Abstract:
The mechanical properties of 0.13wt%C structural steel after intercritical normalizing heat treatments were investigated in the work reported here. The steel samples used for the present work were subjected to intercritical normalizing heat treatment at 740, 780, and 810oC for 1, 2, 3, 4, and 5 hours at each temperature. The mechanical properties were determined. The results showed that for the steel under study higher intercritical normalizing temperature and longer holding time gave rise to lower strength and notch impact toughness properties but higher hardness and ductility properties. Hardness and toughness properties exhibited mirror behavior to each other.
