Abstract
A criterion of stircastability is formulated, which relates the specific process limits for semicontinuous stircasting (rheocasting or thixotropic slurry casting) to alloy properties, and which can be used to decide which alloy compositions can be continuously stircast in a given apparatus. It provides a better understanding of the casting rate behaviour of alloys in continuous stircasting. For a specific type of apparatus, described in this paper, it predicts an upper and a lower limit of the nominal alloy composition, for continuous stircasting of thixotropic slurries. In practice, this means that eutectic or close to eutectic alloys cannot be stircast in this apparatus, and that stircastability decreases toward smaller freezing ranges.
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Molenaar, J.M.M., Salemans, F.W.H.C. & Katgerman, L. Analysis of process limits for continuous thixotropic slurry casting. J Mater Sci 20, 700–709 (1985). https://doi.org/10.1007/BF01026545
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DOI: https://doi.org/10.1007/BF01026545