ON THE RESISTANCE TO ABRASIVE WEAR OF CHROMIUM-MANGANESE ALLOYS IN DIFFERENT ENVIRONMENTS
Keywords:CHROMIUM-MANGANESE ALLOY, HARDNESS, ALLOYING, ABRASIVE ENVIRONMENT
Research in the direction of increasing the service life of iron-based alloys, which operate in difficult conditions, has been carried out. The possibility of using chromium-manganese alloys (cast iron) as a material has been proven. The material is characterized by a lower manufacturing cost compared to traditional ones (high-chromium cast iron and nikorin-type alloy) due to a decrease in the content of chromium, nickel and vanadium. The results of studies of the influence of the chemical and phase composition, structure and hardness of the metal matrix on the abrasive wear of chromium-manganese alloys after the crystallization of castings were presented. Using X-ray diffraction analysis, carbides Me7C3-(Cr, Mn, Fe)7C3, cementite, ferrite and austenite in the structure of chromium-manganese alloys were identified. With an increase in the content of carbon and manganese, the amount of austenite in the matrix increases. An alloy that contains 3.1% C, 13.1% Cr and 15.7% Mn is the most resistant to wear in various abrasive media. This is due to the hardness of the metal matrix, the amount of austenite-carbide eutectic based on Me7C3 carbide, and deformation-phase transformations that occurred during the tests.
Cheiliakh A. P., Klok D. V., Prekrasniy S. V. Development and research of new economically alloyed wear-resistant cast irons with a metastable structure for high-wear parts. Metal and casting of Ukraine. 2006. No. 9–10. pp. 13–17.
Koval Yu. M., Kutsova V. Z., Kovzel M. A., Shvets P. Yu. Features of Structure Formation, Kinetics of Phase Transformations, Mechanical and Tribological Properties of the Fe-Based Cr–Mn–Ni Alloys. Progress in Physics of Metals. 2020. Vol. 21. №. 2. pp. 180–248.
Nesterenko А.М., Kutsova V.Z., Kovzel М.А. Investigation of crystal structure of Me7C3-Type Carbides. Metallophysics and advanced technologies. 2003. №1. pp. 99 - 106.
Kutsova V. Z., Kovzel M. A., Grebeneva A.V., Ratnikova, I.V., Velichko, O.A. The influence of alloying elements on the formation of the structure, phase composition and properties of chromium-manganese cast iron in the cast state. Metallurgical and mining industry. 2015. № 3 (294). pp. 45 - 48.
Kutsova V. Z., Kovzel M. A., Grebeneva A.V., Ratnikova, I.V., Shvets P. Yu. Formation of the structure, phase composition and properties of chromium-manganese cast irons in the cast and normalized state. Construction, materials science, mechanical engineering. 2016. № 89. pp.101–111 .
Kutsova V. Z., Kovzel M. A., Grebeneva A.V., Shvets P. Yu., Zyska A., Koczurkiewicz B. Structure and mechanical properties of chromo-manganese cast iron in the cast stay. New technologies and achievements in metallurgy, material engineering and production engineering. A collective monograph. 2016. №. 56. pp. 147 - 153.