Research of erosion resistance of superficial layers of steels under cavitation

Authors

  • Владимир Иванович Коваленко National Science of Centre «Kharkov institute of Physics and technology», str. Akademicheskaja, 1, Kharkov, Ukraine, 61108, Ukraine
  • Людмила Ивановна Мартыненко National Science of Centre «Kharkov institute of Physics and technology», str. Akademicheskaja, 1, Kharkov, Ukraine, 61108, Ukraine
  • Владимир Григорьевич Маринин National Science of Centre «Kharkov institute of Physics and technology», str. Akademicheskaja, 1, Kharkov, Ukraine, 61108, Ukraine

DOI:

https://doi.org/10.15587/1729-4061.2015.40196

Keywords:

steel, superficial layer, modification, erosion, analytical relationship, resistance, microhardness, coating

Abstract

Fracture resistance of low-alloy steels 15KH1M1F, 25KH1MF, 25KH1M1F, 20KH1M1FTR and steels 20KH13, 15KH11MF, 15KH12VNMF without and with thermomechanical treatment under intense cavitation on the sample surface was investigated. Cavitation was generated by exponential-profile ultrasound emitter. The emitter end surface varies with the frequency of 20 kHz and amplitude of 30±2 microns. Erosion measurements of samples were conducted by gravimetric method. Measurement accuracy was ±0,015 mg. According to the measurements, the dependences of the erosion on the cavitation exposure time were constructed. For quasi-linear plots of kinetic curves, the destruction rate of the samples was calculated and their cavitation resistance was determined. The interrelation of resistance ( ) with microhardness (Нm) for low-alloy steels in the form of ~С  when measuring Нmin GPa was revealed. For more alloyed steels, the exponent is reduced to 2. Nitriding, hardening of coatings increase the resistance of the samples. When applying a vacuum arc coating on the heat-treated surface of the sample, its cavitation resistance is reduced by the value that depends on the coating formation process parameters.

Author Biographies

Владимир Иванович Коваленко, National Science of Centre «Kharkov institute of Physics and technology», str. Akademicheskaja, 1, Kharkov, Ukraine, 61108

The scientific employee of a department

Institute of physics of a firm body, materials science and technologies

Людмила Ивановна Мартыненко, National Science of Centre «Kharkov institute of Physics and technology», str. Akademicheskaja, 1, Kharkov, Ukraine, 61108

The deputy chief of a department

Institute of physics of a firm body, materials science and technologies

Владимир Григорьевич Маринин, National Science of Centre «Kharkov institute of Physics and technology», str. Akademicheskaja, 1, Kharkov, Ukraine, 61108

The candidate of physical and mathematical sciences, the senior lecturer, the senior scientific employee

Institute of physics of a firm body, materials science and technologies

References

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Published

2015-04-16

How to Cite

Коваленко, В. И., Мартыненко, Л. И., & Маринин, В. Г. (2015). Research of erosion resistance of superficial layers of steels under cavitation. Eastern-European Journal of Enterprise Technologies, 2(5(74), 23–27. https://doi.org/10.15587/1729-4061.2015.40196

Issue

Vol. 2 No. 5(74) (2015): Applied physics. Materials Science

Section

Applied physics

License

Copyright (c) 2015 Владимир Иванович Коваленко, Людмила Ивановна Мартыненко, Владимир Григорьевич Маринин

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