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Preparation of A357 Alloy Slurry by Pulsed Magnetic Field Processing

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Abstract

Pulsed magnetic field (PMF) processing was employed for preparing semi-solid A357 alloy slurry in this study. The effects of pouring temperature and vibration power on the microstructure of the primary phase in semi-solid A357 alloy slurry were studied, and some characteristic parameters characterized the morphology and the grain size of the primary α-Al particles were obtained. The results show that the primary α-Al particles became finer and rounder with the decrease of pouring temperature and/or the increase of vibration power. However, over a certain vibration power, coarse structures appeared again. The slurry with the primary α-Al particles of average diameter of approximately 92 μm and average shape factor of 0.56 can be prepared under the action of a PMF at a vibration power of 250 W with pouring temperature of 903 K (630 °C). It was feasible to use PMF processing to prepare semi-solid alloy slurry because of its strong forced convection within the whole bulk melt.

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Acknowledgments

This work was supported by the Youth Foundation of Jiangxi Educational Committee (GJJ10198), the Foundation of Provincial Department of Science and Technology (2010EHB01800), the Foundation of Jiangxi Provincial Educational Committee (GJJ11521), and the National Natural Science Foundation of China (Grant No.51164027).

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Authors and Affiliations

  1. School of Aeronautical Manufacture Engineering, Nanchang Hangkong University, Nanchang, 330063, P.R. China

    L. Zhang (Lecturer), J. P. Yao (Professor), H. Qiu (Master) & Q. Zhou (Associate Professor)

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  1. L. Zhang
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  2. J. P. Yao
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  3. H. Qiu
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  4. Q. Zhou
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Corresponding author

Correspondence to L. Zhang.

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Manuscript submitted September 5, 2011.

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Zhang, L., Yao, J.P., Qiu, H. et al. Preparation of A357 Alloy Slurry by Pulsed Magnetic Field Processing. Metall Mater Trans B 43, 598–602 (2012). https://doi.org/10.1007/s11663-011-9632-0

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  • DOI: https://doi.org/10.1007/s11663-011-9632-0

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