Toward an understanding of post-necking behavior in ultrafine-scale Cu/Ni laminated composites

IMR OpenIR

	Toward an understanding of post-necking behavior in ultrafine-scale Cu/Ni laminated composites
	Tan, HF; Zhang, B; Zhang, GP; Zhang, B (reprint author), Northeastern Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Anisotropy & Texture Mat, 3-11 Wenhua Rd, Shenyang 110819, Liaoning, Peoples R China.
	2018-02-14
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	716 页码:72-77
摘要	Cu/Ni laminated composites with the same total thickness of 128 gm, but different modulation wavelength lambda (the sum of monolayer thickness of constituent layers) of 32 gm and 3 pm, respectively were prepared using a dual-bath electrodeposition technique. The tensile testing results and the quantitative characterization of strain gradient in the post-necking region of the composites reveal that the lambda = 3 mu m composites have the higher tensile strength and the better strain hardening ability, as well as the stronger resistance to post-necking compared with the lambda = 32 mu m ones. A high density of layer interfaces in the ultrathin laminated composite may play a key role in delaying the development of unstable plastic deformation along the layer thickness direction through periodical strain gradient and a number of geometrically necessary dislocations near the interfaces. Thus, the fatal localized plastic deformation along the through thickness direction has to be spread over along the loading direction, leading to the large neck breadth in the ultrathin laminated composites.; Cu/Ni laminated composites with the same total thickness of 128 gm, but different modulation wavelength lambda (the sum of monolayer thickness of constituent layers) of 32 gm and 3 pm, respectively were prepared using a dual-bath electrodeposition technique. The tensile testing results and the quantitative characterization of strain gradient in the post-necking region of the composites reveal that the lambda = 3 mu m composites have the higher tensile strength and the better strain hardening ability, as well as the stronger resistance to post-necking compared with the lambda = 32 mu m ones. A high density of layer interfaces in the ultrathin laminated composite may play a key role in delaying the development of unstable plastic deformation along the layer thickness direction through periodical strain gradient and a number of geometrically necessary dislocations near the interfaces. Thus, the fatal localized plastic deformation along the through thickness direction has to be spread over along the loading direction, leading to the large neck breadth in the ultrathin laminated composites.
部门归属	[tan, h. f. ; zhang, b.] northeastern univ, sch mat sci & engn, minist educ, key lab anisotropy & texture mat, 3-11 wenhua rd, shenyang 110819, liaoning, peoples r china ; [zhang, g. p.] chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, liaoning, peoples r china
关键词	Mechanical-properties Hardening Behavior Sheet Metals Tensile Test Multilayers Plasticity Deformation Fracture Work Identification
学科领域	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
资助者	National Natural Science Foundation of China (NSFC) [51371047, 51671050]; NSFC [51371180]
收录类别	SCI
语种	英语
WOS记录号	WOS:000426234800009
引用统计	被引频次：7[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/321006/79502
专题	中国科学院金属研究所
通讯作者	Zhang, B (reprint author), Northeastern Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Anisotropy & Texture Mat, 3-11 Wenhua Rd, Shenyang 110819, Liaoning, Peoples R China.
推荐引用方式 GB/T 7714	Tan, HF,Zhang, B,Zhang, GP,et al. Toward an understanding of post-necking behavior in ultrafine-scale Cu/Ni laminated composites[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2018,716:72-77.
APA	Tan, HF,Zhang, B,Zhang, GP,&Zhang, B .(2018).Toward an understanding of post-necking behavior in ultrafine-scale Cu/Ni laminated composites.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,716,72-77.
MLA	Tan, HF,et al."Toward an understanding of post-necking behavior in ultrafine-scale Cu/Ni laminated composites".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 716(2018):72-77.