| Effect of void morphology on void facilitated plasticity in irradiated Cu/Nb metallic nanolayered composites | |
| Yan, Zhe1; Liu, Zhaorui2,3; Kong, Xiangfei4,5; Yao, Bonan2,3; An, Qi1; Jiang, Shuimiao1; Zhang, Ruifeng2,3; Beyerlein, Irene J.6; Zheng, Shijian1,7 | |
| Corresponding Author | Zhang, Ruifeng(zrf@buaa.edu.cn) ; Zheng, Shijian(sjzheng@hebut.edu.cn) |
| 2022 | |
| Source Publication | JOURNAL OF NUCLEAR MATERIALS
 |
| ISSN | 0022-3115 |
| Volume | 558Pages:9 |
| Abstract | 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. |
| Keyword | Metallic nanolayered composite Void Dislocation Plasticity Interface |
| Funding Organization | 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 |
| DOI | 10.1016/j.jnucmat.2021.153380 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 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 Research Area | Materials Science ; Nuclear Science & Technology |
| WOS Subject | Materials Science, Multidisciplinary ; Nuclear Science & Technology |
| WOS ID | WOS:000721530400005 |
| Publisher | ELSEVIER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/167454 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Zhang, Ruifeng; Zheng, Shijian |
| Affiliation | 1.Hebei Univ Technol, Sch Mat Sci & Engn, Tianjin Key Lab Mat Laminating Fabricat & Interfa, Tianjin 300130, Peoples R China 2.Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China 3.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 4.GRIMAT Engn Inst Co Ltd, Beijing 101407, Peoples R China 5.Gen Res Inst Nonferrous Met, Beijing 100088, Peoples R China 6.Univ Calif Santa Barbara, Dept Mech Engn & Mat, Santa Barbara, CA 93106 USA 7.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China |
| Recommended Citation 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. |
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