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Journal of Applied Mechanics and Technical Physics

2018 year, number 3

Wear Resistance of Knives Made of DI37-VI (11Kh4V2MF3S2-VI) Steel during Cutting with Addition of an Abrasive Material

O. I. Stoyanovskii1, A. N. Maznichevskii2, A. A. Pikarevskii1, E. S. Vasyukova2
1Lavrentyev Institute of Hydrodynamics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia, 630090
2Limited Liability Company "Laboratory of Special Metallurgy", Chelyabinsk, Russia, 454047
Keywords: износостойкость, дисперсионно-твердеющие стали, аустенизация, карбиды, микроструктура, ускоренный абразивный износ, wear resistance, precipitation hardening steels, austenization, carbides, microstructure, accelerated abrasive wear

Abstract

A method of thermal treatment of DI37-VI steel exhibiting precipitation hardening is developed with due allowance for the steel microstructure and determining the chemical composition of carbides and the matrix after each operation. In the case of low-temperature tempering, the mechanical properties of steel are found to be little different from its properties obtained by means of multiple high-temperature tempering (aging); in the latter case, however, the wear resistance of steel in the case of cutting of steel bars is 1.5 times higher. It is demonstrated that the wear resistance of steel is significantly affected by the chemical composition of carbides and the matrix.