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Pulse Current Auxiliary Thermal Deep Drawing of SiCp/2024Al Composite Sheet with Poor Formability

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Abstract

The pulse current auxiliary thermal deep drawing (PCATDD) of SiCp/2024Al composite sheets with poor formability was investigated and an integrated high-efficient heating and deep drawing process design was developed to improve the formability of SiCp/2024Al composites. The average pulse current density was achieved at 21.7 A/mm2 with temperature of SiCp/2024Al composites reaching around 673 K in the 50 s. The temperature uniformity of the sheet electrified by the high-intensity pulse current and temperature gradients between the sliding core and top flat of female die were investigated to achieve precise temperature control of sheet and die. During electrification, the stainless steel inserts between the sheet and the copper electrodes successfully prevented heat dissipation and promoted temperature uniformity. Meanwhile, the temperature gradients can be efficiently controlled by blowing high-speed air. The workpiece showed good shape retention, surface quality, and high geometry accuracy. The present study has verified successfully the feasibility of process procedure for PCATDD of SiCp/2024Al composites sheet.

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Acknowledgments

This work is supported by the Fundamental Research Funds for the Central Universities” (Grant No. HIT.KLOF.2010039) and the National Natural Science Foundation of China (Grant No. 51175112). The authors express their appreciation to support for this work.

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Authors and Affiliations

  1. National Key Laboratory of Science and Technology on Precision Heat Processing of Metal, Harbin Institute of Technology, No. 92, West Da-Zhi Street, Harbin, 150001, China

    G. F. Wang, B. Wang, S. S. Jang & K. F. Zhang

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  1. G. F. Wang
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  2. B. Wang
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  3. S. S. Jang
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  4. K. F. Zhang
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Correspondence to B. Wang.

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Wang, G.F., Wang, B., Jang, S.S. et al. Pulse Current Auxiliary Thermal Deep Drawing of SiCp/2024Al Composite Sheet with Poor Formability. J. of Materi Eng and Perform 21, 2062–2066 (2012). https://doi.org/10.1007/s11665-012-0165-8

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  • DOI: https://doi.org/10.1007/s11665-012-0165-8

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