Simulation of shear banding and texture evolution in fcc-fcc heterophase co-deformation

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  Texture and microstructure evolution in a plane strain compressed fcc-fcc metal matrix composite (Cu-Ag) with a heterophase microstructure was studied using crystal plasticity finite element simulations.Lattice reorientations induced by both crystallographic (dislocation slip and twinning) and non-crystallographic (shear banding) mechanisms are addressed.First, simulations on a polycrystalline composite are made.Quite similar texture trends are observed for the composites and for the individual single-phase materials, namely, copper-type texture components in the Cu phase and brass-type texture components in the Ag phase.This result differs from experimental data that show less copper-type and more brass-type textures in both phases for the composite material.
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