Abstract
Predicting the columnar-to-equiaxed transition (CET) in the grain structure of metal castings is still an important challenge in the field of solidification. One of the most important open questions is the role played by melt convection. A three-phase Eulerian volume-averaged model of the CET in the presence of melt convection is developed. The model is validated by performing simulations of a recent benchmark solidification experiment involving a Sn - 3 wt. pct. Pb alloy. The predicted cooling curves are found to be in a good agreement with the experimental measurements. After some adjustments to the grain nucleation parameters, the measured boundary between columnar and equiaxed grains is also well predicted.
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© 2016 The Minerals, Metals & Materials Society
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Rad, M.T., Beckermann, C. (2016). Validation of a Model for the Columnar to Equiaxed Transition with Melt Convection. In: Nastac, L., et al. CFD Modeling and Simulation in Materials Processing 2016. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-65133-0_11
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DOI: https://doi.org/10.1007/978-3-319-65133-0_11
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-65132-3
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