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Evaluation of the formability of AA2198-T3 Al-Li alloy in warm sheet hydroforming

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Abstract

This study aims to investigate the formability of the AA2198-T3 Al-Li alloy in hydro-mechanical deep drawing (HMDD), through experimentation and finite element simulation. The effects of the most critical factors were studied: die cavity pressure and forming temperature; the forming temperature is selected at 298K and 423K. The Gurson−Tvergaard−Needleman model (GTN model) was employed to analyze the formability of AA2198-T3 Al-Li alloy and predict the fracture in the hydroforming of a cylindrical part. Both the numerical and experimental results showed that the increase of the pressure inside the liquid chamber, within a certain range, contributes to improve the formability of the alloy. Increasing the temperature would reduce the required pressure for sheet hydroforming. Notably, the appropriate chamber pressure was beneficial to form good quality parts with a relatively uniform wall thickness. By analyzing the fracture morphologies, the brittle fracture of AA2198-T3 plays a main role at room temperature, but the ductile fracture was shown at the elevated temperature.

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Data availability

The data that support the findings of this study are available from the corresponding author upon reasonable request. The software application of this study can be obtained from the corresponding author upon reasonable request.

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Funding

This work is funded by the Bureau of international cooperation of the Chinese Academy of Sciences (174321KYSB20150020), the National Natural Science Foundation of China (Grant No. 51605310), Jiangsu Province Science and Technology Program (Grant No. BE2016156), Shenyang Science and Technology Program (17-32-6-00), the Research Project of State Key Laboratory of Mechanical System and Vibration (MSV201708), and the Research Fund of Nan**g University of Aeronautics and Astronautics (No. YAH17019).

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Authors and Affiliations

  1. College of Mechanical and Electrical Engineering, Nan**g University of Aeronautics and Astronautics, Nan**g, 210016, People’s Republic of China

    Hui Wang, Sijia Cheng, Zhuang Ye & Tianli Wu

  2. School of Materials Science and Engineering, Ocean University of China, Qingdao, 266100, People’s Republic of China

    Kai **

  3. College of Material Science and Technology, Nan**g University of Aeronautics and Astronautics, Nan**g, 211100, People’s Republic of China

    Xunzhong Guo

Authors
  1. Hui Wang
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  2. Sijia Cheng
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  3. Zhuang Ye
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  4. Tianli Wu
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  5. Kai **
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  6. Xunzhong Guo
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Contributions

Hui Wang put forward research ideas and design research schemes. Sijia Cheng is responsible for collecting, collating, and analyzing data. Zhuang Ye is responsible for revision, typesetting, and final revision. Tianli Wu, Kai **, and Xunzhong Guo are in charge of conducting experiments.

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Correspondence to Zhuang Ye.

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Wang, H., Cheng, S., Ye, Z. et al. Evaluation of the formability of AA2198-T3 Al-Li alloy in warm sheet hydroforming. Int J Adv Manuf Technol 118, 405–416 (2022). https://doi.org/10.1007/s00170-021-07961-z

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  • DOI: https://doi.org/10.1007/s00170-021-07961-z

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