2915 パルス通電加圧焼結によるTi-Ni合金の熱・力学特性に及ぼす組成の影響(S34-2 粉末成形とその評価(2),S34 粉末成形とその評価)

抄録

This paper presents the influence of the compositions of sintered Ti-Ni alloys on their thermo-mechanical properties. The Ti-Ni alloys having various compositions from 50at%Ni to 51 at%Ni were sintered using elemental Ti and Ni powders by a pulse-current pressure sintering equipment. The deformation resistance in stress-strain curves increased with increasing Ni content. In the case of Ti-50at%Ni, tensile strength and elongation were more than 500MPa and 7%, respectively. The increase in Ni content also makes the transformation temperatures lower. The deformation resistance at a test temperature from 293K and 353K in isothermal tensile test increased with elevating test temperature.