Plastic deformation along the plane with zero resolved shear stress

Atomistic study of ordinary screw dislocations in single-phase and lamellar γ-TiAl

“…Interfacial dislocations may arise to compensate misfit between orientation variants with 120 • and 60 • rotations, to compensate small grown-in deviations from the exact crystallographic misorientation, or as a result of decomposition of impinging crystal dislocations. The structures of the twin boundaries on (111) are preserved by displacements equal to the Burgers vector of the ordinary dislocation [25]. Therefore, the Burgers vectors of the ordinary dislocations are also Burgers vectors of interfacial dislocations, sometimes called DSC dislocations, at the twin boundary.…”