Microstructure, hardness and defect structure of the He irradiated ODS ferritic steel

doi:10.1016/j.jallcom.2016.08.312

HFCAS OpenIR > 中科院固体物理研究所

	Microstructure, hardness and defect structure of the He irradiated ODS ferritic steel
	Gao, R.1 ; Cheng, B.2; Zeng, L. F.1,2; Miao, S.1,2; Hou, J.1,2; Zhang, T.1 ; Wang, X. P.1; Fang, Q. F.1; Liu, C. S.1
	2017-01-15
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
摘要	In this paper, the microstructure, hardness and defect structure of the oxide dispersion strengthened Fe-16Cr-2W-0.5Ti-0.4Y(2)O(3) (designated as ODS-16Cr) and Fe-16Cr-2W-0.5Ti-0.4Y(2)O(3)-4Al-1Zr (ODS-16Cr-Al/Zr) steels irradiated with different doses of He ions were investigated by means of TEM, nanoindentation and positron annihilation spectroscopy. In the both alloys, nano-scale bubbles appeared in the vicinity of the precipitates as well as the grain boundaries. High density dislocation networks were observed as well. Moreover, the hardness of the irradiated steels increased distinctly with increasing He implantation. The irradiation hardening in the ODS-16Cr-Al/Zr alloy is more prominent in comparison with the ODS-16Cr alloy. The positron annihilation results illustrated that concentration of vacancy clusters of ODS-16Cr-Al/Zr steel is higher in the near surface under the larger dose, which is one reason of stronger irradiation hardening below the surface of 300-400 nm. The higher concentration of vacancies or vacancy clusters in ODS-16Cr-Al/Zr samples can be attributed to the fact that the solute Al atoms can effectively trap interstitials, which suppresses the annihilation of interstitials with vacancies. (C) 2016 Elsevier B.V. All rights reserved.
文章类型	Article
关键词	Ods Steel He Ions Irradiation Hardness Positron Annihilation
WOS标题词	Science & Technology ; Physical Sciences ; Technology
DOI	10.1016/j.jallcom.2016.08.312
关键词[WOS]	POSITRON-ANNIHILATION SPECTROSCOPY ; BEAM IRRADIATION ; HELIUM ; F82H ; SYSTEMS ; ALLOYS ; RATES
收录类别	SCI
语种	英语
项目资助者	National Natural Science Foundation of China(11175203 ; National Natural Science Foundation of China(11175203 ; National Natural Science Foundation of China(11175203 ; National Natural Science Foundation of China(11175203 ; Institute of Modern Physics (IMP) in Lanzhou, China ; Institute of Modern Physics (IMP) in Lanzhou, China ; Institute of Modern Physics (IMP) in Lanzhou, China ; Institute of Modern Physics (IMP) in Lanzhou, China ; 11375230) ; 11375230) ; 11375230) ; 11375230)
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000386227900081
引用统计	被引频次：25[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/334002/30145
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.Univ Sci & Technol China, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Gao, R.,Cheng, B.,Zeng, L. F.,et al. Microstructure, hardness and defect structure of the He irradiated ODS ferritic steel[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2017,691(无):653-658.
APA	Gao, R..,Cheng, B..,Zeng, L. F..,Miao, S..,Hou, J..,...&Liu, C. S..(2017).Microstructure, hardness and defect structure of the He irradiated ODS ferritic steel.JOURNAL OF ALLOYS AND COMPOUNDS,691(无),653-658.
MLA	Gao, R.,et al."Microstructure, hardness and defect structure of the He irradiated ODS ferritic steel".JOURNAL OF ALLOYS AND COMPOUNDS 691.无(2017):653-658.

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