Abstract
A constitutive model is presented to characterize the deformation behavior of materials at elevated temperatures that undergo dynamic recovery. Hot torsion tests were utilized to validate the constitutive equations. The tests were conducted with the material of AA5083 over a range of twist rate from 0.013 to 13.70 rev/s and for each twist rate at an initial temperature range of 350°C to 550°C, respectively. The material constants determination methods are demonstrated with the proposed linear regression and the nonlinear iteration formats. A good agreement between the experimental data and the predicted results has been achieved
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