Research on High Temperature Stamping Forming Performance and Process Parameters Optimization of 7075 Aluminum Alloy
The stress strain curve of 7075 aluminum alloy in the temperature range of 310 °C to 410 °C was obtained by Gleeble-3800. By Nakazima test, the isothermal thermoforming limit diagrams of 7075 aluminum alloy at different deformation temperatures and stamping speeds were acquired. Moreover, the parame...
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| Format: | Article |
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MDPI AG
2021-09-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/14/19/5485 |
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| author | Zheng Ma Hongchao Ji Xiaomin Huang Wenchao Xiao Xuefeng Tang |
| author_facet | Zheng Ma Hongchao Ji Xiaomin Huang Wenchao Xiao Xuefeng Tang |
| author_sort | Zheng Ma |
| collection | DOAJ |
| description | The stress strain curve of 7075 aluminum alloy in the temperature range of 310 °C to 410 °C was obtained by Gleeble-3800. By Nakazima test, the isothermal thermoforming limit diagrams of 7075 aluminum alloy at different deformation temperatures and stamping speeds were acquired. Moreover, the parameters of automotive S-rail hot stamping process were optimized by GA-BP neural network. The results show that the forming limit curve of 7075 aluminum alloy increases as the deformation temperature and stamping speed increase. The predicted optimal parameters for hot stamping of automotive S-rails by GA-BP neural network are: stamping speed is 50 mm/s, friction coefficient between die and blank is 0.1, and blank holder force is 5 kN. The maximum thinning rate at this process parameter is 9.37%, which provided a reference for 7075 aluminum alloy automotive S-rail hot stamping. |
| first_indexed | 2024-03-10T06:57:03Z |
| format | Article |
| id | doaj.art-806cae6c27de43598de824c393f276aa |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T06:57:03Z |
| publishDate | 2021-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-806cae6c27de43598de824c393f276aa2023-11-22T16:22:33ZengMDPI AGMaterials1996-19442021-09-011419548510.3390/ma14195485Research on High Temperature Stamping Forming Performance and Process Parameters Optimization of 7075 Aluminum AlloyZheng Ma0Hongchao Ji1Xiaomin Huang2Wenchao Xiao3Xuefeng Tang4College of Mechanical Engineering, North China University of Science and Technology, Tangshan 063210, ChinaCollege of Mechanical Engineering, North China University of Science and Technology, Tangshan 063210, ChinaSchool of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaSchool of Engineering and Technology, China University of Geosciences (Beijing), Beijing 100083, ChinaState Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, ChinaThe stress strain curve of 7075 aluminum alloy in the temperature range of 310 °C to 410 °C was obtained by Gleeble-3800. By Nakazima test, the isothermal thermoforming limit diagrams of 7075 aluminum alloy at different deformation temperatures and stamping speeds were acquired. Moreover, the parameters of automotive S-rail hot stamping process were optimized by GA-BP neural network. The results show that the forming limit curve of 7075 aluminum alloy increases as the deformation temperature and stamping speed increase. The predicted optimal parameters for hot stamping of automotive S-rails by GA-BP neural network are: stamping speed is 50 mm/s, friction coefficient between die and blank is 0.1, and blank holder force is 5 kN. The maximum thinning rate at this process parameter is 9.37%, which provided a reference for 7075 aluminum alloy automotive S-rail hot stamping.https://www.mdpi.com/1996-1944/14/19/54857075 aluminum alloyforming limit diagramGA-BP neural networkautomotive S-railprocess parameters |
| spellingShingle | Zheng Ma Hongchao Ji Xiaomin Huang Wenchao Xiao Xuefeng Tang Research on High Temperature Stamping Forming Performance and Process Parameters Optimization of 7075 Aluminum Alloy Materials 7075 aluminum alloy forming limit diagram GA-BP neural network automotive S-rail process parameters |
| title | Research on High Temperature Stamping Forming Performance and Process Parameters Optimization of 7075 Aluminum Alloy |
| title_full | Research on High Temperature Stamping Forming Performance and Process Parameters Optimization of 7075 Aluminum Alloy |
| title_fullStr | Research on High Temperature Stamping Forming Performance and Process Parameters Optimization of 7075 Aluminum Alloy |
| title_full_unstemmed | Research on High Temperature Stamping Forming Performance and Process Parameters Optimization of 7075 Aluminum Alloy |
| title_short | Research on High Temperature Stamping Forming Performance and Process Parameters Optimization of 7075 Aluminum Alloy |
| title_sort | research on high temperature stamping forming performance and process parameters optimization of 7075 aluminum alloy |
| topic | 7075 aluminum alloy forming limit diagram GA-BP neural network automotive S-rail process parameters |
| url | https://www.mdpi.com/1996-1944/14/19/5485 |
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