具有完全形状记忆效应的Cu−13.5Al−4Ni−6Fe形状记忆马氏体单晶  

Full shape memory effect of Cu−13.5Al−4Ni−6Fe shape memory martensite single crystal

作　　者：郭利鹏 张锦平 陈晓强 郑师威 杨水源[1,2] 王书亮 阮晶晶[4] 王翠萍 Li-peng GUO;Jin-ping ZHANG;Xiao-qiang CHEN;Shi-wei ZHENG;Shui-yuan YANG;Shu-liang WANG;Jing-jing RUAN;Cui-ping WANG(Fujian Key Laboratory of Materials Genome,College of Materials,Xiamen University,Xiamen 361005,China;Shenzhen Research Institute of Xiamen University,Shenzhen 518000,China;School of New Energy and Materials,Southwest Petroleum University,Chengdu 610500,China;Institute for Advanced Studies in Precision Materials,Yantai University,Yantai 264005,China)

机构地区：[1]厦门大学材料学院,福建省材料基因重点实验室,厦门361005 [2]厦门大学深圳研究院,深圳518000 [3]西南石油大学新能源与材料学院,成都610500 [4]烟台大学精准材料高等研究院,烟台264005

出　　处：《Transactions of Nonferrous Metals Society of China》2023年第5期1452-1459,共8页中国有色金属学报（英文版）

基　　金：the Shenzhen Science and Technology Project,China(No.JCYJ20190809162401686);the Guangdong Basic and Applied Basic Research Foundation,China(No.2020A1515010069).

摘　　要：通过对铸态合金进行简单退火处理,制备具有完全形状记忆效应的厘米级Cu−13.5Al−4Ni−6Fe马氏体单晶。通过光学显微镜、透射电子显微镜、差示扫描量热仪、热机械分析仪以及压缩测试研究单晶的显微组织、逆马氏体转变和形状记忆效应。研究结果表明,Cu−13.5Al−4Ni−6Fe单晶拥有18R和2H 2种马氏体,同时拥有体心立方富Fe纳米析出相。马氏体转变和逆转变的起始温度和结束温度分别为387、397、365和432 K。当对单晶施加6%、7%以及8%的预应变时,单晶分别拥有4.4%、4.7%以及5.2%的完全形状记忆效应。获得的Cu−13.5Al−4Ni−6Fe马氏体单晶具有可与传统形状记忆合金相媲美的形状记忆性能。The Cu−13.5Al−4Ni−6Fe centimeter-leveled martensite single crystals with full shape memory effect were prepared through simply annealing the cast alloy.The microstructure,reversible martensitic transformation,shape memory effect of this single crystal were investigated using optical microscopy,transmission electron microscope,differential scanning calorimeter,thermal mechanical analysis and compression test.The results show that Cu−13.5Al−4Ni−6Fe single crystal consists of 18R and 2H martensite,as well as rich-Fe bcc nanoprecipitate.The starting temperatures and the finishing temperatures of the forward and reverse martensitic transformations are 387,397,365 and 432 K,respectively.When the pre-strain is 6%,7%,and 8%,this single crystal exhibits full shape memory effect of 4.4%,4.7%and 5.2%,respectively.The obtained Cu−13.5Al−4Ni−6Fe martensite single crystal possesses shape memory properties that can be comparable to those of traditional shape memory alloys.

关 键 词：Cu−Al−Ni 马氏体单晶 完全形状记忆效应 马氏体转变 纳米析出相 

分 类 号：TG139.6[一般工业技术—材料科学与工程]