It was recalled that, due to their interactions with antiphase domain boundaries, super-dislocations could move as effectively uncoupled super-partial dislocations in ordered structures. It was shown that there was a critical domain size below which this would occur, regardless of the grain size and antiphase boundary energy. The analysis also indicated that, because of interactions between super-dislocations and domain boundaries, the stress which was required to move a super-dislocation on a so-called fresh slip plane was a maximum. Once super-dislocations had glided over a slip plane, an increasingly easy slip channel was created for following super-dislocations which glided on the same plane. Planar slip was therefore expected. The probability of planar slip increased with decreasing antiphase domain size.

The Interaction between Extended Dislocations and Antiphase Domain Boundaries - II. Uncoupled Super-Partial Dislocations and Planar Slip. T.S.Rong, M.Aindow, I.P.Jones: Intermetallics, 2001, 9[6], 507-14