| Effect of Nb on the microstructural evolution and microhardness of Super304H austenitic stainless steel weld metals during long-term aging | |
| Xiao, Xiaopeng2,3; Li, Dianzhong3; Li, Yiyi3,4; Lu, Shanping1 | |
| Corresponding Author | Lu, Shanping(shplu@imr.ac.cn) |
| 2022-01-27 | |
| Source Publication | INTERNATIONAL JOURNAL OF MATERIALS RESEARCH
 |
| ISSN | 1862-5282 |
| Volume | 113Issue:1Pages:33-43 |
| Abstract | 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. |
| Keyword | Aging treatment Microhardness Niobium Precipitates Super304H weld metal |
| Funding Organization | Shenyang National Laboratory for Materials Science Innovation |
| DOI | 10.1515/ijmr-2021-8263 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Shenyang National Laboratory for Materials Science Innovation[L2019R35] |
| WOS Research Area | Metallurgy & Metallurgical Engineering |
| WOS Subject | Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000749454300004 |
| Publisher | WALTER DE GRUYTER GMBH |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/173543 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Lu, Shanping |
| Affiliation | 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 |
| Recommended Citation 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. |
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