In an attempt to obtain an estimate of the complex stacking-fault energy, high-resolution transmission electron microscopic observations of a dislocation in TiAl were compared with atomistic calculations of dislocation structures deduced using atomistic potentials. From this comparison, a value of between 470 and 620mJ/m2 was obtained.

Structure of ½<110> Dislocations in γ-TiAl by High Resolution TEM and Embedded Atom Method Modelling. J.P.Simmons, M.J.Mills, S.I.Rao: Materials Research Society Symposium – Proceedings, 1995, 364[1], 137-44