Equal-channel angular sheet extrusion of interstitial-free (IF) steel: Microstructural evolution and mechanical properties

► IF-steel sheets can successfully be processed in the continuous manner using the equal-channel angular sheet extrusion (ECASE). ► The ECASE produces the microstructures including dislocation cell and micro-shear bands inside the grains with mainly low-angle grain boundaries. ► The ECASE results in a considerable increase in the strength but limited ductility. ► A good strength-ductility balance in the ECASE-processed IF-steel sheets can be managed with a suitable annealing parameters.