Molecular dynamics simulations of high-energy radiation damage in W and W-Re alloys
文献类型:期刊论文
作者 | Fu, Jun4; Deng, Huiqiu4; Hu, Wangyu4; Jiang, Chao4; Chen, Yangchun4; Fang, Jingzhong4; Gao, Ning1,5; Zhou, Hong-Bo3; Lu, Guang-Hong3; Gao, Fei2 |
刊名 | JOURNAL OF NUCLEAR MATERIALS |
出版日期 | 2019-10-01 |
卷号 | 524页码:9-20 |
ISSN号 | 0022-3115 |
关键词 | W-Re alloy Molecular dynamics High-energy collision cascades Defects |
DOI | 10.1016/j.jnucmat.2019.06.027 |
通讯作者 | Gao, Ning(ning.gao@impcas.ac.cn) ; Deng, Huiqiu(hqdeng@hnu.edu.cn) |
英文摘要 | High-energy collision cascades with an energy of up to 300 keV for the primary knock-on atom (PIGS) have been initially simulated in W and W-Re alloys containing 5 or 10 at.% Re atoms using the molecular dynamics method with recently fitted W-Re interatomic potentials. The effects of PIGS energy and Re concentration on defect production, defect clustering and states of dislocation loops have been quantitatively analysed. The results show that the presence of Re atoms does not significantly affect either the number of surviving defects or their clustered fractions. In addition, the interstitial dislocation loops are dominated by the 112<111> loops. Mixed interstitial loops with 112<111> and <100> Burgers vectors and interstitial loops that have the same Burgers vectors but are located on different habit planes have also been observed. Further analysis indicates that the pinning effect induced by the Re atom segregation leads to the lower mobility of the interstitial clusters and interstitial 112<111> loops in W-Re alloys than in pure W, which is expected to influence the subsequent evolution of radiation-induced defects in W-Re alloy. (C) 2019 Elsevier B.V. All rights reserved. |
WOS关键词 | NEUTRON-IRRADIATION ; DISPLACEMENT CASCADES ; INTERATOMIC POTENTIALS ; FE-CR ; MICROSTRUCTURAL DEVELOPMENT ; TRANSMUTATION ELEMENTS ; TUNGSTEN ; RHENIUM ; FRAGMENTATION ; DEFECTS |
资助项目 | National MCF Energy R&D Program of China[2018YFE0308100] ; National Natural Science Foundation of China[51771073] ; National Natural Science Foundation of China[11675230] ; National Natural Science Foundation of China[11475232] |
WOS研究方向 | Materials Science ; Nuclear Science & Technology |
语种 | 英语 |
出版者 | ELSEVIER |
WOS记录号 | WOS:000478693700002 |
资助机构 | National MCF Energy R&D Program of China ; National Natural Science Foundation of China |
源URL | [http://119.78.100.186/handle/113462/133021] |
专题 | 中国科学院近代物理研究所 |
通讯作者 | Deng, Huiqiu; Gao, Ning |
作者单位 | 1.Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 100094, Peoples R China 2.Univ Michigan, Dept Nucl Engn & Radiol Sci, Ann Arbor, MI 48109 USA 3.Beihang Univ, Dept Phys, Beijing 100191, Peoples R China 4.Hunan Univ, Coll Mat Sci & Engn, Coll Mech & Vehicle Engn, Sch Phys & Elect, Changsha 410082, Hunan, Peoples R China 5.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China |
推荐引用方式 GB/T 7714 | Fu, Jun,Deng, Huiqiu,Hu, Wangyu,et al. Molecular dynamics simulations of high-energy radiation damage in W and W-Re alloys[J]. JOURNAL OF NUCLEAR MATERIALS,2019,524:9-20. |
APA | Fu, Jun.,Deng, Huiqiu.,Hu, Wangyu.,Jiang, Chao.,Chen, Yangchun.,...&Gao, Fei.(2019).Molecular dynamics simulations of high-energy radiation damage in W and W-Re alloys.JOURNAL OF NUCLEAR MATERIALS,524,9-20. |
MLA | Fu, Jun,et al."Molecular dynamics simulations of high-energy radiation damage in W and W-Re alloys".JOURNAL OF NUCLEAR MATERIALS 524(2019):9-20. |
入库方式: OAI收割
来源:近代物理研究所
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