Effect of void morphology on void facilitated plasticity in irradiated Cu/Nb metallic nanolayered composites

doi:10.1016/j.jnucmat.2021.153380

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	Effect of void morphology on void facilitated plasticity in irradiated Cu/Nb metallic nanolayered composites
	Yan, Zhe 2; Liu, Zhaorui 3,4; Kong, Xiangfei 5,6; Yao, Bonan 3,4; An, Qi 2; Jiang, Shuimiao 2; Zhang, Ruifeng 3,4; Beyerlein, Irene J.7; Zheng, Shijian 1,2
刊名	JOURNAL OF NUCLEAR MATERIALS
	2022
卷号	558 页码:9
关键词	Metallic nanolayered composite Void Dislocation Plasticity Interface
ISSN号	0022-3115
DOI	10.1016/j.jnucmat.2021.153380
通讯作者	Zhang, Ruifeng(zrf@buaa.edu.cn) ; Zheng, Shijian(sjzheng@hebut.edu.cn)
英文摘要	Voids are common radiation-induced defects in nuclear materials and produce detrimental effects on me-chanical properties. The influence of a pre-existing void on mechanical behavior has been investigated in single crystals, but the effects of void located at bimetal interfaces on the dislocation nucleation mecha-nisms and associated mechanical performance have not been fully studied. Using Cu/Nb metallic nanolay-ered composites (MNCs) as a model system, with atomic-scale simulations, we report on the influence of a pre-existing void at the Cu/Nb interface on dislocation nucleation and deformation behavior. Compared with the void-free system, the size, location and shape of the voids can influence dislocation behavior sig-nificantly, such as the initial nucleation site, the critical nucleation stress, and the preferred slip system. As the size of the faceted void increases from 3 to 4 nm, the dominant mechanism of dislocation nucle-ation changes from a misfit dislocation-assisted localized shear to a void edge-assisted Frank-Read-like mechanism. Also, the location of the faceted void can change the coupled strain field between the void and the misfit dislocation, ultimately affecting the preferred slip system selection. In contrast, the spher-ical void cannot effectively activate the Frank-Read-like dislocation source due to the absence of edges. This work reveals the effects of void morphology on dislocation behavior, and provides an explanation for co-dominated plasticity of bimetal interface and void. (c) 2021 Elsevier B.V. All rights reserved.
资助项目	National Natural Science Foundation of China[51771201] ; National Natural Science Foundation of China[52071124] ; key project of Natural Science Foundation of Hebei[E2021202135] ; key project of Natural Science Foundation of Tianjin[20JCZDJC00440] ; Open Research Fund from the State Key Laboratory of Rolling and Automation, Northeastern University[2020RALKFKT002]
WOS研究方向	Materials Science ; Nuclear Science & Technology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000721530400005
资助机构	National Natural Science Foundation of China ; key project of Natural Science Foundation of Hebei ; key project of Natural Science Foundation of Tianjin ; Open Research Fund from the State Key Laboratory of Rolling and Automation, Northeastern University
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/167453]
专题	金属研究所_中国科学院金属研究所
通讯作者	Zhang, Ruifeng; Zheng, Shijian
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Hebei Univ Technol, Sch Mat Sci & Engn, Tianjin Key Lab Mat Laminating Fabricat & Interfa, Tianjin 300130, Peoples R China 3.Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China 4.Beihang Univ, Ctr Integrated Computat Mat Engn, Int Res Inst Multidisciplinary Sci, Key Lab High Temp Struct Mat & Coatings Technol,M, Beijing 100191, Peoples R China 5.GRIMAT Engn Inst Co Ltd, Beijing 101407, Peoples R China 6.Gen Res Inst Nonferrous Met, Beijing 100088, Peoples R China 7.Univ Calif Santa Barbara, Dept Mech Engn & Mat, Santa Barbara, CA 93106 USA
推荐引用方式 GB/T 7714	Yan, Zhe,Liu, Zhaorui,Kong, Xiangfei,et al. Effect of void morphology on void facilitated plasticity in irradiated Cu/Nb metallic nanolayered composites[J]. JOURNAL OF NUCLEAR MATERIALS,2022,558:9.
APA	Yan, Zhe.,Liu, Zhaorui.,Kong, Xiangfei.,Yao, Bonan.,An, Qi.,...&Zheng, Shijian.(2022).Effect of void morphology on void facilitated plasticity in irradiated Cu/Nb metallic nanolayered composites.JOURNAL OF NUCLEAR MATERIALS,558,9.
MLA	Yan, Zhe,et al."Effect of void morphology on void facilitated plasticity in irradiated Cu/Nb metallic nanolayered composites".JOURNAL OF NUCLEAR MATERIALS 558(2022):9.