Numerical Modeling of Microstructural Formation and

We develop a numerical model for the prediction of the microstructure formation and deformation behaviour of an Fe-C alloy by coupling the phase-field (PF) method with the finite element method based on the homogenization method (FEH). The PF simulation clarifies the growth of the ferrite phase during the γ / α transformation in the Fe-C alloy. The FEH analysis employs the morphology of the α phase and is used to evaluate the mechanical properties of the Fe-C alloy. Furthermore, the FEH analysis is performed to investigate the effects of the configuration of microstructures on the deformation behaviour. The results show that the deformation behaviour dependence on the morphology of the α phase is quantitatively in agreement with experimental results. This study suggests the applicability of the proposed model, which enables us to systematically evaluate the mechanical properties of the Fe-C alloy accompanying with the morphological change of the microstructures