Faceted Kurdjumov-Sachs interface-induced slip continuity in the eutectic high-entropy alloy,AlCoCrFeNi_(2.1)

作     者：Ting Xiong Wenfan Yang Shijian Zheng Zhaorui Liu Yiping Lu Ruifeng Zhang Yangtao Zhou Xiaohong Shao Bo Zhang Jun Wang Fuxing Yin Peter K.Liaw Xiuliang Ma Ting Xiong;Wenfan Yang;Shijian Zheng;Zhaorui Liu;Yiping Lu;Ruifeng Zhang;Yangtao Zhou;Xiaohong Shao;Bo Zhang;Jun Wang;Fuxing Yin;Peter K.Liaw;Xiuliang Ma

作者机构：Shenyang National Laboratory for Materials ScienceInstitute of Metal ResearchChinese Academy of Sciences72 Wenhua RoadShenyang 110016China School of Material Science and Engineering.University of Science and Technology of ChinaHefei 230026China Tianjin Key Laboratory of Materials Lamninating Fabrication and Interface Control TechnologySchool of Materials Science and EngineeringHebei University of TechnologyTianjin 300130China School of Materials Science and EngineeringBeihang UniversityBeijing 100191China Center for Integrated Computational Materials Engineering(International Research Institute for Multidisciplinary Science)and Key Laboratory of High-Temperature Structural Materials 8 Coatings Technology(Ministry of Industry and Informnation Technology)Beihang UniversityBeijing 100191China Key Laboratory of Solidification Control and Digital Preparation Technology(Liaoning Province)School of Materials Science and EngineeringDalian University of TechnologyDalian 116024China State Key Laboratory of Solidification ProcessingNorthwestern Polytechnical UniversityXi'an 710072.China Department of Materials Science and EngineeringThe University of TennesseeKnoxvilleTN37996USA School of Material Science and EngineeringLanzhou University of TechnologyLanzhou 730050China 

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

年 卷 期：2021年第65卷第6期

页      面：216-227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：supported financially by the National Natural Science Foundation of China(No.51771201 and No.51822402) the Key Project of Natural Science Foundation of Liaoning Province China(No.20180510059) the Shenyang National Laboratory for Materials Science(No.2017RP17) the State Key Laboratory of Solidification Processing in Northwestern Polytechnical University(No.SKLSP201902) support of the U.S.Army Research Office Project(W911NF-13-1-0438 and W911NF-19-2-0049)with the program managers,Drs.M.P.Bakas,S.N.Mathaudhu,D.M.Stepp support from the National Science Foundation(DMR-1611180 and DMR-1809640)with the program directors,Drs.J.Yang,G.Shiflet,D.Farkas 

主　　题：High-entropy alloy AICoCrFeNi_(2.1) Interface Kurdjumov-Sachs(KS) Dislocation 

摘      要：Recently,the eutectic high-entropy alloy(EHEA),AlCoCrFeNi_(2.1),can reach a good balance of strength and *** dual-phase alloy exhibits a eutectic lamellar microstructure with large numbers of ***,the role of the interfaces in plastic deformation have not been revealed *** the present work,the orientation relationship(OR)of the interfaces has been clarified as the Kurdjumov-Sachs(KS)interfaces presenting〈111〉_(B2) 〈110〉_(FCC)and {110} _(B2){111}_(FCC) independent of their *** exist three kinds of interfaces in the EHEA,namely,The dominating interface and the secondary interface are both non-slip planes and atomistic-scale faceted,facilitating the nucleation and slip transmission of the *** formation mechanism of the preferred interfaces is revealed using the atomistic geometrical analysis according to the criteria of the low interfacial energy based on the coincidence-site lattice(CSL)*** particular,the ductility of the dual-phase alloy originates from the KS interface-induced slip continuity across interfaces,which provides a high slip-transfer geometric ***,the strengthening effect can be attributed to the interface resistance for the dislocation transmission due to the mismatches of the moduli and lattice parameters at the interfaces.