STUDY OF THE INFLUENCE OF MODIFICATION WITH CARBON-CONTAINING POWDER COMPOSITES ON THE STRUCTURE AND WEAR RESISTANCE OF IRON-BASED ALLOYS
DOI:
https://doi.org/10.34185/Keywords:
silicon carbide, titanium carbide, tungsten carbide, chromium carbide, magnesium, aluminum, titanium, iron, pearlite structure.Abstract
Highly dispersed composite powder materials that contain carbide and other carbonaceous compounds can act as modifiers in the creation of high-strength and wear-resistant iron-based alloys. However, a detailed study of their influence on the structure and mechanical properties of iron-based alloys was not conducted by domestic researchers. The phase composition of powder compositions (ligatures) formed by the interaction of nanosized carbides with powdered metals was studied. X-ray analysis of the synthesized highly dispersed carbon-containing compounds revealed their complex structural state caused by the influence of environmental atoms and the formation of multicomponent phases of solid solutions. The peculiarities of the microstructure of the iron-based alloy with the addition of developed ligatures were studied and their hardness was determined. The fusion of powder mixtures of powdered iron with synthesized carbon-containing products leads to the formation of a pearlite structure of metal composites, as well as areas of microeutectics with a ledeburite structure, characterized by a dispersed grain size and highly dispersed inclusions of carbides, which provide high resistance to abrasive wear of the alloy. Hardening of the created iron-based metal composites leads to a significant increase in wear resistance, which exceeds the indicators of well-known wear-resistant brands of cast iron and steel.
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