MICROSTRUCTURE NEAR SCRATCH ON ALLOY 690TT AND STRESS CORROSION INDUCED BY SCRATCHING

doi:10.3724/SP.J.1037.2011.00213

IMR OpenIR

	MICROSTRUCTURE NEAR SCRATCH ON ALLOY 690TT AND STRESS CORROSION INDUCED BY SCRATCHING
	Meng Fanjiang 1; Wang Jianqiu 1; Han En-Hou 1; Shoji, Testuo 2; Ke Wei 1
通讯作者	Wang Jianqiu(wangjianqiu@imr.ac.cn)
	2011-07-11
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	47 期号:7 页码:839-846
摘要	The microstructure and stress corrosion cracking (SCC) behavior of scratched zone on alloy 690TT were studied by using rnicrohardness, TEM, EBSD-OIM and immersion experiment in caustic solution. It was found that a deformed hardening layer with a dimension range of 100 Am was produced near the scratch. TEM and EBSD-OIM observations showed that the grains at shallow surface of scratch groove were refined to nano size. SCC tests for scratched alloy 690TT were performed in caustic solution at high temperature with or without addition of lead oxides. The results showed that SCC cracks initiated and propagated at scratch banks and scratch grooves. Grain boundaries, twin boundaries deformed and microcracks produced during scratching process are preferential sites for SCC. The oxide films formed on scratch groove were loosed by lead. The SCC crack length increased with increase of lead content. Scratched alloy 690TT is susceptible to SCC.
关键词	Ni base alloy 690 surface scratch microstructure stress corrosion cracking
资助者	National Basic Research Program of China
DOI	10.3724/SP.J.1037.2011.00213
收录类别	SCI
语种	英语
资助项目	National Basic Research Program of China[2006CB605000]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000294980700012
出版者	SCIENCE PRESS
引用统计	被引频次：15[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/105953
专题	中国科学院金属研究所
通讯作者	Wang Jianqiu
作者单位	1.Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China 2.Tohoku Univ, Fracture & Reliabil Res Inst, Sendai, Miyagi 9808579, Japan
推荐引用方式 GB/T 7714	Meng Fanjiang,Wang Jianqiu,Han En-Hou,et al. MICROSTRUCTURE NEAR SCRATCH ON ALLOY 690TT AND STRESS CORROSION INDUCED BY SCRATCHING[J]. ACTA METALLURGICA SINICA,2011,47(7):839-846.
APA	Meng Fanjiang,Wang Jianqiu,Han En-Hou,Shoji, Testuo,&Ke Wei.(2011).MICROSTRUCTURE NEAR SCRATCH ON ALLOY 690TT AND STRESS CORROSION INDUCED BY SCRATCHING.ACTA METALLURGICA SINICA,47(7),839-846.
MLA	Meng Fanjiang,et al."MICROSTRUCTURE NEAR SCRATCH ON ALLOY 690TT AND STRESS CORROSION INDUCED BY SCRATCHING".ACTA METALLURGICA SINICA 47.7(2011):839-846.