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Acta Mechanica Solida Sinica

, Volume 21, Issue 3, pp 189–197 | Cite as

Simulations of Mechanical Behavior of Polycrystalline Copper with Nano-Twins

  • Bo Wu
  • Yueguang Wei
Article

Abstract

Mechanical behavior and microstructure evolution of polycrystalline copper with nano-twins were investigated in the present work by finite element simulations. The fracture of grain boundaries are described by a cohesive interface constitutive model based on the strain gradient plasticity theory. A systematic study of the strength and ductility for different grain sizes and twin lamellae distributions is performed. The results show that the material strength and ductility strongly depend on the grain size and the distribution of twin lamellae microstructures in the polycrystalline copper.

Key Words

nanocrystalline twinned copper mechanical behavior cohesive model finite element simulation 

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Copyright information

© The Chinese Society of Theoretical and Applied Mechanics and Technology 2008

Authors and Affiliations

  1. 1.State-Key Laboratory of Nonlinear MechanicsInstitute of Mechanics, Chinese Academy of SciencesBeijingChina

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