Nucleation and bulk crystallization in binary phase field theory.
We present a phase field theory for binary crystal nucleation. In the one-component limit, quantitative agreement is achieved with computer simulations (Lennard-Jones system) and experiments (ice-water system) using model parameters evaluated from the free energy and thickness of the interface. The critical undercoolings predicted for Cu-Ni alloys accord with the measurements, and indicate homogeneous nucleation. The Kolmogorov exponents deduced for dendritic solidification and for "soft impingement" of particles via diffusion fields are consistent with experiment.
Gránásy
László
L
Research Institute for Solid State Physics and Optics, P.O. Box 49, H-1525 Budapest, Hungary.
Börzsönyi
Tamás
T
Pusztai
Tamás
T