Low-cycle fatigue at elevated temperatures of heat-resistant nickel-based alloy manufactured by selective laser melting

Khodinev I.A., Gorbovets M.A., Monin S.A., Ryzhkov P.V.
UDC
620.1
DOI
10.18577/2307-6046-2022-0-1-97-110
Article PDF (Russian) (1.21 MB)
How to cite
Khodinev I.A., Gorbovets M.A., Monin S.A., Ryzhkov P.V. Low-cycle fatigue at elevated temperatures of heat-resistant nickel-based alloy manufactured by selective laser melting // Proceedings of VIAM. 2022. No. 1. DOI: 10.18577/2307-6046-2022-0-1-97-110. URL: https://test.viam.ru/en/journal/2022/1/10
Keywords
low-cycle fatigue (LCF), high-temperature alloy, wrought alloy, nickel alloy, Basquin–Manson–Coffin equation, prediction of fatigue resistance characteristics, asymmetry coefficient
Abstract

Low-cycle fatigue has been investigated under a «hard» loading cycle and under a «soft» loading cycle of a heat-resistant deformable VZh175 alloy at room and two operating temperatures at three asymmetry coefficients. The tests were carried out at a sinusoidal loading cycle with a frequency of 1 Hz. Comparison of stresses at «soft» and «hard» loading cycles is carried out. A comparison of the fatigue curve and a priori curves obtained using the characteristics of short-term strength is carried out.

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