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Exceptional tensile properties induced by interlayer-compatible deformation in a gradient ultra-nanograined Cu

文献类型：期刊论文

作者Feng HQ(冯航旗)1,3,4; Kang QY(康庆宇)2,4; Zhou LL(周玲玲)4; He ZH(何政鸿)2,4; Du, Jinliang1; Yang MX(杨沐鑫)2,4; Li, Weijie3; Li, Ying3; Yuan FP(袁福平)2,4; Wu XL(武晓雷)2,4
刊名JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
出版日期2026-03-20
卷号248页码:176-188
关键词Gradient nanostructures Deformation compatibility Mechanically-driven grain coarsening Hetero-deformation induced hardening Strength-ductility synergy
ISSN号1005-0302
DOI10.1016/j.jmst.2025.04.084
通讯作者Yang, Muxin(mxyang@lnm.imech.ac.cn) ; Li, Ying(bitliying@bit.edu.cn)
英文摘要In this study, a gradient ultra-nanograined (GUNG) Cu was prepared by surface rolling and shearing processing at liquid nitrogen temperature. Microstructural analysis reveals a significant presence of ultrananograins (similar to 5-20 nm) within the topmost surface layer (SL), transitioning to coarser grains beneath, culminating in a gradient structure over 600 mu m deep. The GUNG Cu exhibits an exceptional strength-ductility synergy, achieving yield strengths of 250-330 MPa and uniform elongations of 17 %-30 %. The deformation mechanisms of GUNG Cu are elucidated through in-situ electron backscatter diffraction and microscopic digital image correlation, highlighting the interlayer-compatible deformation of GUNG Cu under tensile loading. It is noteworthy that the topmost ultra-nanograined SL (within depths of 0-2 mu m) in GUNG Cu maintains high mechanical stability with minimal change in grain size during tensile plastic deformation, whereas the subsurface layer (at a depth of similar to 15 mu m) displays a deformation-driven grain coarsening behavior, facilitating deformation compatibility across individual layers. The enhanced strength-ductility synergy exhibited in GUNG Cu can be attributed to the interplay between interlayer compatible deformation and hetero-deformation induced (HDI) hardening, in which softer and harder layers interact with each other, thus promoting the strain hardening throughout the GUNG structure. The present findings provide a more profound understanding of deformation compatibility and HDI hardening mechanisms in gradient structures, demonstrating how tailored microstructural heterogeneity can potentially circumvent the traditional strength-ductility trade-off in nanostructured materials.
(c) 2025 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
分类号一类
WOS关键词STRENGTH-DUCTILITY SYNERGY ; SURFACE-LAYER ; PURE CU ; SIMULTANEOUS IMPROVEMENT ; MECHANICAL-PROPERTIES ; PLASTICITY ; RESISTANCE
资助项目Strategic Priority Research Program of the Chinese Academy of Sciences[XDB0510301] ; Natural Science Foundation of China[52192593] ; Natural Science Foundation of China[52071326] ; Natural Science Foundation of China[52225108] ; Natural Science Foundation of China[52171290] ; Natural Science Foundation of China[51601204] ; NSFC Basic Science Center Program for Multiscale Problems in Nonlinear Mechanics[11988102] ; National Key R&D Program of China[2019YFA0209902] ; National Key R&D Program of China[2022YFB3806104]
WOS研究方向Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
WOS记录号WOS:001533491800007
资助机构Strategic Priority Research Program of the Chinese Academy of Sciences ; Natural Science Foundation of China ; NSFC Basic Science Center Program for Multiscale Problems in Nonlinear Mechanics ; National Key R&D Program of China
其他责任者杨沐鑫，Li, Ying
源URL[http://dspace.imech.ac.cn/handle/311007/102328]  
专题力学研究所_非线性力学国家重点实验室
作者单位1.Wuhan Univ Technol, Sch Naval Architecture Ocean & Energy Power Engn, Wuhan 430070, Peoples R China;
2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China;
3.Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China
4.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China;
推荐引用方式
GB/T 7714		 Feng HQ,Kang QY,Zhou LL,et al. Exceptional tensile properties induced by interlayer-compatible deformation in a gradient ultra-nanograined Cu[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2026,248:176-188.
APA 冯航旗.,康庆宇.,周玲玲.,何政鸿.,Du, Jinliang.,...&武晓雷.(2026).Exceptional tensile properties induced by interlayer-compatible deformation in a gradient ultra-nanograined Cu.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,248,176-188.
MLA 冯航旗,et al."Exceptional tensile properties induced by interlayer-compatible deformation in a gradient ultra-nanograined Cu".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 248(2026):176-188.

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