2000W Blue laser directed energy deposition of AlSi7Mg: process parameters, molten pool characteristics, and appearance defects
Aluminium alloys are difficult to be manufactured by directed energy deposition (DED) with the widely used infrared laser because of the low absorptivity. A blue laser with a 450 nm wavelength has a significantly higher laser absorptivity in processing aluminium. Here, we developed a 2000 W blue las...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Taylor & Francis Group
2023-01-01
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| Series: | Virtual and Physical Prototyping |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/17452759.2022.2120405 |
| _version_ | 1797678661102469120 |
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| author | Zijue Tang Qianglong Wei Zhenyang Gao Huihui Yang An Wang Le Wan Cheng Luo Yi Wu Haowei Wang Hongze Wang |
| author_facet | Zijue Tang Qianglong Wei Zhenyang Gao Huihui Yang An Wang Le Wan Cheng Luo Yi Wu Haowei Wang Hongze Wang |
| author_sort | Zijue Tang |
| collection | DOAJ |
| description | Aluminium alloys are difficult to be manufactured by directed energy deposition (DED) with the widely used infrared laser because of the low absorptivity. A blue laser with a 450 nm wavelength has a significantly higher laser absorptivity in processing aluminium. Here, we developed a 2000 W blue laser directed energy deposition (BL-DED) system for additive manufacturing. In this system, a coaxial camera, a paraxial high-speed camera, and a paraxial infrared camera were simultaneously adopted to analyze the formation and evolution of molten pool characteristics. The relationships among the molten pool characteristics, depositing states, and appearance defects were built. We successfully printed the curved thin wall with good appearance quality by the manual in-situ control of appearance defects. This work demonstrated the advantages of the blue laser in DED of aluminium alloy, which could melt the powders under lower energy input conditions and result in a more stable deposition process. |
| first_indexed | 2024-03-11T23:03:09Z |
| format | Article |
| id | doaj.art-fee88a95e498407a9978526243cff370 |
| institution | Directory Open Access Journal |
| issn | 1745-2759 1745-2767 |
| language | English |
| last_indexed | 2024-03-11T23:03:09Z |
| publishDate | 2023-01-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Virtual and Physical Prototyping |
| spelling | doaj.art-fee88a95e498407a9978526243cff3702023-09-21T14:38:03ZengTaylor & Francis GroupVirtual and Physical Prototyping1745-27591745-27672023-01-0118110.1080/17452759.2022.212040521204052000W Blue laser directed energy deposition of AlSi7Mg: process parameters, molten pool characteristics, and appearance defectsZijue Tang0Qianglong Wei1Zhenyang Gao2Huihui Yang3An Wang4Le Wan5Cheng Luo6Yi Wu7Haowei Wang8Hongze Wang9State Key Laboratory of Metal Matrix CompositesState Key Laboratory of Metal Matrix CompositesState Key Laboratory of Metal Matrix CompositesState Key Laboratory of Metal Matrix CompositesState Key Laboratory of Metal Matrix CompositesState Key Laboratory of Metal Matrix CompositesShanghai Jiao Tong UniversityState Key Laboratory of Metal Matrix CompositesState Key Laboratory of Metal Matrix CompositesState Key Laboratory of Metal Matrix CompositesAluminium alloys are difficult to be manufactured by directed energy deposition (DED) with the widely used infrared laser because of the low absorptivity. A blue laser with a 450 nm wavelength has a significantly higher laser absorptivity in processing aluminium. Here, we developed a 2000 W blue laser directed energy deposition (BL-DED) system for additive manufacturing. In this system, a coaxial camera, a paraxial high-speed camera, and a paraxial infrared camera were simultaneously adopted to analyze the formation and evolution of molten pool characteristics. The relationships among the molten pool characteristics, depositing states, and appearance defects were built. We successfully printed the curved thin wall with good appearance quality by the manual in-situ control of appearance defects. This work demonstrated the advantages of the blue laser in DED of aluminium alloy, which could melt the powders under lower energy input conditions and result in a more stable deposition process.http://dx.doi.org/10.1080/17452759.2022.2120405directed energy depositionblue lasermolten poolin-situ monitoringappearance defect |
| spellingShingle | Zijue Tang Qianglong Wei Zhenyang Gao Huihui Yang An Wang Le Wan Cheng Luo Yi Wu Haowei Wang Hongze Wang 2000W Blue laser directed energy deposition of AlSi7Mg: process parameters, molten pool characteristics, and appearance defects Virtual and Physical Prototyping directed energy deposition blue laser molten pool in-situ monitoring appearance defect |
| title | 2000W Blue laser directed energy deposition of AlSi7Mg: process parameters, molten pool characteristics, and appearance defects |
| title_full | 2000W Blue laser directed energy deposition of AlSi7Mg: process parameters, molten pool characteristics, and appearance defects |
| title_fullStr | 2000W Blue laser directed energy deposition of AlSi7Mg: process parameters, molten pool characteristics, and appearance defects |
| title_full_unstemmed | 2000W Blue laser directed energy deposition of AlSi7Mg: process parameters, molten pool characteristics, and appearance defects |
| title_short | 2000W Blue laser directed energy deposition of AlSi7Mg: process parameters, molten pool characteristics, and appearance defects |
| title_sort | 2000w blue laser directed energy deposition of alsi7mg process parameters molten pool characteristics and appearance defects |
| topic | directed energy deposition blue laser molten pool in-situ monitoring appearance defect |
| url | http://dx.doi.org/10.1080/17452759.2022.2120405 |
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