金属学报  2004, Vol. 40 Issue (2): 130-134

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TiNi合金约束相变行为研究

刘晓鹏; 金 伟; 曹名洲; 杨 锐

中国科学院金属研究所; 沈阳 110016

Study on Constraint Transformation Behavior of Tini Alloy

LIU Xiaopeng; JIN Wei; CAO Mingzhou; YANG Rui

Institute of Metal Research; The Chinese Academy of Sciences;

刘晓鹏; 金伟; 曹名洲; 杨锐 . TiNi合金约束相变行为研究[J]. 金属学报, 2004, 40(2): 130-134 .
, , , . Study on Constraint Transformation Behavior of Tini Alloy[J]. Acta Metall Sin, 2004, 40(2): 130-134 .

摘要 参考文献 相关文章 Metrics 全文: PDF(4578 KB)   摘要: 研究了预变形TiNi合金应变约束态下的相变行为. 结果表明: 7%应变TiNi合金变形 后第1次应变约束相变产生的恢复应力最大, 逆相变开始温度As'最高. 随着约束相变循环次数的增加, 合金中引入大量塑性变形, 降低了TiNi合金的恢复 应变, 进而造成TiNi合金约束相变恢复应力最大值逐渐降低, 但约束逆相变开始温 度As'从第2次相变循环开始, 几乎恢复到合金变形前的原始值, 且不 随相变循环次数增加而改变. 关键词 ： TiNi形状记忆合金,  约束相变,  恢复应力     Abstract：The constraint transformation behavior of 7% strained TiNi alloy was investigated, and the experimental results show that the recovery stress formed at the first constraint transformation thermal cycling is the highest, and then decreases with increasing the constraint transformation thermal cycling number. It is indicated that the recovery strain of deformed TiNi alloy is decreased with increasing the constraint transformation thermal cycling number by forming the internal plastic deformation, which results in the decrease of the recovery stress. The reverse transformation start temperature As' of the deformed TiNi alloy at the first constraint transformation thermal cycling is elevated to a higher temperature, but it nearly returns to the original value of undeformed one at subsequent constraint transformation thermal cycling, and does not change with increasing the constraint transformation thermal cycling number. Key words： shape memory alloy    constraint transformation    recovery stress 收稿日期: 2003-02-24      ZTFLH:  TG111.5   服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 刘晓鹏 金伟 曹名洲 杨锐 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y2004/V40/I2/130 [1] Sittner P, Vokoun D, Dayananda G N, Stalmans R. Mater Sci Eng, 2000; A286: 298 [2] Cai W. Zhang C S, Zhao L C. J Mater Sci Technol, 1994: 10: 27 [3] Liu Y. Xie Z. van Humbeeck J. Delaey L. Acta Mater, 1998: 46: 4325 [4] Liu Y N. Liu Y, van Humbeeck J. Acta Mater, 1999; 47: 199 [5] Piao M, Otsuka K. Miyazaki S, Horikawa H. Mater Trans JIM. 1993; 34: 919 [6] Liu X P. Jin W, Cao M Z, Yang D Z, Chen F X. Acta Metall Sin. 2002; 38: 193(刘晓鹏,金伟,曹名洲,杨大智,陈騑騢.金属学报,2002;38:193) [1] 胡强; 金伟; 刘晓鹏; 曹名洲; 李守新 . 低应力/应变幅控制的对称拉压疲劳对Ti-49.6Ni合金相变行为的影响[J]. 金属学报, 2001, 37(3): 263-266 . [2] 赵兴中;吴杏芳;柯俊. TiNi形状记忆合金中的亚稳相[J]. 金属学报, 1994, 30(7): 302-306. Viewed Full text Abstract Cited   Shared      Discussed