A disruption mechanism was proposed for the long-range atomic order in alloys having a L12 superlattice. The disruption was supposed to be caused by an accumulation of super-dislocations during plastic deformation. The rate of increase in antiphase-boundary area, which resulted from the multiplication of super-dislocations, was estimated for cases where the spacing between super-partial dislocations was either constant or strain-dependent. Equations were derived for the rate of change of the degree of long-range order when monocrystalline L12 superlattice alloys were subjected to deformation.

Strain-Induced Disruption of Long-Range Order due to Generation of Super-Dislocations in L12-Superlattice Alloys. V.A.Starenchenko, O.D.Pantyukhova S.V.Starenchenko, S.N.Kolupaeva: Russian Physics Journal, 2000, 43[12], 1003-8