Abstract
Directional solidification of nickel-based single crystals requires control of the heat transfer, fluid flow, and phase transformations at the solid-liquid interface during withdrawal in the Bridgman process. While the morphological details of the dendritic structure at the solid-liquid interface influence defect formation processes, there is an incomplete understanding of this structure as a function of alloy composition and processing conditions. A three-dimensional serial sectioning and image reconstruction approach for characterization of the solidification front has been developed and structural characteristics of the dendritic structure are quantified.
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Madison, J., Spowart, J.E., Rowenhorst, D.J. et al. The three-dimensional reconstruction of the dendritic structure at the solid-liquid interface of a Ni-based single crystal. JOM 60, 26–30 (2008). https://doi.org/10.1007/s11837-008-0085-0
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DOI: https://doi.org/10.1007/s11837-008-0085-0