Conclusions
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1.
After crystallization of secondary alloys AK5M2 and AK4M4 by granulation the size of dendritic cells is an order lower and that of excess phases 5–7 times smaller than in ingots of the alloys cast in chill molds. The structural components are evenly distributed; initial crystallization of brittle phases containing iron and manganese is suppressed.
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2.
The concentration of alloying elements in the solid solution is smaller in the granules as-cast than after standard quenching.
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Literature cited
A. F. Belov, "Metallurgy of granules—a new method of increasing the quality of structural materials," Vestn. Akad. Nauk SSSR, No. 5, 74 (1975).
A. I. Kolpashnikov and A. V. Efremov, Granulated Materials [in Russian], Metallurgiya, Moscow (1977).
R. R. Malinovskii and V. I. Tararyshkin, Tekhnol. Legkikh Splavov, No. 3, 24 (1969).
Additional information
Physicotechnical Institute, Academy of Sciences of the Belorussian SSR. State Scientific-Research and Design Institute of Alloys and Treatment of Nonferrous Metals. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 6, pp. 61–62, June, 1980.
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Parkhutik, P.A., Lubenskii, M.Z., Badaev, V.G. et al. Structure of secondary cast aluminum alloys obtained by granulation. Met Sci Heat Treat 22, 457–459 (1980). https://doi.org/10.1007/BF00693657
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DOI: https://doi.org/10.1007/BF00693657