Predictive Capabilities and Limitations of Continuum Micromechanics

  • Mohammed CherkaouiEmail author
  • Laurent Capolungo
Part of the Springer Series in Materials Science book series (SSMATERIALS, volume 112)

As discussed in Chapter 3, the grain size dependence of mechanical response of nanocrystalline (NC) materials is caused by their local deformation mechanisms (e.g., Coble creep, twinning, grain boundary dislocation emission, grain boundary sliding) that rely on the typical nanoscale structure of grain boundaries and their extremely high-volume fraction. Although these deformation mechanisms have been highlighted by experimental observations and molecular dynamics simulations, it is rarely possible to directly relate their individual contributions to the macroscopic response of the material. This is primarily due to the fact that the scale and boundary conditions involved in molecular simulations are several orders of magnitude different from those in real experiments or of typical polycrystalline domains of interest.


Slip System Representative Volume Element Tangent Modulus Infinite Medium Ellipsoidal Inclusion 
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© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  1. 1.Georgia Institute of TechnologyAtlantaUSA
  2. 2.Los Alamos National LaboratoryLos AlamosUSA

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