Quantitative influence of solidification path on solute micro-segregation and inclusion precipitation in the solidification process of rail steel
A solute redistribution model, which takes the phase transformation and MnS precipitation during the solidification of rail steel into consideration, was established. The influence of solidification path on solute micro-segregation and inclusion precipitation was quantitatively analyzed. Furthermore...
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Elsevier
2025-01-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424028990 |
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| author | Xinliang Gao Wenyue Ba Chenyang Wang Zhuangzhuang Zhang Yinlong Wang Tengfei Li Zhinan Yang Fucheng Zhang |
| author_facet | Xinliang Gao Wenyue Ba Chenyang Wang Zhuangzhuang Zhang Yinlong Wang Tengfei Li Zhinan Yang Fucheng Zhang |
| author_sort | Xinliang Gao |
| collection | DOAJ |
| description | A solute redistribution model, which takes the phase transformation and MnS precipitation during the solidification of rail steel into consideration, was established. The influence of solidification path on solute micro-segregation and inclusion precipitation was quantitatively analyzed. Furthermore, the effects of MnS inclusion precipitation, equilibrium distribution coefficient (ki), and back-diffusion coefficient (βi) on solute micro-segregation were investigated. The results indicate that the solidification path significantly influences solute micro-segregation and MnS precipitation in the solidification process. When the carbon content ranges from 0.018% to 0.054%, the peritectic transformation occurs at the end of solidification, and the carbon content significantly affects MnS inclusion precipitation and solute micro-segregation. The carbon content influences solute redistribution through the changes in solidification temperature and phase composition, resulting in the variations in ki and βi, which in turn affects solute micro-segregation. The impact of ki on solute micro-segregation is significantly influenced by phase composition, while βi is affected by both temperature and phase composition. There is a competitive relationship between ki and βi concerning solute micro-segregation. The research findings provide a foundation for further elucidating the laws of solute redistribution during the solidification of molten steel, thereby effectively improving the quality of rail steel casting bloom. |
| format | Article |
| id | doaj-art-6c4fe14d3e6b428aafe5949ece01ec01 |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-6c4fe14d3e6b428aafe5949ece01ec012025-01-19T06:25:26ZengElsevierJournal of Materials Research and Technology2238-78542025-01-0134959971Quantitative influence of solidification path on solute micro-segregation and inclusion precipitation in the solidification process of rail steelXinliang Gao0Wenyue Ba1Chenyang Wang2Zhuangzhuang Zhang3Yinlong Wang4Tengfei Li5Zhinan Yang6Fucheng Zhang7National Engineering Research Center for Equipment and Technology of Cold Strip Rolling, College of Mechanical Engineering, Yanshan University, Qinhuangdao, 066004, ChinaSchool of Metallurgy, Northeastern University, Shenyang, 110816, China; Corresponding author. School of Metallurgy, Northeastern University, Shenyang, 110816, China.National Engineering Research Center for Equipment and Technology of Cold Strip Rolling, College of Mechanical Engineering, Yanshan University, Qinhuangdao, 066004, ChinaNational Engineering Research Center for Equipment and Technology of Cold Strip Rolling, College of Mechanical Engineering, Yanshan University, Qinhuangdao, 066004, ChinaNational Engineering Research Center for Equipment and Technology of Cold Strip Rolling, College of Mechanical Engineering, Yanshan University, Qinhuangdao, 066004, ChinaNational Engineering Research Center for Equipment and Technology of Cold Strip Rolling, College of Mechanical Engineering, Yanshan University, Qinhuangdao, 066004, ChinaHebei Iron and Steel Laboratory, North China University of Science and Technology, Tangshan, 063210, China; Corresponding author.College of Metallurgy and Energy, North China University of Science and Technology, Tangshan, 063210, ChinaA solute redistribution model, which takes the phase transformation and MnS precipitation during the solidification of rail steel into consideration, was established. The influence of solidification path on solute micro-segregation and inclusion precipitation was quantitatively analyzed. Furthermore, the effects of MnS inclusion precipitation, equilibrium distribution coefficient (ki), and back-diffusion coefficient (βi) on solute micro-segregation were investigated. The results indicate that the solidification path significantly influences solute micro-segregation and MnS precipitation in the solidification process. When the carbon content ranges from 0.018% to 0.054%, the peritectic transformation occurs at the end of solidification, and the carbon content significantly affects MnS inclusion precipitation and solute micro-segregation. The carbon content influences solute redistribution through the changes in solidification temperature and phase composition, resulting in the variations in ki and βi, which in turn affects solute micro-segregation. The impact of ki on solute micro-segregation is significantly influenced by phase composition, while βi is affected by both temperature and phase composition. There is a competitive relationship between ki and βi concerning solute micro-segregation. The research findings provide a foundation for further elucidating the laws of solute redistribution during the solidification of molten steel, thereby effectively improving the quality of rail steel casting bloom.http://www.sciencedirect.com/science/article/pii/S2238785424028990Solidification pathSolute micro-segregationInclusion precipitationRail steel |
| spellingShingle | Xinliang Gao Wenyue Ba Chenyang Wang Zhuangzhuang Zhang Yinlong Wang Tengfei Li Zhinan Yang Fucheng Zhang Quantitative influence of solidification path on solute micro-segregation and inclusion precipitation in the solidification process of rail steel Journal of Materials Research and Technology Solidification path Solute micro-segregation Inclusion precipitation Rail steel |
| title | Quantitative influence of solidification path on solute micro-segregation and inclusion precipitation in the solidification process of rail steel |
| title_full | Quantitative influence of solidification path on solute micro-segregation and inclusion precipitation in the solidification process of rail steel |
| title_fullStr | Quantitative influence of solidification path on solute micro-segregation and inclusion precipitation in the solidification process of rail steel |
| title_full_unstemmed | Quantitative influence of solidification path on solute micro-segregation and inclusion precipitation in the solidification process of rail steel |
| title_short | Quantitative influence of solidification path on solute micro-segregation and inclusion precipitation in the solidification process of rail steel |
| title_sort | quantitative influence of solidification path on solute micro segregation and inclusion precipitation in the solidification process of rail steel |
| topic | Solidification path Solute micro-segregation Inclusion precipitation Rail steel |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424028990 |
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