Numerical simulation of GTAW for ZW61 magnesium alloy thin plates: Coupling the finite element method with the cellular automata method
ZW61 magnesium alloy has a wide range of application prospects as a lightweight green engineering material. In this paper, the temperature field and microstructure of gas tungsten arc welding (GTAW) for ZW61 magnesium alloy are simulated by the finite element method and the cellular automata (CA) me...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-11-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424024797 |
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| author | Qichi Le Weiyang Zhou Qiyu Liao Dazhi Zhao Ye Shi |
| author_facet | Qichi Le Weiyang Zhou Qiyu Liao Dazhi Zhao Ye Shi |
| author_sort | Qichi Le |
| collection | DOAJ |
| description | ZW61 magnesium alloy has a wide range of application prospects as a lightweight green engineering material. In this paper, the temperature field and microstructure of gas tungsten arc welding (GTAW) for ZW61 magnesium alloy are simulated by the finite element method and the cellular automata (CA) method. The results show that the microstructure in the center of the fusion zone (FZ) is all equiaxed grains affected by compositional supercooling. While at the edge of the molten pool, the crystals produced by associative crystallization evolve into columnar grains after undergoing competitive growth. Furthermore, the temperature field of the molten pool alters as the welding heat input increases. Especially, the temperature gradient behind the molten pool slows down. Thus, the cooling rate during solidification of the molten pool decreases, increasing the size of the weld microstructure. Meanwhile, solute concentration plays an essential role in the weld microstructure evolution. The rise in Zn content both refines the size of the equiaxed grains and inhibits the growth of the columnar crystals. Moreover, the experimental results of the thermal cycling curves and the FZ microstructure exhibit minimal error with the simulation results, verifying the reliability of the model. |
| format | Article |
| id | doaj-art-4f904b0c07274292b0acb5678c321ee0 |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-4f904b0c07274292b0acb5678c321ee02024-12-26T08:54:59ZengElsevierJournal of Materials Research and Technology2238-78542024-11-013356925707Numerical simulation of GTAW for ZW61 magnesium alloy thin plates: Coupling the finite element method with the cellular automata methodQichi Le0Weiyang Zhou1Qiyu Liao2Dazhi Zhao3Ye Shi4Key Lab of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang, 110819, PR China; Corresponding author.Key Lab of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang, 110819, PR ChinaSchool of Materials Science and Engineering, Northeastern University, Shenyang, 110819, PR China; Key Laboratory of Lightweight Structural Materials, Liaoning Province, Northeastern University, Shenyang, 110819, PR ChinaKey Lab of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang, 110819, PR China; School of Materials Science and Engineering, Northeastern University, Shenyang, 110819, PR ChinaKey Lab of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang, 110819, PR ChinaZW61 magnesium alloy has a wide range of application prospects as a lightweight green engineering material. In this paper, the temperature field and microstructure of gas tungsten arc welding (GTAW) for ZW61 magnesium alloy are simulated by the finite element method and the cellular automata (CA) method. The results show that the microstructure in the center of the fusion zone (FZ) is all equiaxed grains affected by compositional supercooling. While at the edge of the molten pool, the crystals produced by associative crystallization evolve into columnar grains after undergoing competitive growth. Furthermore, the temperature field of the molten pool alters as the welding heat input increases. Especially, the temperature gradient behind the molten pool slows down. Thus, the cooling rate during solidification of the molten pool decreases, increasing the size of the weld microstructure. Meanwhile, solute concentration plays an essential role in the weld microstructure evolution. The rise in Zn content both refines the size of the equiaxed grains and inhibits the growth of the columnar crystals. Moreover, the experimental results of the thermal cycling curves and the FZ microstructure exhibit minimal error with the simulation results, verifying the reliability of the model.http://www.sciencedirect.com/science/article/pii/S2238785424024797Numerical simulationMagnesiumGTAWMicrostructureTemperature |
| spellingShingle | Qichi Le Weiyang Zhou Qiyu Liao Dazhi Zhao Ye Shi Numerical simulation of GTAW for ZW61 magnesium alloy thin plates: Coupling the finite element method with the cellular automata method Journal of Materials Research and Technology Numerical simulation Magnesium GTAW Microstructure Temperature |
| title | Numerical simulation of GTAW for ZW61 magnesium alloy thin plates: Coupling the finite element method with the cellular automata method |
| title_full | Numerical simulation of GTAW for ZW61 magnesium alloy thin plates: Coupling the finite element method with the cellular automata method |
| title_fullStr | Numerical simulation of GTAW for ZW61 magnesium alloy thin plates: Coupling the finite element method with the cellular automata method |
| title_full_unstemmed | Numerical simulation of GTAW for ZW61 magnesium alloy thin plates: Coupling the finite element method with the cellular automata method |
| title_short | Numerical simulation of GTAW for ZW61 magnesium alloy thin plates: Coupling the finite element method with the cellular automata method |
| title_sort | numerical simulation of gtaw for zw61 magnesium alloy thin plates coupling the finite element method with the cellular automata method |
| topic | Numerical simulation Magnesium GTAW Microstructure Temperature |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424024797 |
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