中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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
DOI10.1016/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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