Effects of stress-relief pre-annealing on deuterium trapping and diffusion in tungsten

doi:10.1016/j.fusengdes.2017.05.007

	Effects of stress-relief pre-annealing on deuterium trapping and diffusion in tungsten
	Zhu, Xiu-Li 1,2; Cheng, Long 1,2; De Temmerman, Gregory 3; Shi, Li-Qun 4; Yuan, Yue 1,2; Wang, Bao-Yi 5; Cao, Xing-Zhong 5; Lu, Er-Yang 5; Zhang, Ying 1,2; Lu, Guang-Hong 1,2
刊名	FUSION ENGINEERING AND DESIGN
	2017-12-01
卷号	125 页码:526-530
关键词	Deuterium Tungsten Stress-relief pre-annealing Residual stresses
ISSN号	0920-3796
DOI	10.1016/j.fusengdes.2017.05.007
英文摘要	Positron annihilation Doppler broadening spectroscopy (PA-DBS) with slow positrons was utilized to characterize the change of vacancy-type defects induced by a stress-relief annealing (1273 K for 1 h in vacuum) as pre-annealing can remove not only residual stresses but also most intrinsic defects of the material. Deuterium behavior after low energy (40 eV/D) and high-flux (10(24) D/m(2) s) plasma exposure was analyzed by a combination of PA-DBS, elastic recoil detection analysis (ERDA) and thermal desorption spectroscopy (TDS). It is found that the vacancy defects density in tungsten is largely decreased by annealing and some intrinsic vacancies clusters to be multi-vacancies during the annealing process. With deuterium plasma exposure, a general decrease of S parameter found in both non-and pre-annealed tungsten suggests the deuterium occupation of vacancy-type defects. In combination of the S parameter change in the non-and pre-annealed tungsten, it is implied that deuterium trapping ability of vacancy type defects is constrained due to the residual stresses. This confinement effect concentrates on the top surface and it becomes weaker with increasing depth. A similar deuterium distribution in the near surface of non-and pre-annealed tungsten supports this confinement effect. In addition, comparing the amount of deuterium retained in the near surface and in the bulk suggests that the residual stress facilitate deuterium to diffuse into a larger depth in tungsten. (C) 2017 Elsevier B.V. All rights reserved.
资助项目	National Natural Science Foundation of China (NSFC)[51671009] ; National Natural Science Foundation of China (NSFC)[51401012] ; China National Funds for Distinguished Young Scholars[51325103]
WOS关键词	TEMPERATURE-DEPENDENCE ; POSITRON-ANNIHILATION ; LOW-ENERGY ; HIGH-FLUX ; RETENTION ; PLASMA ; DEFECTS ; BEAM ; ITER
WOS研究方向	Nuclear Science & Technology
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000419407300081
资助机构	National Natural Science Foundation of China (NSFC) ; China National Funds for Distinguished Young Scholars
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/47177]
专题	中国科学院近代物理研究所
通讯作者	Zhang, Ying
作者单位	1.Beihang Univ, Dept Phys, Beijing 100191, Peoples R China 2.Beihang Univ, Beijing Key Lab Adv & Phys, Beijing 100191, Peoples R China 3.ITER Org, Route Vinon Verdon,CS90 046, F-13067 St Paul Les Durance, France 4.Fudan Univ, Inst Modern Phys, Shanghai 200433, Peoples R China 5.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhu, Xiu-Li,Cheng, Long,De Temmerman, Gregory,et al. Effects of stress-relief pre-annealing on deuterium trapping and diffusion in tungsten[J]. FUSION ENGINEERING AND DESIGN,2017,125:526-530.
APA	Zhu, Xiu-Li.,Cheng, Long.,De Temmerman, Gregory.,Shi, Li-Qun.,Yuan, Yue.,...&Lu, Guang-Hong.(2017).Effects of stress-relief pre-annealing on deuterium trapping and diffusion in tungsten.FUSION ENGINEERING AND DESIGN,125,526-530.
MLA	Zhu, Xiu-Li,et al."Effects of stress-relief pre-annealing on deuterium trapping and diffusion in tungsten".FUSION ENGINEERING AND DESIGN 125(2017):526-530.