Modeling Segregation of Fe-C Alloy in Solidification by Phase-Field Method Coupled with Thermodynamics
文献类型：期刊论文
| 作者 | Gong, Tong-Zhao2; Chen, Yun2; Hao, Wei-Ye1,2; Chen, Xing-Qiu2; Li, Dian-Zhong2 |
| 刊名 | METALS
 |
| 出版日期 | 2023-06-01 |
| 卷号 | 13期号:6页码:13 |
| 关键词 | phase-field method solidification Fe-C alloy solute segregation primary carbide |
| DOI | 10.3390/met13061148 |
| 通讯作者 | Li, Dian-Zhong(dzli@imr.ac.cn) |
| 英文摘要 | The primary carbide in high carbon chromium bearing steels, which arises from solute segregation during non-equilibrium solidification, is one of the key factors affecting the mechanical properties and performance of the related components. In this work, the effects of carbide forming element diffusion, primary austenite grain size, and the cooling rate on solute segregation and carbide precipitation during the solidification of an Fe-C binary alloy were studied by the phase-field method coupled with a thermodynamic database. It was clarified that increasing the ratio of solute diffusivity in solid and liquid, refining the grain size of primary austenite to lower than a critical value, and increasing the cooling rate can reduce the solute segregation and precipitation of primary carbide at late solidification. Two characteristic parameters were introduced to quantitatively evaluate the solute segregation during solidification including the phase fraction threshold of primary austenite when the solute concentration in liquid reaches the eutectic composition, and the maximum segregation ratio. Both parameters can be well-correlated to the ratio of solute diffusivity in solid and liquid, the grain size of primary austenite, and the cooling rate, which provides potential ways to control the solute segregation and precipitation of primary carbide in bearing steels. |
| 资助项目 | National Natural Science Foundation of China[52203301] ; China Postdoctoral Science Foundation[2021TQ0335] ; Young Talents Project of SYNL[2021000559] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDC04000000] |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001014740100001 |
| 出版者 | MDPI |
| 资助机构 | National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; Young Talents Project of SYNL ; Strategic Priority Research Program of the Chinese Academy of Sciences |
| 源URL | [http://ir.imr.ac.cn/handle/321006/178372]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Li, Dian-Zhong |
| 作者单位 | 1.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gong, Tong-Zhao,Chen, Yun,Hao, Wei-Ye,et al. Modeling Segregation of Fe-C Alloy in Solidification by Phase-Field Method Coupled with Thermodynamics[J]. METALS,2023,13(6):13. |
| APA | Gong, Tong-Zhao,Chen, Yun,Hao, Wei-Ye,Chen, Xing-Qiu,&Li, Dian-Zhong.(2023).Modeling Segregation of Fe-C Alloy in Solidification by Phase-Field Method Coupled with Thermodynamics.METALS,13(6),13. |
| MLA | Gong, Tong-Zhao,et al."Modeling Segregation of Fe-C Alloy in Solidification by Phase-Field Method Coupled with Thermodynamics".METALS 13.6(2023):13. |
入库方式： OAI收割
来源：金属研究所
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