Russian Metallurgy (Metally)

Journal Article

Loose Abrasive Finishing of Parts Made of Powder Materials

Skryabin, V. A.; Zverovshchikov, A. E.

2023 Russian Metallurgy (Metally)

—This paper presents experimental results on the machining of parts fabricated from powder materials. The specifics of porous surface structure formation in powder-metallurgy parts upon abrasive finishing are described.

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Journal Article

Some Case Studies of Mine Support Biocorrosion in Underground Workings in Various Climatic Zones

Dashko, R. E.; Vlasov, D. Yu.; Romanov, I. S.

2023 Russian Metallurgy (Metally)

doi:10.1134/s0036029523700027

The paper demonstrates that deformations and failures of metal support in underground workings of the Yakovlevskoye deposit of high-grade iron ores and the Kupol gold-and-silver mine (the Chukchi Peninsula) are caused by microorganisms. The main source of microbiota is highly saline ground waters...

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Journal Article

Estimation of Deformation Site Parameters for Symmetric and Asymmetric Rolling of a Strip Using Computer Simulation

Kozhevnikov, A. V.; Skripalenko, M. M.; Kozhevnikova, I. A.; Skripalenko, M. N.; Sidorov, A. A.;

2023 Russian Metallurgy (Metally)

doi:10.1134/s0036029523700039

Computer simulation of longitudinal rolling is performed for different combinations of the diameters of the upper and lower rolls: 600–600, 590–600, 570–600, and 300–600 mm. The rolling for each variant of combinations of working roll diameters has been carried out in three passes (the initial...

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Journal Article

Effect of Remelting and Solidification Features on the Structure of Cast Fast-Cooled Ferrosilicon Inserts and Lump Ferrosilicon

Boldyrev, D. A.; Popova, L. I.; Prasolov, S. G.

2023 Russian Metallurgy (Metally)

doi:10.1134/s0036029523700040

An electron-microscopic study of the structural-phase composition of materials for late graphitizing modification of cast iron melt is carried out in the mold pouring bowl (FeSi75 lump (AO Chelyabinsk Electrometallurgical Integrated Plant (ChEMK))) and inside the mold (cast insert in the sump...

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Journal Article

Development of a Technology of Production of a Hafnium–Nickel Master Alloy in a Vacuum Arc Furnace for the Alloying of Cast Nickel Superalloys

Min, P. G.; Pitelin, N. S.; Vadeev, V. E.

2023 Russian Metallurgy (Metally)

doi:10.1134/s0036029523700052

A technology of producing a high-quality hafnium–nickel GfNi10 master alloy is developed: it is produced in a vacuum arc furnace with a nonconsumable electrode using a preliminary annealed pressed electrolytic hafnium powder. The total content of impurities and oxygen and nitrogen gases in the...

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Journal Article

Influence of the Parameters of a Modifier on the Structure Formation in Vermicular Graphite Iron in Camshaft Castings

Boldyrev, D. A.; Popova, L. I.

2023 Russian Metallurgy (Metally)

doi:10.1134/s0036029523700064

The influence of the type (grits from an ingot, a quick-cooled plate) and size of the fraction of a modifier and the REM content on the structural of camshaft castings made of ChVG40 vermicular graphite iron (VGI) are studied.

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Journal Article

Efficiency of an Alternative Silicon-Containing Material for Ironmaking

Boldyrev, D. A.

2023 Russian Metallurgy (Metally)

doi:10.1134/s0036029523700416

A silicon-containing material based on non-market (unsized) fractions of the magnesium-containing modifiers for the production of high-strength cast iron and vermicular graphite cast iron (VGCI) is proposed for ironmaking as an alternative of the popular FeSi45 ferroalloy. The economical scheme...

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Journal Article

Thermal Analysis of the Influence of the Cast Iron Modification Parameters on the Solidification Parameters

Boldyrev, D. A.

2023 Russian Metallurgy (Metally)

doi:10.1134/s0036029523700507

Thermal analysis (TA) of modified gray cast iron (GCI) and vermicular graphite cast iron (VGCI) treated by foreign and domestic graphitizing and spheroidizing modifiers is conducted on a TA device using data processing software. Cooling curves (current temperature measured in solidification time,...

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Journal Article

Stability of Titanium Carbide Introduced into a Weldpool

Kobernik, N. V.; Pankratov, A. S.; Galinovskii, A. L.; Aleksandrova, V. V.; Andriyanov, Yu. V.;

2023 Russian Metallurgy (Metally)

doi:10.1134/s0036029523700076

The possibility of introduction of titanium carbide into a weldpool is studied. Titanium carbide forms in the metal deposit structure due to proper in situ alloying. However, the in situ technology is rather complicated because of difficulties associated with the impossibility of controlling the...

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Journal Article

Effect of Heat Treatment on the Structure and Properties of a D16 Aluminum Alloy

Kutepova, L. V.; Volgina, N. I.; Khlamkova, S. S.

2023 Russian Metallurgy (Metally)

doi:10.1134/s0036029523700088

Heat treatment conditions are chosen in accordance with alloys and production method of blanks and parts made from them. The heat treatment of parts produced from aluminum alloys is based on the fact that, as the temperature decreases, the solubility of many elements in solid aluminum deceases....

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