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Zaporozhe, Ukraine

Sharapova V.V.,GP UkrNIIspetsstal
Refractories and Industrial Ceramics | Year: 2011

Combined methods are used to study the lining of a ferroalloy furnace after service. It is established that periclase-chromite refractories are subject to chemical corrosion. Readily melting silicates and a metal phase form in a furnace lining, and reducing processes occur with participation of silicon, chromium and nickel sub-oxides. © 2011 Springer Science+Business Media, Inc. Source


Sharapova V.V.,GP UkrNIIspetsstal
Refractories and Industrial Ceramics | Year: 2011

Results are provided for a study of a rammed compensation layer of the lining of a ferroalloy furnace RTP-2 after service. It is established within the layer gaseous components from oxygen compounds of silicon, titanium, aluminum, iron, and also gaseous potassium and titanium, condense in the layer and are disproportionated. In the carbon mass there is precipitation of silicon monoxide, and reaction products of both complexes and rammed layer carbon material. © 2011 Springer Science+Business Media, Inc. Source


Kunitskaya I.N.,GP UkrNIIspetsstal | Spektor Ya.I.,GP UkrNIIspetsstal | Olshanetskii V.E.,Kharkiv Polytechnic Institute
Metal Science and Heat Treatment | Year: 2012

The kinetics is studied and the mechanism of dynamic recrystallization is amended for the alloyed Cr - Ni - Mo - Ti austenite of special steels upon multipass hot deformation by rolling and twisting in the range of 900 - 1300°C. The structural features of nucleation of fine and ultrafine dynamically recrystallized grains are determined. The effect of the excess carbide, nitride and intermetallic phases on the kinetics and on the degree of dynamic recrystallization of the special steels is analyzed with allowance for their morphology and nonuniform distribution (including the segregation one). It is shown that it is possible to obtain an ultrafine-grained structure using the effect of dynamic recrystallization and severe plastic deformation with controlled temperature and time parameters. © 2012 Springer Science+Business Media, Inc. Source

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