Interface-coupling-dependent mechanical behaviors of sandwich-structured Ni/Cu/Ni composites

doi:10.1016/j.msea.2018.11.107

IMR OpenIR

	Interface-coupling-dependent mechanical behaviors of sandwich-structured Ni/Cu/Ni composites
	Liang, Fei 1,2; Luo, Xue-Mei 1; Zhang, Guang-Ping 1
通讯作者	Zhang, Guang-Ping(gpzhang@imr.ac.cn)
	2019-01-16
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	743 页码:436-444
摘要	Maximizing the interface coupling effect is a key to improve mechanical properties of laminate/gradient structures. In this work, Ni/Cu/Ni sandwich-structured composites with the middle Cu layers cyclically deformed to different cycles were fabricated to investigate the influence of initial dislocation density on the interface-coupling-dependent mechanical behavior. Extra yield strength contributed by the interface coupling was found to decrease with decreasing the degree of mechanical incompatibility across the interface during uniaxial tensile loading. In addition, the width of geometrical necessary dislocation (GND) pile-up regions adjacent to the interfaces was observed to decrease with increasing the initial dislocation density of Cu layers, which is attributed to the change of source-obstacle configuration in the stress gradient model. These findings suggest that the GND strengthening effect caused by the interface coupling and the cyclic hardening effect in the constituent layers appears to be competitive, and the interface coupling effect is gradually weakened with increasing the initial dislocation density of Cu layers.
关键词	Laminated composites Interface Geometrically necessary dislocation Stress gradient Interface-affected zone
资助者	National Natural Science Foundation of China (NSFC) ; NSFC ; IMR SYNL-T.S. Ke Research Fellowship
DOI	10.1016/j.msea.2018.11.107
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China (NSFC)[51671050] ; National Natural Science Foundation of China (NSFC)[51571199] ; NSFC[51771207] ; IMR SYNL-T.S. Ke Research Fellowship[Y6N7611161]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000456891500049
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：27[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/321006/131761
专题	中国科学院金属研究所
通讯作者	Zhang, Guang-Ping
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Liang, Fei,Luo, Xue-Mei,Zhang, Guang-Ping. Interface-coupling-dependent mechanical behaviors of sandwich-structured Ni/Cu/Ni composites[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2019,743:436-444.
APA	Liang, Fei,Luo, Xue-Mei,&Zhang, Guang-Ping.(2019).Interface-coupling-dependent mechanical behaviors of sandwich-structured Ni/Cu/Ni composites.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,743,436-444.
MLA	Liang, Fei,et al."Interface-coupling-dependent mechanical behaviors of sandwich-structured Ni/Cu/Ni composites".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 743(2019):436-444.