ni-Cu SHAPE MEMORY ALLOY

摘要

PROBLEM TO BE SOLVED: To provide shape memory alloy having excellent shape memory characteristics, extended permissible composition range and high practicality. SOLUTION: The Ti-Ni-Cu shape memory alloy has a composition consisting of, by atom, 51-55% Ti, 35-45% Ni and 4-10% Cu. This alloy has shape memory characteristics of 3-5% shape recovery strain at 1-1.5 GPa maximum load stress and superelasticity of about 3% recovery strain at 800 MPa maximum load stress.