Superior strength-ductility combination resulted from hetero-zone boundary affected region in Cu-Fe layered material

作     者：Hao Ran Peihao Ye Fengjiao Guo Mingsai Wang Wuli Su Xue Chen Si Gao Nobuhiro Tsuji Yuntian Zhu Xiaochong Lu Chongxiang Huang Hao Ran;Peihao Ye;Fengjiao Guo;Mingsai Wang;Wuli Su;Xue Chen;Si Gao;Nobuhiro Tsuji;Yuntian Zhu;Xiaochong Lu;Chongxiang Huang

作者机构：School of Aeronautics and AstronauticsSichuan UniversityChengdu 610065China Department of Materials Science and EngineeringKyoto UniversityYoshida HonmachiSakyo-kuKyoto 606-8501Japan Elements Strategy Initiative for Structural Materials(ESISM)Kyoto UniversityYoshida HonmachiSakyo-kuKyoto 606-8501Japan Department of Materials Science and EngineeringCity University of Hong KongHong KongChina Failure Mechanics and Engineering Disaster Prevention and Mitigation Key Laboratory of Sichuan ProvinceSichuan UniversityChengdu 610065China 

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

年 卷 期：2024年第181卷第14期

页      面：209-219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 by the National Natural Science Foundation of China(Nos.51931003,92263201) the Fundamental Research Funds for the Central Universities(No.2022SCU12094) the Project funded by China Postdoctoral Science Foundation(No.2022M722253) supported by the Elements Strategy Initiative for Structural Materials(ESISM,No.JPMXP0112101000) the Grant-in-Aid for Scientific Research(A)(No.JP23H00234)through the Ministry of Education,Culture,Sports,Science and Technology(MEXT),Japan 

主　　题：Hetero-zone boundary affected region Layered material Strain partitioning Geometrically necessary dislocation Hetero-deformation 

摘      要：The hetero-zone boundary affected region(HBAR)significantly influences the mechanical behaviors of layered materials,where the deformation mechanisms differ from those in the bulk *** this study,three kinds of heterogeneous Cu-Fe layered materials with different interface spacing but identical total thicknesses were *** effects of HBAR and strain partitioning on the tensile behavior of the lay-ered materials were *** results showed that layered materials had enhanced yield strength and uniform elongation with decreasing interface *** tensile deformation,geometrically nec-essary dislocations(GNDs)were generated at hetero-zone boundaries and piled up near them,resulting in hetero-deformation induced(HDI)strengthening and HDI work *** profilometry mea-surements showed that the Cu and Fe layers exhibited obvious strain partitioning and mutual *** decreasing interface spacing,strain partitioning is enhanced by interlayer constraint,which pre-vented strain localization at interfaces and thus improved the synergetic deformation of layers.A higher fraction of HBAR can improve the mechanical performance of heterogeneous layered *** study deepens our understanding of the relationship between HBAR and strength-ductility synergy and provides some insight into the design of layered materials.