Surface effect on < 100 > interstitial dislocation loop in iron

doi:10.7498/aps.69.20191379

	Surface effect on < 100 > interstitial dislocation loop in iron
	Liang Jin-Jie 2,3; Gao Ning 1,2; Li Yu-Hong 3
刊名	ACTA PHYSICA SINICA
	2020-02-05
卷号	69 期号:3 页码:8
关键词	radiation damage dislocation loop molecular dynamics simulation surface effect
ISSN号	1000-3290
DOI	10.7498/aps.69.20191379
通讯作者	Li Yu-Hong(liyuhong@lzu.edu.cn)
英文摘要	Formation and evolution of interstitial dislocation loop induced by radiation damage in a material are confirmed to seriously affect the performance of the material under irradiation. For example, in body-centered cubic Fe based alloy, 1/2 < 111 > and < 100 > are mainly formed during the irradiation, which is related to various degradations of material properties. Thus, the understanding of their effect on radiation damages of material is always one of the hottest topics in nuclear material society. Previous studies have shown the surface effect on 1/2 < 111 > loop through the investigation of the interaction between 1/2 < 111 > loop and {111} surface. Considering the difference in property between 1/2 < 111 > loop and < 111 > loop, in this work the interaction between a < 111 > and {100} surface is studied in detail through the molecular dynamics method. The simulation results indicate that the factors including Burgers vector of loop, loop-to-surface depth, interaction between pre-existing < 111 >, and temperature, all seriously affect the interaction between < 111 > and surface. Especially, the present results show for the first time the evolution of Burgers vector of < 111 > from < 111 > to 1/2 and its one-dimensional diffusion to surface. According to these results, we also further explore the surface evolution after its interaction with loop. The appearance of atomic island results in the rugged surface morphology. All these results provide a new insight into the radiation damage to the surface of material.
资助项目	National MCF Energy R&D Program of China[2018YFE0308101] ; National Natural Science Foundation of China[11675230] ; National Natural Science Foundation of China[11775102] ; Youth Innovation Promotion Association, Chinese Academy Sciences
WOS关键词	HEAVY-ION IRRADIATIONS ; THIN-FOILS ; DAMAGE EVOLUTION ; MOBILITY ; FE ; TEMPERATURE ; CLUSTERS
WOS研究方向	Physics
语种	英语
出版者	CHINESE PHYSICAL SOC
WOS记录号	WOS:000527799000026
资助机构	National MCF Energy R&D Program of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association, Chinese Academy Sciences
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/140495]
专题	中国科学院近代物理研究所
通讯作者	Li Yu-Hong
作者单位	1.Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 3.Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Liang Jin-Jie,Gao Ning,Li Yu-Hong. Surface effect on < 100 > interstitial dislocation loop in iron[J]. ACTA PHYSICA SINICA,2020,69(3):8.
APA	Liang Jin-Jie,Gao Ning,&Li Yu-Hong.(2020).Surface effect on < 100 > interstitial dislocation loop in iron.ACTA PHYSICA SINICA,69(3),8.
MLA	Liang Jin-Jie,et al."Surface effect on < 100 > interstitial dislocation loop in iron".ACTA PHYSICA SINICA 69.3(2020):8.