The transmission electron microscopic images of Al-rich L10 samples which had been deformed at up to 400C exhibited faint fringes which spread, without interruption, all over thin foils. Unlike the fringe systems which were usually associated with stacking faults and/or antiphase boundaries, these faint striations exhibited no clear spatial limitations due to intersection with free surfaces or due to dislocations. The striation contrast was related to slip on {111} planes, in the <110] or <011] direction. It originated from modest atomic relaxations. The generation of the defects which were responsible for the striations was explained in terms of non-localized slip in the presence of a short-range ordered phase, Al5Ti3, in Al-rich material.

Planar Debris in Plastically Deformed Al-Rich γ-TiAl. F.Grégori, P.Veyssière: Philosophical Magazine A, 1999, 79[2], 403-21