Abstract
The effect of the chemical composition and heat treatment on the microstructure and abrasive wear resistance of V-Mn, V-Ni-Cr, and V-Mo spheroidal vanadium carbide cast irons (18–23 vol %) has been studied. The wear resistance has been determined under conditions of wear by abrasives with various hardnesses, i.e., corundum and quartz and compared to that of high-chromium cast iron with 13% Cr. It has been found that the advisability of using high-vanadium cast irons is governed by the hardness of the abrasive. When a hard abrasive, i.e., corundum was used, V-Mo cast iron with the maximum concentration of spheroidal VC carbides, which were uniformly distributed in the martensitic matrix, had the highest wear resistance. When a soft abrasive, i.e., quartz, was applied, high-chromium cast iron with a hardness of 68 HRC, which contained the largest amount of M7C3 carbides, was more wear-resistant. In the course of isothermal exposure at 300–1000°C, V-Ni-Cr and V-Mo cast irons with an austenitic structure had high resistance to phase and structural transformations. However, the properties and microstructure of V-Mo cast irons with a martensitic matrix depended strongly on the temperature of exposure during heat treatment.
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Original Russian Text © V.G. Efremenko, K. Shimizu, A.P. Cheiliakh, T.V. Kozarevs’ka, Yu.G. Chabak, H. Hara, K. Kusumoto, 2013, published in Trenie i Iznos, 2013, Vol. 34, No. 6, pp. 610–620.
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Efremenko, V.G., Shimizu, K., Cheiliakh, A.P. et al. Abrasive wear resistance of spheroidal vanadium carbide cast irons. J. Frict. Wear 34, 466–474 (2013). https://doi.org/10.3103/S1068366613060068
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DOI: https://doi.org/10.3103/S1068366613060068