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Multiscale plasticity in gradient polycrystalline based on discrete dislocation dynamics
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DOI：10.1016/j.mechmat.2025.105560.png)
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Abstract
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• Multiscale dislocation model is developed to investigate the plastic behavior of polycrystalline materials. • Gradient polycrystalline grained materials exhibit the characteristic of gradient yield behavior. • A weighted effective grain size is developed for gradient grained materials to expand the application of Hall-Petch relation. • Numerical simulations reveal the plastic performance of gradient grained materials when subjected to thermal stress.
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