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Effects of process configuration and sheet thickness on the deformation behaviour in multi-step electromagnetic forming of aluminium alloy sheet

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Abstract

Multi-step electromagnetic forming is a novel sheet metal forming approach which makes use of electromagnetic force acting on sheet metal incrementally to cause local deformation and further accumulate a final shape. The effects of process configurations including incremental interval and discharge voltage as well as sheet thickness on the radius of curvature and deformation height are investigated by conducting experiments on 2524-T3 aluminium alloy sheet. It is found that the deformation curvature of the workpiece increases with decreasing incremental interval initially, then tends to be saturated. In addition, the enhancement of the discharge voltage proves to be an efficient method for increasing the ultimate curvature and deformation height. However, the pit defect induced by the large discharge voltage has a significantly negative influence on the surface integrity of the fabricated part when discharge voltage exceeds a critical value of 7500 V. Furthermore, the deformation height decreases with increasing sheet thickness under the other same process parameters.

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Data availability

The datasets used or analysed during the current study are available from the corresponding author on reasonable request.

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Acknowledgments

All the authors appreciate the assistance of this program for the financial support.

Funding

This work was supported by the National Basic Research Program of China (973 Program, Grant No. 2011CB012804).

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Authors and Affiliations

  1. Aerospace Research Institute of Materials & Processing Technology, China Academy of Launch Vehicle Technology, East Highland Street, Fengtai District, Beijing, 100076, China

    Chunping Fang, Xiang Zhou & Li Ling

  2. School of Mechanical Engineering and Automation, Beihang University, No. 37 Xueyuan Road, Haidian District, Beijing, 100191, China

    Wenping Wang & Min Wan

Authors
  1. Chunping Fang
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  2. Xiang Zhou
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  3. Li Ling
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  4. Wenping Wang
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  5. Min Wan
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Contributions

Chunping Fang performed the data analyses and wrote the manuscript; Xiang Zhou performed the experiment; Li Ling contributed significantly to analysis and manuscript preparation; Wenping Wang helped perform the analysis with constructive discussions; and Min Wan contributed to the conception of the study.

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Correspondence to Chunping Fang.

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Fang, C., Zhou, X., Ling, L. et al. Effects of process configuration and sheet thickness on the deformation behaviour in multi-step electromagnetic forming of aluminium alloy sheet. Int J Adv Manuf Technol 112, 2565–2572 (2021). https://doi.org/10.1007/s00170-020-06470-9

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  • DOI: https://doi.org/10.1007/s00170-020-06470-9

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