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Cross-slip is treated as a deterministic, mechanically activated process governed by the applied stress, by the interaction force between approaching screw dislocations of the opposite sign and by the line tension related to the persistent slip band channel width. The dislocations are modeled as moving polygons. In the evaluation of the critical cross-slip annihilation distance and the saturation...
The proposed crystal plasticity model outlines a possible mechanism of a material response under severe plastic deformation as observed in high-pressure torsion experiments. A simplified version of the model based on an assumption of uniform deformation of plane-strain double slip reveals rotations of slip systems caused by the imposed shear strain. An axial compression and a shear stress of twist...
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