Effect of strain on the microstructure and mechanical properties of multi-pass warm caliber rolled low carbon steel

Development of microstructure and mechanical properties during multi-pass warm caliber rolling of low carbon steel has been investigated as a function of strain. While tensile and lower yield strengths increased with strain monotonically, impact properties deteriorated up to a strain of 0.7 and then drastically improved beyond a strain of 1.5. Based on this study, it is concluded that severe plastic deformation is not essential for obtaining useful engineering products with a good combination of strength and impact properties for the present steel.