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Influence of crystallization conditions on the structure and modifying ability of Al–Sc alloys

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Abstract

The influence of the modes of thermal-and-temporal treatment and cooling rate of metallic alloys on crystallization regularities of Al–Sc alloys and their structure, properties, and modifying ability are established. Castings of Al–Sc alloy, which were prepared by the electrolysis of salt melts KF–NaF–AlF3–Sc2O3 at 820–850°C, are used as the initial charge for casting. It is established that, by varying the magnitude of melt overheating and casting temperature, it is possible to vary the crystal shape, amount, and size in wide limits. The modifying action of cast and rapidly quenched master alloys, as well as the master alloy produced by electrolysis, is tested for Al–4.5% Cu alloy. The largest effect of milling the structure of the Al–4.5% Cu–0.4% Sc alloy is attained when using the rapidly quenched master alloy.

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Authors and Affiliations

  1. Institute of High-Temperature Electrochemistry, Ural Branch, Russian Academy of Sciences, Ekaterinburg, 620219, Russia

    O. Yu. Tkacheva, P. A. Arhipov & Yu. P. Zaikov

  2. Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, Yekaterinburg, 620137, Russia

    I. G. Brodova

  3. Ural Federal University, Yekaterinburg, 620002, Russia

    Yu. P. Zaikov

Authors
  1. O. Yu. Tkacheva
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  2. I. G. Brodova
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  3. P. A. Arhipov
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  4. Yu. P. Zaikov
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Corresponding author

Correspondence to O. Yu. Tkacheva.

Additional information

Original Russian Text © O.Yu. Tkacheva, I.G. Brodova, P.A. Arhipov, Yu.P. Zaikov, 2016, published in Izvestiya Vysshikh Uchebnykh Zavedenii, Tsvetnaya Metallurgiya, 2016, No. 6, pp. 55–64.

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Tkacheva, O.Y., Brodova, I.G., Arhipov, P.A. et al. Influence of crystallization conditions on the structure and modifying ability of Al–Sc alloys. Russ. J. Non-ferrous Metals 58, 67–74 (2017). https://doi.org/10.3103/S1067821217010126

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  • DOI: https://doi.org/10.3103/S1067821217010126

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