The planes of deformation induced extended planar dislocation boundaries were analyzed in two different coordinate systems, namely the macroscopic system defined by the deformation axes and the crystallographic system given by the crystallographic lattice. The analysis covers single and polycrystals of face-centered cubic metals in 3 deformation modes (rolling, tension and torsion). In the macroscopic system, boundaries lie close to the macroscopically most stressed planes. In the crystallographic system, the boundary plane depended upon the grain/crystal orientation. The boundary planes in both coordinate systems were rationalized based on the slip. The more the slip was concentrated on a slip plane, the closer the boundaries lie to this. The macroscopic preference arose from the macroscopic directionality of the slip. The established relations were applied to (a) prediction of boundary planes from slip patterns and (b) prediction of slip patterns from boundary planes.

Slip Patterns and Preferred Dislocation Boundary Planes. G.Winther: Acta Materialia, 2003, 51[2], 417-29