flow stress

cryogenic treatment

yield strength

microstructure texture

martensitic transformation

dynamic recrystallization

stainless steel

hot rolling

strain hardening

hot ductility

Materials and Manufacturing Processes

Microstructure and tensile deformation behavior of interstitial-free (IF) steel subjected to near-cryogenic (−150°C to −100°C) rolling followed by annealing have been investigated. Twining has been found to be the dominant mode of deformation during rolling. Both the rolled and annealed sample exhibited limited work hardening due to high matrix resistance. In the rolled sample cleavage, nuclei acted as potential fracture initiation site. Annealing has resulted in effective blunting of cleavage nuclei giving rise to large total elongation due to prolonged damage growth process.

On the Plasticity of Interstitial-Free Steel Subjected to Cryogenic Rolling Followed by Annealing