The influences of migration behaviors on annihilation of point defects trapped into grain boundaries in Tungsten

doi:10.1080/00223131.2020.1817809

	The influences of migration behaviors on annihilation of point defects trapped into grain boundaries in Tungsten
	He, Wenhao 1; Zhou, Liangfu 1; Gao, Xing 3; Wang, Dong 2; Shen, Tielong 3; Wang, Zhiguang 3; Yang, Dongyan 1; Li, Yuhong 1; Liu, Juntao 1; Liu, Zhiyi 1
刊名	JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY
	2020-09-14
页码	8
关键词	Tungsten molecular dynamics grain boundary defect annihilation
ISSN号	0022-3131
DOI	10.1080/00223131.2020.1817809
通讯作者	Li, Yuhong(liyuhong@impcas.ac.cn) ; Liu, Zhiyi(zhiyil@lzu.edu.cn)
英文摘要	The nano-crystalline materials generally show better irradiation resistance than common poly-crystalline materials since grain boundaries (GBs) can usually enhance the annihilation of irradiation-induced defects. Although the defect annihilation mechanism has been thoroughly investigated in GBs in tungsten, the influences of defect migration behavior in GB-planes on the recombination capability between them are still not well understood. In view of this, several GBs with typical divergences of point defect migration behavior are selected to conduct this study. And then the evolutions of Frenkel pairs continuously introduced into these GB-planes are simulated with the molecular dynamic methods at 1200 K. Combined the point defect migration behaviors in GB-planes, it is found out that the GB satisfying the following two conditions may have more excellent recombination ability of point defects trapped into it. Firstly, the vacancy (V) and self-interstitial atom (SIA) migration abilities are similar in the GB-plane. Secondly, the V or SIA migration abilities along two orthogonal directions in the GB-plane are similar.
资助项目	National Natural Science Foundation of China[11775102] ; National Natural Science Foundation of China[11805088]
WOS关键词	SIMULATION ; RESISTANCE ; HE
WOS研究方向	Nuclear Science & Technology
语种	英语
出版者	TAYLOR & FRANCIS LTD
WOS记录号	WOS:000569857900001
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/139607]
专题	中国科学院近代物理研究所
通讯作者	Li, Yuhong; Liu, Zhiyi
作者单位	1.Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou, Peoples R China 2.Nucl Power Inst China, Sci & Technol Reactor Fuel & Mat Lab, Chengdu, Peoples R China 3.Chinese Acad Sci, Inst Modern Phys, Lanzhou, Peoples R China
推荐引用方式 GB/T 7714	He, Wenhao,Zhou, Liangfu,Gao, Xing,et al. The influences of migration behaviors on annihilation of point defects trapped into grain boundaries in Tungsten[J]. JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY,2020:8.
APA	He, Wenhao.,Zhou, Liangfu.,Gao, Xing.,Wang, Dong.,Shen, Tielong.,...&Liu, Zhiyi.(2020).The influences of migration behaviors on annihilation of point defects trapped into grain boundaries in Tungsten.JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY,8.
MLA	He, Wenhao,et al."The influences of migration behaviors on annihilation of point defects trapped into grain boundaries in Tungsten".JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY (2020):8.