|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Grain Boundaries and Interfaces: Metastability, Disorder, and Non-Equilibrium Behavior
||Effect of Effective Range of Precipitate on Final Grain Radius of Grain Growth Simulation Based on the Local Curvature Multi-vertex Model
||Shota Morimoto, Shuichi Nakamura
|On-Site Speaker (Planned)
The local curvature multi-vertex model is an effective model to describe grain growth under the existence of precipitates, which is also applied to some industrial materials. In the model, it is possible to evaluate the free energy changes with movements of grain boundaries by introducing the concept of effective range of a precipitate on the matrix, composed of precipitate radius rp and its effective length reff, and grain growth is simulated based on the evaluated free energy changes. In order to clarify roles of the effective range on grain growth, we investigate Rg: average grain radius in a final state of the simulations under various conditions of rp and reff. As a result, Rg is a function of a pinning parameter k(=reff/rp) that is the independent variable of the pinning criteria whether a grain boundary is pinned by a precipitate, and becomes larger with the increase of k.
||Modeling and Simulation, Computational Materials Science & Engineering, Iron and Steel