It was shown that certain types of dipolar debris, usually explained in terms of a jog-trailing process, resulted from the impact of a dislocation upon individual loops or loop strings. A mechanism for spontaneous patterning in single-slip was proposed which was based upon the capture of dislocations of both signs by a string; where they annihilated in pairs, adding interlaced loop strings to the initial embryo and gradually building up a 3-dimensional wall. The process was expected to apply to any crystal where the free-flight distance in the cross-slip plane was moderate. A mechanism for the conservative elimination of a loop string by a single dislocation was proposed.

Properties of <110]{111} Slip in Al-Rich γ-TiAl Deformed at Room Temperature - III. The Role of Loop Strings in the Pinning and the Patterning of Dislocations. P.Veyssière, F.Grégori: Philosophical Magazine A, 2002, 82[3], 579-90