Improvement of shape memory characteristics by precipitation-hardening of Ti-Pd-Ni alloys

被引：79
|
作者：
Shimizu, S [1 ]
Xu, Y
Okunishi, E
Tanaka, S
Otsuka, K
Mitose, K
机构：
[1] Univ Tsukuba, Inst Mat Sci, Tsukuba, Ibaraki 305, Japan
[2] Furukawa Elect Corp Ltd, Yokohama R&D Lab, Nishi Ku, Yokohama, Kanagawa 220, Japan
来源：
MATERIALS LETTERS | 1998年 / 34卷 / 1-2期
关键词：
shape memory effect; high temperature shape memory alloy; ageing; precipitation; Ti-Pd-Ni;
D O I：
10.1016/S0167-577X(97)00134-1
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
An attempt to improve the shape memory characteristics by precipitation-hardening was made for non-equiatomic Ti-Pd-Ni high temperature shape memory alloys (Ti:(Ni, Pd) not equal 50:50) by differential scanning calorimetry, high temperature tensile tests and transmission electron microscopy. It was found that homogeneously distributed fine precipitates can be produced by ageing treatment at the proper temperature of 773 K for Ti50.6Pd30Ni19.4 alloys, These precipitates increase the critical stress for slip and improve the shape memory characteristics substantially at high temperatures. (C) 1998 Elsevier Science B.V.
引用
收藏
页码：23 / 29
页数：7
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