Localized Liquation and Resultant Pitting Corrosion Behavior of Welding Coarse-Grained Heat-Affected Zone in Niobium-Stabilized Austenitic Stainless Steel

doi:10.1149/2.0091811jes

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	Localized Liquation and Resultant Pitting Corrosion Behavior of Welding Coarse-Grained Heat-Affected Zone in Niobium-Stabilized Austenitic Stainless Steel
	Bai, Guanshun 1,2; Li, Yiyi 2; Lu, Shanping 2
刊名	JOURNAL OF THE ELECTROCHEMICAL SOCIETY
	2018-08-09
卷号	165 期号:11 页码:C722-C731
ISSN号	0013-4651
DOI	10.1149/2.0091811jes
通讯作者	Lu, Shanping(shplu@inv.ac.cu)
英文摘要	Effect of localized liquation on pitting corrosion behavior of Nb-stabilized austenitic stainless steels was investigated by potentio-dynamic and potentiostatic polarization tests on the welding coarse-grained heat-affected zone (CGHAZ) samples simulated using finite-element software SYSWELD and Gleeble simulator. Results indicated that localized liquation gave rise to Nb-rich liquation bands along grain boundary, inhibiting metastable pit initiation and growth, but resulted in liquation cracks that facilitated the occurrence of stable pitting. Moreover, the large scatter in pitting potential and passive current density observed in CGHAZ samples was attributed to the heterogeneities in the distribution, geometry and dimensions of liquation cracks. (c) 2018 Ihe Electrochemical Society.
资助项目	National High Technology Research and Development Program of China[2012AA03A501] ; Research Program of Shenyang National Laboratory for Materials Science[2016RP020]
WOS研究方向	Electrochemistry ; Materials Science
语种	英语
出版者	ELECTROCHEMICAL SOC INC
WOS记录号	WOS:000441163300001
资助机构	National High Technology Research and Development Program of China ; Research Program of Shenyang National Laboratory for Materials Science
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/128907]
专题	金属研究所_中国科学院金属研究所
通讯作者	Lu, Shanping
作者单位	1.Ordnance Sci Inst China, Ningbo Branch, Ningbo 315103, Zhejiang, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Bai, Guanshun,Li, Yiyi,Lu, Shanping. Localized Liquation and Resultant Pitting Corrosion Behavior of Welding Coarse-Grained Heat-Affected Zone in Niobium-Stabilized Austenitic Stainless Steel[J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY,2018,165(11):C722-C731.
APA	Bai, Guanshun,Li, Yiyi,&Lu, Shanping.(2018).Localized Liquation and Resultant Pitting Corrosion Behavior of Welding Coarse-Grained Heat-Affected Zone in Niobium-Stabilized Austenitic Stainless Steel.JOURNAL OF THE ELECTROCHEMICAL SOCIETY,165(11),C722-C731.
MLA	Bai, Guanshun,et al."Localized Liquation and Resultant Pitting Corrosion Behavior of Welding Coarse-Grained Heat-Affected Zone in Niobium-Stabilized Austenitic Stainless Steel".JOURNAL OF THE ELECTROCHEMICAL SOCIETY 165.11(2018):C722-C731.