Actual Problems in Machine Building 2021 Vol.8 N3-4

Actual Problems in Machine Building. Vol. 8. N 3-4. 2021 Materials Science in Machine Building ____________________________________________________________________ 126 THE ASSESSMENT OF WEAR RESISTANCE OF Fe - C - Cr - Ni - Mn - Mo - Ti – Nb ALLOYING SYSTEM UNDER ON THE GAS ABRASIVE WEAR Priyatkin D.V., Ph.D. student, e-mail: nanomaterial-vstu@yandex.ru Artem'ev A.A., Ph.D. (Engineering), Associate Professor, e-mail: nanomaterial-vstu@yandex.ru Lysak V.I., Academician of the Russian Academy of Sciences, D.Sc. (Engineering), Professor, e-mail: nanomaterial-vstu@yandex.ru Kartashova A.A., Graduate students, e-mail: nanomaterial-vstu@yandex.ru Volgograd State Technical University, 28 Lenin Avenue, Volgograd, 400005, Russian Federation Abstract The paper deals with relevance of the development of new wear-resistant alloys for increasing the service life of equipment which operates under conditions of gas abrasive wear. The influence of the carbon content in an experimental alloy of the alloying system Fe-C-Cr-Ni-Mn-Mo-Ti-Nb on its structural-phase analysis and operational properties is investigated. The experimental results are analyzed by scanning electron microscopy, X-ray diffraction analyzer, hardness tester also the wear abrasion resistance properties are obtained by means of micro indenter scratching the surface under investigation. Moreover, in the paper an assessment of the technical and economic efficiency of the new alloy is given relative to the industrial analogue. The recommendations of the further wear resistance increasing of this alloying system are shown. Keywords Аrc surfacing, weld metal, wear resistance, gas abrasive wear, sclerometry, precipitate particles Funding Acknowledgments: The reported study was funded by RFBR, project number № 20-33-90168, 19-48-340010