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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)
2008
发表期刊PHYSICA B-CONDENSED MATTER
卷号403期号:17页码:2594-2596
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
文章类型Article
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.
关键词cavitation positron Doppler broadening measurement positron annihilation lifetime micro-defects mild steel
学科领域Physics
DOI10.1016/j.physb.2008.01.037
URL查看原文
语种英语
WOS研究方向Physics
WOS类目Physics, Condensed Matter
WOS记录号WOS:000257915100011
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被引频次:5[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/239790
专题多学科研究中心
作者单位中国科学院高能物理研究所
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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.
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