The (01•2) twin interface was investigated, and the atomic structure of the boundary was shown to correspond to a mirror-plane configuration. Two main types of defect were found in the twin interface. These were glissile dislocations that were associated with a 2d(01•2) step height, and sessile dislocations that were associated with larger step heights that accommodated angular deviations from the twin misorientation. Transmission electron microscopic observations were made of the interactions of slip dislocations with twin interfaces. It was shown that the matrix dislocations split into several components with smaller Burgers vectors. Twinning dislocations were produced as a result of the decomposition. This process led to the formation of large steps.

S.Lay, G.Nouet: Materials Science Forum, 1996, 207-209, 273-6