FE-based analysis for the microstructure evolution in hot bar rolling

A new FE-based analysis model for the microstructure evolution in hot rolli ng is proposed. Incremental formulations for the prediction of microstructu re evolution are coupled with three-dimensional finite element method for t he analysis of plastic deformation and temperature. By using an integrated FE-based model for the evolution of microstructure in hot rolling, cross-se ctional grain size distributions after hot bar rolling are successfully sim ulated. Change in grain size of bar rolled by two-roil mill and three-roil mill, and microstructure evolution related to grain coarsening in bar sizin g mill are shown and discussed.