Structural Features and Distribution of Silicon in Ferrosilicon-Magnesium Modifiers

Denis Boldyrev; Sergey I. Platov; Maksim V. Kharchenko; Nikolay V. Urtsev

doi:10.4028/www.scientific.net/MSF.1037.322

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HomeMaterials Science ForumMaterials Science Forum Vol. 1037Structural Features and Distribution of Silicon in...

Structural Features and Distribution of Silicon in Ferrosilicon-Magnesium Modifiers

Abstract:

It is noted that the technology for the manufacture of ferrosilicon-magnesium modifiers (crystallization into an ingot in a mold or into a chip on a water-cooled drum) forms their quantitative and qualitative structural differences: the size and distribution of phases, the scatter of the content of elements, etc. The fundamental differences are shown and the features of the distribution of silicon as a base element in ingot and chip modifiers are described. It was found that in ingot modifiers the vast majority of silicon-containing phases are ξ(FeSi) and ζ' (FeSi₂), and with a significantly lower content of pure silicon particles and phases, these are α₁(Fe₃Si) and α₂(Fe₂Si). The picture of the phase structure of the modifier chip has been determined. In it, the 1st mode corresponds to the presence of a set of phases α₁(Fe3Si) and α₂(Fe2Si), and the 2nd mode, as well as in the ingot modifiers ξ (FeSi) and ζ'(FeSi2), but is shifted to the lower boundary of the region their existence. Particles of pure silicon are completely absent in the chip modifier.

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Periodical:

Materials Science Forum (Volume 1037)

Pages:

322-328

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.1037.322

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Online since:

July 2021

Authors:

Denis Boldyrev, Sergey I. Platov, Maksim V. Kharchenko*, Nikolay V. Urtsev

Keywords:

Chips, Ferrosilicon-Magnesium Modifiers, Ingot

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