Martensitic transformation behavior and shape memory properties of Ti-Ni-Pt melt-spun ribbons

被引：6

作者：

Inamura, Tomonari ^{[1
]}

Takahashi, Yohei

Hosoda, Hideki

Wakashima, Kenji

Nagase, Takeshi

Nakano, Takayoshi

Umakoshi, Yukichi

Miyazaki, Shuichi

机构：

[1] Tokyo Inst Technol, Precis & Intelligence Lab, Yokohama, Kanagawa 2268503, Japan

[2] Osaka Univ, Grad Sch Engn, Dept Mat Sci & Engn, Suita, Osaka 5650871, Japan

[3] Univ Tsukuba, Inst Mat Sci, Tsukuba, Ibaraki 3058573, Japan

来源：

MATERIALS TRANSACTIONS | 2006年 / 47卷 / 03期

关键词：

high temperature shape memory alloy; rapid solidification;

D O I：

10.2320/matertrans.47.540

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Martensitic transformation behavior and shape memory properties of a Ti50Ni40Pt10 (TiNiPt) melt-spun ribbon fabricated by a single roll melt-spinning technique were characterized. The constituent phases of the as-spun ribbon were B2 (parent phase) and B 19 (martensite phase) at room temperature. The B2-B19 martensitic transformation temperatures of the as-spun ribbon were 100 K higher than those of the bulk-material with the same chemical composition. The martensitic transformation temperatures of the as-spun ribbon were decreased with increasing the temperature of the heat-treatment made after the melt-spinning. The as-spun ribbon and the heat-treated ribbons exhibited shape recovery by heating and/or pseudoelasticity. The martensitic transformation temperatures determined from the temperature dependence of the 0.2% flow stress of the pseudoelastic deformation were in good agreement with those of B2-B19 martensitic transformation determined by DSC. It was confirmed that the observed shape recovery and pseudoelasticity are shape memory effect and superelasticity due to the B2-B19 martensitic transformation. Shape memory effect and superelasticity of melt-spun TiNiPt alloy were found to appear at higher temperatures compared to those of Bulk-material with the same composition.

引用

页码：540 / 545

页数：6

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