The structure of the core of a 1/6<2¯1▪0> super-partial dislocation in the prism plane of the D019 superlattice was studied by computer simulation. Atomic interaction potentials for Ti3Al were derived with the embedded atom method. The core of the super-partial dislocation was found to have 3 different configurations (of I’, I and II types) in non-equivalent prism planes {0¯1▪0}. For screw and edge dislocations, the core was planar in type-I’ prism planes and non-planar in prism planes of type I and II. The results of simulation were compared with experimental data on super-dislocation mobility in Ti3Al.

The Atomic Structure of the 1/3<2¯1▪0> Superdislocation Core and Prismatic Slip in Ti3Al. L.I.Yakovenkova, L.E.Karkina, M.Y.Rabovskaya: Technical Physics, 2003, 48[1], 56-62