Modelling of structure changes in TRIP type steel during hot deformation

Physical modelling of the changes occurring in the structure of low-alloy C-Mn-Al TRIP-aided steel during hot-rolling were presented in this paper. An influence of deformation and controlled cooling parameters on the microstructure of the tested steel was determined. Metallographic research showed continuous refinement of structure in consecutive stage of deformation. Applied parameters of cooling allowed obtaining multi-phase structure containing ferrite, bainite, and also retained austenite.