The structural-phase state in the zone of localization of plastic deformation of the titanium-aluminum composite subjected to high-speed shock load was studied.

A sinusoidal nature of the deformation of the boundary of the composite layers beyond the shear strain band, indicating the localization of plastic deformation waves in the stress concentration zone, is revealed. It is shown that the main phase forming in the zone of localization of plastic deformation is the atomically ordered metastable phase Al3Ti, with the structure Pm3m.