Fine structure and phase composition of Fe-14Mn-1.2C steel:influence of a modified mixture based on refractory metals

Anna Zykova; Natalya Popova; Mark Kalashnikov; Irina Kurzina

doi:10.1007/s12613-017-1433-2

Volume 24 Issue 5

May 2017

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2017 > 24(5): 523-529

Anna Zykova, Natalya Popova, Mark Kalashnikov, and Irina Kurzina, Fine structure and phase composition of Fe-14Mn-1.2C steel:influence of a modified mixture based on refractory metals, Int. J. Miner. Metall. Mater., 24(2017), No. 5, pp. 523-529. https://doi.org/10.1007/s12613-017-1433-2

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Anna Zykova, Natalya Popova, Mark Kalashnikov, and Irina Kurzina, Fine structure and phase composition of Fe-14Mn-1.2C steel:influence of a modified mixture based on refractory metals, Int. J. Miner. Metall. Mater., 24(2017), No. 5, pp. 523-529. https://doi.org/10.1007/s12613-017-1433-2

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Research Article

Fine structure and phase composition of Fe-14Mn-1.2C steel:influence of a modified mixture based on refractory metals

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Corresponding author:
Irina Kurzina E-mail: kurzina99@mail.ru
Received: 9 October 2016; Revised: 21 December 2016; Accepted: 22 December 2016

Abstract

Abstract

The effect of TiO₂, ZrO₂ and Na₃AlF₆ ultrafine powders on the fine structure and the phase composition of Fe-14Mn-1.2C steel was investigated. The introduction of the ultrafine powders into the melt influenced the grain size, the quantity, and the character of distribution of nonmetallic inclusions in the railroad frogs. The microstructure of castings was improved significantly because of the refinement of the grain structure and an increase of the grain-boundary area. After the modifying mixture was introduced into the melt, either the microtwins of one or two intersecting systems or the precipitations of ε-martensite of different types, or simultaneously the microtwins and wafers of ε-martensite, were present in each grain.
- manganese steel;
- fine structure;
- phase composition;
- refractory metals

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References

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