Numerical simulation of cellular automaton in vacuum arc remelting during the solidification process
In this paper, the finite element and cellular automaton coupling (CAFE) model is used to simulate the solidification process of a large ingot during vacuum consumable arc melting (VAR). The effects of melting temperature, melting rate, and mold cooling coefficient on temperature field distribution...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | Materials Research Express |
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| Online Access: | https://doi.org/10.1088/2053-1591/acce92 |
| _version_ | 1797746463204179968 |
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| author | Mengmeng Zhu Gaolin Lv Xiangming Li Xu Zhou |
| author_facet | Mengmeng Zhu Gaolin Lv Xiangming Li Xu Zhou |
| author_sort | Mengmeng Zhu |
| collection | DOAJ |
| description | In this paper, the finite element and cellular automaton coupling (CAFE) model is used to simulate the solidification process of a large ingot during vacuum consumable arc melting (VAR). The effects of melting temperature, melting rate, and mold cooling coefficient on temperature field distribution and solidification structure were studied by simulation. The results show that the microstructure predicted by the numerical method is consistent with the experimental results. As the melting temperature increases from 1500 °C to 1800 °C, the depth of the molten pool increases from 14 mm to 24 mm, the width of the mushy zone decreases from 10 mm to 9 mm, and the average radius of the grains increases from 584.3 μ m to 679 μ m. With the increase in melting rate from 6 kg min ^−1 to 12 kg min ^−1 , the maximum depth of the molten pool increases from 4 mm to 32 mm, the width of the mushy zone increases from 8 mm to 13 mm, and the average grain radius decreases from 943 μ m to 497 μ m. As the cooling coefficient of the mold increases from 1000 W m ^−2 ·K ^−1 to 5000 W m ^−2 ·K ^−1 , the depth of the molten pool decreases from 16.7 mm to 12 mm, the width of the mushy zone decreases from 7.3 mm to 5.9 mm, and the average radius of the grains increases from 630 μ m to 1303.5 μ m. |
| first_indexed | 2024-03-12T15:37:11Z |
| format | Article |
| id | doaj.art-42958ad409be4c38a201378b9e4fbbd6 |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:37:11Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-42958ad409be4c38a201378b9e4fbbd62023-08-09T16:08:43ZengIOP PublishingMaterials Research Express2053-15912023-01-0110404651810.1088/2053-1591/acce92Numerical simulation of cellular automaton in vacuum arc remelting during the solidification processMengmeng Zhu0Gaolin Lv1Xiangming Li2https://orcid.org/0000-0002-1784-2592Xu Zhou3School of Materials Science and Engineering, Kunming University of Science and Technology , Kunming 650093, People’s Republic of China; State Local Joint Engineering Laboratory of Advanced Solidification Forming and Equipment Technology of Metal, Kunming University of Science and Technology, Kunming 650093, People’s Republic of ChinaSchool of Materials Science and Engineering, Kunming University of Science and Technology , Kunming 650093, People’s Republic of China; State Local Joint Engineering Laboratory of Advanced Solidification Forming and Equipment Technology of Metal, Kunming University of Science and Technology, Kunming 650093, People’s Republic of ChinaSchool of Materials Science and Engineering, Kunming University of Science and Technology , Kunming 650093, People’s Republic of China; State Local Joint Engineering Laboratory of Advanced Solidification Forming and Equipment Technology of Metal, Kunming University of Science and Technology, Kunming 650093, People’s Republic of ChinaSchool of Materials Science and Engineering, Kunming University of Science and Technology , Kunming 650093, People’s Republic of China; State Local Joint Engineering Laboratory of Advanced Solidification Forming and Equipment Technology of Metal, Kunming University of Science and Technology, Kunming 650093, People’s Republic of ChinaIn this paper, the finite element and cellular automaton coupling (CAFE) model is used to simulate the solidification process of a large ingot during vacuum consumable arc melting (VAR). The effects of melting temperature, melting rate, and mold cooling coefficient on temperature field distribution and solidification structure were studied by simulation. The results show that the microstructure predicted by the numerical method is consistent with the experimental results. As the melting temperature increases from 1500 °C to 1800 °C, the depth of the molten pool increases from 14 mm to 24 mm, the width of the mushy zone decreases from 10 mm to 9 mm, and the average radius of the grains increases from 584.3 μ m to 679 μ m. With the increase in melting rate from 6 kg min ^−1 to 12 kg min ^−1 , the maximum depth of the molten pool increases from 4 mm to 32 mm, the width of the mushy zone increases from 8 mm to 13 mm, and the average grain radius decreases from 943 μ m to 497 μ m. As the cooling coefficient of the mold increases from 1000 W m ^−2 ·K ^−1 to 5000 W m ^−2 ·K ^−1 , the depth of the molten pool decreases from 16.7 mm to 12 mm, the width of the mushy zone decreases from 7.3 mm to 5.9 mm, and the average radius of the grains increases from 630 μ m to 1303.5 μ m.https://doi.org/10.1088/2053-1591/acce92vacuum arc remeltingmelting pool shapemushy zoneequiaxed crystalscolumnar crystals |
| spellingShingle | Mengmeng Zhu Gaolin Lv Xiangming Li Xu Zhou Numerical simulation of cellular automaton in vacuum arc remelting during the solidification process Materials Research Express vacuum arc remelting melting pool shape mushy zone equiaxed crystals columnar crystals |
| title | Numerical simulation of cellular automaton in vacuum arc remelting during the solidification process |
| title_full | Numerical simulation of cellular automaton in vacuum arc remelting during the solidification process |
| title_fullStr | Numerical simulation of cellular automaton in vacuum arc remelting during the solidification process |
| title_full_unstemmed | Numerical simulation of cellular automaton in vacuum arc remelting during the solidification process |
| title_short | Numerical simulation of cellular automaton in vacuum arc remelting during the solidification process |
| title_sort | numerical simulation of cellular automaton in vacuum arc remelting during the solidification process |
| topic | vacuum arc remelting melting pool shape mushy zone equiaxed crystals columnar crystals |
| url | https://doi.org/10.1088/2053-1591/acce92 |
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