Role of Ni content on microstructural and mechanical responses of Nb-stabilized metastable austenitic stainless steel weld metals
文献类型：期刊论文
| 作者 | Chen, Yakui1,2; Wei, Shitong2,3; Wu, Dong2,3; Lu, Shanping2 |
| 刊名 | JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
 |
| 出版日期 | 2023-09-01 |
| 卷号 | 26页码:8425-8439 |
| 关键词 | Metastable austenitic stainless steel Weld metal Solidification mode Primary NbC Deformation-induced martensitic transformation |
| ISSN号 | 2238-7854 |
| DOI | 10.1016/j.jmrt.2023.09.182 |
| 通讯作者 | Wu, Dong(wudong@imr.ac.cn) ; Lu, Shanping(shplu@imr.ac.cn) |
| 英文摘要 | Three Nb-stabilized metastable austenitic stainless steel (15Cr-9Ni-Nb steel) weld metals with Ni contents of 8.4 wt%, 9.2 wt%, and 10.2 wt% were designed and prepared by gas tungsten arc welding. The effects of Ni content on the solidification behavior, microstructure, and the mechanism of deformation-induced martensitic transformation in the tensile process were investigated via scanning electron microscopy, transmission electron microscopy, scanning transmission electron microscopy, and high-resolution transmission electron microscopy, and their effects on mechanical properties were also discussed. As the Ni content increased, the solidification mode of weld metals changed from ferrite-austenite mode to austeniteferrite mode, which made the segregation of Nb and Si at the interdendritic region more obvious and increased the total volume and the average size of primary NbC significantly. The large amount of coarse primary NbC in the AF weld metal damaged the impact toughness and reduction of area by inducing intergranular cracks and intergranular fractures. Moreover, both the three weld metals had poor mechanical stability and the deformation-induced martensitic transformation (DIMT) (g/a0) occurred during the tensile process, which contributed to increased tensile strength. As the Ni content increased, the mechanical stability of austenite increased, and the strengthing effect of DIMT decreased, while the uniform elongation of weld metals increased.(c) 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
| 资助项目 | Innovation Project of Shenyang National Laboratory for Ma-terials Science[SYNL-2022] ; China Institute of Atomic Energy[E141L803J1] |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001088775900001 |
| 出版者 | ELSEVIER |
| 资助机构 | Innovation Project of Shenyang National Laboratory for Ma-terials Science ; China Institute of Atomic Energy |
| 源URL | [http://ir.imr.ac.cn/handle/321006/177991]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Wu, Dong; Lu, Shanping |
| 作者单位 | 1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 3.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 | Chen, Yakui,Wei, Shitong,Wu, Dong,et al. Role of Ni content on microstructural and mechanical responses of Nb-stabilized metastable austenitic stainless steel weld metals[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2023,26:8425-8439. |
| APA | Chen, Yakui,Wei, Shitong,Wu, Dong,&Lu, Shanping.(2023).Role of Ni content on microstructural and mechanical responses of Nb-stabilized metastable austenitic stainless steel weld metals.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,26,8425-8439. |
| MLA | Chen, Yakui,et al."Role of Ni content on microstructural and mechanical responses of Nb-stabilized metastable austenitic stainless steel weld metals".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 26(2023):8425-8439. |
入库方式： OAI收割
来源：金属研究所
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