Weak-beam transmission electron microscopic images, after high-temperature creep deformation, of dissociated super-dislocations which interacted with incoherent Y2O3 dispersoids were presented for the first time. Preliminary observations concerning the contrast and behavior of separate super-partials were made which promised to extend the understanding of dispersion strengthening in ordered materials.

TEM-Study of the Interaction between Superdislocations and Dispersoids in a Ni3Al Alloy. Behr, R., Mayer, J., Arzt, E.: Scripta Materialia, 1997, 36[3], 341-5