Martensite instability induced surface hardening on gradient nano-structured 316L stainless steel
文献类型：期刊论文
| 作者 | Lei, Y. B.1; Niu, Z. M.1,2; Gao, B.1; Sun, Y. T.3 |
| 刊名 | VACUUM
 |
| 出版日期 | 2025 |
| 卷号 | 231页码:5 |
| 关键词 | Gradient nanostructures 316L stainless steel Deformation induced martensite Annealed hardening Ni redistribution |
| ISSN号 | 0042-207X |
| DOI | 10.1016/j.vacuum.2024.113831 |
| 通讯作者 | Lei, Y. B.(yblei@imr.ac.cn) |
| 英文摘要 | Gradient nanostructured (GNS) 316L stainless steel manufactured by surface mechanical rolling treatment (SMRT) with a full martensitic phase on the surface exhibits an extraordinary annealed hardening. The surface hardness increases by 44 % from 4.1 GPa of the SMRTed 316L stainless steel up to 5.9 GPa after annealed at 400 degrees C for 120 min. Surface hardening is primarily attributed to the formation of low angle grain boundaries (LAGBs) within the original nano-grains. LAGBs function as substructures that effectively divide the grains into smaller units. These LAGBs originate from lattice distortions caused by Ni segregation during the annealing process. Furthermore, the redistribution of Ni can be regarded as a nucleation step leading to phase reversion from martensite to austenite. Additionally, the presence of Ni-enriched zones distributed within the martensite matrix serves to hinder dislocation movement, thus contributing to the observed surface hardening. |
| 资助项目 | Doctoral Start-up Foundation of Liaoning Province[2023-BS-011] ; Shenyang National Laboratory for Mate-rials Science |
| WOS研究方向 | Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001360070400001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | Doctoral Start-up Foundation of Liaoning Province ; Shenyang National Laboratory for Mate-rials Science |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Lei, Y. B. |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China 3.Liaoning Acad Mat, Inst Mat Plainificat, Shenyang 110167, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lei, Y. B.,Niu, Z. M.,Gao, B.,et al. Martensite instability induced surface hardening on gradient nano-structured 316L stainless steel[J]. VACUUM,2025,231:5. |
| APA | Lei, Y. B.,Niu, Z. M.,Gao, B.,&Sun, Y. T..(2025).Martensite instability induced surface hardening on gradient nano-structured 316L stainless steel.VACUUM,231,5. |
| MLA | Lei, Y. B.,et al."Martensite instability induced surface hardening on gradient nano-structured 316L stainless steel".VACUUM 231(2025):5. |
入库方式： OAI收割
来源：金属研究所
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