Connections of the Microstructure of the Fe-Al (25-33%wt.) with its Composition and Cooling Rate from the Liquid State

Oleg Y. Sheshukov; Valentina P. Ermakova; Larisa A. Marshuk; Valentina G. Smirnova; Vladimir V. Kataev

doi:10.4028/www.scientific.net/AMR.602-604.594

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 602-604Connections of the Microstructure of the Fe-Al...

Connections of the Microstructure of the Fe-Al (25-33%wt.) with its Composition and Cooling Rate from the Liquid State

Abstract:

Laboratory researches of cooling rate influence on matrix structure, composition and quantity of nonmetallic inclusions in iron-aluminum alloys, containing 25-33%Al, are conducted. Thermodynamic modeling of composition and quantity of phases, which were formed in alloy system, containing Fe-Al-Si-C-O, for equilibrium conditions by means of the program complex ASTRA-4 (TERRA) is carried out. It is established, that irrespective of cooling rate the matrix has structure of intermetallic Fe-Al, and nonmetallic inclusions have platelet shape and composite of iron and aluminum oxy-carbides. It is confirmed, that ferroalloy with the optimal structure, necessary for receiving the high heat-resistance cast iron, should be cooled after smelting with the highest speed in these condition.

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Periodical:

Advanced Materials Research (Volumes 602-604)

Pages:

594-597

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.602-604.594

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Online since:

December 2012

Authors:

Oleg Y. Sheshukov, Valentina P. Ermakova, Larisa A. Marshuk, Valentina G. Smirnova, Vladimir V. Kataev

Keywords:

Composition, Cooling Rate, Fe-Al Ferroalloy, Heat-Resistance Cast Iron, Microstructure, Structural Heredity, Thermodynamic Modeling

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