双向记忆合金的室温回复现象  

Restoration Phenomenon at Room Temperature in Two-Way Memory Alloys

作　　者：曾欲晓[1] 谭树松[1] 

机构地区：[1]中南工业大学材料科学与工程系

出　　处：《功能材料》1994年第3期215-218,共4页Journal of Functional Materials

摘　　要：本文研究了双向训练对双向记忆恢复率η＿ｔ的影响及双向记忆合金室温放置时的性能稳定性。结果表明，训练过程产生的缺陷对母相与马氏体（Ｍ）相形状恢复率有截然不同的影响，使得η＿ｔ随训练次数的增加，先增大，后又有所下降。合金经训练或热循环后在室温放置时，会产生性能的部分回复，使η＿ｔ升高后又下降，这可能与应力松弛有关。This paper investigated the influenceof two-way training on two-way memory recoveryratio(MRR)σ_t and property stability of trained al-lovs when laid at room temperature(RT).Itshows:Defects formed during training have a quitedifferent influence on parent phas e MRR andmartensitic phase MRR. As a result,η_t rises,thendescends with increasing number of training cycles.The property of the alloy which has undergonetraining or thermal cycling will restore partly whenlaid at RT:η_t rises, then descends,This may havea relation with stress relaxation.

关 键 词：CUZNAL合金 双向记忆 应力 形状记忆合金 回复 

分 类 号：TG139.6[一般工业技术—材料科学与工程]