MODELING OF PLASTIC-FLOW, HEAT-TRANSFER AND MICROSTRUCTURAL EVOLUTIONDURING ROLLING OF EUTECTOID STEEL RODS

A study was undertaken in an attempt to quantitatively describe the ro lling process of eutectoid steel rods. Finite element method was emplo yed to model plastic flow and heat transfer in the deformed material, and heat transfer during cooling to ambient temperature. The numerical calculation gave an assessment of the strain, strain rate and tempera ture distributions in the work piece. This allowed the prediction of t he austenite microstructure evolution during the process. Finally, the relationships describing the microstructure-mechanical properties wer e used to quantitatively characterize the influence of processing para meters on strength of rods after rolling.