Prediction of austenite grain growth during hot rolling of 0.028% Nb steel

Abstract

Effects of rolling temperatures and deformation on the grain growth predictions of hot rolled Nb Steel (A572 Grade 50) were investigated. Hot rolling process was conducted by using a laboratory hot rolling mill, in which three different kinds of rolling temperatures and strain were applied. Then microstructure studies are performed and the effects of process parameter are studied. The results showed that increase the temperature and strain will decrease the austenite grain size with a non significant affect of delay time prior to quenching after deformation.