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

查看全文 作　　者：Ting [1,2]Xiong;Wenfan [1,2]Yang;Shijian [1,3]Zheng;Zhaorui [4,5]Liu;Yiping [6]Lu;Ruifeng [4,5]Zhang;Yangtao [1]Zhou;Xiaohong [1]Shao;Bo [1]Zhang;Jun [7]Wang;Fuxing [3]Yin;Peter [8]K.Liaw;Xiuliang [1,9]Ma

机构地区：[1]Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences,72 Wenhua Road,Shenyang 110016,China;[2]School of Material Science and Engineering.University of Science and Technology of China,Hefei 230026,China;[3]Tianjin Key Laboratory of Materials Lamninating Fabrication and Interface Control Technology,School of Materials Science and Engineering,Hebei University of Technology,Tianjin 300130,China;[4]School of Materials Science and Engineering,Beihang University,Beijing 100191,China;[5]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 University,Beijing 100191,China;[6]Key Laboratory of Solidification Control and Digital Preparation Technology(Liaoning Province),School of Materials Science and Engineering,Dalian University of Technology,Dalian 116024,China;[7]State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xi'an 710072.China;[8]Department of Materials Science and Engineering,The University of Tennessee,Knoxville,TN,37996,USA;[9]School of Material Science and Engineering,Lanzhou University of Technology,Lanzhou 730050,China

出　　处：《Journal of Materials Science & Technology》索引2021年第6期,共12页

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。 摘　　要：Recently,the eutectic high-entropy alloy(EHEA),AlCoCrFeNi_(2.1),can reach a good balance of strength and ductility.The dual-phase alloy exhibits a eutectic lamellar microstructure with large numbers of interfaces.However,the role of the interfaces in plastic deformation have not been revealed deeply.In 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 morphologies.There 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 dislocations.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)theory.In 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 factor.Moreover,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. 关键词：High-entropy alloy AICoCrFeNi_(2.1) Interface Kurdjumov-Sachs(KS) DISLOCATION

相关文献

参考文献（57）
引证文献（8）
耦合文献（0）

参考文献(57)

引证文献(8)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

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

参考文献(57)

引证文献(8)

用户提示