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Constitutive model for plastic deformation of nanocrystalline materials with shear band

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Abstract

A phase mixture model was used to study the plastic deformation behaviors in hardening stage of nanocrystalline materials. The material was considered as a composite of grain interior phase and grain boundary (GB) phase. The constitutive equations of the two phases were determined in term of their main deformation mechanisms. In softening stage, a shear band deformation mechanism was presented and the corresponding constitutive relation was established. Numerical simulations have shown that the predications fit well with experimental data. The investigation using the finite-element method (FEM) provided a direct insight into quantifying shear localization effect in nanocrystalline materials.

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Acknowledgements

This work was supported by Research Innovation Program for College Graduates of Jiangsu Province (CXZZ11_0342), Natural Science Foundation of Hubei Province (Q20111501) and Key Project of Chinese Ministry of Education (211061).

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Authors and Affiliations

  1. School of Mechanical Engineering, Nanjing University of Technology, Nanjing, Jiangsu, 210009, China

    Shu Zhang, Ying Wang, Hua Jiang & Jianqiu Zhou

  2. Department of Mechanical Engineering, Wuhan Institute of Technology, Wuhan, Hubei, 430070, China

    Jianqiu Zhou

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  1. Shu Zhang
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  2. Ying Wang
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  3. Hua Jiang
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Correspondence to Shu Zhang or Jianqiu Zhou.

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Zhang, S., Wang, Y., Jiang, H. et al. Constitutive model for plastic deformation of nanocrystalline materials with shear band. Meccanica 48, 175–185 (2013). https://doi.org/10.1007/s11012-012-9592-8

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