2127 粉末冶金プロセスにより作製したTi-Ni系形状記憶合金の熱・力学特性(G03-4 材料特性,G03 材料力学)

概要

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Ti-Ni and Ti-Ni-Cu shape memory alloys were fabricated by powder metallurgy (P/M) process. Elemental Ti, Ni and Cu powders were mixed using planetary ball mill. These powders were sintered using pulse-current sintering equipment. The transformation temperatures of these alloys were higher than those of the wrought materials of the same compositions. The hysteresis of the transformation temperature of the Ti-50.2at%Ni and Ti-45.2at%Ni-5at%Cu alloys were approximately 36K and 16K, respectively. The hysteresis of both alloys were as narrow as that of the wrought materials. It was found from recovery strain test that the P/M Ti-Ni and Ti-Ni-Cu shape memory alloys has sufficient shape recovery property.
社団法人日本機械学会の論文
2007-09-07