Positron annihilation study of the micro-defects induced by cavitation in mild steel

	Positron annihilation study of the micro-defects induced by cavitation in mild steel
	Zhao, M; Wang, JD; Chen, DR; Hao, XP; Wang, BY; Hao XP(郝小鹏); Wang BY(王宝义)
刊名	PHYSICA B-CONDENSED MATTER
	2008
卷号	403 期号:17 页码:2594-2596
关键词	cavitation positron Doppler broadening measurement positron annihilation lifetime micro-defects mild steel
通讯作者	[Zhao, Ming ; Wang, Jiadao ; Chen, Darong] Tsinghua Univ, State Key Lab Tribol, Beijing 100084, Peoples R China ; [Hao, Xiaopeng ; Wang, Baoyi] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
英文摘要	Cavitation-induced micro-defects in mild steel after cavitation experiment in the fluid field have been studied by positron Doppler broadening measurement and positron annihilation lifetime spectra (PALS). Depth-resolved positron Doppler S-parameter (DPDS) results showed that S-parameter increased and micro-defects between the surface and the bulk has obvious variation with depth during the cavitation process. From the positron lifetime results, it was found that the size and number of micro-defects increase with the development of cavitation. These results suggest that more micro-defects are generated in mild steel bulk during the cavitation process than those in the mild steel surface layer region, although more mico-defects seen in the mild steel surface layer. Moreover, the size of micro-defects in mild steel bulk increases remarkably owing to their transfer and aggregation. (C) 2008 Elsevier B.V. All rights reserved.
学科主题	Physics
类目[WOS]	Physics, Condensed Matter
研究领域[WOS]	Physics
原文出处	SCI
语种	英语
WOS记录号	WOS:000257915100011
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/239790]
专题	高能物理研究所_多学科研究中心高能物理研究所_实验物理中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Zhao, M,Wang, JD,Chen, DR,et al. Positron annihilation study of the micro-defects induced by cavitation in mild steel[J]. PHYSICA B-CONDENSED MATTER,2008,403(17):2594-2596.
APA	Zhao, M.,Wang, JD.,Chen, DR.,Hao, XP.,Wang, BY.,...&王宝义.(2008).Positron annihilation study of the micro-defects induced by cavitation in mild steel.PHYSICA B-CONDENSED MATTER,403(17),2594-2596.
MLA	Zhao, M,et al."Positron annihilation study of the micro-defects induced by cavitation in mild steel".PHYSICA B-CONDENSED MATTER 403.17(2008):2594-2596.