Structural changes of multiphase low-carbon steel in deformation and heat treatment

The influence of the rolling parameters on the structural and phase transformations and mechanical properties of steel is analyzed. At a particular combination of temperature, strain, and strain rate, fine-grain austenite structure may be obtained, with highly developed polygonal substructure. For low-carbon steel, the best combination of cooling and winding parameters after rolling is as follows: t fr = 800–850°C; t in.co = 750°C; v co = 80°C/s; t wi = 500°C.