Effect of grain size on the behavior of hydrogen/helium retention in tungsten: a cluster dynamics modeling

doi:10.1088/1741-4326/aa7640

CORC > 合肥物质科学研究院 > 中国科学院合肥物质科学研究院 > 中科院固体物理研究所

	Effect of grain size on the behavior of hydrogen/helium retention in tungsten: a cluster dynamics modeling
	Zhao, Zhe 1,2; Li, Yonggang 1,3; Zhang, Chuanguo 1; Pan, Guyue 1,3; Tang, Panfei 1,3; Zeng, Zhi 1,3
刊名	NUCLEAR FUSION
	2017-08-01
卷号	57 期号:8 页码:1-11
关键词	Cluster Dynamics Model H/he Retention Grain Size Grain Boundaries Dislocations
DOI	10.1088/1741-4326/aa7640
文献子类	Article
英文摘要	Reducing ion retention in materials is a key factor in the management of tritium inventory, the selection of compatible plasma-facing materials (PFMs), and thus the future development of fusion reactors. In this work, by introducing the cellular sink strength of grain boundaries (GBs) into the cluster dynamics model, the behavior of hydrogen (H) and helium (He) retention in W with different grain sizes is studied under various irradiation conditions systematically. It is found that the H/He retention increases dramatically with decreasing grain size at typical service temperatures, due to the enhancement of H/He capture ratio by GBs. Generally, He retention exists in three forms: He in GBs, in dislocations and in clusters (HemVn, He-n and HenI). Our further study shows that, under the irradiation of low energy and low fluence ions, the contribution of He in clusters is negligible. The total He retention is thus dominated by the competing absorption of GBs and dislocations, that is, changing from the dislocation-based to grain boundary-based retention with decreasing grain size. H retention also presents the same behavior. In view of these grain size-related behaviors of H/He retention in W, it is suggested that coarse-grained crystals should be selected for W-based PFMs in practice.
WOS关键词	PLASMA-FACING MATERIALS ; DEUTERIUM RETENTION ; NANOCRYSTALLINE TUNGSTEN ; SINK STRENGTHS ; POINT-DEFECTS ; IRRADIATED TUNGSTEN ; HELIUM IRRADIATION ; RADIATION-DAMAGE ; VOID NUCLEATION ; BOUNDARIES
WOS研究方向	Physics
语种	英语
WOS记录号	WOS:000404619900001
资助机构	National Science Foundation of China(11534012 ; National Science Foundation of China(11534012 ; National Science Foundation of China(11534012 ; National Science Foundation of China(11534012 ; Youth Innovation Promotion Association of CAS(2016386) ; Youth Innovation Promotion Association of CAS(2016386) ; Youth Innovation Promotion Association of CAS(2016386) ; Youth Innovation Promotion Association of CAS(2016386) ; Director Grants of CASHIPS ; Director Grants of CASHIPS ; Director Grants of CASHIPS ; Director Grants of CASHIPS ; Tianhe-2JK computing time award at the Beijing Computational Science Research Center (CSRC) ; Tianhe-2JK computing time award at the Beijing Computational Science Research Center (CSRC) ; Tianhe-2JK computing time award at the Beijing Computational Science Research Center (CSRC) ; Tianhe-2JK computing time award at the Beijing Computational Science Research Center (CSRC) ; 11475215 ; 11475215 ; 11475215 ; 11475215 ; 11605231) ; 11605231) ; 11605231) ; 11605231) ; National Science Foundation of China(11534012 ; National Science Foundation of China(11534012 ; National Science Foundation of China(11534012 ; National Science Foundation of China(11534012 ; Youth Innovation Promotion Association of CAS(2016386) ; Youth Innovation Promotion Association of CAS(2016386) ; Youth Innovation Promotion Association of CAS(2016386) ; Youth Innovation Promotion Association of CAS(2016386) ; Director Grants of CASHIPS ; Director Grants of CASHIPS ; Director Grants of CASHIPS ; Director Grants of CASHIPS ; Tianhe-2JK computing time award at the Beijing Computational Science Research Center (CSRC) ; Tianhe-2JK computing time award at the Beijing Computational Science Research Center (CSRC) ; Tianhe-2JK computing time award at the Beijing Computational Science Research Center (CSRC) ; Tianhe-2JK computing time award at the Beijing Computational Science Research Center (CSRC) ; 11475215 ; 11475215 ; 11475215 ; 11475215 ; 11605231) ; 11605231) ; 11605231) ; 11605231)
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/31989]
专题	合肥物质科学研究院_中科院固体物理研究所
作者单位	1.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China 2.Anhui Univ, Sch Phys & Mat Sci, Hefei 230601, Peoples R China 3.Univ Sci & Technol China, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Zhe,Li, Yonggang,Zhang, Chuanguo,et al. Effect of grain size on the behavior of hydrogen/helium retention in tungsten: a cluster dynamics modeling[J]. NUCLEAR FUSION,2017,57(8):1-11.
APA	Zhao, Zhe,Li, Yonggang,Zhang, Chuanguo,Pan, Guyue,Tang, Panfei,&Zeng, Zhi.(2017).Effect of grain size on the behavior of hydrogen/helium retention in tungsten: a cluster dynamics modeling.NUCLEAR FUSION,57(8),1-11.
MLA	Zhao, Zhe,et al."Effect of grain size on the behavior of hydrogen/helium retention in tungsten: a cluster dynamics modeling".NUCLEAR FUSION 57.8(2017):1-11.