Development of Set of Requirements for Methods of Evaluating Performance of Welded Joints ‘Base–Overlay Metal’ from Nickel-Based Superalloys of ZhS6 and ZhS32 Type Simulating Repairing of Aircraft Gas Turbine Engines Blade Edges under Industrial Conditions

Yushchenko, K. A.; Yarovytsyn, O. V.; Chervyakov, N. O.; Zviagintseva, H. V.; Volosatov, I.R.; Oliynyk, Yu. V.

doi:10.15407/mfint.44.12.1679

Cited by 3 publications

(1 citation statement)

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“…Research results [56] showed that to extend the life cycle of gas turbine engines, it is advisable to use surfacing to restore worn parts from heatresistant nickel alloys. Rationally selecting heatresistant alloys for the manufacture of parts and operating modes, it is possible to increase the resource of gas turbine engines [57] and their environmental friendliness [58].…”

Section: Resultsmentioning

confidence: 99%

Tribology Characteristics of Heatproof Alloys at a Dynamic Pin Ladening in the Variable Temperature Field

Bembenek,

Tsyganov,

Sakhniuk

et al. 2023

Adv. Sci. Technol. Res. J.

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An analysis of the operating conditions of gas turbine engines, their components, and the destruction causes was carried out. The designer problems of tribo-joints operating under difficult conditions of force and temperature loads are singled out. The study aimed at obtaining the comparable quantitative dependences of blade material wear, taking into account the role of both cyclical changes in the temperature of the gas flow under the conditions close to real ones, and their frictional characteristics. Deformable heat-resistant nickel alloys and foundry heatresistant nickel alloys from which T-shaped samples were made, were chosen for the research. The tests were carried out on the developed gas dynamic stand, which simulates the working conditions of the bandage joints of the bladed turbomachines of gas turbine installations. The intensity of wear was determined as the ratio of the worn material volume to the number of load cycles under different temperature conditions. The wear resistance of three-way connections operating under the conditions of non-stationary thermal loads and fluctuations in the contact was considered. It was shown that thermal cycling leads to a decrease in the wear resistance of heat-resistant nickel alloys by 2-3 times and depends on the average temperature of the cycle. It wasfound that resistance to the wear, and also the character of change of coefficient of friction is mainly determined by the terms of education and destruction of the protective superficial layer. Basic factors managing tribology processes in the zone of contact were determined.

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Section: Resultsmentioning

confidence: 99%