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The deformation of polycrystal grains is hampered by the action of nearby grains. Their influence on structural changes under uniaxial compression has been studied using molecular dynamics simulations. [100] single crystals were studied as a characteristic orientation of growth grains. This orientation is most found in products obtained by electron-beam surfacing of aluminum bronze. The patterns of slip, twinning, and the formation of deformation domains are traced depending on the conditions for limiting the shear towards the lateral faces of the sample. Shown, that the shear limitation and the complication of the stress tensor contribute to the earlier development of twinning. [ABSTRACT FROM AUTHOR]

Orientation dependence of deformation band pattern formed on the Cu-1.5Co-3Al single crystal faces during friction sliding in two different non-lubricated sliding regimes against a clean alumina surface and with transferred metal layer was studied. The deformation bands on the crystal faces were arranged in different formations such as rectilinear bands, crossing bands and band mesopacks. The crystallographic orientation of the normal load force and friction force determines the type of a deformation relief formed. The single crystal orientations with respect to normal load axis were [110] and on [110] and [1̅11] samples the preferential slipping by one of the equi-loaded slip planes was observed. [ABSTRACT FROM AUTHOR]

Rocks of the Gabriel mine (East Kazakhstan) belong to intensively modified milonites. These rocks in the Ore Altai are often ore-bearing for metals such as zinc, lead, copper and gold. Milonites are formed by imposing deformations on the original rocks. These rocks are interesting for large studies. Using the EBSD method allows us to investigate the deformation stage of mineral formation more detailed. In this work, we studied sections of quartz porphyroblasts with different volume fractions of pyrite. As a result, we determined the influence of the pyrite volume fraction on the degree of quartz deformation and the possible presence of water in the later stages of mineral. [ABSTRACT FROM AUTHOR]