The effect of annealing upon (111) super-dislocations that had been introduced by prior deformation was studied in alloys that were based upon Fe3Al. These were a binary Fe-28Al alloy, a ternary Fe-28Al-5at%Cr alloy, and a more complex alloy which was based upon the latter composition. It was found that the (111) super-dislocations showed signs of relaxation of the antiphase boundary between the partials; with the extent of relaxation depending appreciably upon the alloy in question. After longer annealing, especially at high temperatures, the <111> super-dislocations reacted so as to produce <100> super-dislocations. The antiphase boundaries between the new partials also provided evidence of their relaxation at longer times and higher temperatures. The results depended sensitively upon alloying additions, and the effect of these upon factors such as ordering stability and the extent of solute segregation to antiphase boundaries was considered.

J.F.Perez, D.G.Morris: Philosophical Magazine A, 1996, 74[3], 665-84