Shevchuk M. Regularities of forming structure and performance properties of wear-resistant composite materials of transition metal carbides and self-fluxing alloys

Properties and processing characteristics of granules from solid refractory com-pounds (SRC) that depends of methods for their obtention were studied. It was demonstrated that the main condition for the creation of such composition material (CM) is usage as a metal binder iron based self-fluxing alloys (SFI). The wetting process in different atmospheres of SRC and their alloys by SFI were studied for the first time. It has been established that the SFI vis-a-vis other metals and alloys wets out SRC in air. Interaction processes of SFI with SRC and hard alloys of the types VK and TK was studied. It has been established that interaction processes give rise to forming of the transition zone on the SRC-SFI contact boundary, thereby decreasing properties gradient thereon that acts to rise of mechanical characteristics of CM and their performance characteristics in general. Processes of producing of composite materials by impregnation of the churlish component with SFI were studied. We developed physical and mathematical models for production of CM and thick coatings therefrom involving carbide wastes by impregnation with simultaneous parts casting and rotorforming. The properties of CM with SRC and SFI were studied. It is found the integral relation between wear and pellets size in the strengthening phase due to the impact on this process of parent phase of strengthening phase. CM hardening by dispersed solid components wear products of. It is shown that the most gas-abrasive wear resistance have compositions which include alloy SRC (relit). Keywords: wetting, impregnation, interaction, phase composition, chemical composition, structure, microhardness, wear resistance, iron based self-fluxing alloys, carbides of transition metals.