Microstructure of a domestically fabricated dissimilar metal weld joint (SA508-52M-309L-CF8A) in nuclear power plant

doi:10.1016/j.matchar.2018.12.011

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	Microstructure of a domestically fabricated dissimilar metal weld joint (SA508-52M-309L-CF8A) in nuclear power plant
	Ming, Hongliang; Zhang, Zhiming; Wang, Jianqiu; Han, En-Hou
刊名	MATERIALS CHARACTERIZATION
	2019-02-01
卷号	148 页码:100-115
关键词	Dissimilar metal weld joint GTAW Microstructure Duplex stainless steel Nuclear power plant
ISSN号	1044-5803
DOI	10.1016/j.matchar.2018.12.011
通讯作者	Wang, Jianqiu(wangjianqiu@imr.ac.cn)
英文摘要	A dissimilar metal weld joint (DMWJ) between low alloy steel and casted duplex stainless steel (CDSS) prepared by automatic multi-pass gas tungsten arc welding (GTAW) with 309L and 52M filler metals is studied by optical microscopy, scanning electron microscopy (with electron back scattering diffraction and energy dispersive X-ray spectroscopy systems), scanning probe microscope techniques and micro-hardness testing. Carbon-depleted zones and microstructure transitions are found in the SA508 heat affected zone (HAZ). Type-I and type-II boundaries exist in 52Mb at some places near the SA508-52Mb interface. The ferrite at the unmixed zone and the zone adjacent to the 309L-CF8A interface (within similar to 300 mu m) changes to a lamellar structure with intermixed ferrite and austenite strips during the buttering process. Epitaxial growth and higher residual strain level are found at the 52Mw-52Mb, 52Mw-309L and 309L-CF8A interface areas. The micro-hardness distribution across the dissimilar metal weld joint is related to the complex chemical composition distribution and the microstructure transition, which in turn made it non-uniform and complicated.
资助项目	National Key Research and Development Program of China[2016YFE0105200] ; National Key Research and Development Program of China[2017YFB0702100] ; National Natural Science Foundation of China[51771211] ; Key Research Program of Frontier Sciences, CAS[QYZDY-SSW-JSC012] ; Key Program of the Chinese Academy of Sciences[ZDRW-CN-2017-1]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE INC
WOS记录号	WOS:000458228100012
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences, CAS ; Key Program of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/131816]
专题	金属研究所_中国科学院金属研究所
通讯作者	Wang, Jianqiu
作者单位	Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Ming, Hongliang,Zhang, Zhiming,Wang, Jianqiu,et al. Microstructure of a domestically fabricated dissimilar metal weld joint (SA508-52M-309L-CF8A) in nuclear power plant[J]. MATERIALS CHARACTERIZATION,2019,148:100-115.
APA	Ming, Hongliang,Zhang, Zhiming,Wang, Jianqiu,&Han, En-Hou.(2019).Microstructure of a domestically fabricated dissimilar metal weld joint (SA508-52M-309L-CF8A) in nuclear power plant.MATERIALS CHARACTERIZATION,148,100-115.
MLA	Ming, Hongliang,et al."Microstructure of a domestically fabricated dissimilar metal weld joint (SA508-52M-309L-CF8A) in nuclear power plant".MATERIALS CHARACTERIZATION 148(2019):100-115.