Grain microstructure evolution in two-dimensional polycrystals under limited junction mobility

Grain growth in two-dimensional nanocrystalline polycrystals is modelled by a modification of the Monte Carlo Potts method, such that each type of junction-adjacent lattice points (grain-boundary-adjacent and triple-point-adjacent) is assigned its own specific mobility. It is shown that limited triple junction mobility induces a drag effect, yielding linear growth kinetics and a topology clearly deviating from normal grain growth but in agreement with experimental and theoretical studies.