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Interactions between hydrogen bubbles and prismatic interstitial dislocation loops in BCC iron

文献类型：期刊论文

作者Wei, Yaxia5,6; Gao, Ning1,3,4,5,6; Shen, Zhenyu2; Chen, Cheng5,6; Xie, Ziyang5,6; Guo, Liping5
刊名COMPUTATIONAL MATERIALS SCIENCE
出版日期2020-07-01
卷号180页码:8
关键词Pinning mechanism Hydrogen bubble Dislocation loop Molecular dynamics (MD)
ISSN号0927-0256
DOI10.1016/j.commatsci.2020.109724
通讯作者Gao, Ning(ning.gao@sdu.edu.cn) ; Guo, Liping(guolp@whu.edu.cn)
英文摘要The interaction between the interstitial dislocation loop and the hydrogen bubble has been investigated using the molecular dynamics (MD) method, to understand the behavior of dislocation loops in iron-based alloys for the future nuclear systems in which high concentration of hydrogen is created in structural materials. Based on the simulation results, the pinning effect of hydrogen bubble on prismatic interstitial dislocation loop is proposed in bcc iron. The dislocation loop can be attracted to a hydrogen bubble and locked by it when the dislocation loop is in contacts with the bubble. The dislocation loop gliding is also impeded through the elastic interaction with a hydrogen bubble, but without directly colliding with it. When the attractive interaction between a hydrogen bubble and an interstitial dislocation loop is strong enough, the hydrogen bubble can capture the dislocation loop directly and they annihilate with each other. The switching of these interaction mechanisms depends on sizes of the dislocation loop and the hydrogen bubble, the anglen and the distance between the loop and the bubble, and the surface density of hydrogen atoms in the bubble. All these results provide new insight on hydrogen effect in irradiated iron-based materials.
WOS关键词ATOM CLUSTERS ; HELIUM ; ENERGY ; METALS ; MOBILITY ; VACANCY
资助项目National Natural Science Foundation of China[11675230] ; National Natural Science Foundation of China[11775162] ; National Natural Science Foundation of China[11975170]
WOS研究方向Materials Science
语种英语
WOS记录号WOS:000539337000010
出版者ELSEVIER
资助机构National Natural Science Foundation of China
源URL[http://119.78.100.186/handle/113462/140393]  
专题中国科学院近代物理研究所
通讯作者Gao, Ning; Guo, Liping
作者单位1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 73000, Peoples R China
2.China Ship Dev & Design Ctr, Wuhan 430072, Hubei, Peoples R China
3.ShanDong Univ, Key Lab Particle Phys & Particle Irradiat MOE, Qingdao 266237, Peoples R China
4.ShanDong Univ, Inst Frontier & Interdisciplinary Sci, Qingdao 266237, Peoples R China
5.Wuhan Univ, Sch Phys & Technol, Wuhan 430072, Hubei, Peoples R China
6.Wuhan Univ, Key Lab Artificial Micro & Nanostruct, Hubei Nucl Solid Phys Key Lab, Minist Educ, Wuhan 430072, Hubei, Peoples R China
推荐引用方式
GB/T 7714		 Wei, Yaxia,Gao, Ning,Shen, Zhenyu,et al. Interactions between hydrogen bubbles and prismatic interstitial dislocation loops in BCC iron[J]. COMPUTATIONAL MATERIALS SCIENCE,2020,180:8.
APA Wei, Yaxia,Gao, Ning,Shen, Zhenyu,Chen, Cheng,Xie, Ziyang,&Guo, Liping.(2020).Interactions between hydrogen bubbles and prismatic interstitial dislocation loops in BCC iron.COMPUTATIONAL MATERIALS SCIENCE,180,8.
MLA Wei, Yaxia,et al."Interactions between hydrogen bubbles and prismatic interstitial dislocation loops in BCC iron".COMPUTATIONAL MATERIALS SCIENCE 180(2020):8.

入库方式： OAI收割

来源：近代物理研究所

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