... of grain boundary behavior during plastic deformation have focused mainly on three distinct configurations: (i) bicrystal models, (ii) columnar nanocrystalline models, and (iii) 3D nanocrystalline models. Bicrystal models facilitate the isolation of specific mechanisms that occur at the grain boundary...

...Eric Loomis; Pedro Peralta; Damian C. Swift Two methods have been used to simulate 2D elastic wave scattering in nickel aluminide ( NiAl ) bicrystals to study effects of grain boundaries and material anisotropy on elastic wave propagation. Scattering angles and amplitude ratios of the reflected...

...Douglas E. Spearot; Karl I. Jacob; David L. McDowell; Steven J. Plimpton Molecular dynamics calculations are performed to study the effect of deformation sequence and history on the inelastic behavior of copper interfaces on the nanoscale. An asymmetric 45 deg tilt bicrystal interface is examined...

...B. J. Lee; S. Ahzi; D. M. Parks In this paper, intermediate modeling of polycrystalline plasticity is proposed for rigid viscoplatic large deformations. This approach is based on the use of a bicrystal as the elementary local element representing the polycrystal. The local homogenization...