Simultaneously increasing mechanical and corrosion properties in CoCrFeNiCu high entropy alloy via friction stir processing with an improved hemispherical convex tool
文献类型：期刊论文
| 作者 | Li, N.1,3; Zhang, H.1,2,3; Wu, L. H.1,2,3; Li, Z. K.1; Fu, H. M.1; Ni, D. R.1,3; Xue, P.1,2,3; Liu, F. C.1; Xiao, B. L.1,3; Ma, Z. Y.1,3 |
| 刊名 | MATERIALS CHARACTERIZATION
 |
| 出版日期 | 2023-09-01 |
| 卷号 | 203页码:13 |
| 关键词 | Friction stir processing High entropy alloy Microstructure Mechanical properties Corrosion resistance |
| ISSN号 | 1044-5803 |
| DOI | 10.1016/j.matchar.2023.113143 |
| 通讯作者 | Wu, L. H.(lhwu@imr.ac.cn) ; Ni, D. R.(drni@imr.ac.cn) |
| 英文摘要 | It generally shows the trade-off for the mechanical properties and corrosion resistance of high entropy alloys (HEAs). In this study, friction stir processing (FSP) with an improved hemispherical convex tool was applied to process the as-cast CoCrFeNiCu HEA, which simultaneously increased the mechanical properties and corrosion resistance of the HEA by a large degree. After FSP, the grains were significantly refined from 6 & mu;m to-300 nm, with 91% of high angle grain boundaries and 18% of nanometer twins, leading to a remarkable increase in the yield strength from-194 MPa to-935 MPa. More importantly, the FSP HEA showed an excellent strength ductility synergy with yield strength of-695 MPa and a uniform tensile elongation of-17.5% after annealing, which was mainly attributed to the comprehensive role of equiaxed ultrafine microstructure, second phase and the high fraction of annealing twins (27%). In addition, the FSP HEA showed higher corrosion resistance than the base material by electrochemical test, which was mainly attributed to the improvement of the self corrosion potential and the stability of the passivation film caused by the mitigation of Cu segregation and grain refinement. This study provides a new way to simultaneously increase the mechanical properties and corrosion resistance in HEAs. |
| 资助项目 | National Natural Science Foundation of China[52271043] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2021193] ; Liaon-ing Provincial Natural Science Foundation[2021-YQ-01] ; Liaon-ing Provincial Natural Science Foundation[2021-MS-007] ; LiaoNing Revitalization Talents Program[XLYC2002099] |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001046505700001 |
| 出版者 | ELSEVIER SCIENCE INC |
| 资助机构 | National Natural Science Foundation of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Liaon-ing Provincial Natural Science Foundation ; LiaoNing Revitalization Talents Program |
| 源URL | [http://ir.imr.ac.cn/handle/321006/178813]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Wu, L. H.; Ni, D. R. |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shi changxu innovat Ctr Adv Mat, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, 72 Wenhua Rd, Shenyang 110016, Peoples R China 3.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, N.,Zhang, H.,Wu, L. H.,et al. Simultaneously increasing mechanical and corrosion properties in CoCrFeNiCu high entropy alloy via friction stir processing with an improved hemispherical convex tool[J]. MATERIALS CHARACTERIZATION,2023,203:13. |
| APA | Li, N..,Zhang, H..,Wu, L. H..,Li, Z. K..,Fu, H. M..,...&Ma, Z. Y..(2023).Simultaneously increasing mechanical and corrosion properties in CoCrFeNiCu high entropy alloy via friction stir processing with an improved hemispherical convex tool.MATERIALS CHARACTERIZATION,203,13. |
| MLA | Li, N.,et al."Simultaneously increasing mechanical and corrosion properties in CoCrFeNiCu high entropy alloy via friction stir processing with an improved hemispherical convex tool".MATERIALS CHARACTERIZATION 203(2023):13. |
入库方式： OAI收割
来源：金属研究所
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