材料科学技术(英文版)2024，Vol.181Issue(14) ：209-219.DOI:10.1016/j.jmst.2023.09.027

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

Hao Ran Peihao Ye Fengjiao Guo Mingsai Wang Wuli Su Xue Chen Si Gao Nobuhiro Tsuji Yuntian Zhu Xiaochong Lu Chongxiang Huang
材料科学技术(英文版)2024，Vol.181Issue(14) ：209-219.DOI:10.1016/j.jmst.2023.09.027
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Superior strength-ductility combination resulted from hetero-zone boundary affected region in Cu-Fe layered material

Hao Ran 1Peihao Ye 1Fengjiao Guo 1Mingsai Wang 1Wuli Su 1Xue Chen 1Si Gao 2Nobuhiro Tsuji 3Yuntian Zhu 4Xiaochong Lu 1Chongxiang Huang5
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作者信息

  • 1. School of Aeronautics and Astronautics,Sichuan University,Chengdu 610065,China
  • 2. Department of Materials Science and Engineering Kyoto University,Yoshida Honmachi,Sakyo-ku,Kyoto 606-8501,Japan
  • 3. Department of Materials Science and Engineering Kyoto University,Yoshida Honmachi,Sakyo-ku,Kyoto 606-8501,Japan;Elements Strategy Initiative for Structural Materials(ESISM),Kyoto University,Yoshida Honmachi,Sakyo-ku,Kyoto 606-8501,Japan
  • 4. Department of Materials Science and Engineering City University of Hong Kong Hong Kong China
  • 5. School of Aeronautics and Astronautics,Sichuan University,Chengdu 610065,China;Failure Mechanics and Engineering Disaster Prevention and Mitigation Key Laboratory of Sichuan Province,Sichuan University,Chengdu 610065,China
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Abstract

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 layers.In this study,three kinds of heterogeneous Cu-Fe layered materials with different interface spacing but identical total thicknesses were prepared.The effects of HBAR and strain partitioning on the tensile behavior of the lay-ered materials were investigated.The results showed that layered materials had enhanced yield strength and uniform elongation with decreasing interface spacing.During 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 hardening.Surface profilometry mea-surements showed that the Cu and Fe layers exhibited obvious strain partitioning and mutual constraint.With 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 materials.This study deepens our understanding of the relationship between HBAR and strength-ductility synergy and provides some insight into the design of layered materials.

Key words

Hetero-zone boundary affected region/Layered material/Strain partitioning/Geometrically necessary dislocation/Hetero-deformation

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基金项目

国家自然科学基金(51931003)

国家自然科学基金(92263201)

中央高校基本科研业务费专项(2022SCU12094)

中国博士后科学基金(2022M722253)

Elements Strategy Initiative for Structural Materials(JPMXP0112101000)

Grantin-Aid for Scientific Research(A)through the Ministry of Education,Culture,Sports,Science and Technology(MEXT),Japan(JP23H00234)

出版年

2024
材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

CSTPCDCSCD
影响因子：0.657
ISSN：1005-0302
参考文献量46
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