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.
Original language | English |
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Pages (from-to) | 515-524 |
Number of pages | 10 |
Journal | Journal of Crystal Growth |
Volume | 282 |
Issue number | 3-4 |
DOIs | |
Publication status | Published - 2005 Sept 1 |
Externally published | Yes |
Keywords
- A1. Adaptive phase field simulations
- A1. Interface model
- A1. Solidification
- A1. Solute trapping
ASJC Scopus subject areas
- Condensed Matter Physics
- Inorganic Chemistry
- Materials Chemistry