Thermomechanical Control Process and its Effect on Structure and Properties of High Strength Low Alloy Steels

摘要

Low carbon steels microalloyed with small amount of carbide and/or nitride forming elements such as Nb, Ti & V with thermomechanical controlled processing (TMCP) can give fine grained ferrite structure with high strength and superior toughness. The present study was aimed at identifying rolling parameters as well as microstructural characterization for accomplishing high yield strength and high charpy impact property at -60 ℃ by controlling hot rolling parameters and microstructure Grain size distribution was also monitored and related to mechanical properties of steel.