A level-set formulation to simulate diffusive solid/solid phase transformation in polycrystalline metallic materials - Application to austenite decomposition in steels

Numerous full-field numerical methods exist concerning the digital description of polycrystalline materials and modeling their evolution during thermomechanical treatments. However, these strategies are globally dedicated to recrystallization grain growth for single-phase materials, or phase transformations without considering related phenomena. A generalized framework capable making predictions in a multi-phase context while respecting concomitance different microstructural mechanisms is thus prime interest. novel finite element level-set based formulation proposed principally simulate diffusive solid–solid transformation at mesoscopic scale two-phase metallic alloys. global kinetic framework, accounting other concomitant such as considered this model. The shown be promising through couple illustrative 1D 2D test cases austenite decomposition steels compared with ThermoCalc estimations.