Slow positron beam and nanoindentation study of irradiation-related defects in reactor vessel steels

doi:10.1016/j.jnucmat.2014.04.008

	Slow positron beam and nanoindentation study of irradiation-related defects in reactor vessel steels
	Wu, YC 1; Zhang, CH3 ; Ren, A 2; Qian, WJ 2; Xu, CL 2; Liu, XB 2; Wang, RS 2; Jiang, J 1
刊名	JOURNAL OF NUCLEAR MATERIALS
	2014
卷号	451 期号:1-3 页码:249-254
ISSN号	0022-3115
DOI	10.1016/j.jnucmat.2014.04.008
英文摘要	In order to understand the nature of the hardening after radiation in reactor vessel steels, China A508-3 steels were implanted by proton with an energy of 240 keV up to 2.5 x 10(16), 5.5 x 10(16), 1.1 x 10(17), and 2.5 x 10(17) ions cm(-2), respectively. Vacancy type defects were detected by energy-variable positron beam Doppler broadening technique and then nanoindentation measurements were performed to investigate proton-induced hardening effects. The results showed that S-parameter increased as a function of positron incident energy after irradiation, and the increasing rate of the S-parameter near the surface was larger than that in the bulk due to radiation damage. The size of vacancy type defects increased with dose. Irradiation induced hardening was shown that the average hardness increased with dose. Moreover a direct correlation between positron annihilation parameter and hardness was found based on Kasada method. (C) 2014 Elsevier B.V. All rights reserved.
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资助项目	Suzhou Application Foundation[SYG201254] ; Suzhou Application Foundation[SYG201341]
WOS关键词	MICROSTRUCTURAL EVOLUTION ; NANO-INDENTATION ; ION ; ANNIHILATION ; HARDNESS ; MODEL
WOS研究方向	Materials Science ; Nuclear Science & Technology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000338618600032
内容类型	期刊论文
源URL	[http://ir.impcas.ac.cn/handle/113462/14986]
专题	近代物理研究所_能源材料研究组近代物理研究所_材料研究中心
作者单位	1.武汉大学 2.苏州热工研究院 3.中国科学院近代物理研究所
推荐引用方式 GB/T 7714	Wu, YC,Zhang, CH,Ren, A,et al. Slow positron beam and nanoindentation study of irradiation-related defects in reactor vessel steels[J]. JOURNAL OF NUCLEAR MATERIALS,2014,451(1-3):249-254.
APA	Wu, YC.,Zhang, CH.,Ren, A.,Qian, WJ.,Xu, CL.,...&Jiang, J.(2014).Slow positron beam and nanoindentation study of irradiation-related defects in reactor vessel steels.JOURNAL OF NUCLEAR MATERIALS,451(1-3),249-254.
MLA	Wu, YC,et al."Slow positron beam and nanoindentation study of irradiation-related defects in reactor vessel steels".JOURNAL OF NUCLEAR MATERIALS 451.1-3(2014):249-254.