TY - JOUR
T1 - Homogenization method for strength and inelastic behavior of nanocrystalline materials
AU - Capolungo, L.
AU - Jochum, C.
AU - Cherkaoui, M.
AU - Qu, J.
PY - 2005/1
Y1 - 2005/1
N2 - Homogenization techniques are used for modeling the so-called "breakdown" of the Hall-Petch law in the case of nanocrystalline (NC) materials. In this paper, the NC material is modeled as a composite material composed of two phases: the grain core (inclusion) and the grain boundaries (matrix). The deformation of the inclusion phase has a viscoplastic component that takes into account the dislocation glide mechanism as well as Coble creep. The boundary phase is modeled as an amorphous material with a perfect elastic-plastic behavior. An application of the model is developed on pure copper under tensile load. The results are compared with various experimental data.
AB - Homogenization techniques are used for modeling the so-called "breakdown" of the Hall-Petch law in the case of nanocrystalline (NC) materials. In this paper, the NC material is modeled as a composite material composed of two phases: the grain core (inclusion) and the grain boundaries (matrix). The deformation of the inclusion phase has a viscoplastic component that takes into account the dislocation glide mechanism as well as Coble creep. The boundary phase is modeled as an amorphous material with a perfect elastic-plastic behavior. An application of the model is developed on pure copper under tensile load. The results are compared with various experimental data.
KW - Composite materials
KW - Hall-Petch
KW - Homogenization
KW - Nanocrystalline materials
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U2 - 10.1016/j.ijplas.2004.02.002
DO - 10.1016/j.ijplas.2004.02.002
M3 - Article
AN - SCOPUS:4544278142
SN - 0749-6419
VL - 21
SP - 67
EP - 82
JO - International Journal of Plasticity
JF - International Journal of Plasticity
IS - 1
ER -