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Effects of Annular Electromagnetic Stirring Coupled with Intercooling on Grain Refinement and Homogeneity During Direct Chill Casting of Large-Sized 7005 Alloy Billet

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Abstract

To obtain a large-sized, high-quality aluminum alloy billet, an advanced uniform direct chill (UDC) casting method was developed by combining annular electromagnetic stirring (A-EMS) with intercooling in the sump. The 7005 alloy was chosen to investigate the effect of UDC on grain refinement and homogeneity during normal direct chill (NDC) casting. It was concluded that the microstructure consisting of both primary α-Al phase and secondary phases becomes finer and more homogeneous for the billets prepared with UDC casting compared to those prepared with NDC casting, and the forced cooling from both the inner and outer melt under A-EMS has a measurable effect on grain refinement and homogeneity.

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Acknowledgements

This work was financially supported by the International Science and Technology Cooperation Program of China (No. 2015DFA51230).

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Authors and Affiliations

  1. General Research Institute for Nonferrous Metals, Beijing, 100088, People’s Republic of China

    Yajun Luo, Zhifeng Zhang, Bao Li, Mingwei Gao, Yang Qiu & Min He

Authors
  1. Yajun Luo
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  2. Zhifeng Zhang
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  3. Bao Li
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  4. Mingwei Gao
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  5. Yang Qiu
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  6. Min He
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Correspondence to Yajun Luo.

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Luo, Y., Zhang, Z., Li, B. et al. Effects of Annular Electromagnetic Stirring Coupled with Intercooling on Grain Refinement and Homogeneity During Direct Chill Casting of Large-Sized 7005 Alloy Billet. JOM 69, 2640–2643 (2017). https://doi.org/10.1007/s11837-017-2340-8

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  • DOI: https://doi.org/10.1007/s11837-017-2340-8

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