RESEARCH ON THE CARBIDE PRECIPITATION AND CHROMIUM DEPLETION IN THE GRAIN BOUNDARY OF ALLOY 690 CONTAINING DIFFERENT CONTENTS OF NITROGEN

doi:10.11900/0412.1961.2015.00636

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	RESEARCH ON THE CARBIDE PRECIPITATION AND CHROMIUM DEPLETION IN THE GRAIN BOUNDARY OF ALLOY 690 CONTAINING DIFFERENT CONTENTS OF NITROGEN
	Ma Yingche; Li Shuo; Hao Xianchao; Zha Xiangdong; Gao Ming; Liu Kui
刊名	ACTA METALLURGICA SINICA
	2016-08-11
卷号	52 期号:8 页码:980-986
关键词	alloy 690 N carbide precipitation chromium depletion
ISSN号	0412-1961
DOI	10.11900/0412.1961.2015.00636
通讯作者	Ma Yingche(ycma@imr.ac.cn)
英文摘要	Nickel-based alloy Inconel 690 (hereinafter called alloy 690) is currently replacing alloy 600 as steam generator tubes in pressurized water nuclear reactors, owing to its excellent resistance to intergranular stress corrosion cracking (IGSCC) and good mechanical properties. The carbide precipitation is a major microstructural characteristic during heat treatment of stainless steels and nickel-based alloys. The carbide precipitation and chromium depletion in the grain boundary of alloy 690 were investigated. The grain size and carbide of alloy 690 with 0.001% and 0.03% (mass fraction) nitrogen contents were observed and analyzed. The extent of chromium depletion in the vicinity of grain boundaries was quantitatively determined as a function of thermal treatment time. The solution treatment of the samples was at 1080 degrees C for 10 min, and then the samples were thermally treated at 715 degrees C for 1 similar to 25 h. The results show that the nitrogen addition decreases the intergranular carbide density and the average carbide length but increases its distance. The level of chromium in the depleted regions in alloy 690 with 0.03%N is higher than that with 0.001%N. This is attributed to the beneficial role of nitrogen addition against grain growth and sensitization.
资助项目	Chinese Academy of Scicences Innovation Foundation[CXJJ-14-M44]
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000381541900011
资助机构	Chinese Academy of Scicences Innovation Foundation
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/122770]
专题	金属研究所_中国科学院金属研究所
通讯作者	Ma Yingche
作者单位	Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Ma Yingche,Li Shuo,Hao Xianchao,et al. RESEARCH ON THE CARBIDE PRECIPITATION AND CHROMIUM DEPLETION IN THE GRAIN BOUNDARY OF ALLOY 690 CONTAINING DIFFERENT CONTENTS OF NITROGEN[J]. ACTA METALLURGICA SINICA,2016,52(8):980-986.
APA	Ma Yingche,Li Shuo,Hao Xianchao,Zha Xiangdong,Gao Ming,&Liu Kui.(2016).RESEARCH ON THE CARBIDE PRECIPITATION AND CHROMIUM DEPLETION IN THE GRAIN BOUNDARY OF ALLOY 690 CONTAINING DIFFERENT CONTENTS OF NITROGEN.ACTA METALLURGICA SINICA,52(8),980-986.
MLA	Ma Yingche,et al."RESEARCH ON THE CARBIDE PRECIPITATION AND CHROMIUM DEPLETION IN THE GRAIN BOUNDARY OF ALLOY 690 CONTAINING DIFFERENT CONTENTS OF NITROGEN".ACTA METALLURGICA SINICA 52.8(2016):980-986.