Microstructure, martensitic transformation and shape memory effect of polycrystalline Cu-Al-Mn-Fe alloys

被引：11
|
作者：
Yang ShuiYuan [1 ,2 ]
Hong Shen [2 ]
Li MingPei [2 ]
Qing XinYu [2 ]
Guo LiPeng [2 ]
Guo YiHui [2 ]
Wang CuiPing [2 ]
Liu XingJun [2 ,3 ]
机构：
[1] Xiamen Univ, Shenzhen Res Inst, Coll Mat, Xiamen 361005, Peoples R China
[2] Xiamen Univ, Fujian Key Lab Mat Genome, Xiamen 361005, Peoples R China
[3] Harbin Inst Technol Shenzhen, State Key Lab Adv Welding & Joining, Shenzhen 518055, Peoples R China
来源：
SCIENCE CHINA-TECHNOLOGICAL SCIENCES | 2021年 / 64卷 / 02期
基金：
中国国家自然科学基金;
关键词：
shape memory alloy; microstructure; nanoparticles; transmission electron microscopy; martensitic transformation; shape memory effect; GRAIN-SIZE; PHASE-EQUILIBRIA; BEHAVIOR; SUPERELASTICITY; STABILIZATION; TEXTURE; MODEL; TI;
D O I：
10.1007/s11431-020-1617-x
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this study, two Cu-Al-Mn-Fe polycrystalline alloys were prepared, and their microstructure, reversible martensitic transformation, mechanical properties and shape memory effects were investigated. The results show that the reversible martensitic transformation temperatures of the studied alloys are between room temperature and 373 K, which are suitable for practical applications. Two typed martensites of 18R and 2H coexist both in two alloys. The bcc beta (FeAl) nanoparticles are Fe-rich, Mn-rich and Cu-poor, whereas the martensite is Cu-rich, Fe-poor and Mn-poor. The size of nanoparticles ranges from tens to hundreds of nanometers. Full shape recovery property is displayed in Cu-12.9Al-4.5Mn-2.6Fe alloy all the time while applying different deformation from 5% to 8%. The maximum recoverable strain is up to 4.4% with a recovery rate of 100%.
引用
收藏
页码：400 / 406
页数：7
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