LAUSR

Effect of single and simultaneous addition of Ni and Co to Ti 45 Zr 5 Pd x on the phase transformation and strain recovery of the alloys was investigated to understand multi-component effect on high-temperature shape memory alloys. The martensitic transformation from B2 to B19 structures occurred in Ti 45 Zr 5 Pd 40 Ni 10 , Ti 45 Zr 5 Pd 40 Co 10 , Ti 45 Zr 5 Pd 40 Ni 8 Co 2 , and Ti 45 Zr 5 Pd 40 Ni 2 Co 8 . In contrast, at room temperature, martensitic transformation did not occur and the B2 structure was stable in Ti 45 Zr 5 Pd 30 Ni 20 and Ti 45 Zr 5 Pd 40 Ni 5 Co 5 . This is due to the effect of Ni for Ti 45 Zr 5 Pd 30 Ni 20 and the effect of multi-component for Ti 45 Zr 5 Pd 40 Ni 5 Co 5 . The shape memory effect was investigated using a thermal cyclic test. The perfect shape recovery was obtained after the repeated thermal cyclic test, indicating the potential of TiZrPd (Ni, Co) alloys as shape memory alloys.