Using Mössbauer spectroscopy on the surface of Ti—6Al—4V titanium alloy after the ultrasonic impact deformation by the pane of hardened steel, iron-bearing phases such as TiO$_{2}$:Fe$^{2+}$, TiO$_{2}$:Fe$^{3+}$ (rutile), intermetallic FeTi compound, and $\alpha$-Fe are found. The concentration of Fe$^{2+}$ ions practically does not change, during the treatment time from 30 to 120 seconds. Rutile with Fe$^{2+}$ ions is the dominant phase. Its amount and, consequently, the thickness of rutile film on the surface of Ti—6Al—4V titanium alloy increases with treatment time increasing. The amount of other phases, including rutile with Fe$^{3+}$ ions, remains practically constant. As supposed, the other iron-containing phases such as TiO$_{2}$:Fe$^{3+}$, $\alpha$-Fe, and FeTi are present on the treated surface of the alloy in three positions: on the surface of the oxide film of rutile, as a fringing on rutile and alloy border, or under the layer of the rutile film. The intermetallic FeTi phase appears, probably, at the very beginning of the metal pane contact with the surface of the titanium alloy, and its amount does not change with time, because the rutile film spatially protects it. The reduction of the magnetic splitting in the spectrum of Ti—6Al—4V alloy in comparison with splitting in spectrum of ShKh15 steel is conditioned by the small sizes of iron particles, which remained on the processed surface due to adhesion.