TiNi基形状记忆合金的温度记忆效应研究进展  

Recent research development of temperature memory effect in TiNi based shape memory alloy

作　　者：何向明[1] 李明升[1] 多树旺[1] 向军淮[1] 张荣发[1] 

机构地区：[1]江西科技师范学院江西省材料表面工程重点实验室,江西南昌330013

出　　处：《功能材料》2007年第A08期3210-3214,共5页Journal of Functional Materials

摘　　要：TiNi形状记忆合金经过一次不完全相变循环后将对随后的相变过程产生很大的影响，因此近年来由不完全相变诱发的特殊的温度记忆效应（TemperatureMemory Effect，TME）现象引起人们的关注：如果从马氏体到母相的逆相变在第一次加热过程中在温度瓦处被中断，而后冷却到马氏体相变终了温度以下，在随后的加热过程会出现被一个动力学中断点Ts分开的两阶段逆相变，Ts可“记住”Ti综述了近年来TiNi基形状记忆合佥的TME研究新进展，阐述了具有不同马氏体相变特征的TiNi基记忆合金中TME的特点及其机理。If the reverse transformation of a shape memory alloy is arrested at a temperature between As and Af, a kinetic stop will appear in the next complete transformation. The kinetic stop temperature has a close relation with the previous arrest temperature, a two-stage reverse transformation separated by a kinetic stop Ts will appear in the second heating process, Ts can ＂memorize＂ Ti. This phenomenon is called temperature memory effect （TME）. The research on TME existing in TiNi based SMA in recent years and the characteristic and mechanism of TME are reviewed in this paper.

关 键 词：温度记忆效应 形状记忆合金 不完全相变 

分 类 号：TG111.8[金属学及工艺—物理冶金]