A comparative study on Arrhenius-type constitutive model and artificial neural network model to predict high-temperature deformation behaviour in Aermet100 steel

► The influence of strain on flow stress was incorporated in material constants. ► The predictability of two constitutive models was evaluated. ► The Arrhenius-type constitutive model is broken down at the instability regimes. ► The ANN model can track the experimental data at all regimes.