Suppression of Anomalous Interface Effects by Localization of Solute Redistribution in Thin Interface Phase-Field Modeling of Solidification

Abstract:

A phase field model for alloy solidification was developed to suppress the anomalous interface effects such as enhanced surface diffusion, chemical potential jump and surface stretching by localizing the solute redistribution into a narrow region within the phase-field interface. Application of this model to a free dendritic growth in an undercooled liquid yields quantitatively the same results as previously reported anti-trapping model. By localization of the solute redistribution into a region of single grid spacing the anomalous interfacial effects can be effectively suppressed. This model can be used for quantitative phase field calculation with an enhanced computational efficiency.

• Periodical: Materials Science Forum (Volumes 475-479)
• Pages: 3197-3202
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.475-479.3197
• Online since: January 2005
• Authors: Won Tae Kim, Seong Gyoon Kim
• Keywords: Dendrite, Diffuse Interface, Phase Field Modellig, Solidification

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