The paper presents the results of a study on the fretting corrosion effect on strength as per the diagrams of
material fatigue of low-cycle and high-cycle loading. An experimental study of the effect of fretting corrosion
on fatigue of a titanium alloy VT3-1 showed that, when choosing a particular technological method to increase
fatigue resistance of gas turbine engine parts operating under fretting corrosion conditions, it is necessary to
take into account the fact that fretting itself is intensive strengthening and at the same time a softening factor
affecting the surface layers of the material. Technological methods of surface plastic deformation treatment
result in a significant change in the parameters of metal surface layer state, which depends on both the type
and duration of treatment. If the power and time parameters of processing are too high, the surface may be
re-cold worked and the surface layer of the material almost completely exhausts the reserve of plasticity, as
a result dangerous microcracks occur, and the formation of particles of flaking metal emerge. Possible ways
using technological methods have been suggested by the authors to improve fretting strength of part surfaces
operating under fretting corrosion conditions.