Superelastic shape-memory ni-ti base alloy and manufacture thereof

Abstract

Abstract PURPOSE:To increase elasticity and shape-memory performance by the solution treatment and aging of the alloy composed of specified rate of Ni, Ti, V, Cr, Mn, Fe, Co, etc. at a specified temperature. CONSTITUTION:An alloy composed of 50-52atom% Ni and remainder Ti or an alloy of which not more than 1atom% Ni or Ti content is substituted with not less than one kind of V, Cr, Mn, Fe, Co, Cu, Zr, Nb, Mo, Ta and noble metals, is refined. After this alloy is solution-treated at a temperature of 700-1,100 deg.C, it is aged at a temperature of 300-600 deg.C. Thus, fine Ni3Ti phase is dispersed and precipitated in base phase and the alloy material excellent in superelasticity and shape-memory property can be obtained.

Inventors

• 👤 Kazuhiro Otsuka
• 👤 和弘 大塚
• 👤 Shuichi Miyazaki
• 👤 修一 宮崎
• 👤 Yutaka Omi
• 👤 近江　豊
• 👤 Yuichi Suzuki
• 👤 雄一 鈴木

Bibliographic Details