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Influence of Titanium and Zirconium on the Structure and Heat-Resistance of Low-Carbon Iron–Aluminum Alloys

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Abstract

The paper considers the effect of introducing ferroalloys containing titanium and zirconium on the structure and heat-resistance of low-carbon ferroalloys. Theoretically and experimentally, it has been proven that the addition of 1.0 wt % of titanium and 0.1 wt % of zirconium to a low-carbon iron-aluminum melt containing 12–14 wt % of aluminum grinds its structure increasing tensile strength and refractory properties. Titanium and zirconium are strong carbide-forming elements. When introduced into a low-carbon iron-aluminum alloy, they form a large number of crystallization centers, thus, affecting its microstructure, allowing to get finer and more uniform granularity compared to an alloy without additive. This in turn increases the strength limit of processed alloy. In addition, the use of titanium as a modifying additive in a low-carbon ferroalloy allows increasing its heat-resistance, which exceeds several times the heat-resistance of famous chrome-nickel steel of Fe20Cr23Ni18 grade. As a result, a new technology for obtaining titanium and zirconium was developed based on research of the effect of their modifying additives on the structure and heat-resistance of low-carbon iron-aluminum alloys.

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ACKNOWLEDGMENTS

The authors express their gratitude to V.P. Ermakova and V.G. Smirnova from the Institute of Metallurgy of the Ural Branch of the Russian Academy of Sciences for cooperation and assistance in preparation of this article.

Funding

The work was performed in accordance with the State task of IMET UB RAS “Structural physicochemical and mechanical properties of aluminum and copper alloys and composites for structural and electrical purposes” (no. 0396-2015-0078) using the equipment of the Ural-M Center for Collective Use.

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  1. Institute of Metallurgy, Ural Branch of the Russian Academy of Science, 620016, Yekaterinburg, Russia

    O. Yu. Sheshukov & V. V. Kataev

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  1. O. Yu. Sheshukov
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  2. V. V. Kataev
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Correspondence to O. Yu. Sheshukov or V. V. Kataev.

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Translated by F. Baron

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Sheshukov, O.Y., Kataev, V.V. Influence of Titanium and Zirconium on the Structure and Heat-Resistance of Low-Carbon Iron–Aluminum Alloys. Steel Transl. 51, 621–626 (2021). https://doi.org/10.3103/S0967091221090114

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