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

doi:10.1088/1741-4326/aa7640

HFCAS OpenIR > 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, Yonggang1,3 ; Zhang, Chuanguo1 ; Pan, Guyue 1,3; Tang, Panfei 1,3; Zeng, Zhi 1,3
	2017-08-01
发表期刊	NUCLEAR FUSION
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.
文章类型	Article
关键词	Cluster Dynamics Model H/he Retention Grain Size Grain Boundaries Dislocations
WOS标题词	Science & Technology ; Physical Sciences
DOI	10.1088/1741-4326/aa7640
关键词[WOS]	PLASMA-FACING MATERIALS ; DEUTERIUM RETENTION ; NANOCRYSTALLINE TUNGSTEN ; SINK STRENGTHS ; POINT-DEFECTS ; IRRADIATED TUNGSTEN ; HELIUM IRRADIATION ; RADIATION-DAMAGE ; VOID NUCLEATION ; BOUNDARIES
收录类别	SCI
语种	英语
项目资助者	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)
WOS研究方向	Physics
WOS类目	Physics, Fluids & Plasmas
WOS记录号	WOS:000404619900001
引用统计	被引频次：28[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/31989
专题	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.

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Effect of grain size（3373KB）	期刊论文	作者接受稿	开放获取	CC BY-NC-SA	浏览下载