Effect of Dy addition on the microstructure and martensitic transformation of a Ni-rich TiNi shape memory alloy

被引：29
|
作者：
Liu, A. L. [1 ]
Gao, Z. Y. [1 ]
Gao, L. [1 ]
Cai, W. [1 ]
Wu, Y. [1 ]
机构：
[1] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2007年 / 437卷 / 1-2期
基金：
中国国家自然科学基金;
关键词：
TiNi shape memory alloys; rare earth Dy; microstructure; martensitic transformation; DyNi phase;
D O I：
10.1016/j.jallcom.2006.08.006
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The effect of rare earth element Dy addition on the microstructure and martensitic transformation behavior of Ti49.3Ni50.7 shape memory alloy was investigated by optical microscope (OM), scanning electronic microscope (SEM), X-ray diffraction (XRD) and differential scanning calorimetry (DSC). The results show that the microstructure of TiNiDy ternary alloy consists of Ti2Ni phase, DyNi phase and the matrix. One-step martensitic transformation is observed in quenched TiNiDy ternary alloys, which is the same as that in quenched TiNi binary alloys. The martensitic transformation temperatures increase evidently with Dy addition, and he maximum increase of M-s is about 110 degrees C. (C) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：339 / 343
页数：5
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