“…Furthermore, most of the simulation works 11,12 reported in the literature, using the phase field method based on the nonlinear Cahn-Hilliard equation for hypothetic binary A-B alloys, use mathematical functions to model the spinodal curve in a free energy vs. composition diagram, but these ones do not represent thermodynamic parameters which can be associated with a specific alloy system. Therefore, it is necessary to use free energy functions based on thermodynamic solution models in order to approach the microstructure simulation to that taking place in real alloy systems 13 . Thus, the goal of this work is to analyze the phase decomposition process in a binary A-B alloy system using both the linear and nonlinear Cahn-Hilliard equations, in order to understand the effect of the equation parameters on the microstructural evolution and growth kinetics for this transformation.…”