||Results of an analysis of effect of wearing type on surface structural changes of a Ni3Al
intermetallic alloy, are shown in the present paper. A microstructure evaluation was carried out by
Quanta 3D FEG field emission gun scanning electron microscope (FEG SEM) equipped with an
integrated EDS/WDS/EBSD system. The Ni3Al-based intermetallic alloy with an addition of boron,
zirconium and chromium was examined. The investigated material had γ’ single-phase, ordered
solid solution structure with 20 μm grain size. An electron backscatter diffraction (EBSD) method
was applied to visualize surface structural changes upon an abrasive, a cavitational and a
tribological wearing of the material.
An observation of surface layer after the abrasive wear was carried out on samples examined in
loose abradant by T-07 tester and according to GOST 23.2008-79 norm. An analysis of cavitational
wear on changes in the near surface area of Ni3Al-based alloy was performed on an impact-jet
stand. Observed structural changes were described based on results of the SEM/EBSD complex
structural examination and hardness measurements. It was found, that the EBSD is an effective and
sensitive method that allows estimating surface strain introduced during analyzed wearing types.