Constitutive Model for Large Plastic Deformation of Nanocrystalline Materials
A constitutive model was presented for nanocrystalline metallic materials that can experience large plastic deformation with shear band. The model was composed of two parts for different deformation stage: hardening stage and softening stage. In the hardening stage, the phase mixture model was used, and in the softening stage, a shear band deformation mechanism was proposed. Based on the model presented, numerical simulations were carried out to prove that the predications kept in good agreement with experimental data.
Jing Tao Wang
H. Jiang et al., "Constitutive Model for Large Plastic Deformation of Nanocrystalline Materials", Materials Science Forum, Vol. 682, pp. 139-144, 2011