It was recalled that analytical models for the critical resolved shear stress of a crystal always involved an assumed line tension. However, this variable was only a rough approximation to the elastic self-interaction of a dislocation. It also strongly depended upon the dislocation type, and this led to various predictions of the critical resolved shear stress. Computer simulations were used to clarify which dislocation type governed the critical resolved shear stress in the case of γ’-strengthened Ni-based superalloys.

Computer Simulations of the Dislocation Glide in a γ-Strengthened Superalloy - the Effects of the Dislocation Character. V.Mohles, E.Nembach: Zeitschrift für Metallkunde, 1999, 90[11], 896-900