Engineering Physics Annotation << Back INCREASING THE MECHANICAL CHARACTERISTICS OF AK5M2 ALLOY HARDENED BY THE METHOD OF VACUUM-ARC DEPOSITION OF METAL COATINGS V.V. SHLYAROV, A.A. SEREBRYAKOVA, D.V. ZAGULIAEV, YU.F. IVANOV, A.M. USTINOV In this paper, the mechanical characteristics of the AK5M2 alloy hardened by applying a titanium coating are studied. Coatings of various thicknesses (1, 3, 5 μm) were deposited by the vacuum-arc method on samples in the form of proportional blades. The samples were subjected to two types of mechanical tests: uniaxial tension at a constant rate and fatigue loading. The state of the elemental and phase composition, the defective substructure of the "film/substrate" system was studied by scanning and transmission diffraction electron microscopy, it was found that vacuum-arc deposition of a titanium film is accompanied by the formation of a multilayer system. X-ray microanalysis revealed that the transition layer is enriched in silicon atoms and contains titanium and aluminum atoms. The indexing of the microelectron diffraction pattern obtained from the deposited film revealed the presence, in addition to the α-Ti refl ections, of silicon, titanium aluminide of the composition Al3Ti, and titanium silicide of the composition Ti5Si3. The data of X-ray microanalysis revealed the presence of thermal diffusion processes occurring during the deposition of a titanium film on silumin. A contact nanoprofilometer was used to study the roughness of the deposited surface, on the basis of which it was found that the surface roughness Ra of the blades of the AK5M2 alloy after deposition of a titanium film with a thickness of 5 μm decreases by 2.6 times in relation to the roughness of silumin blades before deposition of the titanium film. The final result of the study of the AK5M2 alloy hardened by applying a titanium coating was a significant qualitative and quantitative transformation of the studied characteristics. Keywords: Al-Si, titanium, vacuum arc deposition, fatigue, tension, structure. DOI: 10.25791/infizik.4.2023.1321 Pp. 38-47.