Abstract
Some computational results on dendritic growth in binary alloy are obtained by using a phase–field model coupled the solute gradient term. The effect of crystalline anisotropy on the morphological formation, tip steady state and the solute partition is investigated for different dendrites. The interface formation and tip steady state are affected evidently with increase in anisotropy for ‹100› dendrite growth, but the solute partition coefficient is not significantly influenced. For ‹110› preferred growth directions, when the anisotropy strength is lower than the critical value, the tip velocity of [110] direction is lower than [101] and [011] directions. As the anisotropy strength crosses the critical value, the tip velocity of [110] direction increases suddenly, larger than the tip velocity of [101] and [011] directions, showing strong solute trapping.
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