Generalized splitting of dislocations

Abstract

The concept of splitting of dislocations in generalized by the assumption that generalized intrinsic stacking faults, i.e. faults which are unstable as infinite planar defects, can occur in the dissociation of dislocations. The Burgers vectors of the partials are then not defined on the basis of the geometry of the lattice only, but are determined by the dependence of the energy of the generalized stacking fault on the displacement vector f, i.e. by the γ surface (Vítek 1968). The generalized splittings are discussed in detail for {111} planes in f.c.c. crystals and for {110} as well as {112} planes in b.c.c. crystals.