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Orientation and Velocity Dependence of the Nonequilibrium Partition Coefficient

Published online by Cambridge University Press:  21 February 2011

K.M. Beatty  and
K.A. Jackson
K.M. Beatty
Affiliation:
Department of Materials Science and Engineering, The University of Arizona, Tucson AZ 85721
K.A. Jackson
Affiliation:
Department of Materials Science and Engineering, The University of Arizona, Tucson AZ 85721
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Abstract

Monte Carlo simulations based on a Spin-1 Ising Model for binary alloys have been used to investigate the non-equilibrium partition coefficient (kneq ) as a function of solid-liquid interface velocity and orientation. In simulations of Si with a second component kneq is greater in the [111] direction than the [100] direction in agreement with experimental results reported by Aziz et al. The simulated partition coefficient scales with the square of the step velocity divided by the diffusion coefficient of the secondary component in the liquid.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 398: Symposium C – Thermodynamics and Kinetics of Phase Transformations , 1995 , 113
Copyright
Copyright © Materials Research Society 1998

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References

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