Effect of Component Proportion on Mechanical Behaviors of Laminated Nanotwinned Cu

doi:10.11900/0412.1961.2022.00554

IMR OpenIR

	Effect of Component Proportion on Mechanical Behaviors of Laminated Nanotwinned Cu
	Wan, Tao 1,2; Cheng Zhao 1; Lu Lei 1
通讯作者	Lu Lei(llu@imr.ac.cn)
	2023-04-11
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	59 期号:4 页码:567-576
摘要	Laminated metals have the potential for achieving better mechanical properties, such as higher strength, ductility, and work hardening ability. The mechanism that leads to these advances stems from the inhomogeneous plastic deformations between soft and hard components where geometrically necessary dislocations (GNDs) are produced while the two adjacent components are mutually constrained. Many structural factors have already been extensively investigated during the optimization of the laminated structure, such as the effect of layer thickness and the strength differential between components on the overall resulting properties. However, the effect of component composition percentage, an important factor for laminated structures, on the mechanical properties and its underlying mechanism remains elusive. To unravel the effect of component composition percentage on the mechanical properties, we used stable nanotwinned structures as components to build laminated nanotwinned (LNT) Cu materials. Three LNT Cu samples with hard components on the surface layers and soft components in the core layer were designed and prepared by direct-current electrodeposition. The soft component percentages were set as 10%, 50%, and 90%. The mechanical behaviors of LNT Cu were explored by uniaxial tensile tests at room temperature. Yield strengths for all three LNT Cu were higher than that estimated by the rule of mixture, indicating an extra strengthening effect from the LNT structure. The LNT Cu containing 50% soft component (LNT-50%) demonstrated the greatest extra strengthening. Interestingly, full-field strain measurements and microstructure characterizations further indicated that the strain localization of LNT-50% was well suppressed and the lateral strain difference between the soft and hard components was obviously reduced. This indicated that the strong mutual constraint between the two components contributed to the greatest extra strengthening.
关键词	laminated nanotwinned Cu component percentage extra strengthening strain localization gradient plastic deformation
资助者	National Natural Science Foundation of China ; Key Research Program of Frontier Science and International Partnership Program, Chinese Academy of Sciences ; China Postdoctoral Science Foundation ; Innovation Fund of Institute of Metal Research, Chinese Academy of Sciences
DOI	10.11900/0412.1961.2022.00554
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51931010] ; National Natural Science Foundation of China[92163202] ; National Natural Science Foundation of China[52001312] ; Key Research Program of Frontier Science and International Partnership Program, Chinese Academy of Sciences[GJHZ2029] ; China Postdoctoral Science Foundation[2019M661150] ; China Postdoctoral Science Foundation[BX20190336] ; Innovation Fund of Institute of Metal Research, Chinese Academy of Sciences[2021PY02]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000980757300013
出版者	SCIENCE PRESS
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/177645
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, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Wan, Tao,Cheng Zhao,Lu Lei. Effect of Component Proportion on Mechanical Behaviors of Laminated Nanotwinned Cu[J]. ACTA METALLURGICA SINICA,2023,59(4):567-576.
APA	Wan, Tao,Cheng Zhao,&Lu Lei.(2023).Effect of Component Proportion on Mechanical Behaviors of Laminated Nanotwinned Cu.ACTA METALLURGICA SINICA,59(4),567-576.
MLA	Wan, Tao,et al."Effect of Component Proportion on Mechanical Behaviors of Laminated Nanotwinned Cu".ACTA METALLURGICA SINICA 59.4(2023):567-576.