The temperature dependence of the yield stress of the Ni3Al phase with its L12 superstructure was determined in many respects by the structure of glide super-dislocations and planar defects of these super-dislocations involved in the L12 superstructure. A critical analysis was made of the then state-of-the-art in the solution of the problem regarding the energy of antiphase boundaries in planes of an octahedron and a cube, as well as the energy of stacking faults in the Ni3Al phase.

Energy of Planar Defects in the Ni3Al Phase: Theory and Experiment. Kozlov, E.V., Nikonenko, E.L., Koneva, N.A.: Bulletin of the Russian Academy of Sciences: Physics, 2007, 71[2], 198-202