Off-stoichiometry-guided design of high-strength chemically complex intermetallic-based alloys with outstanding ductility

作     者：Bo Xiao Jixun Zhang Shaofei Liu Yilu Zhao Lianyong Xu C.T.Liu Tao Yang Bo Xiao;Jixun Zhang;Shaofei Liu;Yilu Zhao;Lianyong Xu;C.T.Liu;Tao Yang

作者机构：Department of Materials Science and EngineeringMechanical Behavior Division of Shenyang National Laboratory for Materials ScienceCity University of Hong KongHong KongChina Center for Advanced Nuclear Safety and Sustainable DevelopmentCity University of Hong KongHong KongChina Hong Kong Institute for Advanced StudyCity University of Hong KongHong KongChina School of Materials Science and EngineeringHarbin Institute of Technology(Shenzhen)Shenzhen 518055China School of Materials Science and EngineeringTianjin UniversityTianjin 300350China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2023年第160卷第29期

页      面：28-33页

核心收录：

学科分类：0806[工学-冶金工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：the City University of Hong Kong ac-knowledge the financial support from the National Natural Sci-ence Foundation of China(Grant Nos.52101151 and52222112) the Hong Kong Research Grant Council(RGC)(Grant Nos.CityU 21205621,11214820,11209021,and C1017-21 G) the Guang-dong Basic and Applied Basic Research Foundation(Grant No.2020A1515110647) Y.L.Z.is grateful for financial support from the National Natural Science Foundation of China(No.52101135) the Shenzhen Science and Technology Program(Grant No.RCBS20210609103202012) 

主　　题：intermetallic ductility alloys 

摘      要：*** The lasting drive for improved energy efficiency in power gen-eration encourages the innovative design of advanced structural materials with superb mechanical properties[1-6].Among these materials,ordered intermetallic alloys[7-9],as a unique class of metallic materials,have drawn increasing concern from both the scientific and industrial communities due to their intriguing high-temperature properties,strong chemical binding,and low atomic mobility[10,11].However,in light of the insufficient number of slip systems and/or intrinsically weak grain boundary(GB),they are usually brittle at ambient temperature,severely hindering their practical use in engineering systems[12].Previous studies reported that the change in alloy stoichiometry has a significant beneficial effect on the ductility of intermetallic *** instance,Liu et al.