| Role of Si content on microstructural and mechanical responses of 16Cr-25Ni superaustenitic stainless steel weld metals | |
| Tian, Wenbin1,2; Wei, Shitong1,3; Wu, Dong1,3; Sun, Jian1,3; Dong, Wenchao1,3; Lu, Shanping1 | |
| Corresponding Author | Lu, Shanping(shplu@imr.ac.cn) |
| 2022-09-05 | |
| Source Publication | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| ISSN | 0921-5093 |
| Volume | 852Pages:13 |
| Abstract | In this work, three 16Cr-25Ni superaustenitic stainless steel weld metals with the Si content of 0.03 wt%, 1.22 wt % and 2.01 wt%, were prepared to study the microstructural evolution and its effect on mechanical properties. The results showed that with the increase of Si content, the size and number density of Mo-rich M6C carbide were increased in the weld metals. In particular, massive long strip shape M6C carbides were observed in the weld metal with the Si content of 2.01 wt%. For tensile tests, good match of strength and ductility was obtained in the weld metals with the Si content of 0.03 wt% and 1.22 wt%. However, the ductility of the weld metal was sharply decreased when the Si content further increased to 2.01 wt%, owing to the long strip shape M6C carbide that weakened the coordinated deformation with the matrix. The impact toughness was monotonously decreased from 185 J to 12 J with the increase of Si content, for the M6C carbide generated easier local stress concentration and fracture that the local stress concentration in the matrix was increasingly difficult to favor the twinning deformation. The results in this work are meaningful for the design of the weld metal with optimized micro-structure and high mechanical performance for liquid lead-bismuth eutectic environment. |
| Keyword | Superaustenitic stainless steel Weld metal Si content M6C Twinning deformation Mechanical properties |
| Funding Organization | Shenyang National Laboratory for Materials Science Innovation Projects SYNL2021 ; LingChuang Research Project of China National Nuclear Corporation |
| DOI | 10.1016/j.msea.2022.143727 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Shenyang National Laboratory for Materials Science Innovation Projects SYNL2021 ; LingChuang Research Project of China National Nuclear Corporation |
| WOS Research Area | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000842984600001 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/174534 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Lu, Shanping |
| Affiliation | 1.Chinese Acad Sci, Inst Metal Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Inst Metal Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Tian, Wenbin,Wei, Shitong,Wu, Dong,et al. Role of Si content on microstructural and mechanical responses of 16Cr-25Ni superaustenitic stainless steel weld metals[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2022,852:13. |
| APA | Tian, Wenbin,Wei, Shitong,Wu, Dong,Sun, Jian,Dong, Wenchao,&Lu, Shanping.(2022).Role of Si content on microstructural and mechanical responses of 16Cr-25Ni superaustenitic stainless steel weld metals.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,852,13. |
| MLA | Tian, Wenbin,et al."Role of Si content on microstructural and mechanical responses of 16Cr-25Ni superaustenitic stainless steel weld metals".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 852(2022):13. |
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