Optimization of processing parameters for LPBF-manufactured CoCr alloys based on laser volume energy density
In this paper, the finite element method (FEM) and experiments were adopted to optimize the processing parameters of laser powder bed fusion-manufactured cobalt-chromium (CoCr) alloys on the basis of laser volume energy density. According to simulation results, both the maximum temperature, heat-aff...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-11-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423027175 |
| _version_ | 1797301528269160448 |
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| author | Wei Liu Qiusheng Xie Yu Cao Jianhong Wang Peikang Bai |
| author_facet | Wei Liu Qiusheng Xie Yu Cao Jianhong Wang Peikang Bai |
| author_sort | Wei Liu |
| collection | DOAJ |
| description | In this paper, the finite element method (FEM) and experiments were adopted to optimize the processing parameters of laser powder bed fusion-manufactured cobalt-chromium (CoCr) alloys on the basis of laser volume energy density. According to simulation results, both the maximum temperature, heat-affected zone and cooling rate of molten pool increased with the enhancement of laser power and scanning speed even under the same laser volume energy density. By conducting relevant experiments, it is found that the phase transformation, microstructure and mechanical properties were also influenced by the variation of laser power and scanning speed, and the LPBF-processed CoCr alloys with excellent forming quality could be acquired when the laser power was 160 W, and the scanning speed was 750 mm/s. Therefore, it is impracticable to optimize the processing parameters only on the basis of laser volume energy density, various methods should be employed to complete the whole optimization procedure. |
| first_indexed | 2024-03-07T23:22:54Z |
| format | Article |
| id | doaj.art-7947b1b3c43f4ab7b4068ec3384fa631 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-07T23:22:54Z |
| publishDate | 2023-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-7947b1b3c43f4ab7b4068ec3384fa6312024-02-21T05:27:09ZengElsevierJournal of Materials Research and Technology2238-78542023-11-012740534063Optimization of processing parameters for LPBF-manufactured CoCr alloys based on laser volume energy densityWei Liu0Qiusheng Xie1Yu Cao2Jianhong Wang3Peikang Bai4Shanxi Key Laboratory of Controlled Metal Solidification and Precision Manufacturing, North University of China, Taiyuan 030051, China; School of Materials Science and Engineering, North University of China, Taiyuan 030051, China; Corresponding author. Shanxi Key Laboratory of Controlled Metal Solidification and Precision Manufacturing, North University of China, Taiyuan 030051, China.Shanxi Key Laboratory of Controlled Metal Solidification and Precision Manufacturing, North University of China, Taiyuan 030051, China; School of Materials Science and Engineering, North University of China, Taiyuan 030051, ChinaShanxi Key Laboratory of Controlled Metal Solidification and Precision Manufacturing, North University of China, Taiyuan 030051, China; School of Materials Science and Engineering, North University of China, Taiyuan 030051, ChinaShanxi Key Laboratory of Controlled Metal Solidification and Precision Manufacturing, North University of China, Taiyuan 030051, China; School of Materials Science and Engineering, North University of China, Taiyuan 030051, ChinaShanxi Key Laboratory of Controlled Metal Solidification and Precision Manufacturing, North University of China, Taiyuan 030051, China; School of Materials Science and Engineering, North University of China, Taiyuan 030051, ChinaIn this paper, the finite element method (FEM) and experiments were adopted to optimize the processing parameters of laser powder bed fusion-manufactured cobalt-chromium (CoCr) alloys on the basis of laser volume energy density. According to simulation results, both the maximum temperature, heat-affected zone and cooling rate of molten pool increased with the enhancement of laser power and scanning speed even under the same laser volume energy density. By conducting relevant experiments, it is found that the phase transformation, microstructure and mechanical properties were also influenced by the variation of laser power and scanning speed, and the LPBF-processed CoCr alloys with excellent forming quality could be acquired when the laser power was 160 W, and the scanning speed was 750 mm/s. Therefore, it is impracticable to optimize the processing parameters only on the basis of laser volume energy density, various methods should be employed to complete the whole optimization procedure.http://www.sciencedirect.com/science/article/pii/S2238785423027175Laser powder bed fusionFinite element simulationLaser volume energy densityCoCr alloy |
| spellingShingle | Wei Liu Qiusheng Xie Yu Cao Jianhong Wang Peikang Bai Optimization of processing parameters for LPBF-manufactured CoCr alloys based on laser volume energy density Journal of Materials Research and Technology Laser powder bed fusion Finite element simulation Laser volume energy density CoCr alloy |
| title | Optimization of processing parameters for LPBF-manufactured CoCr alloys based on laser volume energy density |
| title_full | Optimization of processing parameters for LPBF-manufactured CoCr alloys based on laser volume energy density |
| title_fullStr | Optimization of processing parameters for LPBF-manufactured CoCr alloys based on laser volume energy density |
| title_full_unstemmed | Optimization of processing parameters for LPBF-manufactured CoCr alloys based on laser volume energy density |
| title_short | Optimization of processing parameters for LPBF-manufactured CoCr alloys based on laser volume energy density |
| title_sort | optimization of processing parameters for lpbf manufactured cocr alloys based on laser volume energy density |
| topic | Laser powder bed fusion Finite element simulation Laser volume energy density CoCr alloy |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423027175 |
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