Abstract
The paper presents the results of a study of the tribological characteristics of the contact of the tool steel of composition Fe-18W-4Cr-1.2V with a magnesium alloy of the Mg-Ca system, strengthened by SPD using the method of ECAP. It has been established that the SPD processing of a magnesium alloy, due to an increase in strength as a result of the grain structure refinement, makes it possible to significantly reduce the integral value of the friction coefficient in the moving friction contact. In addition, the SPD processing of the material under study leads to a decrease in the molecular component of the friction coefficient.
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