Direct observations were made of dislocation dissociation in the γ’ matrix of a complex superalloy containing a high fraction of precipitates. From the separation of the partials, it was deduced that the stacking-fault energy was 24mJ/m2.

Some Considerations Regarding the Creep Crack Growth Threshold. M.D.Thouless, A.G.Evans: Scripta Metallurgica, 1984, 18[10], 1171-80