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- W4287333318 abstract "The size distribution of grains is a fundamental characteristic of polycrystalline solids. In the absence of deformation, the grain-size distribution is controlled by normal grain growth. The canonical model of normal grain growth, developed by Hillert, predicts a grain-size distribution that bears a systematic discrepancy with observed distributions. To address this, we propose a change to the Hillert model that accounts for the influence of heterogeneity in the local environment of grains. In our model, each grain evolves in response to its own local environment of neighbouring grains, rather than to the global population of grains. The local environment of each grain evolves according to an Ornstein-Uhlenbeck stochastic process. Our results are consistent with accepted grain-growth kinetics. Crucially, our model indicates that the size of relatively large grains evolves as a random walk due to the inherent variability in their local environments. This leads to a broader grain-size distribution than the Hillert model and indicates that heterogeneity has a critical influence on the evolution of microstructure." @default.
- W4287333318 created "2022-07-25" @default.
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- W4287333318 date "2021-02-02" @default.
- W4287333318 modified "2023-09-29" @default.
- W4287333318 title "The role of grain-environment heterogeneity in normal grain growth: a stochastic approach" @default.
- W4287333318 doi "https://doi.org/10.48550/arxiv.2102.01798" @default.
- W4287333318 hasPublicationYear "2021" @default.
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