INVESTIGATION OF THE INFLUINCE OF DISTRIBUTION OF ALLOY ADDITIVES ON THE STRUCTURE AND PROPERTIES OF COARSE-GRAIN HARD ALLOY WC–20%Co

Abstract

The objective of the research is to determine the distribution of alloying carbides TaC and Cr3C2 in coarse-grained hard alloy WC – 20% Co and to evaluate the effect of alloying on microstructural parameters (average carbide grain size, grain size variation coefficient, carbide phase adjacency coefficient, average layers, the specific area of ​​intergranular and interfacial surfaces) and the physical and mechanical properties (density, hardness, yield strength in the test for compression, tensile, bending and crack resistance) of coarse-grained hard alloy WС – 20% Co.            The production of new alloyed hard alloys WC – 20% Co, used for friction pairs and materials processing, will improve the performance of these products.