A study of fcc alloys using electron microscopy and tensile deformation showed a reduction in the stacking-fault energy from the value for Ni (which was lower than previously thought) to 75mJ/m2 for 15 to 40wt%Cr (table 4). The apparent activation volumes and energies instead exhibited a continuous decrease with increasing Cr content, although deformation models based upon dislocation intersection and cross-slip suggested larger values when the dissociation of dislocations increased.

Energies de Défaut d'Empilement et Mécanismes de Déformation dans les Alliages Nickel-Chrome. N.Clement, P.Coulomb: Philosophical Magazine, 1974, 30[3], 663-72

Table 5

Stacking-Fault Energies of Ni-Cr-Fe Alloys