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Название: Development of Composite Bronzes Reinforced by Steel Dendrites
Авторы: Potekhin, B. A.
Khristolyubov, A. S.
Zhilyakov, A. Y.
Дата публикации: 2018
Издатель: Pleiades Publishing
Библиографическое описание: Potekhin, B. A. Development of Composite Bronzes Reinforced by Steel Dendrites / B. A. Potekhin, A. S. Khristolyubov, A. Y. Zhilyakov // Russian Journal of Non-Ferrous Metals. – 2018. – Vol. 59. – Iss. 5. – P. 527-532.
Аннотация: Abstract: A group of composite bronzes BrZhNKA 9-4-1-1, BrZhNA 12-7-1, etc., has been studied. Brittle intermetallic compounds of the Cu3Sn type are replaced by steel dendrites in them. The mass transfer of Fe, Ni, Co, and Al between the matrix and dendrites in these bronzes is studied. The dispersity of dendrites depending on the production method of the mentioned alloys can be increased tenfold, for example, with the vacuum casting method. The mechanical properties of the samples of the BrZhNKA type (σu = 372 MPa, δ = 25%, and ψ = 42%) when compared with the BrO10 prototype are higher: hardness σu by 50%, plasticity δ and ψ by a factor of 4–5, and wear resistance by an order of magnitude; the coefficient of friction is 20–30% lower. The fact of the substantial influence of dispersity of the dendritic component on the wearing intensity of the bronze of the BrZhNA type is established. For example, the wearing intensity with the transversal section of dendrites of 1 and 10 μm is 0.002 and 0.025, respectively, which is an order of magnitude lower, while the coefficient of friction remains herewith invariable; i.e., it is independent of the dispersity of dendrites. A whole complex of mechanical, process, and service properties makes it possible to consider the half-industrial approval of this new class of composite bronzes of the BrZhNKA type reinforced by dendrites of N12K7Yu maraging steel for sliding friction units substantiated and promising. © 2018, Allerton Press, Inc.
Ключевые слова: BRONZE
COEFFICIENT OF FRICTION
DENDRITE
DISPERSION HARDENING
INTERMETALLIC COMPOUND
MECHANICAL PROPERTIES
SOLID SOLUTION
BINARY ALLOYS
DENDRITES (METALLOGRAPHY)
DISPERSION HARDENING
FRICTION
INTERMETALLICS
MARAGING STEEL
MASS TRANSFER
MECHANICAL PROPERTIES
REINFORCEMENT
SOLDERING ALLOYS
SOLID SOLUTIONS
WEAR OF MATERIALS
WEAR RESISTANCE
COEFFICIENT OF FRICTIONS
DISPERSITY
PRODUCTION METHODS
SERVICE PROPERTIES
SLIDING FRICTION
VACUUM CASTING
BRONZE
BRONZE
COMPOSITE
FRICTION
HARDENING
MECHANICAL PROPERTY
STEEL
URI: https://elar.usfeu.ru/handle/123456789/9028
DOI: 10.3103/S1067821218050140
SCOPUS: 2-s2.0-85055440027
WoS: WOS:000448533700009
РИНЦ: 38620508
Располагается в коллекциях:Научные публикации, проиндексированные в SCOPUS и WoS CC

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