An Analysis of the Mapping Relationship between Microstructure and Solidification Parameters during Aluminum Fused Coating
Metal fused-coating technology has the advantages of both low cost and high efficiency and is a new additive manufacturing technology in recent years. The previous studies were mainly aimed at the optimization of process parameters and the control of the surface quality of parts, while there were fe...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-09-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/13/9/1594 |
| _version_ | 1827725339406630912 |
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| author | Guangxi Zhao Jialei Zhang Xianhai Yang |
| author_facet | Guangxi Zhao Jialei Zhang Xianhai Yang |
| author_sort | Guangxi Zhao |
| collection | DOAJ |
| description | Metal fused-coating technology has the advantages of both low cost and high efficiency and is a new additive manufacturing technology in recent years. The previous studies were mainly aimed at the optimization of process parameters and the control of the surface quality of parts, while there were few theoretical analyses on the microstructure morphology after solidification. A three-dimensional transient numerical model was established to calculate temperature gradient and solidification rate, considering the changes in material physical properties with temperature during the calculation process. The temperature gradient on the substrate surface is jointly affected by the melt flowing out of the nozzle and the welding arc. It was found that the solidification front of the aluminum alloy was in an unstable state during the coating process. When the value of G/R decreases, the microstructure of the solidification interface gradually changes from columnar crystals to columnar dendrites and equiaxial crystals. The microstructure at the bottom of both the molten pool and coating layer is columnar crystal, while the microstructure at the upper part is equiaxed crystal. |
| first_indexed | 2024-03-10T22:27:57Z |
| format | Article |
| id | doaj.art-6a78e0b1406e493caedbf61c45d38b42 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T22:27:57Z |
| publishDate | 2023-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-6a78e0b1406e493caedbf61c45d38b422023-11-19T11:57:08ZengMDPI AGMetals2075-47012023-09-01139159410.3390/met13091594An Analysis of the Mapping Relationship between Microstructure and Solidification Parameters during Aluminum Fused CoatingGuangxi Zhao0Jialei Zhang1Xianhai Yang2School of Mechanical Engineering, Shandong University of Technology, Zibo 255000, ChinaSchool of Mechanical Engineering, Shandong University of Technology, Zibo 255000, ChinaSchool of Mechanical Engineering, Shandong University of Technology, Zibo 255000, ChinaMetal fused-coating technology has the advantages of both low cost and high efficiency and is a new additive manufacturing technology in recent years. The previous studies were mainly aimed at the optimization of process parameters and the control of the surface quality of parts, while there were few theoretical analyses on the microstructure morphology after solidification. A three-dimensional transient numerical model was established to calculate temperature gradient and solidification rate, considering the changes in material physical properties with temperature during the calculation process. The temperature gradient on the substrate surface is jointly affected by the melt flowing out of the nozzle and the welding arc. It was found that the solidification front of the aluminum alloy was in an unstable state during the coating process. When the value of G/R decreases, the microstructure of the solidification interface gradually changes from columnar crystals to columnar dendrites and equiaxial crystals. The microstructure at the bottom of both the molten pool and coating layer is columnar crystal, while the microstructure at the upper part is equiaxed crystal.https://www.mdpi.com/2075-4701/13/9/1594metal fused coatingadditive manufacturingmicrostructure2024 aluminum |
| spellingShingle | Guangxi Zhao Jialei Zhang Xianhai Yang An Analysis of the Mapping Relationship between Microstructure and Solidification Parameters during Aluminum Fused Coating Metals metal fused coating additive manufacturing microstructure 2024 aluminum |
| title | An Analysis of the Mapping Relationship between Microstructure and Solidification Parameters during Aluminum Fused Coating |
| title_full | An Analysis of the Mapping Relationship between Microstructure and Solidification Parameters during Aluminum Fused Coating |
| title_fullStr | An Analysis of the Mapping Relationship between Microstructure and Solidification Parameters during Aluminum Fused Coating |
| title_full_unstemmed | An Analysis of the Mapping Relationship between Microstructure and Solidification Parameters during Aluminum Fused Coating |
| title_short | An Analysis of the Mapping Relationship between Microstructure and Solidification Parameters during Aluminum Fused Coating |
| title_sort | analysis of the mapping relationship between microstructure and solidification parameters during aluminum fused coating |
| topic | metal fused coating additive manufacturing microstructure 2024 aluminum |
| url | https://www.mdpi.com/2075-4701/13/9/1594 |
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