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Formability and microstructure evolution of Ti-6Al-4 V alloy in electric hot incremental forming

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Abstract

Based on a self-built experiment platform, the research of electric hot incremental forming (EHIF) of Ti-6Al-4 V alloy was carried out. The temperature of the tool head was controlled at 300–500 ℃, respectively. The effects of temperature on the hardness and formability of Ti-6Al-4 V formed components and the microstructure evolution were investigated. The results showed that the formability increased with the increasing temperature. Average fracture depth of 5.6 mm was obtained at room temperature. When the tool head was controlled at 300 and 500 ℃, the average fracture depths of the formed components were 12.6 and 21.0 mm, which were increased by 125% and 275%, respectively. Microstructure evolution of the components formed at 500 ℃ showed that the ratio of β phase increased gradually as the forming depth increased. In addition, the microstructure was more uniform at 500 ℃. The hardness test results also confirmed that high temperature weakens the mechanical performance difference in different directions of the formed components. However, high temperature deteriorated the lubricant condition and increased the surface roughness of the formed components.

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The processed data required to reproduce these findings cannot be shared at this time as the data also forms part of an ongoing study.

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Acknowledgements

The authors would like to thank the Physical-Chemical Materials Analytical & Testing Center of Shandong University at Weihai for providing the optical microscope in order to components microstructure observation.

Funding

This work was supported by the financial support from National Natural Science Foundation of China [grant number 52175339, 52001185] and the Natural Science Foundation of Shandong Province [grant number ZR2019MEE008, ZR2020QE029]. National Natural Science Foundation of China, 52175339, Xingrong Chu, 52001185, Zhiyong Zhao, Natural Science Foundation of Shandong Province, ZR2019MEE008,Xingrong Chu, ZR2020QE029, Zhiyong Zhao.

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Authors and Affiliations

  1. Associated Engineering Research Center of Mechanics and Mechatronic Equipment, Shandong University, Weihai, 264209, People’s Republic of China

    Chengxin Liu, Xingrong Chu, Zhiyong Zhao & Dongwei Ao

  2. Department of Mechanical and Electrical Engineering, Shandong Vocational College of Science and Technology, Weifang, 261000, People’s Republic of China

    Honggang Duan

  3. Sinosteel Zhengzhou Metal Products Research Institute Co., Ltd., Zhengzhou, 450000, People’s Republic of China

    He Li

Authors
  1. Chengxin Liu
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  2. Honggang Duan
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  3. Xingrong Chu
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  4. He Li
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  5. Zhiyong Zhao
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  6. Dongwei Ao
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Contributions

Chengxin Liu: Investigation, Conceptualization, Methodology, Formal analysis, Writing-original draft. Honggang Duan: Investigation, Data curation, Formal analysis, Validation. Xingrong Chu: Conceptualization, Project administration, Formal analysis, Funding acquisition, Writing-original draft. He Li: Investigation, Data curation, Formal analysis. Zhiyong Zhao: Supervision, Resources, Writing-review and editing. Dongwei Ao: Supervision, Writing-review and editing.

Corresponding authors

Correspondence to Xingrong Chu or Zhiyong Zhao.

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Highlights

1. The EHIF with temperature feedback system was adopted for titanium alloy sheet.

2. Formability of TC4 components by EHIF under different temperatures was studied.

3. Effect of deformation degree and temperature on the microstructure of TC4 components was analyzed.

4. DRX significantly weakened mechanical properties difference of TC4 components.

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Liu, C., Duan, H., Chu, X. et al. Formability and microstructure evolution of Ti-6Al-4 V alloy in electric hot incremental forming. Int J Adv Manuf Technol 119, 2935–2944 (2022). https://doi.org/10.1007/s00170-021-08583-1

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  • DOI: https://doi.org/10.1007/s00170-021-08583-1

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