Constitutive Modeling of Hot Deformation of Carbon Steels in The Intercritical Zone

A previous constitutive modeling for single-phase steels is extended using the mixing law to predict behavior of hot deformation in dual phase ferritic-austenitic intercritical zone Fe-C-Mn-Si alloys. Mixing considers two phases instead one, so one formula was modified. The constant’s values used represents average same conditions austenitic and ferritic model. amount each determined as function temperature chemical composition. developed validated by comparing theoretical stress-strain curves with experimental isothermal uniaxial compression tests 1008 1035 carbon at different temperatures strain rates. were carried out a dilatometer load rate 10-3, 10-2 10-1 s-1. good agreement obtained between calculated results over stages hardening. Microstructural analysis also relate microstructure steels. Finally, general equation has been proposed zone.