Experimental data on the temperature and orientational dependence of deformation behaviour, dislocation structure and fracture of single-crystal Ti3Al oriented for basal slip were reviewed. A dislocation model for the formation of microcracks of shear type in the basal-plane slip-band was described. Results were reported which were based upon an analysis of the structure of cores of a super-dislocations lying in the basal plane and on an estimation of the energies of decohesion and of unstable stacking faults; performed by computer simulation using N-particle potentials of interatomic interaction as applied to the description of plastic deformation. This permitted the explanation of the entire body of available experimental data.

Theoretical and Experimental Study of Processes of Deformation and Fracture in Single-Crystal Ti3Al Oriented for the Basal Slip. L.I.Yakovenkova, L.E.Karkina: Physics of Metals and Metallography, 2007, 103[6], 531-4