Constitutive Model for Large Plastic Deformation of Nanocrystalline Materials

Abstract:

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.

• Periodical: Materials Science Forum (Volume 682)
• Pages: 139-144
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.682.139
• Online since: March 2011
• Authors: Hua Jiang, Jian Qiu Zhou, Rong Tao Zhu
• Keywords: Constitutive Model, Deformation Mechanism, Nanocrystalline Material, Shear Band

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