CREATION OF COMPOSITE BRONZES REINFORCED BY STEEL DENDRITES
https://doi.org/10.17073/0021-3438-2018-4-68-76
Abstract
The paper studies the group of composite bronzes, BrFNCA 9-4-1-1, BrFNA 12-7-1 and others where brittle Cu3Sn intermetallics are «replaced» by steel dendrites. The mass transfer of Fe, Ni, Co, Al between the matrix and dendrites in these bronzes is investigated. Dendrite dispersion depending on the methods used to produce these bronzes can be increased by a factor of 10, for example, in the vacuum casting process. The mechanical properties of BrFNCA samples (σв = 372 МPа, δ = 25 %, ψ = 42 %) are higher as compared with the BrO10 prototype: by 50 % in terms of σв hardness, and by 4–5 times in terms of δ and ψ plasticity. The coefficient of friction is lower than that of BrO10 by 20–30 %, and wear resistance is higher by an order of magnitude. The fact of a significant effect of the dendritic component dispersion on the BrFNA bronze wear rate is found. Thus, the wear rate for 1 μm and 10 μm dendrite cross sections is 0,002 and 0,025, respectively, and the coefficient of friction remains unchanged, i.e. it does not depend on dendrite dispersion. The whole set of mechanical, processing and service properties makes it possible to consider that the semicommercial tests of this new class of BrFNCA composite bronzes reinforced with H12C7A maraging dendrites for sliding friction units are justified and promising.
About the Authors
B. A. Potekhin
Ural State Forest Engineering University (USFEU).
Russian Federation
Russian Federation
Potekhin B.A. – Dr. Sci. (Tech.), Prof., Department «Metal technology».
620100, Russia, Ekaterinburg, Sibirskiy tr., 36.
A. S. Khristolyubov
Ural State Forest Engineering University (USFEU).
Russian Federation
Russian Federation
Khristolyubov A.S. – Lead engineer, Department «Metal technology».
620100, Russia, Ekaterinburg, Sibirskiy tr., 36.
A. Yu. Zhilyakov
Ural Federal University.
Russian Federation
Russian Federation
Zhilyakov A.Y. – Cand. Sci. (Tech.), Lead engineer, Department «Heat treatment and physics of metals».
620062, Russia, Ekaterinburg, Mira str., 28.
References
1. Arzamasov B.N. Konstruktsionnye materialy: Spravochnik [Structural Materials: Handbook]. Moscow: Mashinostroenie, 1990.
2. Potekhin B., Hernández A., Khristolyubov A., Ilushin V. Formación de la estructura y propiedades de los bronces Fe—Ni—Al In: Proc. VI Congr. Inter. Mater. «CIM 2011» (Colombia, Bogotá D.C., 27—30 Nov. 2011). Р. 67—75.
3. Potekhin B.A., Khristolyubov A.S., Zhilyakov A.Yu., Ilyushin V.V. Osobennosti formirovaniya struktury kompozitnykh bronz, armirovannykh stal’nymi dendritami [Features of the formation of the structure of composite bronzes reinforced with steel dendrites]. Voprosy materialovedeniya. 2013. No. 4. (76). C. 43—49.
4. Potekhin B.A., Ilyushin V.V., Khristolyubov A.S., Zhilyakov A.Yu. Formirovaniya struktury kompozitnykh bronz, armirovannykh stal’nymi dendritami [Forming the structure of composite bronzes reinforced with steel dendrites]. Fizika metallov i metallovedenie. 2014. Vol. 115. No. 4. P. 442—448.
5. Saltykov S.A. Stereometricheskaya metallografiya [Stereometric metallography] Moscow: Metallurgiya, 1970.
6. Potekhin B.A., Ilyushin V.V., Khristolyubov A.S. Osobye svoistva babbita B83, poluchennogo turbulentnym sposobom lit’ya [Special properties of babbit B83 obtained by turbulent casting]. Lit’e i metallurgiya. 2010. No. 3 (57). P. 78—81.
7. Lyakishev N.P. Diagrammy sostoyaniya dvoinykh metallicheskikh sistem: Spravochnik [Diagrams of the state of double metal systems: Handbook]. Moscow: Mashinostroenie, 1997.
8. Avraamov Yu.S., Shlyapin A.D. Splavy na osnove sistem s ogranichennoi rastvorimost’yu v zhidkom sostoyanii [Alloys based on systems with limited solubility in the liquid state] Moscow: Interkontakt nauka, 2002.
9. Köster W., Dannöehl W. Das system kupfer—nickel— eisen. Z. Metallkd. 1935. No. 9. S. 220—226.
10. Qin G.W., Zhao G., Jiang M., Li H.X., Hao S.M. The isothermal sections of the Cu—Ni—Fe ternary system at 600, 800, 1000, and 1050 °C. Z. Metallkd. 2000. No. 5. S. 379—382.
11. Gupta K.P. The Cu—Fe—Ni (copper—iron—nickel) system. Phase Diagram of Ternary Nickel Alloys. 1990. No. 1. P. 290—315.
12. Chuang Y.Y., Schmid R., Chang Y.A. Calculation of the equilibrium phase diagrams and the spinodally decomposed structures of the Fe—Cu—Ni system. Acta Mater. 1985. No. 8. P. 1369—1380.
13. Lopez V.M., Sano N., Sakurai T., Hirano K. A study of phase decomposition in Cu—Ni—Fe alloys. Acta Metall. Mater. 1993. No. 1. P. 265—271.
14. Ronka K.J., Kodentsov A.A., Van Loon P.J.J., Kivilahti J.K., Van Loo F.J.J. Thermodynamic and kinetic study of diffusion paths in the system Cu—Fe—Ni. Metall. Mater. Trans. A. 1996. Vol. 27. No. 8. P. 2229—2238.
15. Ugaste U., Kodentsov A.A., Van Loo F.J. Interdiffusion and Kirkendall-effect in the Fe—Ni—Cu system. Sol. St. Phenomena. 2000. No. 72. P. 117—122.
16. Divinski S.V., Hisker F., Herzig Chr., Filipek R., Danielewski M. Self- and interdiffusion in ternary Cu—Fe—Ni alloys. URL: http://ceramrtr.ceramika.agh.edu.pl/~icmmagh/artykuly/228%20Filipek_p50.pdf (accessed: 07.06.2017).
17. Wang C.P., Liu X.J., Ohnuma I., Kainuma R., Ishida K. Thermodynamic database of the phase diagrams in Cu—Fe base ternary systems. J. Phase Equilib. Diffus. 2004. Vol. 25. No. 4. P. 320—328.
18. Potak Ya.M. Vysokoprochnye stali |High-strength steel|. Мoscow: Metallurgiya, 1972.
19. Potak Ya.M., Sagalevich E.A. Strukturnaya diagramma deformiruemykh nerzhaveyushchikh stalei [Structural diagram of deformable stainless steels]. MITOM. 1971. No. 9. P. 12—16.
20. Baricco M., Bosco E., Acconciaioco G., Rizzi P., Coisson M. Rapid solidification of Cu—Fe—Ni alloys. Mater. Sci. Eng. A. 2004. P. 375—377, 1019—1023.
21. Potekhin B.A., Khristolyubov A.S., Hernandez Fereira A.A. New class of composite bronze, armed with steel dendrites for antifriction technique. In: Proc. XXIV Inter. Sci. Conf. «Trans & Motauto 16» (Varna, Bulgaria, June 2016). Р. 36—69.
22. Shumyakov V.I., Potekhin B.A., Korobov Yu.S., Khristolyubov A.S., Ilyushin V.V., Kochugov S.P., Balin A.N., Vishnevskii A.A. Poroshkovaya provoloka dlya polucheniya antifriktsionnykh pokrytii [Powder wire for the production of antifriction coatings]: Pat. 170923 (RF). 2017.
Review
For citations:
Potekhin B.A., Khristolyubov A.S., Zhilyakov A.Yu. CREATION OF COMPOSITE BRONZES REINFORCED BY STEEL DENDRITES. Izvestiya. Non-Ferrous Metallurgy. 2018;(4):68-76. (In Russ.) https://doi.org/10.17073/0021-3438-2018-4-68-76
Views:
699
Email this article 