Effect of Vertical High Magnetic Field on the Morphology of Solid-Liquid Interface during the Directional Solidification of Zn-2wt.%Bi Immiscible Alloy
The morphology of the solid-liquid (S-L) interface is crucial for the directionally solidified microstructures of various alloys. This paper investigates the effect of vertical high magnetic field (VHMF) on the morphology evolution of the S-L interface and the solidified microstructure during the di...
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MDPI AG
2022-05-01
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| Online Access: | https://www.mdpi.com/2075-4701/12/5/875 |
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| author | Bangfei Zhou Xianghui Guo Wenhao Lin Ying Liu Yifeng Guo Tianxiang Zheng Yunbo Zhong Hui Wang Qiuliang Wang |
| author_facet | Bangfei Zhou Xianghui Guo Wenhao Lin Ying Liu Yifeng Guo Tianxiang Zheng Yunbo Zhong Hui Wang Qiuliang Wang |
| author_sort | Bangfei Zhou |
| collection | DOAJ |
| description | The morphology of the solid-liquid (S-L) interface is crucial for the directionally solidified microstructures of various alloys. This paper investigates the effect of vertical high magnetic field (VHMF) on the morphology evolution of the S-L interface and the solidified microstructure during the directional solidification of Zn-2wt.%Bi immiscible alloy. The results indicate that the morphology of the S-L interface is highly dependent on the VHMF, resulting in various solidified microstructures. When the growth rate was 1 μm/s, the aligned droplets were formed directly at the disturbed S-L interface under a 1 T VHMF. However, the stability of the S-L interface was improved to form a stable Bi-rich fiber under a 5 T VHMF. When the growth rate was 5 μm/s, the S-L interface was changed from cellular to dendritic to cellular again with increasing magnetic flux density. A theory regarding constitutional supercooling and efficient solute diffusion has been proposed to explain the S-L interface transition under the VHMF. The difference in the effective diffusion capacity of the solute originates from the thermoelectric magnetic effect and the magneto-hydrodynamic damping effect. The present work may initiate a new method to transform the solidified microstructures of immiscible alloys via an applied magnetic field during directional solidification. |
| first_indexed | 2024-03-10T03:24:54Z |
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| id | doaj.art-39cd1bcefa894ea48f281d704f1b8e9a |
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| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T03:24:54Z |
| publishDate | 2022-05-01 |
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| spelling | doaj.art-39cd1bcefa894ea48f281d704f1b8e9a2023-11-23T12:10:42ZengMDPI AGMetals2075-47012022-05-0112587510.3390/met12050875Effect of Vertical High Magnetic Field on the Morphology of Solid-Liquid Interface during the Directional Solidification of Zn-2wt.%Bi Immiscible AlloyBangfei Zhou0Xianghui Guo1Wenhao Lin2Ying Liu3Yifeng Guo4Tianxiang Zheng5Yunbo Zhong6Hui Wang7Qiuliang Wang8State Key Laboratory of Advanced Special Steel & Shanghai Key Laboratory of Advanced Ferrometallurgy & School of Materials Science and Engineering, Shanghai University, Shanghai 200444, ChinaState Key Laboratory of Advanced Special Steel & Shanghai Key Laboratory of Advanced Ferrometallurgy & School of Materials Science and Engineering, Shanghai University, Shanghai 200444, ChinaState Key Laboratory of Advanced Special Steel & Shanghai Key Laboratory of Advanced Ferrometallurgy & School of Materials Science and Engineering, Shanghai University, Shanghai 200444, ChinaState Key Laboratory of Advanced Special Steel & Shanghai Key Laboratory of Advanced Ferrometallurgy & School of Materials Science and Engineering, Shanghai University, Shanghai 200444, ChinaState Key Laboratory of Advanced Special Steel & Shanghai Key Laboratory of Advanced Ferrometallurgy & School of Materials Science and Engineering, Shanghai University, Shanghai 200444, ChinaState Key Laboratory of Advanced Special Steel & Shanghai Key Laboratory of Advanced Ferrometallurgy & School of Materials Science and Engineering, Shanghai University, Shanghai 200444, ChinaState Key Laboratory of Advanced Special Steel & Shanghai Key Laboratory of Advanced Ferrometallurgy & School of Materials Science and Engineering, Shanghai University, Shanghai 200444, ChinaInstitute of Electrical Engineering, Chinese Academy of Sciences Beijing, No. 6 Beiertiao, Zhongguancun, Beijing 100190, ChinaInstitute of Electrical Engineering, Chinese Academy of Sciences Beijing, No. 6 Beiertiao, Zhongguancun, Beijing 100190, ChinaThe morphology of the solid-liquid (S-L) interface is crucial for the directionally solidified microstructures of various alloys. This paper investigates the effect of vertical high magnetic field (VHMF) on the morphology evolution of the S-L interface and the solidified microstructure during the directional solidification of Zn-2wt.%Bi immiscible alloy. The results indicate that the morphology of the S-L interface is highly dependent on the VHMF, resulting in various solidified microstructures. When the growth rate was 1 μm/s, the aligned droplets were formed directly at the disturbed S-L interface under a 1 T VHMF. However, the stability of the S-L interface was improved to form a stable Bi-rich fiber under a 5 T VHMF. When the growth rate was 5 μm/s, the S-L interface was changed from cellular to dendritic to cellular again with increasing magnetic flux density. A theory regarding constitutional supercooling and efficient solute diffusion has been proposed to explain the S-L interface transition under the VHMF. The difference in the effective diffusion capacity of the solute originates from the thermoelectric magnetic effect and the magneto-hydrodynamic damping effect. The present work may initiate a new method to transform the solidified microstructures of immiscible alloys via an applied magnetic field during directional solidification.https://www.mdpi.com/2075-4701/12/5/875high magnetic fieldimmiscible alloysolid-liquid interfaceconstitutional supercooling |
| spellingShingle | Bangfei Zhou Xianghui Guo Wenhao Lin Ying Liu Yifeng Guo Tianxiang Zheng Yunbo Zhong Hui Wang Qiuliang Wang Effect of Vertical High Magnetic Field on the Morphology of Solid-Liquid Interface during the Directional Solidification of Zn-2wt.%Bi Immiscible Alloy Metals high magnetic field immiscible alloy solid-liquid interface constitutional supercooling |
| title | Effect of Vertical High Magnetic Field on the Morphology of Solid-Liquid Interface during the Directional Solidification of Zn-2wt.%Bi Immiscible Alloy |
| title_full | Effect of Vertical High Magnetic Field on the Morphology of Solid-Liquid Interface during the Directional Solidification of Zn-2wt.%Bi Immiscible Alloy |
| title_fullStr | Effect of Vertical High Magnetic Field on the Morphology of Solid-Liquid Interface during the Directional Solidification of Zn-2wt.%Bi Immiscible Alloy |
| title_full_unstemmed | Effect of Vertical High Magnetic Field on the Morphology of Solid-Liquid Interface during the Directional Solidification of Zn-2wt.%Bi Immiscible Alloy |
| title_short | Effect of Vertical High Magnetic Field on the Morphology of Solid-Liquid Interface during the Directional Solidification of Zn-2wt.%Bi Immiscible Alloy |
| title_sort | effect of vertical high magnetic field on the morphology of solid liquid interface during the directional solidification of zn 2wt bi immiscible alloy |
| topic | high magnetic field immiscible alloy solid-liquid interface constitutional supercooling |
| url | https://www.mdpi.com/2075-4701/12/5/875 |
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