ABSTRACT
The microstructural evolution of a two-phase polycrystal was studied in two dimensions by computer simulations based on a continuum diffuse-interface model. The temporal and spatial evolution of orientation and concentration field variables were obtained through a numerical solution of the time-dependent Ginzburg-Landau (TDGL) equations. The microstructural evolution in a two-phase system with conserved volume fraction under different energetic conditions, i.e., different ratios of grain boundary energies and interfacial energies, was investigated. It was revealed that the grain topology and topological transformations in two-phase solids can be dramatically different from those in single-phase systems.
