The effect of super-dislocation velocities upon the thermal hardening of alloys having the L12 superlattice was studied. The activation energy for the self-stopping of dislocations due to changes in the elastic fields of moving dislocations, as compared with immobile dislocations, was estimated. The velocity of a dislocation loop element was calculated, while taking account of interactions with dislocations. It was shown that, under a deformation stress, super-dislocations could move at almost the speed of sound. This could reduce the activation energy, for the self-stopping of super-dislocations, by a factor of between 1.3 and 5.

Dislocation Dynamics and Thermal Hardening of Alloys with an L12 Superlattice. V.A.Starenchenko, Y.V.Soloveva, Y.A.Abzaev, L.E.Popov: Izvestiya Vysshikh Uchebnykh Zavedenii Fizika, 1996, 39[2], 57-61 (Russian Physics Journal, 1996, 39[2], 153-6)