Fig. 9: Simulation set-up.
From: Segregation-assisted spinodal and transient spinodal phase separation at grain boundaries

a The large-grain polycrystalline sample and the simulation set-up of a single flat GB are schematically shown. We apply fixed boundary conditions parallel to the GB plane while other boundaries are periodic. b The enthalpy of mixing of Fe–Mn system is shown at 450 °C.