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

IMR OpenIR

	Effect of Nb on the microstructural evolution and microhardness of Super304H austenitic stainless steel weld metals during long-term aging
	Xiao, Xiaopeng 2,3; Li, Dianzhong 3; Li, Yiyi 3,4; Lu, Shanping 1
通讯作者	Lu, Shanping(shplu@imr.ac.cn)
	2022-01-27
发表期刊	INTERNATIONAL JOURNAL OF MATERIALS RESEARCH
ISSN	1862-5282
卷号	113 期号:1 页码:33-43
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.
关键词	Aging treatment Microhardness Niobium Precipitates Super304H weld metal
资助者	Shenyang National Laboratory for Materials Science Innovation
DOI	10.1515/ijmr-2021-8263
收录类别	SCI
语种	英语
资助项目	Shenyang National Laboratory for Materials Science Innovation[L2019R35]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000749454300004
出版者	WALTER DE GRUYTER GMBH
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/173543
专题	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.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, 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.