A model of a polycrystalline material is studied, where each grain consists of several zones
with different plastic properties. The size and configuration of the zones as well as their …

Under consideration is the stress field arising in a plastically deformed polycrystal since its
misoriented grains are subjected to different plastic strains. To analyse that, a two …

In this paper we investigate the nonuniform and localized deformation of a polycrystalline
aggregate under plane-strain tension. A finite element analysis based on rate-dependent …

This is a study of plastic strain localization, surface roughening and of the origin of these
phenomena in polycrystals. An oligocrystal aluminum sample with a single quasi-2D layer of …

The distribution of (elastic) lattice strains following plastic deformation of an aluminium alloy
is examined using finite element simulations of aggregates with individually resolved …

Most engineering materials possess a polycrystalline structure. Under load the anisotropy of
the constituent grains leads to strong inhomogeneities of stresses and strains on the grain …

A three-dimensional finite element model of the large elastoplastic deformation of crystalline
aggregates has been developped in order to analyse and predict the heterogeneity of the …

Metallic materials generally possess a polycrystalline structure. Under load, the anisotropy
and the different crystallographic orientation of the constituent grains cause strong …

A model is established for plastic deformation of crystals containing shearable ordered
precipitates. The precipitate structure undergoes an evolution caused by enhanced growth …

Detailed simulations of grain deformation and crystal orientation evolution in a small region
at the interior of polycrystal have been performed. The finite element model accounts for …