Investigations on the warm spinning characteristics and processing parameters optimization of AA 7075 aluminum alloy conical parts with inner ribs
The warm spinning of AA7075 aluminum alloy conical parts with internal ribs involves complex deformation conditions including compression and shear plastic deformation. To mechanistically reproduce these deformation characteristics, the warm compression tests and notched specimen warm tensile tests...
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Elsevier
2025-09-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425019970 |
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| author | Jia-Fu Wu Daoguang He Y.C. Lin |
| author_facet | Jia-Fu Wu Daoguang He Y.C. Lin |
| author_sort | Jia-Fu Wu |
| collection | DOAJ |
| description | The warm spinning of AA7075 aluminum alloy conical parts with internal ribs involves complex deformation conditions including compression and shear plastic deformation. To mechanistically reproduce these deformation characteristics, the warm compression tests and notched specimen warm tensile tests were implemented. The stress-strain responses and corresponding displacement-load curves of AA7075 aluminum alloy were systematically analyzed to develop a unified elastic-viscoplastic constitutive model. The developed model incorporates the interaction mechanism of the dislocation density and grain/subgrain size, along with a modified GTN constitutive model. Then, the model was implemented into ABAQUS software via user subroutines to reveal the influences of spinning parameters upon the Marco-forming characteristics including the rib height and conicality of AA7075 aluminum alloy conical parts. The SVM-XGBoost hybrid model was employed to optimize warm spinning parameters. The optimal processing window for the warm spinning of AA7075 aluminum alloy conical parts with internal ribs was determined as follows: forming temperature (200–230 °C), feed rate (0.8–1.2 mm·r−1), and thinning ratio (50–60 %). The engineering trial results demonstrate that components fabricated within the identified process window achieve satisfactory forming accuracy, with consistent mechanical properties and microstructural characteristics. This verifies the reliability of the SVM-XGBoost hybrid model for process parameter optimization. |
| format | Article |
| id | doaj-art-d8d679bb6cff4180a739dbf44d3e81e7 |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-d8d679bb6cff4180a739dbf44d3e81e72025-08-23T04:48:32ZengElsevierJournal of Materials Research and Technology2238-78542025-09-01382960297710.1016/j.jmrt.2025.08.044Investigations on the warm spinning characteristics and processing parameters optimization of AA 7075 aluminum alloy conical parts with inner ribsJia-Fu Wu0Daoguang He1Y.C. Lin2School of Mechanical and Electrical Engineering, Central South University, Changsha, 410083, China; School of Mechanical Engineering, Guiyang University, Guiyang, 550005, ChinaSchool of Mechanical and Electrical Engineering, Central South University, Changsha, 410083, China; State Key Laboratory of Precision Manufacturing for Extreme Service Performance, Changsha, 410083, China; Corresponding author. School of Mechanical and Electrical Engineering, Central South University, Changsha, 410083, China.School of Mechanical and Electrical Engineering, Central South University, Changsha, 410083, China; State Key Laboratory of Precision Manufacturing for Extreme Service Performance, Changsha, 410083, China; Corresponding author. School of Mechanical and Electrical Engineering, Central South University, Changsha, 410083, China.The warm spinning of AA7075 aluminum alloy conical parts with internal ribs involves complex deformation conditions including compression and shear plastic deformation. To mechanistically reproduce these deformation characteristics, the warm compression tests and notched specimen warm tensile tests were implemented. The stress-strain responses and corresponding displacement-load curves of AA7075 aluminum alloy were systematically analyzed to develop a unified elastic-viscoplastic constitutive model. The developed model incorporates the interaction mechanism of the dislocation density and grain/subgrain size, along with a modified GTN constitutive model. Then, the model was implemented into ABAQUS software via user subroutines to reveal the influences of spinning parameters upon the Marco-forming characteristics including the rib height and conicality of AA7075 aluminum alloy conical parts. The SVM-XGBoost hybrid model was employed to optimize warm spinning parameters. The optimal processing window for the warm spinning of AA7075 aluminum alloy conical parts with internal ribs was determined as follows: forming temperature (200–230 °C), feed rate (0.8–1.2 mm·r−1), and thinning ratio (50–60 %). The engineering trial results demonstrate that components fabricated within the identified process window achieve satisfactory forming accuracy, with consistent mechanical properties and microstructural characteristics. This verifies the reliability of the SVM-XGBoost hybrid model for process parameter optimization.http://www.sciencedirect.com/science/article/pii/S22387854250199707075 aluminum alloyWarm spinningProcess parameter optimizationSVM-XGBoost hybrid model |
| spellingShingle | Jia-Fu Wu Daoguang He Y.C. Lin Investigations on the warm spinning characteristics and processing parameters optimization of AA 7075 aluminum alloy conical parts with inner ribs Journal of Materials Research and Technology 7075 aluminum alloy Warm spinning Process parameter optimization SVM-XGBoost hybrid model |
| title | Investigations on the warm spinning characteristics and processing parameters optimization of AA 7075 aluminum alloy conical parts with inner ribs |
| title_full | Investigations on the warm spinning characteristics and processing parameters optimization of AA 7075 aluminum alloy conical parts with inner ribs |
| title_fullStr | Investigations on the warm spinning characteristics and processing parameters optimization of AA 7075 aluminum alloy conical parts with inner ribs |
| title_full_unstemmed | Investigations on the warm spinning characteristics and processing parameters optimization of AA 7075 aluminum alloy conical parts with inner ribs |
| title_short | Investigations on the warm spinning characteristics and processing parameters optimization of AA 7075 aluminum alloy conical parts with inner ribs |
| title_sort | investigations on the warm spinning characteristics and processing parameters optimization of aa 7075 aluminum alloy conical parts with inner ribs |
| topic | 7075 aluminum alloy Warm spinning Process parameter optimization SVM-XGBoost hybrid model |
| url | http://www.sciencedirect.com/science/article/pii/S2238785425019970 |
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