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JOURNALS // Vestnik Tomskogo Gosudarstvennogo Universiteta. Matematika i Mekhanika // Archive

Vestn. Tomsk. Gos. Univ. Mat. Mekh., 2025 Number 96, Pages 66–80 (Mi vtgu1179)

MECHANICS

Possibilities of using Ti–B–Fe system powders in producing hard alloys with improved mechanical properties

O. K. Lepakova, O. A. Shkoda

Tomsk Scientific Center of the Siberian Branch of the Russian Academy of Sciences, Tomsk, Russian Federation

Abstract: A method for obtaining a composite powder of titanium diboride and iron with high performance characteristics has been developed. The newly produced materials should be able to function at high speeds, temperatures, mechanical loads, and aggressive conditions. To meet these requirements, they should possess a complex set of physical, mechanical, chemical, and other special properties. In this work, the optimal modes of self-propagating high-temperature synthesis, subsequent grinding of the synthesis products, and further sintering have been discovered. The microstructures of the products at each technological stage of product preparation were studied. The compaction patterns of the compressed composite powder based on titanium diboride depending on the temperature and time parameters of sintering were examined. Mechanical tests of the obtained sintered materials for strength (a bend) and hardness (HRA) using the INSTRON 3368 and hardness tester TK-2 by the Rockwell method have determined high characteristics of strength (HRA 83-85, a $\sigma_{\text{end}}= 1200$ MPa) and wear resistance at the level of BK 15. The possibility of their application in the woodworking industry has been shown

Keywords: self-propagating high-temperature synthesis, sintering, titanium diboride, structure, mechanical properties, composite material, Ti-B-Fe system, hardness, strength characteristics.

UDC: 539.4, 620.178

Received: 24.07.2024

DOI: 10.17223/19988621/96/6



© Steklov Math. Inst. of RAS, 2026