Effect of Nb on the microstructural evolution and microhardness of Super304H austenitic stainless steel weld metals during long-term aging

doi:10.1515/ijmr-2021-8263

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	Effect of Nb on the microstructural evolution and microhardness of Super304H austenitic stainless steel weld metals during long-term aging
	Xiao, Xiaopeng 3,4; Li, Dianzhong 3; Li, Yiyi 2,3; Lu, Shanping 1
刊名	INTERNATIONAL JOURNAL OF MATERIALS RESEARCH
	2022-01-27
卷号	113 期号:1 页码:33-43
关键词	Aging treatment Microhardness Niobium Precipitates Super304H weld metal
ISSN号	1862-5282
DOI	10.1515/ijmr-2021-8263
通讯作者	Lu, Shanping(shplu@imr.ac.cn)
英文摘要	The microstructural evolution and mechanical properties of Super304H austenitic stainless steel weld metals with Nb-free and 1.0 % Nb-additive were investigated during 650 degrees C long-term aging. Massive nanoscale M C-23(6) particles distributed in the interdendritic regions of the Nb-free weld metal while most of the M C-23(6) formed and coarsened on the phase interface between the primary Nb(C, N) phase and matrix in the Nb-bearing weld metal. Nano-sized Cu-rich particles dispersed inside the grains in both weld metals. All of these nano-sized particles gradually coarsened over time. The Cu-rich particles with high distribution density and nanometer size affect the microhardness of both weld metals most during long-term aging. The addition of Nb could increase the microhardness in the relatively short aging time, while the effect of Nb-addition on the microhardness in long-term aging is insignificant.
资助项目	Shenyang National Laboratory for Materials Science Innovation[L2019R35]
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	WALTER DE GRUYTER GMBH
WOS记录号	WOS:000749454300004
资助机构	Shenyang National Laboratory for Materials Science Innovation
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/173542]
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.Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang, Peoples R China 4.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang, Peoples R China
推荐引用方式 GB/T 7714	Xiao, Xiaopeng,Li, Dianzhong,Li, Yiyi,et al. Effect of Nb on the microstructural evolution and microhardness of Super304H austenitic stainless steel weld metals during long-term aging[J]. INTERNATIONAL JOURNAL OF MATERIALS RESEARCH,2022,113(1):33-43.
APA	Xiao, Xiaopeng,Li, Dianzhong,Li, Yiyi,&Lu, Shanping.(2022).Effect of Nb on the microstructural evolution and microhardness of Super304H austenitic stainless steel weld metals during long-term aging.INTERNATIONAL JOURNAL OF MATERIALS RESEARCH,113(1),33-43.
MLA	Xiao, Xiaopeng,et al."Effect of Nb on the microstructural evolution and microhardness of Super304H austenitic stainless steel weld metals during long-term aging".INTERNATIONAL JOURNAL OF MATERIALS RESEARCH 113.1(2022):33-43.