Simulation of the rheological behavior of the 01570C alloy under high-temperature deformation

The paper investigates the possibility of using a previously developed mathematical model of strain resistance to describe the rheological behavior of the 01570C alloy (Russian Standard) of an Al-Mg-Sc-Zr system at 300 °C in the range of strain rates between 0.1 and 5 s⁻¹. The model takes into account hardening due to an increase in dislocation density, as well as the barrier effect of blocking the motion of free dislocations, and softening due to dynamic recovery and dynamic recrystallization. The identification and verification of the model is made by the experimental data of cylindrical specimen compression obtained on a plastometric apparatus built at Institute of Engineering Science, Ural Branch of the Russian Academy of Sciences. According to the verification results, we can conclude that the considered model, with the calculation accuracy acceptable for engineering, describes the rheological behavior of the 01570C alloy at 300 °C for strain rates ranging from 0.1 to 5 s⁻¹.