Shedding some light on the early grain growth regime: About the effect of the initial microstructure on normal grain growth

•The effect of initial microstructures on normal grain growth is investigated.•In the transient growth regime grains with increasing number of faces can be found.•Also changes in the scaled growth law are observed.•Trajectories of individual grains show influence of topological rearrangement events.

In the present paper the effect of the initial microstructure on the coarsening kinetics of normal grain growth is investigated. To that aim, two microstructures characterized by two distinctively different grain size distributions—one following a normal and the other one following a bimodal distribution—are analyzed as they undergo coarsening by means of Monte Carlo Potts model simulations showing different behaviors at early relaxation times but reaching the same quasi-stationary self-similar growth regime for long-time annealing.

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