The oxide phase formation modelling at the deoxidization process in yttrium steels
DOI:
https://doi.org/10.31498/2225-6733.32.2016.81870Keywords:
yttrium, oxide, sulfide, inclusion, modellingAbstract
In recent years approaches to high-quality steel production have significantly changed. The influence of the oxide and sulfide non-metallic inclusions should be noted in particular. Modifying is followed with the change in the inclusions chemical composition, they are generally being MnS inclusions and fragile oxidic inclusions. Modification results in the formation of spherical oxides and yttrium sulfides that don’t deform at rolling. Nowadays modifying with rare-earth elements has no broad application because of the use of cheaper lime which possesses similar efficiency. That is why REM are applied generally as microparticles, and their deoxidating and desulphurizing abilities are limited because of their high cost in comparison with the expenditures on modern extra oven processing of steel. Nonmetallic inclusions hardly influence on «volume» processes of plastic deformation and hardening. The use of rare-earth metals and their combinations as nonmetallic inclusions modifiers appear to have considerable promise. Therefore the modelling and further calculation of oxygen and sulfur interaction with yttrium in metal were carried outReferences
Yttrium addition to heat-resistant cast stainless steel / C. Nunes, J. Dille, J.-L. Delplancke, L.H. de Almeida // Scripta Materialia. − 2006. − Vol. 54, Issue 9. − Pp. 1553-1556.
Holtzer M. Procesy metalurgiczne i odlewnicze stopów żelaza. Podstawy fizykochemiczne / M. Holtzer. – Warszawa : Wydawnictwo Naukowe PWN, 2013. − 570 s.
Iwanciw J. Simulation of oxygen and nitrogen removal from steel by means of titanium and aluminum / J. Iwanciw, D. Podorska, J. Wypantowicz //Archives of Metallurgy and Materials. − 2011. − Vol. 56, Issue 3. − Pp. 635-644.
Liu Z. Mathematical Model of Sulfide Precipitation on Oxides during Solidification of Fe-Si Alloy / Z. Liu, K. Gu, K. Cai // ISIJ International. – 2002. – Vol. 42, № 9. – Pр. 950-957.
Hallstedt B. Thermodynamic Assessment of the System MgO-Al2O3 / B. Hallstedt // Journal of the American Ceramic Society. − 1992. − Vol. 75, Issue 6. − Pp. 1497-1507.
Phase Equilibria of the MnO-SiO2-CrOx System at 1873 K under Controlled Oxygen Partial Pressure / M. Tanahashi, N. Futura, C. Yamauchi, T. Fujisawa // ISIJ International. − 2001. − № 41(11). − Pp. 1309-1315.
Kobayashi S. Thermodynamic Fundamentals for Alumina-content Control of Oxide Inclusions in Mn-Si Deoxidation of Molten Steel / S. Kobayashi // ISIJ International. − 1999. − Vol. 39, № 7. − Pp. 664-670.
Михайлов Г.Г. Термодинамическое моделирование фазовых равновесий с оксидными системами, содержащими РЗМ. Сообщение 2. Диаграммы состояния оксидных систем с Y2O3 / Г.Г. Михайлов, Л.A. Макровец // Вестник Южно-Уральского государственного университета. Серия : Металлургия. − 2014. − Т. 14, № 4. – C. 5-10.
Wypantowicz J. Control of chemical composition of oxide-sulfide inclusions during deoxidization of steel with manganese, silicon and titanium / J. Wypantowicz, D. Podorska // Metallurgy-Metallurgical Engineering News. − 2006. − № 3. − Pp. 91-96.
Iwanciw J. Modeling of oxide precipitates chemical composition during steel deoxidization / J. Iwanciw, D. Podorska, J. Wypantowicz // Archives of Metallurgy and Materials. − 2011. − Vol. 56, № 4. − Pp. 999-1005.
Calculation of oxide inclusions composition in the steel deoxidized with Mn, Si, and Ti / D. Podorska, P. Drożdż, J. Falkus, J. Wypantowicz // Archives of Metallurgy and Materials. − 2006. − Vol. 51, Issue 4. − Pp. 581-586.
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