Evaluation of the endurance limit of cooled blades of gas turbine engines made of heat-resistant nickel alloy

Keywords

heat-resistant corrosion-resistant nickel alloy, fatigue strength, blade, gas turbine engine.

Cite as

Kvasnytska Yu. H., Ivaskevych L. M., Balitskii A. I., Myalnitsa H. P., and Kvasnytska K. H. Evaluation of the endurance limit of cooled blades of gas turbine engines made of heat-resistant nickel alloy. Physicochemical Mechanics of Materials. 2023. 59(3), 86-92.

https://doi.org/10.15407/pcmm2023.03.086

Abstract

The characteristics of fatigue failure of the working blades of the first stage of the high-pressure turbine of the power gas turbine engine are determined. Experimental studies are carried out on blades obtained according to the improved technology from the CM88Y alloy, which is used in the serial production of gas turbine units. The blades withstood the test base of 1×10⁷ cycles at a stress of 200–240 MPa. The established limit of endurance corres­ponds to a given life of blades of this type.

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