Cross-Scale Simulation Research on the Macro/Microstructure of TC4 Alloy Wire Laser Additive Manufacturing
A cross-scale model of macro-micro coupling is established for the wire laser additive manufacturing process of the TC4 titanium alloy. The model reproduces the dynamic evolution process of the molten pool shape, reveals the temperature change law in the molten pool, and simulates the microstructure...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-05-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/12/6/934 |
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| author | Yongbiao Wang Cong Chen Xintian Liu Jiaxin Wang Yang Zhang Weimin Long Shaokang Guan Liming Peng |
| author_facet | Yongbiao Wang Cong Chen Xintian Liu Jiaxin Wang Yang Zhang Weimin Long Shaokang Guan Liming Peng |
| author_sort | Yongbiao Wang |
| collection | DOAJ |
| description | A cross-scale model of macro-micro coupling is established for the wire laser additive manufacturing process of the TC4 titanium alloy. The model reproduces the dynamic evolution process of the molten pool shape, reveals the temperature change law in the molten pool, and simulates the microstructure and morphology of different regions of the molten pool. Finally, the model is used to quantitatively analyze the effects of process parameters (laser power, scanning speed) on the growth morphology of dendrites during solidification. The research shows that with the increase in laser power and the decrease in scanning speed, the peak temperature of the molten pool increases rapidly, and the size of the molten pool increases gradually. When the laser scanning speed is greater than 5 mm/s, the molten pool length decreases significantly. After solidification, an asymmetrically distributed equiaxed grain structure is formed at the upper part of the molten pool, the bottom of the molten pool is made up of slender columnar crystals, and the columnar-to-equiaxed transition (CET) occurs in the middle of the molten pool. With the decrease in laser power and the increase in scanning speed, the growth rate of dendrites becomes faster, the arm spacing and the overall morphology of dendrites become smaller, and the arrangement of columnar crystals have a tighter microstructure. |
| first_indexed | 2024-03-09T23:04:29Z |
| format | Article |
| id | doaj.art-f1a89701929648899dcaae09fa36e454 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-09T23:04:29Z |
| publishDate | 2022-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-f1a89701929648899dcaae09fa36e4542023-11-23T17:57:31ZengMDPI AGMetals2075-47012022-05-0112693410.3390/met12060934Cross-Scale Simulation Research on the Macro/Microstructure of TC4 Alloy Wire Laser Additive ManufacturingYongbiao Wang0Cong Chen1Xintian Liu2Jiaxin Wang3Yang Zhang4Weimin Long5Shaokang Guan6Liming Peng7Henan Key Laboratory of Intelligent Manufacturing of Mechanical Equipment, Zhengzhou University of Light Industry, Zhengzhou 450002, ChinaHenan Key Laboratory of Intelligent Manufacturing of Mechanical Equipment, Zhengzhou University of Light Industry, Zhengzhou 450002, ChinaHenan Key Laboratory of Intelligent Manufacturing of Mechanical Equipment, Zhengzhou University of Light Industry, Zhengzhou 450002, ChinaHenan Key Laboratory of Intelligent Manufacturing of Mechanical Equipment, Zhengzhou University of Light Industry, Zhengzhou 450002, ChinaHenan Key Laboratory of Intelligent Manufacturing of Mechanical Equipment, Zhengzhou University of Light Industry, Zhengzhou 450002, ChinaInnovation Academy of Intelligent Equipment (Ningbo) Co., Ltd., Ningbo 315700, ChinaThe College of Materials Science and Technology, Zhengzhou University, Zhengzhou 450066, ChinaNational Engineering Research Center of Light Alloy Net Forming and State Key Laboratory of Metal Matrix Composite, Shanghai Jiao Tong University, Shanghai 200240, ChinaA cross-scale model of macro-micro coupling is established for the wire laser additive manufacturing process of the TC4 titanium alloy. The model reproduces the dynamic evolution process of the molten pool shape, reveals the temperature change law in the molten pool, and simulates the microstructure and morphology of different regions of the molten pool. Finally, the model is used to quantitatively analyze the effects of process parameters (laser power, scanning speed) on the growth morphology of dendrites during solidification. The research shows that with the increase in laser power and the decrease in scanning speed, the peak temperature of the molten pool increases rapidly, and the size of the molten pool increases gradually. When the laser scanning speed is greater than 5 mm/s, the molten pool length decreases significantly. After solidification, an asymmetrically distributed equiaxed grain structure is formed at the upper part of the molten pool, the bottom of the molten pool is made up of slender columnar crystals, and the columnar-to-equiaxed transition (CET) occurs in the middle of the molten pool. With the decrease in laser power and the increase in scanning speed, the growth rate of dendrites becomes faster, the arm spacing and the overall morphology of dendrites become smaller, and the arrangement of columnar crystals have a tighter microstructure.https://www.mdpi.com/2075-4701/12/6/934TC4 alloywire laser additive manufacturingmacro-microstructuresimulation across scales |
| spellingShingle | Yongbiao Wang Cong Chen Xintian Liu Jiaxin Wang Yang Zhang Weimin Long Shaokang Guan Liming Peng Cross-Scale Simulation Research on the Macro/Microstructure of TC4 Alloy Wire Laser Additive Manufacturing Metals TC4 alloy wire laser additive manufacturing macro-microstructure simulation across scales |
| title | Cross-Scale Simulation Research on the Macro/Microstructure of TC4 Alloy Wire Laser Additive Manufacturing |
| title_full | Cross-Scale Simulation Research on the Macro/Microstructure of TC4 Alloy Wire Laser Additive Manufacturing |
| title_fullStr | Cross-Scale Simulation Research on the Macro/Microstructure of TC4 Alloy Wire Laser Additive Manufacturing |
| title_full_unstemmed | Cross-Scale Simulation Research on the Macro/Microstructure of TC4 Alloy Wire Laser Additive Manufacturing |
| title_short | Cross-Scale Simulation Research on the Macro/Microstructure of TC4 Alloy Wire Laser Additive Manufacturing |
| title_sort | cross scale simulation research on the macro microstructure of tc4 alloy wire laser additive manufacturing |
| topic | TC4 alloy wire laser additive manufacturing macro-microstructure simulation across scales |
| url | https://www.mdpi.com/2075-4701/12/6/934 |
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