Superelasticity of Cu–Ni–Al shape-memory fibers prepared by melt extraction technique

作     者：Dong-yue Li Shu-ling Zhang Wei-bing Liao Gui-hong Geng Yong Zhang 

作者机构：State Key Laboratory for Advanced Metals and Materials University of Science and Technology Beijing School of Mechanical Engineering Ningxia University School of Advanced Materials Peking University Shenzhen Graduate School School of Materials Science and Engineering Beifang University of Nationalities 

出 版 物：《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报（英文版）)

年 卷 期：2016年第23卷第8期

页      面：928-933页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：financial support of the National High Technology Research and Development Program of China (No. 2009AA03Z113) the National Science Foundation of China (No. 51471025) 

主　　题：copper nickel aluminum alloys shape memory effect melt extraction method superelasticity 

摘      要：In the paper, a melt extraction method was used to fabricate Cu–4Ni–14Al（wt%） fiber materials with diameters between 50 and 200 μm. The fibers exhibited superelasticity and temperature-induced martensitic transformation. The microstructures and superelasticity behavior of the fibers were studied via scanning electron microscopy（SEM） and a dynamic mechanical analyzer（DMA）, respectively. Appropriate heat treatment further improves the plasticity of Cu-based alloys. The serration behavior observed during the loading process is due to the multiple martensite phase transformation.