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Meeting TMS Specialty Congress 2025
Symposium 8th World Congress on Integrated Computational Materials Engineering (ICME 2025)
Presentation Title Observing and Predicting Grain Growth in Polycrystals
Author(s) Gregory S. Rohrer
On-Site Speaker (Planned) Gregory S. Rohrer
Abstract Scope Predictive models for grain growth during annealing would be useful in the ICME context because they have the potential to speed the development of new materials. Recent three-dimensional studies of grain growth have shown no correlation between curvature and migration velocity, contradicting the observed migration behavior of individual grain boundaries in bicrystals. Two types of simulations, atomistic molecular dynamics and continuum threshold dynamics have been instantiated with experimental observations and used to simulate growth under different conditions. Both of these simulations reproduce the independence of curvature and velocity observed in the experiment, as well as a reduction in energy by the replacement high energy grain boundaries with lower energy grain boundaries. A more realistic driving force for grain growth will be proposed and the prospect for predictive grain growth simulations will be discussed.
Proceedings Inclusion? Undecided

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