Abstract
The processes involved in the formation of macrosegregation in castings or ingots are discussed. A model ingot was used for studying the progress of macrosegregation as the growth front moved across the specimen. Pb-Sn and Sn-Zn alloys were chosen to illustrate the effect of the change in density of the inter dendritic liquid during freezing. At slow growth rates, it was found that convective interdendritic flow was the dominant mechanism in all the castings.
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Formerly Student, Department of Metallurgy, Oxford University
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Hebditch, D.J., Hunt, J.D. Observations of ingot macrosegregation on model systems. Metall Trans 5, 1557–1564 (1974). https://doi.org/10.1007/BF02646326
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DOI: https://doi.org/10.1007/BF02646326