Grain Growth and the Effect of Different Time Scales

TL;DR

This paper investigates grain boundary dynamics in polycrystalline materials through modeling and numerical simulations, highlighting the impact of different time scales on grain growth and structure.

Contribution

It introduces two models incorporating lattice misorientations and triple junction drag, with extensive numerical analysis and experimental validation.

Findings

Models reveal the influence of time scales on grain growth

Numerical simulations match experimental observations

Grain boundary behavior affects material properties

Abstract

Many technologically useful materials are polycrystals composed of a myriad of small monocrystalline grains separated by grain boundaries. Dynamics of grain boundaries play a crucial role in determining the grain structure and defining the materials properties across multiple scales. In this work, we consider two models for the motion of grain boundaries with the dynamic lattice misorientations and the triple junctions drag, and we conduct extensive numerical study of the models, as well as present relevant experimental results of grain growth in thin films.