Abstract
A series of batch-type stirring experiments have been performed to investigate the morphological changes in the growth of the primary solid phase in Al-6Cu(Al-6 wt% Cu), as a function of the cooling rate and the rotational speed of the stirrer. The experiments show, that the cell-spacings of primary particles in stircast microstructures increase as a result of stirring, when compared to secondary dendrite arm spacings in the unstirred alloy. This result can be explained regarding heat transport during solidification. It is suggested that the solid-liquid interface of floating crystals in bulk metal liquids is cellular.
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Al-6Cu refers to the alloy Al-6 wt% Cu, which may also be written as AlCu6.
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Molenaar, J.M.M., Salemans, F.W.H.C. & Katgerman, L. The structure of stircast Al-6Cu. J Mater Sci 20, 4335–4344 (1985). https://doi.org/10.1007/BF00559322
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DOI: https://doi.org/10.1007/BF00559322