Influence of the coefficient of asymmetry of the loading cycle on the features of destruction of titanium alloy VT6

Naprienko S.A., Medvedev P.N., Levchenko A.A.
UDC
669.295
DOI
10.18577/2307-6046-2025-0-11-112-123
Article PDF (Russian) (1.11 MB)
How to cite
Naprienko S.A., Medvedev P.N., Levchenko A.A. Influence of the coefficient of asymmetry of the loading cycle on the features of destruction of titanium alloy VT6 // Proceedings of VIAM. 2025. No. 11. DOI: 10.18577/2307-6046-2025-0-11-112-123. URL: https://test.viam.ru/en/journal/2025/11/10
Keywords
cycle asymmetry coefficient, titanium alloys, alloy VT6, fractography, plastic deformation
Abstract

The influence of various values of the asymmetry coefficient of the loading cycle R (–1 to 0,9) in determining the minimum and maximum values of the bending moment during loading based on N = 106 cycles at which fracture occurs has been studied. It was revealed that the change in R values from –1 to 0,7 do not lead to a change in the fracture structure in the zone of fatigue crack development. At R equal to 0,8 and 0,9, fatigue failure occurs with the formation of chip facets. In the α- and β-phases, the residual macro- and micro-deformations of the crystal lattice increase with increasing values of R and maximum stresses.

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