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Experimental study and numerical simulation on springback of Ti-6Al-4V alloy under hot U-bending

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Abstract

In this study, springback of Ti-6Al-4V sheet subjected to hot bending was investigated experimentally and by numerical simulation. The experiment determined the relative effects of forming temperature, forming speed and holding time on springback during hot bending of the alloy sheet. Distribution of temperature and equivalent stress fields experienced during hot bending were predicted by thermal-mechanical coupling numerical simulation. Analysis of the mutual influence of deformation and temperature was conducted using finite element modeling in DYNAFORM software. The results indicated that increased forming temperature, forming speed and holding time each reduced springback to a degree. Forming temperature had the greatest influence in limiting springback, followed by forming speed and holding time, the latter of which was of minor significance. The thermomechanical coupling numerical model is reliable and the predicted temperature field distribution was confirmed.

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Acknowledgments

This work was supported by the Fujian Provincial Natural Science Foundation project (Grant No. 2021J011212) and the open fund of Fujian Provincial Key Laboratory of Functional Materials and Applications (Xiamen University of Technology, Grant No. fma2022004).

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Correspondence to Fenqiang Li.

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Fenqiang Li is working as an Associate Professor in School of Materials Science and Engineering at Xiamen University of Technology in Xiamen, People’s Republic of China. His research area includes electromagnetic forming, finite element analysis and optimal design. He is also involved in numerous innovative research initiatives. He completed his doctoral degree at Huazhong University of Science and Technology, China.

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Li, F., Jiang, J., Wang, J. et al. Experimental study and numerical simulation on springback of Ti-6Al-4V alloy under hot U-bending. J Mech Sci Technol 37, 3691–3697 (2023). https://doi.org/10.1007/s12206-023-0634-z

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  • DOI: https://doi.org/10.1007/s12206-023-0634-z

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