Study of R-phase transformation in a Ti-50.7at%Ni alloy by in-situ transmission electron microscopy observations

被引：23

作者：

Cai, W

Murakami, Y

Otsuka, K ^{[1
]}

机构：

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

[2] Tohoku Univ, Inst Adv Mat Proc, Katahira, Sendai 98077, Japan

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1999年 / 273卷

关键词：

martensite; R-phase; Ni-Ti; incommensurability;

D O I：

10.1016/S0921-5093(99)00367-6

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The R-phase transformation in a Ti-50.7at%Ni alloy was investigated by in-situ transmission electron microscopy (TEM) observations using double-tilt cooling stages, and the incommensurability of 1/3 diffuse scattering in the process of the transformation was examined by using imaging plates. It is shown that the incommensurate diffuse scattering exists in the parent phase within a wide temperature range above the Rs temperature and that the incommensurability decreases with decreasing temperature. The R-phase transformation starts at the Rs temperature where the electrical resistance starts to increase and the R-phase is commensurate even in the state just after formation. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

页码：186 / 189

页数：4

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