Vacancy like defects and hardening of tungsten under irradiation with He ions at 800 degrees C

doi:10.1016/j.fusengdes.2017.05.043

	Vacancy like defects and hardening of tungsten under irradiation with He ions at 800 degrees C
	Cui, M. H.1; Shen, T. L.1; Zhu, H. P.3; Wang, J.4; Cao, X. Z.2; Zhang, P.2; Pang, L. L.1; Yao, C. F.1; Wei, K. F.1; Zhu, Y. B.1
刊名	FUSION ENGINEERING AND DESIGN
	2017-10-01
卷号	121 页码:313-318
关键词	Vacancy like defect Hardening Tungsten He irradiation HenVm complex
ISSN号	0920-3796
DOI	10.1016/j.fusengdes.2017.05.043
英文摘要	The irradiation induced hardening and vacancy like defects are investigated as a function of irradiation fluences with 200 keV He ion implantation at 800 degrees C in this work. Nano-indentation tests show the irradiation induces hardening and the hardness values increase with increasing irradiation fluences. Doppler broadening spectroscopy analyses of slow positron annihilation find that a large amount of vacancy like defects are produced under irradiation. When the He/dpa ratio is less than about 2.2% He/dpa, the vacancy like defects include mainly empty vacancy clusters and loops, and HenVm complexes. When the He/dpa ratio is more than about 2.2% He/dpa, the vacancy like defects become mainly HenVm complexes with increasing irradiation fluences. Meanwhile, these complexes increase in size and He/V ratio while the irradiation fluences increase. Based on the Orowan hardening mechanism, we discuss the relationship between irradiation induced hardening and defects under indentation, especially the contribution of HenVm complexes to the hardening. (C) 2017 Elsevier B.V. All rights reserved.
资助项目	National Natural Science Foundation of China[11605256] ; National Natural Science Foundation of China[91426301] ; National Natural Science Foundation of China[11505246] ; National Natural Science Foundation of China[11405231] ; National Natural Science Foundation of China[11575258] ; National Natural Science Foundation of China[11375242] ; Chinese Academy of Sciences[XDA03010301]
WOS关键词	HELIUM-IMPLANTED TUNGSTEN ; LOW-ENERGY ; POSITRON-ANNIHILATION ; BEAM IRRADIATION ; NANO-INDENTATION ; RADIATION-DAMAGE ; IN-SITU ; SIMULATION ; HARDNESS ; EVOLUTION
WOS研究方向	Nuclear Science & Technology
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000411550100043
资助机构	National Natural Science Foundation of China ; Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/45718]
专题	中国科学院近代物理研究所
通讯作者	Cui, M. H.; Wang, Z. G.
作者单位	1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 710000, Gansu, Peoples R China 2.Chinese Acad Sci, Inst High Energy Phys, Key Lab Nucl Anal Tech, Beijing 100049, Peoples R China 3.North China Elect Power Univ, Beijing 102206, Peoples R China 4.Chinese Acad Sci, Ningbo Inst Ind Technol, Ningbo 315200, Zhejiang, Peoples R China
推荐引用方式 GB/T 7714	Cui, M. H.,Shen, T. L.,Zhu, H. P.,et al. Vacancy like defects and hardening of tungsten under irradiation with He ions at 800 degrees C[J]. FUSION ENGINEERING AND DESIGN,2017,121:313-318.
APA	Cui, M. H..,Shen, T. L..,Zhu, H. P..,Wang, J..,Cao, X. Z..,...&Wang, Z. G..(2017).Vacancy like defects and hardening of tungsten under irradiation with He ions at 800 degrees C.FUSION ENGINEERING AND DESIGN,121,313-318.
MLA	Cui, M. H.,et al."Vacancy like defects and hardening of tungsten under irradiation with He ions at 800 degrees C".FUSION ENGINEERING AND DESIGN 121(2017):313-318.