| Stabilizing nanograined Fe-Cr alloy by Si-assisted grain boundary segregation | |
| Xu, X. F.1,2; Li, X. Y.1; Zhang, B.1 | |
| Corresponding Author | Li, X. Y.(xyli@imr.ac.cn) |
| 2023-01-20 | |
| Source Publication | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
 |
| ISSN | 1005-0302 |
| Volume | 134Pages:223-233 |
| Abstract | Intentional solute segregation at grain boundary (GB) can effectively stabilize the nanograined alloys by reducing the excess energy and mobility of GB, but it usually works for binary alloys with sufficient GB segregation tendency. Here, we found that the segregation of Cr can be enhanced in a nanostruc-tured Fe-8Cr alloy with insufficient GB segregation tendency through the interaction of another solute Si (1.0 wt.%). After surface mechanical grinding treatment and subsequent annealing, the nanograined Fe-8Cr-1Si is more thermally stable than the nanograined Fe-8Cr, which is mainly attributed to the Si -enhanced Cr segregation as observed by Super-X energy-dispersive X-ray spectroscopy (EDS) mapping system. With the grain refinement to nanoscale, the thermal stability is further improved due to the in-crease of Cr content at GBs and the precipitates formed at appropriate high temperatures. The present finding provides guidance for the development of advanced nanostructured ternary alloys. ?? 2022 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology. |
| Keyword | Segregation Grain boundary Fe -Cr -Si alloy Nanocrystalline Thermal stability |
| Funding Organization | Ministry of Science and Technology of the People's Republic of China |
| DOI | 10.1016/j.jmst.2022.06.028 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Ministry of Science and Technology of the People's Republic of China[2017YFA0204401] ; Ministry of Science and Technology of the People's Republic of China[2017YFA0700700] |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000841304700002 |
| Publisher | JOURNAL MATER SCI TECHNOL |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/174561 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Li, X. Y. |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China |
| Recommended Citation GB/T 7714 | Xu, X. F.,Li, X. Y.,Zhang, B.. Stabilizing nanograined Fe-Cr alloy by Si-assisted grain boundary segregation[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2023,134:223-233. |
| APA | Xu, X. F.,Li, X. Y.,&Zhang, B..(2023).Stabilizing nanograined Fe-Cr alloy by Si-assisted grain boundary segregation.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,134,223-233. |
| MLA | Xu, X. F.,et al."Stabilizing nanograined Fe-Cr alloy by Si-assisted grain boundary segregation".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 134(2023):223-233. |
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