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- Article name
- Multi-component refractory metals base alloys - new generation of high-temperature composite materials
- Authors
- LOGACHEVA A. I., , ailogacheva@yandex.ru, Open Joint-Stock Company "Kompozit", Korolev, Moscow region, Russia
RAZUMOVSKII I. M., , razigor43@gmail.com, JSC "Kompozit", Korolev, Moscow Region, Russia
BERESNEV A. G., , BERESNEV1961@yandex.ru, JSC "Kompozit", Korolev, Moscow Region, Russia
RAZUMOVSKII M. I., , razmikhail@yandex.ru, JSC "Kompozit", Korolev, Moscow Region, Russia
BOKSTEIN B. S., , bokstein@mail.ru, National University of Science and Technology "MISIS", Moscow, Russia
RODIN A. O., , arodine@mail.ru, National University of Science and Technology "MISIS", Moscow, Russia
- Keywords
- high-temperature composites / multi-component based refractory alloys / stable solid solutions / intermetallics / silicides
- Year
- 2019 Issue 1 Pages 45 - 50
- Code EDN
- Code DOI
- Abstract
- The principles of alloying of new generation of high-temperature composite materials based on many refractory metals from IV (Ti, Zr, Hf), V (V, Nb, Ta), and VI (Cr, Mo, W) groups of periodic table of elements are proposed. Using an analysis of the results of the study of multi-principal element alloys we determine the chemical compositions of refractory single-phase alloys with a stable BCC lattice, which can represent a matrix of new materials. Of these alloys as promising we select solid solutions of alloy systems W-Ta-Nb-Mo-V (1) and Hf-Nb-Ta-Ti-Zr (2). Alloys of the system 1 have high cohesive energy values that should contribute to good creep resistance at elevated temperatures. The disadvantage of alloys 1 is the tendency to brittle fracture at room temperatures that will require the use of technological methods of plasticization. Alloys 2 are characterized by moderate values of cohesive strength, however, they have good ductility. To increase the heat resistance of solid solutions 1 and 2, variants of their hardening by the intermetallic phase of Laves and/or silicides of refractory metals are proposed.
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