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Potts Model Simulation of Grain Boundary Junction Limited Grain Growth

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Abstract:

The standard Monte Carlo (MC) Potts model is modified regarding the mobility of grain boundaries and their junctions allowing the simulation of a size effect observed in nanocrystalline grain growth. In large simulation studies different properties are measured. For initially very small grains the early growth regime corresponds to a separate coarsening state, which is characterised by an average growth law and a self-similar grain size distribution that both show strong deviations from the parabolic normal grain growth behaviour. The simulation results can be described by a theoretical model based on a statistical mean-field theory for nanocrystalline grain growth.

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Periodical:

Materials Science Forum (Volumes 715-716)

Pages:

623-628

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.715-716.623

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Online since:

April 2012

Authors:

Dana Zöllner, Peter Streitenberger

Keywords:

Mean-Field Theory, Monte-Carlo Simulation, Nanocrystalline Grain Growth, Size Effect

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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