Prediction of Flow Stress Behavior of 70Cr3Mo Back-Up Roll Steel Using Modified Zerilli-Armstrong Model

Fa Cai Ren; Jun Chen; Fei Chen

doi:10.4028/www.scientific.net/AMM.552.247

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 552Prediction of Flow Stress Behavior of 70Cr3Mo...

Prediction of Flow Stress Behavior of 70Cr3Mo Back-Up Roll Steel Using Modified Zerilli-Armstrong Model

Abstract:

The stress-strain data from hot compression tests over a wide range of temperatures (1173–1473 K at an interval of 100 K) and strain rates (0.01, 0.1, 1 and 10 s^-1) were conducted using Gleeble-1500D thermo-mechanical simulator. A modified Zerilli-Armstrong constitutive model was developed using the experimental data of 70Cr3Mo back-up roll steel. The predictable efficiency of this model was evaluated by correlation coefficient and the value was 0.9902.