Enhanced pitting resistance for high-entropy alloys by precipitating nano-size d L12-strengthene d phase
文献类型：期刊论文
| 作者 | Li, Tianrun1,2; Wang, Debin1,2; Cui, Jingping1; Wang, Qi1; Zhang, Suode1; Wang, Jianqiang1 |
| 刊名 | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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| 出版日期 | 2025-02-10 |
| 卷号 | 208页码:53-66 |
| 关键词 | High entropy alloys Precipitation Passive films Pitting corrosion |
| ISSN号 | 1005-0302 |
| DOI | 10.1016/j.jmst.2024.04.051 |
| 通讯作者 | Zhang, Suode(sdzhang@imr.ac.cn) ; Wang, Jianqiang(jqwang@imr.ac.cn) |
| 英文摘要 | Precipitation-strengthened HEAs exhibit outstanding integration of strength and toughness at ambient temperature. Nevertheless, precipitates generally reduce the localized corrosion resistance in aggressive solution environments. To solve this problem, a strategy of introducing nano-sized L12 precipitates in CoCrFeNiAlTi HEAs has been proposed in this work. Results demonstrate the pitting corrosion potential can be elevated from 258 mVSCE to 603 mVSCE by increasing the precipitate content to 38 wt.%. Such an improvement in localized corrosion resistance can be attributed to two aspects. Firstly, L12 precipitates tend to be dissolved during the corrosion process, which promotes the heterogeneous nucleation of protective Cr2 O3 due to the rapid deposition of oxides/hydroxides of Al/Ti, and improves the passive film stability due to the Cr-rich FCC matrix. Secondly, the dissolution kinetic inside the pits can be suppressed on account of the enrichment of Cr element in the FCC matrix, thus inhibiting the pitting growth. In summary, the current work not only reveals the mechanisms of the nano-sized L12 precipitates upon the corrosion behavior, but also provides a strategy for designing corrosion-resistant HEA. (c) 2024 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology. |
| 资助项目 | National Natural Science Foundation of China[U1908219] ; National Natural Science Foundation of China[52171163] ; Key Research Program of the Chinese Academy of Sciences[ZDRW-CN-2021-2- 2] ; Applied Basic Research Program of Liaoning Province[2022JH2/10130 0 0 05] ; Central Guidance for Local Science and Technology Development Funds of Liaoning Province[2023JH6/100100016] |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001247644300001 |
| 出版者 | JOURNAL MATER SCI TECHNOL |
| 资助机构 | National Natural Science Foundation of China ; Key Research Program of the Chinese Academy of Sciences ; Applied Basic Research Program of Liaoning Province ; Central Guidance for Local Science and Technology Development Funds of Liaoning Province |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Zhang, Suode; Wang, Jianqiang |
| 作者单位 | 1.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Tianrun,Wang, Debin,Cui, Jingping,et al. Enhanced pitting resistance for high-entropy alloys by precipitating nano-size d L12-strengthene d phase[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2025,208:53-66. |
| APA | Li, Tianrun,Wang, Debin,Cui, Jingping,Wang, Qi,Zhang, Suode,&Wang, Jianqiang.(2025).Enhanced pitting resistance for high-entropy alloys by precipitating nano-size d L12-strengthene d phase.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,208,53-66. |
| MLA | Li, Tianrun,et al."Enhanced pitting resistance for high-entropy alloys by precipitating nano-size d L12-strengthene d phase".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 208(2025):53-66. |
入库方式： OAI收割
来源：金属研究所
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