THERMODYNAMICS OF OXYGEN SOLUTIONS IN SILICON-CONTAINING Fe – Co – Cr MELTS
https://doi.org/10.17073/0368-0797-2018-8-657-661
Abstract
Thermodynamic analysis of the effect of silicon on the solubility of oxygen in Fe – Co – Cr melts has been carried out at 1873 K. Silicon has a sufficiently high deoxidizing ability in Fe – Co – Cr melts. Silicon at low contents practically does not affect the concentration of oxygen in the melt, which is determined by the chromium content. With a higher content of silicon after changing the mechanism of interaction process of chromium and silicon with oxygen, when silicon already determines the solubility of oxygen in the melt, the oxygen concentration decreases.
About the Authors
A. A. AleksandrovRussian Federation
Cand. Sci.(Eng.), Senior Researcher
Moscow, Russia
V. Ya. Dashevskii
Russian Federation
Dr. Sci. (Eng.), Professor of the Chair “Energy-Efficient and Resource-Saving Industrial Technologies”, Head of the Laboratory
Moscow, Russia
L. I. Leont’ev
Russian Federation
Dr. Sci. (Eng.), Professor, Academician, Adviser of the Russian Academy of Sciences, Chief Researcher
Moscow, Russia
References
1. Korznikova G.F. Effect of the mode of hot deformation on the structure and properties of magnetically hard alloys of the Fe-Cr-Co system. Metal Science and Heat Treatment. 2006, vol. 48, no. 1-2, pp. 76–80.
2. Korneva A., Bieda M., Korznikowa G., Sztwiertnia K., Korznikov A. Microstructure and some properties of FeCr25Co15 alloy subjected to plastic deformation by complex load. Int. J. Mater. Res. (Z. Metallkd.). 2008, vol. 99, no. 9, pp. 991–998.
3. Vaitek D.M., Breidi M.P., Khorton D.A. (Jr.) Korrektsiya kompozitsii splavov dlya dostizheniya vybrannykh svoistv v nagrevatelyakh s ogranicheniem temperatury [Correction of alloy composition to reach selected properties in heaters with limited temperature]. Patent RF no. 2441138. Byulleten’ izobretenii. 2012, no. 3. (In Russ.).
4. Steelmaking Data Sourcebook. N.Y.-Tokyo: Gordon & Breach Science Publ., 1988, 325 p.
5. Sigworth G.K., Elliott J.F. The thermodynamics of dilute liquid cobalt alloys. Canadian Metallurgical quarterly. 1976, vol. 15, no 2, pp. 123–127.
6. Aleksandrov A.A., Dashevskii V.Ya., Linchevskii B.V. Thermodynamics of the oxygen solutions in chromium-containing melts of the Fe-Co system. Russian Metallurgy (Metally). 2014, no. 9, pp. 681–687.
7. Lyakishev N.P., Gasik M.I. Metallurgiya khroma [Metallurgy of chromium]. Moscow: ELIZ, 1999, 582 p. (In Russ.).
8. Kulikov I.S. Raskislenie metallov [Metals deoxidation]. Moscow: Metallurgiya, 1975, 504 p. (In Russ.).
9. Aleksandrov A.A., Dashevskii V.Ya. Oxygen solubility in siliconcontaining Fe-Co melts. Russian Metallurgy (Metally). 2013, no. 11, pp. 825–829.
10. Belyanchikov L.N. Estimation of interaction parameters, activity coefficients and heats of dissolution of elements in cobalt-based al-loys by the method of conversion from their values in iron alloys. Elektrometallurgiya. 2009, no. 4, pp. 16–22. (In Russ.).
11. Dashevskii V.Ya., Aleksandrov A.A., Leont’ev L.I. Thermodynamics of oxygen solutions in the Fe – Ni, Fe – Co and Ni – Co melts. Izvestiya VUZov. Chernaya metallurgiya = Izvestiya. Ferrous Metallurgy. 2015, no. 1, pp. 54–60. (In Russ.).
12. Lyakishev N.P., Gasik M.I. Fizikokhimiya i tekhnologiya elektroferrosplavov [Physical chemistry and technology of electroferroalloys]. Moscow: ELIZ, 2005, 448 p. (In Russ.).
Review
For citations:
Aleksandrov A.A., Dashevskii V.Ya., Leont’ev L.I. THERMODYNAMICS OF OXYGEN SOLUTIONS IN SILICON-CONTAINING Fe – Co – Cr MELTS. Izvestiya. Ferrous Metallurgy. 2018;61(8):657-661. (In Russ.) https://doi.org/10.17073/0368-0797-2018-8-657-661