New geometrical features of 1/6<112] faulted dipolar loops were observed in a 52at%Al alloy which was deformed at 77K. It was observed that the 1/6<¯1¯12] dipole could switch its alignment from <¯101] to <0¯11], and  vice versa. Loops which were aligned along both <¯101] and <0¯11] could also be created by the same parent super-dislocation along its line. During further movement of the parent dislocation, the 2 loops could become attached to each other at the meeting point. No extra dislocation debris or segments were created at the turning point or the attachment site. It was predicted that the particular features could be created only under a favorable stress, and no such features were expected for 1/3<211] faulted dipolar loops.

On the Formation Mechanism of Faulted Dipolar Loops in γ-TiAl Y.G.Zhang, C.H.Lei, P.Li, C.Q.Chen, M.C.Chaturvedi: Philosophical Magazine Letters, 1998, 77[1], 33-8