The flow behaviors of CLAM steel at high temperature

The flow behaviors of CLAM steel were investigated to obtain the forming simulation parameters. The hot deformation experiment was performed under the strain rate of 0.001-5 s−1 and the temperature of 850-1050 °C on Gleeble-1500 thermo-simulation machine. The results showed that the flow stress decreased with the increasing deformation temperature but increased with the increasing strain rate. Moreover, material constants α, n, ln A and activation energy Q were calculated as a function of strain. Constitutive equation of Arrhenius-type allowing for the effects of strain, strain rate and temperature was developed to describe the hot deformation behaviors of CLAM steel. The flow stress of CLAM steel predicted by the proposed constitutive equation highly coincided with the experimental results, which demonstrated that the developed constitutive equation could precisely predict the flow behaviors of CLAM steel.