Articles

 


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1.
dx.doi.org/ 10.18577/2307-6046-2022-0-9-3-14
УДК 669.15
Vostrikov A.V., Sevalnev G.S., Bannykh I.O., Vlasov I.I., Romanenko D.N., Dulnev K.V.
MICROSTRUCTURE, HARDNESS AND TRIBOTECHNICAL PROPERTIES EVOLUTION OF ECONOMICALLY ALLOYED HIGH NITROGEN MARTENSITIC STEEL

Metallographic studies of the structure and tribological studies in conditions of dry sliding friction of sparingly alloyed high nitrogen steel samples after quenching in the temperature range from (Ac3 – 50) to (Ac3 + 250) °C were carried out in this work. Metallographic analysis showed that with an quenching temperature increasing, the grain size increases and the martensitic structure fineness decreases. According to the tribological studies results, it was found that after quenching in the temperature range (Ac3 + 100)–(Ac3 + 150) °C, the content of austenite saturated with carbon and nitrogen increases, which leads to a decrease in the friction coefficient and an increase in wear resistance.

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2.
dx.doi.org/ 10.18577/2307-6046-2022-0-9-15-27
УДК 621.762:669.24:621.791
Mazalov I.S., Volkov A.M., Lomberg B.S., Chabina E.B.
MICROSTRUCTURE AND MECHANICAL PROPERTIES OF Ni-BASE SUPERALLOY VZh172, PRODUCED FROM GRANULES BY METHOD OF HOT ISOSTATIC PRESSING

Material, obtained by HIP-consolidated powder of Ni-base superalloy VZH172 had been investigated. Influence of HIP temperature on grain microstructure of consolidated material was determined; distribution of eutectic phase in structure was investigated. Mechanical testing of the HIP-processed blank of VZH172 alloy after heat-treatment was carried out. The results were compared with the properties of wrought material produced by the conventional technology.

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3.
dx.doi.org/ 10.18577/2307-6046-2022-0-9-28-38
УДК 621.791
Panteleev M.D., Sviridov A.V., Skupov A.A.
WELDING FEATURES OF HEAT-RESISTANT ALUMINUM ALLOYS V-1213 AND 1151

It is shown in this work the advantages of using Al–Cu–Mg system heat-resistant aluminum alloys in the fuselage elements of supersonic aircraft. Comprehensive studies of welded joints of aluminum alloys V-1213 and 1151 sheets produced by laser welding and friction stir welding have been carried out. Tests for weldability, strength, plasticity were carried out and low-cycle fatigue of welded joints was determined. The results of tests within the studied ranges of laser welding and friction stir welding modes of alloys V-1213 and 1151 are presented.

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4.
dx.doi.org/ 10.18577/2307-6046-2022-0-9-39-57
УДК 669.295.5:621.785.376
Pavlova T.V., Kashapov O.S., Kalashnikov V.S., Kondrateva A.R.
INDUSTRIAL DEVELOPMENT OF MANUFACTURING LARGE-SIZE FORGINGS FROM HEAT-RESISTANT TITANIUM ALLOY VT41 FOR WELDED ASSEMBLIES OF AIRCRAFT PRODUCTS

The results of the work of the NRC «Kurchatov institute» – VIAM for the development of production of semi-finished products from heat-resistant titanium pseudo-α-alloy VT41. The directions of adjustment of the alloy composition, and the prospects of wider application of alloy in the manufacture of welded components of gas turbine engines are presented. Foreign experience of manufacturing of deformable semi-finished products from the analog alloy Ti-834 (IMI 834) is given. The peculiarities of microstructure and its components formed at various conditions of heat treatment are considered.

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5.
dx.doi.org/ 10.18577/2307-6046-2022-0-9-58-67
УДК 621.315.616.7
Chaykun A.М., Yumashev O.B.
FEATURES OF THE DEVELOPMENT OF THE FORMULA OF FROST-RESISTANT OZONE-RESISTANT RUBBER BASED ON EPDM RUBBER

The article shows the main directions for the development of a formulation for frost-resistant ozone-resistant rubber for sealing purposes. Currently, there are problems with the durability of the operation of parts made of rubber grade NO-68-1 due to the instability of the raw material base of rubbers. A comprehensive analysis of rubbers of various composition and structure was carried out. Based on the results of the analysis, ethylene-propylene, ethylene-propylene diene, and propylene oxide rubbers were selected as the polymer base. Mixtures of various compositions are made from these rubbers. According to the test results, the optimal composition of frost-resistant ozone-resistant rubber was selected.

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6.
dx.doi.org/ 10.18577/2307-6046-2022-0-9-68-82
УДК 678.8
Sarychev I.A. S, Butuzov A.V., Serkova E.A., Dolgova E.V.
PHOTOCURABLE ACRYLATE COMPOSITIONS (review)

A review of photocurable acrylate compositions, which can be used for a wide range of tasks, including 3D printing, has been carried out. The main (meth)acrylate monomers, oligomers and diluents, comonomers and special additives are considered. The influence of the structure of monomers and active diluents on the properties of the polymer is described. The mechanisms of photoinitiation and the mechanisms of chain transfer agents are presented. The influence of the introduction of epoxy resins into the composition of photocurable acrylate compositions is indicated. The conclusion is made about the possibilities of wide modification of such compositions.

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7.
dx.doi.org/ 10.18577/2307-6046-2022-0-9-83-98
УДК 678.067.5
Barannikov A.A., Sudyin Yu.I., Veshkin E.A, Satdinov R.A.
APPLICATION OF FIBERGLASS BRAND VPS-53K, PROCESSED ATMOSPHERIC PRESSURE PLASMA, IN THE MANUFACTURE OF AIRCRAFT PRODUCTS

The article is devoted to the testing of fiberglass grade VPS-53K treated with atmospheric pressure plasma in the production environment of the manufacturer of the main and tail rotor blades of a helicopter. It has been established that atmospheric pressure plasma increases the wettability of the fiberglass surface and the strength of the adhesive joint of «the spar‒sheathing» (fiberglass grade VPS-53K). The guaranteed time interval between the processing of fiberglass with atmospheric pressure plasma and the gluing process is no more than 6 mon.

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8.
dx.doi.org/ 10.18577/2307-6046-2022-0-9-99-110
УДК 669.018.95
Zhabin A.N., Nyafkin A.N.
FIBROUS METAL COMPOSITE MATERIALS BASED ON COPPER (review)

A scientific and technical literature review is presented in the field of research on copper-based fibrous composite materials (CM) reinforced with continuous silicon carbide fibers. The main methods of manufacturing fibrous CMs based on copper are briefly mentioned. The influence of volume fractions on the reinforcement of CM, on the mechanical and thermophysical properties of fibrous CM based on copper is considered. A study of the influence of the structure of a fibrous CM based on copper with the use of binders as adhesive components with the formation of a strong bond between the copper matrix and fiber on the properties of CM is described.

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9.
dx.doi.org/ 10.18577/2307-6046-2022-0-9-111-120
УДК 544.43
Sidorov D.V., Kirilin A.D., Shavnev A.A., Melentev A.A., Flotskiy А.А., Grunin А.А.
TRANSITION STATE CHEMICAL REACTION PRODUCING SILAETHYLENE FROM METHYLSILANE

The article is described to a theoretical study by quantum chemistry of the reaction of silaethylene formation from methylsilane by hydrogen elimination with the search for a transition state. Geometry and thermodynamic characteristics of molecular structures were calculated. The search for the transition state was carried out by scanning the potential energy surface of the molecule of the proposed structure. The calculation of the rate constant and activation energy of the direct reaction of the formation of an intermediate state for the chemical reaction 1,2-hydrogen elimination has been carried out.

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10.
dx.doi.org/ 10.18577/2307-6046-2022-0-9- 121-130
УДК 621.762.4.04.016.2
Movenko D.A., Zaysev D.V., Medvedev P.N.
EXPERIMENTAL STUDY OF POLYCRYSTALLINE CERAMIC MATERIAL BASED ON LANTHANUM HEXABORIDE

The analysis of the influence of technological parameters on the structure of a polycrystalline material based on lanthanum hexaboride produced by spark plasma sintering is carried out. It is established that an increase in the sintering temperature from 1700 to 1850 °C contributes to the formation of a favorable structure of ceramic material with equiaxed grains up to 30 microns in size and closed small-sized pores with a volume fraction of up to 3 %. Alloying ceramic material with nickel to its content of no more than 0.5 % by weight allows to obtain such a structure at a lower sintering temperature: 1700 °C.

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11.
dx.doi.org/ 10.18577/2307-6046-2022-0-9-131-142
УДК 614.841.12:536.46
Volnyj O.S., Barbotko S.L., Venediktova M.A., Lutsenko A.N.
THE METHODOLOGICAL FEATURES OF TESTING ON FIRE RESISTANCE THE SAMPLES WITH INTUMESCENT COATINGS

Fire tests were carried out to determine the effectiveness of the fire-retardant intumescent coating. It has been established that the standard methodology for conducting fire tests does not provide adequate reproducible results. A modification of the methodology was proposed and a large number of samples (˃30) were tested. It has been established that when using a modified test procedure, high reproducibility of the results obtained is ensured.

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12.
dx.doi.org/ 10.18577/2307-6046-2022-0-9-143-160
УДК 539.612
Marchenko S.A., Zheleznyak V.G., Kuznetsova V.A.
ICE ADHESION. METHODS OF DETERMINATION (review)

Currently, to determine the degree of de-icing protection when using anti-icing coatings, experimental benches and laboratory installations are used, in which in most cases two types of tests are performed: direct mechanical and centrifugal force. The variety of methods, facilities, and other various factors makes it difficult to compare the established data and the required characteristics of anti-icing properties of coatings. An analysis of the methods and installations used to determine ice adhesion, as well as the factors that can affect the test results, has been conducted.

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13.
CONTENТS

Heat-resistant alloys and steels

 

Vostrikov A.V., Sevalnev G.S., Bannykh I.O., Vlasov I.I., Romanenko D.N., Dulnev K.V. Microstructure, hardness and tribotechnical properties evolution of economically alloyed high nitrogen martensitic steel

 

 

 

Mazalov I.S., Volkov A.M., Lomberg B.S., Chabina E.B. Microstructure and mechanical properties of Ni-base superalloy VZh172, produced from granules by method of hot isostatic pressing

 

 

Light-metal alloys

 

Panteleev M.D., Sviridov A.V., Skupov A.A. Welding features of heat- resistant aluminum alloys, alloy V-1213 and 1151

 

Pavlova T.V., Kashapov O.S., Kalashnikov V.S., Kondrateva A.R. Industrial development of manufacturing large-size forgings from heat-resistant titanium alloy VT41 for welded assemblies of aircraft products

 

Polymer materials

 

Chaykun A.M., Yumashev O.B., Sergeev A.V. Features of the development of the formula of frost-resistant ozone-resistant rubber based on EPDM rubber

 

Sarychev I.A., Butuzov A.V., Serkova E.A., Dolgova E.V. Photocurable acrylate compositions (review)

Composite materials

 

Barannikov A.A., Sudyin Yu.I., Veshkin E.A., Satdinov R.A. Application of fiberglass brand VPS-53K, processed atmospheric pressure plasma, in the manufacture of aircraft products

 

Zhabin A.N., Nyafkin A.N. Fibrous metal composite materials based on copper (review)

 

Material tests

 

Sidorov D.V., Kirilin A.D., Schavnev А.А., Melentev А.А., Flotskiy А.А., Grunin А.А. Transition state chemical reaction producing silaethylene from methylsilane

 

 

Movenko D.A., Zajcev D.V., Medvedev P.N. Experimental study of polycrystalline ceramic material based on lanthanum hexaboride

 

 

Volniy O.S., Barbotko S.L., Venediktova M.A., Lutsenko A.N. The methodological features of testing on fire resistance the samples with intumescent coatings

 

 

MarchenkoS.A., ZheleznyakV.G., Kuzne-tsovaV.A.Iceadhesion. Methods of determination (review)

 

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