Transformation temperatures and second phases in Ti-Ni-Si ternary shape memory alloys with Si≤2 at.%

被引：10
作者：
Hsieh, SF
Wu, SK [1 ]
Lin, HC
机构：
[1] Natl Taiwan Univ, Dept Mat Sci & Engn, Taipei 106, Taiwan
[2] Natl Kaohsiung Univ Appl Sci, Dept Mold & Die Engn, Kaohsiung 807, Taiwan
[3] Feng Chia Univ, Dept Mat Sci, Taichung 407, Taiwan
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2002年 / 339卷 / 1-2期
关键词：
transition metal compounds; metallography; thermal analysis; phase transition;
D O I：
10.1016/S0925-8388(01)01974-0
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：
Effects of Si on transformation temperatures and second phases in Ti50-xNi50Sx, Ti50Ni50-xSix and Ti51Ni49-xSix shape memory alloys (SMAs) with x=1, 2 at.% are investigated. Three different second-phase particles located at grain boundaries are observed. They are X-phase particles (Ti5Ni4Si1), lambda(1)-phase particles (Ti2Ni3Si1) and Ti-2(Ni, Si) particles. In addition to the formation of second phases. a small amount of Si remained in solid solution in the matrix of Ti-Ni-Si ternary SMAs. Experimental results show that, in the matrix, the effects of Ni+Si in combination on transformation temperatures of Ti-Ni-Si ternary SMAs are similar to Ni effects on those of as-quenched TiNi binary SMAs. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：162 / 166
页数：5
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