A simple approach toward quantitative phase field simulation for dilute-alloy solidification
Resource
Journal of Crystal Growth 282 (3-4): 515-524
Journal
Journal of Crystal Growth
Journal Issue
282
Pages
515-524
Date Issued
2005
Date
2005
Author(s)
Abstract
We present a simple approach that could help quantitative phase field simulation for dilute-alloy solidification. The
proposed approach mends the solute trapping problem by using a simple interface model (SIM), which requires only
one free parameter. To test the feasibility of this model, a free dendritic growth from a small nucleus is simulated, and a
good agreement with the anti-trapping current (ATC) model [Karma, Phys. Rev. Lett. 87 (2001) 115701] is obtained. By
further studying the solute trapping effect during directional solidification, we find that the results give, with this model,
a good thermodynamic consistence without solute trapping over two-order increment of the solidification speed and the
interface thickness. Good agreement with the classical theory is obtained as well.
Type
journal article
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