Issues »  Volume 38, Issue 11

Properties of Powder Alloys Based on a Cobalt with Carbide Strengthening

T. S. Cherepova, G. P. Dmitrieva

G.V. Kurdyumov Institute for Metal Physics, NAS of Ukraine, 36 Academician Vernadsky Blvd., UA-03680 Kyiv-142, Ukraine

Received: 26.06.2016. Download: PDF

Cobalt alloys obtained by powder metallurgy and reinforced by carbides of niobium and titanium (that is important for their operation properties) are investigated. The dependence of the hardness of powder alloys on content of carbide at temperatures from room temperature to 1150°C is determined. As established, the characteristics of heat resistance of powder cobalt alloys with titanium carbide at temperature of 1100°C predominate over alloys with niobium carbide. Alloys of titanium carbide with volume content of 30, 50 and 70% are studied for wear resistance under fretting corrosion at temperatures of 20, 300, 650, 800, and 1050°C. The optimum composition of the alloy of aviation appointment with a melting point higher than 1300°C is determined for further field tests.

Key words: powder cobalt alloys, titanium carbide, niobium carbide, hardness, melting temperature, heat resistance, wear resistance.

URL: http://mfint.imp.kiev.ua/en/abstract/v38/i11/1497.html

DOI: https://doi.org/10.15407/mfint.38.11.1497

PACS: 62.20.Qp, 68.60.-p, 81.05.Bx, 81.05.Ni, 81.20.Ev, 81.40.Pq, 81.65.Mq

Citation: T. S. Cherepova and G. P. Dmitrieva, Properties of Powder Alloys Based on a Cobalt with Carbide Strengthening, Metallofiz. Noveishie Tekhnol., 38, No. 11: 1497—1512 (2016) (in Ukrainian)

REFERENCES
  1. G. N. Tret'yachenko, S. V. Kravchuk, R. I. Kuriat, and A. P. Voloshchenko, Nesushchaya Sposobnost' Lopatok Gazovykh Turbin pri Nestatsionarnom Teplovom i Silovom Vozdeystvii [The Bearing Capacity of Gas Turbine Blades in Nonstationary Thermal and Force Action] (Kiev: Naukova Dumka: 1975) (in Russian).
  2. G. I. Peychev, V. E. Zamkovoy, and N. V. Akhrameev, Tekhnologicheskie Sistemy, No. 2: 5 (2000) (in Russian).
  3. G. P. Dmitrieva, T. S. Cherepova, T. O. Kosorukova, and V. I. Nichiporenko, Metallofiz. Noveishie Tekhnol., 37, No. 7: 973 (2015) (in Russian). Crossref
  4. T. S. Cherepova, G. P. Dmytrieva, A. V. Nosenko, and O. M. Semyrha, Nauka ta Innovatsiyi, 10, No. 4: 22 (2014) (in Ukrainian).
  5. V. A. Leont'ev, S. D. Zalichikhis, E. V. Kondratyuk, and V. E. Zamkovoy, Vestnik Dvigatelestroeniya, No. 4: 99 (2006) (in Russian).
  6. G. I. Peychev, V. E. Zamkovoy, and N. V. Andreychenko, Aviatsionno-Kosmicheskaya Tekhnika i Tekhnologiya, No. 8: 11 (2007) (in Russian).
  7. G. I. Peychev, V. E. Zamkovoy, and N. V. Andreychenko, Aviatsionno-Kosmicheskaya Tekhnika i Tekhnologiya, No. 9: 102 (2010) (in Russian).
  8. T. S. Cherepova and G. P. Dmitrieva, Poroshkovaya Metallurgiya, Nos. 1–2: 58 (2016) (in Russian).
  9. M. M. Aleksyuk, V. A. Borisenko, and V. P. Krashchenko, Mekhanicheskie Ispytaniya pri Vysokikh Temperaturakh [Mechanical Tests at High Temperatures] (Kiev: Naukova Dumka: 1980) (in Russian).
  10. Raschety i Ispytaniya na Prochnost'. Metod Opredeleniya Vysokotemperaturnoy Tverdosti Vdavlivaniem Piramidal'nogo i Bitsilindricheskogo Indentora [Calculations and Tests of Strength. Method for Determination of the High-Temperature Hardness by Indentation of Pyramidal and Bicylindrical Indenters]. DSTU 2434-94 (in Russian).
  11. O. I. Dukhota and O. V. Tisov, Problemy Tertya ta Znoshuvannya, No. 53: 195 (2010) (in Ukrainian).
  12. R. F. Voytovich, Okislenie Karbidov i Nitridov [Oxidation of Carbides and Nitrides] (Kiev: Naukova Dumka: 1981) (in Russian).
  13. Entsiklopediya Neorganicheskikh Materialov (Kiev: Vysshaya Shkola: 1977) (in Russian).
  14. T. S. Cherepova, G. P. Dmytrieva, and N. V. Andriychenko, Splav na Osnovi Kobal'tu [An Alloy Based on Cobalt]: Ukrainian Patent No. 92883 (Publ. December 10, 2010) (in Ukrainian).

© 2013–2017 "G.V. Kurdyumov Institute for Metal Physics"