Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Material Origins of Accelerated Operational Wear of RD-33 Engine Blades

Version 1 : Received: 24 November 2020 / Approved: 26 November 2020 / Online: 26 November 2020 (11:20:45 CET)

A peer-reviewed article of this Preprint also exists.

Kozakiewicz, A.; Jóźwiak, S.; Jóźwiak, P.; Kachel, S. Material Origins of the Accelerated Operational Wear of RD-33 Engine Blades. Materials 2021, 14, 336. Kozakiewicz, A.; Jóźwiak, S.; Jóźwiak, P.; Kachel, S. Material Origins of the Accelerated Operational Wear of RD-33 Engine Blades. Materials 2021, 14, 336.

Journal reference: Materials 2021, 14, 336
DOI: 10.3390/ma14020336

Abstract

The structural and strength analysis of the material used to construct such an important engine element as the turbine is of great significance, both at the design stage as well as during tests and expertises related to emergency situations. Bearing in mind the conditions above mentioned, the paper presents the results of research on the chemical composition, morphology and phased structure of the metallic construction material used to produce the blades of the high and low pressure turbine of the RD-33 jet engine, which is the propulsion unit of the MiG-29 aircraft. The data obtained as a result of the material tests of the blades allowed, on the basis of the analysis of chemical composition and phased structure, to determine the grade of the alloy used to construct the tested elements of the jet engine turbine. The structural stability of the material was found to be lower in comparison with engine operating conditions, which manifested itself as a clear decrease in the resistance properties of the blade material. The results obtained can be used as a basis for analyzing the life span of an object or a selection of material replacements, which enable to produce the analyzed engine element.

Subject Areas

turbine jet engine; material tests; ember-resistant alloys

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