Interface strain gradient enabled high strength and hardening in laminated nanotwinned Cu

doi:10.1016/j.actamat.2023.119138

IMR OpenIR

	Interface strain gradient enabled high strength and hardening in laminated nanotwinned Cu
	Cheng, Zhao 1; Wan, Tao 1,2; Lu, Lei 1
通讯作者	Lu, Lei(llu@imr.ac.cn)
	2023-09-01
发表期刊	ACTA MATERIALIA
ISSN	1359-6454
卷号	256 页码:10
摘要	Interfaces play a crucial role in mechanical behaviors of laminated materials. In this study, a series of hard/soft nanotwinned Cu laminates with varying interface spacing from 200 to 33 & mu;m are prepared by means of direct current electrodeposition. Simultaneous improvement of strength and work hardening with decreasing interface spacing is found in tensile tests. Extra strengthening and geometrically necessary dislocations (GNDs), but without any strain concentration, are found in the vicinity of interfaces. An obvious strain discrepancy appears across the interface and decreases with decreasing interface spacing. Most importantly, a highest plastic strain gradient appearing in the vicinity of interfaces, regardless of interface spacing, indicates a significant deformation compatibility across the interfaces. The spatially-distributed strengthening mediated by interface contributes for increasing strength and decreasing strain discrepancy by decreasing the interface spacing.
关键词	Laminated nanotwin Cu Extra strengthening Interface strain gradient Geometrically necessary dislocation Interface spacing
资助者	National Natural Science Foundation of China (NSFC) ; Key Research Program of Frontier Science and International partnership program ; Youth Innovation Promotion Association, Chinese Academy of Sciences (CAS)
DOI	10.1016/j.actamat.2023.119138
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China (NSFC)[51931010] ; National Natural Science Foundation of China (NSFC)[92163202] ; Key Research Program of Frontier Science and International partnership program[GJHZ2029] ; Youth Innovation Promotion Association, Chinese Academy of Sciences (CAS) ; [52001312]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001039831400001
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：22[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/178775
专题	中国科学院金属研究所
通讯作者	Lu, Lei
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang, Peoples R China
推荐引用方式 GB/T 7714	Cheng, Zhao,Wan, Tao,Lu, Lei. Interface strain gradient enabled high strength and hardening in laminated nanotwinned Cu[J]. ACTA MATERIALIA,2023,256:10.
APA	Cheng, Zhao,Wan, Tao,&Lu, Lei.(2023).Interface strain gradient enabled high strength and hardening in laminated nanotwinned Cu.ACTA MATERIALIA,256,10.
MLA	Cheng, Zhao,et al."Interface strain gradient enabled high strength and hardening in laminated nanotwinned Cu".ACTA MATERIALIA 256(2023):10.