Misorientation texture development during grain growth. Part I: Simulation and experiment
نویسندگان
چکیده
Grain growth in two and three dimensions with anisotropic interfacial properties was simulated using the Monte Carlo method. The relative effects of grain boundary energy and mobility anisotropy on numberand area-weighted misorientation distribution functions (MDFs) were compared. Results indicate that energy anisotropy has a measurable effect on misorientation texture development, while mobility anisotropy does not. Qualitatively similar results are obtained in all simulations regardless of dimensionality or crystal symmetry. Microstructures with random orientation texture appear to evolve steady-state MDFs, while those with a preferred orientation do not. Experimentally measured numberand area-weighted MDFs in polycrystalline magnesia are shown to be comparable to those measured in our simulations. 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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Misorientation texture development during grain growth. Part II: Theory
A critical event model for the evolution of numberand area-weighted misorientation distribution functions (MDFs) during grain growth is proposed. Predictions from the model are compared to numberand area-weighted MDFs measured in Monte Carlo simulations with anisotropic interfacial properties and several initial orientation distributions, as well as a dense polycrystalline magnesia sample. The ...
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