TRIBOTECHNICAL CHARACTERISTICS OF DISPERSION NITRIVANADIUM-STRENGTHENED STEELS

Authors

  • Віктор Бородій
  • Оксана Олександрівна Мікосянчик

DOI:

https://doi.org/10.18372/0370-2197.3(92).15939

Abstract

Analysis of anti-friction, anti-oil and energy characteristics of wheeled and rail steels was carried out. The positive effect of microleague technology of vanadium and nitrogen on the tribotechnical characteristics of the wheeled steel has been established. Dispersion nitridanadium strengthened steel is characterized by a decrease in the specific operation of friction by 1.8 times, compared with the period of bedding, indicating an effective structural adaptability of this steel in non-stationary friction conditions during bedding of 3%. The processes of structural adaptability of nitridanadium strengthened wheel steel from the positions of mechano-and-physical aswell as chemical processes occurring with the absorption of energy by surface and near-surface metal layers are considered. For the studied wheeled steel, the capture of the contact surfaces is not established, the surface layers of metal after working 130 cycles are characterized, preferably strengthening (δ H100 = 680 MPa), only, on average, by 15% of the surface area, plots with severe layers are recorded. It has been established that as a result of effective structural adaptability to dynamic load conditions, dispersion nitridanadieviously strengthened wheeled steel, counterattack, which was selected by rail steel, also manifests increased wear resistance - its linear wear is 3.9 times less, compared to working conditions in triberal standard wheeled steel.

Author Biographies

Віктор Бородій

 – заступник декана аерокосмічного факультету, Національний авіаційний університет, пр. Любомира Гузара, 1, м. Київ, Україна, 03058, тел.: +38 044 406 70 10

Оксана Олександрівна Мікосянчик

 д. техн. наук, професор, завідувач кафедри прикладної механіки та інженерії матеріалів, Національний авіаційний університет, пр. Любомира Гузара, 1, м. Київ, Україна, 03058, тел.: +38 044 406 77 70

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Published

2021-09-27

How to Cite

Бородій, В., & Мікосянчик, О. О. (2021). TRIBOTECHNICAL CHARACTERISTICS OF DISPERSION NITRIVANADIUM-STRENGTHENED STEELS. Problems of Friction and Wear, (3(92), 71–79. https://doi.org/10.18372/0370-2197.3(92).15939

Issue

No. 3(92) (2021)

Section

Проблеми тертя та зношування

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