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Simulation by Cellular Automata of the Crystallization of a Matrix Containing a Mobile Second Phase

Published online by Cambridge University Press:  21 February 2011

R.K. Shelton  and
D.C. Dunand
R.K. Shelton
Affiliation:
Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
D.C. Dunand
Affiliation:
Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
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Abstract

Two-dimensional cellular automaton computer simulations were carried out to model the geometric interaction between growing matrix grains and mobile, equiaxed particles, thus simulating crystallization (respectively, recrystallization, phase transformation or solidification) of a material containing mobile particles. As a result of particle pushing by growing grains, particle accumulation at grain boundaries and triple-points and concomitant particle depletion within grains occurs. A range of grain nucleation rate, particle area fractions and particle settling rate was investigated under continuous grain nucleation conditions. While these parameters do not change the crystallization kinetics or grain size or shape, they strongly affect the particle spatial distribution and clustering during and after crystallization.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 398: Symposium C – Thermodynamics and Kinetics of Phase Transformations , 1995 , 457
Copyright
Copyright © Materials Research Society 1998

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References

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