| Influence of carbon content on the microstructure and cryogenic tensile properties of N50 austenitic stainless steel after aging treatment | |
| Zhai, Ruzong1,2,3; Zhang, Honglin1,3; Liu, Sheng1,2,3; Sun, Mingyue1,3; Sheng, Shaolong4; Xu, Bin1,3 | |
| Corresponding Author | Xu, Bin(bxu@imr.ac.cn) |
| 2022-12-01 | |
| Source Publication | JOURNAL OF NUCLEAR MATERIALS
 |
| ISSN | 0022-3115 |
| Volume | 571Pages:12 |
| Abstract | Nitrogen strengthened stainless steel named N50 fully meets the strength demand of developing novel alloys for more powerful fusion reactor applications in superconducting coil armor materials. The detailed evolution of microstructure and its resultant effect on tensile properties of N50 steel with two different C contents after aging at 650 degrees C were investigated. The results indicated that the cryogenic ductility of 0.04 wt % C steel decreased significantly with the extension of aging time, while the ductility of 0.01 wt % C steel remained stable. Bulk primary MX precipitates and Z phases are distributed in the matrix af-ter solution annealing. After aging treatment, the flake M23C6 mostly occupies the grain boundaries of 0.04 wt % C steel, while the smaller cubical Z phases were the main intergranular precipitates in the 0.01 wt % C steel. The higher carbon content increases the nucleation driving force of M23C6 and con-tributes to its more precipitations after aging. The larger intergranular M23C6 in 0.04 wt % C steel leads to its brittle fracture features. While the stable intergranular Z phases in 0.01 wt % C steel obtained rela-tively excellent low-temperature plasticity. Serving as a superconducting coil armor material, the carbon content of N50 steel should be limited to acquire better cryogenic mechanical properties by eliminating the precipitation of intergranular M23C6.(c) 2022 Elsevier B.V. All rights reserved. |
| Keyword | N50 steel Aging treatment M 23 C 6 Z phase Cryogenic tensile properties |
| Funding Organization | National Key Research and Development Program ; Key Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; IMR Innovation Foundation ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Ling Chuang Research Project of China National Nuclear Corporation ; Youth Innovation Promotion Association of CAS |
| DOI | 10.1016/j.jnucmat.2022.154023 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Key Research and Development Program[2017YFE0301403] ; Key Program of the Chinese Academy of Sciences[ZDRW-CN-2021-2-4-2] ; National Natural Science Foundation of China[52173305] ; National Natural Science Foundation of China[52101061] ; China Postdoctoral Science Foundation[2021M703276] ; IMR Innovation Foundation[2022-PY12] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDC0400000] ; Ling Chuang Research Project of China National Nuclear Corporation ; Youth Innovation Promotion Association of CAS |
| WOS Research Area | Materials Science ; Nuclear Science & Technology |
| WOS Subject | Materials Science, Multidisciplinary ; Nuclear Science & Technology |
| WOS ID | WOS:000872389200001 |
| Publisher | ELSEVIER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/176375 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Xu, Bin |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 4.Northeastern Univ, Minist Educ, Key Lab Electromagnet Proc Mat, Shenyang 110819, Peoples R China |
| Recommended Citation GB/T 7714 | Zhai, Ruzong,Zhang, Honglin,Liu, Sheng,et al. Influence of carbon content on the microstructure and cryogenic tensile properties of N50 austenitic stainless steel after aging treatment[J]. JOURNAL OF NUCLEAR MATERIALS,2022,571:12. |
| APA | Zhai, Ruzong,Zhang, Honglin,Liu, Sheng,Sun, Mingyue,Sheng, Shaolong,&Xu, Bin.(2022).Influence of carbon content on the microstructure and cryogenic tensile properties of N50 austenitic stainless steel after aging treatment.JOURNAL OF NUCLEAR MATERIALS,571,12. |
| MLA | Zhai, Ruzong,et al."Influence of carbon content on the microstructure and cryogenic tensile properties of N50 austenitic stainless steel after aging treatment".JOURNAL OF NUCLEAR MATERIALS 571(2022):12. |
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