J. Phys. IV France 10 (2000) Pr9-63-Pr9-68
Strain rate dependence of strength-differential effect in two steelsL.W. Meyer and S. Abdel-Malek
Lehrstuhl Werkstoffe des Maschinenbaus, TU Chemnitz, 09107 Chemnitz, Germany
Tensile and compression tests have been performed on specimens of steels 30CrNiMo8 and 25CrMo4 at strain rates from quasi-static to high strain rates up to ≈ 5x103s-1. The flow stress under tensile loading shows a different behaviour than that under compression. Constitutive equations are developed to describe the behaviour in both cases. The strength-differential values are calculated from experimental data and from constitutive equations, and are presented as a function of strain and strain rate.
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