Archive - Электронный научный журнал "ТРУДЫ ВИАМ"

Articles

 


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1.
dx.doi.org/ 10.18577/2307-6046-2023-0-10-3-12
УДК 621.7
Skugorev A.V., Melnikova D.A., Tikhomirov E.O., Trishkin Yu.D.
AN ALLOY OF THE Fe–Cr–Al–Y SYSTEM AS A PROMISING MATERIAL FOR HONEYCOMB SEALS IN THE FLOW PATH OF GAS TURBINE ENGINE

The work is devoted to the development of a technology for producing a cold-rolled sheet from a heat-resistant alloy of the Fe–Cr–Al–Y system. The alloy of the Fe–Cr–Al–Y is intended for the manufacture of honeycomb seals for the flow path of gas turbine engines with an operating temperature of up to 1100 °С. This alloy is intended to replace heat-resistant alloys ЭИ435 and ЭИ868, which are currently used for the manufacture of honeycomb seals. In terms of heat resistance, the alloy of the Fe–Cr–Al–Y system is significantly superior to nickel alloys ЭИ435 and ЭИ868.

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2.
dx.doi.org/ 10.18577/2307-6046-2023-0-10-13-23
УДК 621.785.5:620.178
Sevalnev G.S., Vostrikov A.V., Nefedkin D.Yu., Moiseenkov V.V., Volkov R.B., Ulyanov E.I.
STUDY OF THE STRUCTURE, DISTRIBUTION OF CARBIDE PHASE, HARDNESS AND TRIBOTECHNICAL CHARACTERISTICS OF HIGH-CHROMIUM BEARING STEELS OF THE MARTENSITIC CLASS

The paper presents a comparative analysis of the microstructure, size and distribution of carbides, hardness and tribotechnical properties during research and testing under the same conditions of bearing steel grades 60Kh13S-ShD, 95Kh18-Sh and 110Kh18M-ShD, commercially used in the Russian industry. Based on the results of the research, steel grades were identified that have the best set of properties after hardening heat treatment.

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3.
dx.doi.org/ 10.18577/2307-6046-2023-0-10-24-34
УДК 621.763
Makushina M.A., Kochetkov A.S., Vinogradov I.D.
THE INFLUENCE OF VARIOUS MODES OF HOT ISOSTATIC PRESSED AND HEAT TREATMENT ON STRUCTURE AND PROPERTIES OF CASTINGS FROM THE VT40L ALLOY

This article presents the results of studies of the influence of various modes of hot isostatic pressing (HIP) and heat treatment on the mechanical properties and structure of cast samples from the VT40L alloy. The temperature of the polymorphic transformation in the alloy was determined experimentally using the test quenching method. Tensile tests were carried out to determine the short-term strength and yield strength, the endurance limit on the basis of N = 2·107 cycle, impact strength and hardness were determined. Based on the test results, a casting processing mode was selected that provides a set of properties necessary for parts of aircraft products.

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4.
dx.doi.org/ 10.18577/2307-6046-2023-0-10-35-42
УДК 669.018.95
Nyafkin A.N., Kosolapov D.V., Zhabin A.N.
INVESTIGATION OF THE INFLUENCE OF THE DIRECTION OF THE BASAL PLANES IN A CARBON FRAME AND A METAL COMPOSITE MATERIAL OF THE Al–C SYSTEM ON THE TEMPERATURE COEFFICIENT OF LINEAR EXPANSION

A porous carbon material and a metal composite material (MCM) based on an aluminum casting alloy of the Al–Si–Cu system containing 79±2 % (vol.) carbon, obtained using the vacuum-compression impregnation technology, have been studied. A study of the structure of MCM was carried out, the density, volumetric filling and temperature coefficients of linear expansion (TCLE) of the carbon frame and MCM were measured in the temperature range from 20 to 200 °C. It has been established that depending on the direction of the basal planes, the TCLE value decreases by 30–35 % at the carbon frame and by 15–20 % at MCM.

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5.
dx.doi.org/ 10.18577/2307-6046-2023-0-10-43-51
УДК 669.018
Bobrovkiy A.P., Atkin O.N., Efimochkin I.Yu., Bolshakova A.N.
AGGLOMERATION OF GRANULES OF HIGH-TEMPERATURE METAL-CERAMIC MATERIAL BASED ON MOLYBDENUM

The process of agglomeration of granules of high-temperature metal-ceramic material based on molybdenum by high-temperature diffusion is discussed. The dependence of the size of the obtained granules on the agglomeration temperature is established. The influence of the agglomeration temperature on the strength of diffusion bonds arising between granules during high-temperature exposure is given is demonstrated.

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6.
dx.doi.org/ 10.18577/2307-6046-2023-0-10-52-63
УДК 669.017.165
Serov M.M., Bezophen S.Ya., Patrushev A.Yu., Dvoretskov R.M., Elyutin E.S.
PRODUCTION OF MICROCRYSTALLINE ALLOY PARTICLES OF THE SYSTEM Cо(Ni, Fe)–Ti–В–С BY HIGH-SPEED SOLIDIGICATION OF THE MELT

Using the method of high-speed solidification of a hanging drop of a melt, discrete of the Ме–3TiC–2B4C, where Me is a metal Co, Ni or Fe. The microstructure of the alloy was studied, and mechanical properties of discrete fibers were obtained. To assess the effect of high-speed solidification of the melt on the properties of the alloys, cast samples were made without quenching. It was shown that the cobalt – based alloy in the initial state after quenching contains a metastable phase whit a face-centered cubic lattice, the proportion of which is 58 %. In addition, cobalt-based fibers contain metastable disperse intermetallic compounds of Co2B and Co3B.

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7.
dx.doi.org/ 10.18577/2307-6046-2023-0-10-64-81
УДК 678.747.2
Valueva M.I., Zelenina I.V., Nacharkina A.V., Boychuk A.S.
DETERMINATION OF THE GUARANTEED SHELF LIFE OF HIGH-TEMPERATURE POLYIMIDE CARBON FIBER REINFORCED PLASTIC PREPREG

The influence of conditions and duration of storage on the characteristics of a prepreg based on a melted thermosetting polyimide binder grade VS-51 and high-temperature carbon fiber reinforced plastic based on it are studied. In accordance with the data obtained, the guaranteed shelf life of the prepreg was determined in the temperature range from –(18±5) to +(20±5) °С. The binder, reinforcing carbon filler, prepreg and carbon fiber reinforced plastics were manufactured at the technological base of the NRC «Kurchatov Institute» – VIAM.

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8.
dx.doi.org/ 10.18577/2307-6046-2023-0-10-82-95
УДК 678.8
Donetskiy K.I., Khrulkov A.V., Gorodilova N.A., Melnikov D.A.
PROSPECTS FOR THE USE OF POLYMER COMPOSITE MATERIALS BASED ON FLAX FIBERS

Environmental problems, primarily such as the inability to recycle materials and, consequently, the formation of uncontrolled landfills, are powerful incentives for the development of biodegradable materials. Due to its environmental and economic advantages, as well as its technical characteristics, natural fibers become a likely replacement for synthetic ones for use as fillers in polymer composite materials. Flax fibers, due to their high availability and specific properties, are the most valuable products of the bast type. Physical and chemical processing of fibers allows them to be used for structural materials as well.

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9.
dx.doi.org/ 10.18577/2307-6046-2023-0-10-96-104
УДК 629.7.023
Fomina M.A., Zavarzin S.V., Dyomin S.A.
STUDY OF THE CORROSION RESISTANCE OF ALUMINUM SPECIMENS FROM 1163-AT ALLOY WITH CONDUCTIVE ELECTROPLATED COATINGS IN CONTACT WITH VKU-39/VTkU-2.200 CARBON FIBER

The use of parts made of polymer composite materials in the design of aircraft poses additional challenges to prevent contact corrosion. Polymer composite materials differ significantly in electrochemical properties from metal materials used in airframe construction. The article presents studies of the corrosion behavior of electrically conductive metal coatings in contact with carbon fibers by the method of constructing anodic and cathodic polarization curves, as well as the results of corrosion testing of fasteners with protective coatings in a salt fog chamber.

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10.
dx.doi.org/ 10.18577/2307-6046-2023-0-10-105-118
УДК 621.763
Sidorov D.V., Grunin А.А., Shavnev A.A.
FORMATION OF CARBON COATINGS IN THE PROCESS OF METHANE PYROLYSIS BY THE CHEMICAL VAPOR DEPOSITION

The article presents a review of the scientific and technical literature in the field of methane pyrolysis in the process of chemical vapor deposition of pyrolytic carbon, summarizes the results of studies of the process depending on the parameters of deposition and the substrates used, analyzes the compositions of pyrolysis products, mechanisms and pathways of chemical reactions.

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11.
dx.doi.org/ 10.18577/2307-6046-2023-0-10-119-131
УДК 629.7.023
Kuznetsova V.A., Emelyanov V.V., Marchenko S.A., Kovrizhkina N.A.
THE INFLUENCE OF ARTIFICIAL AGING ON THE PROPERTIES OF COATING SYSTEMS BASED ONCHROMATE-FREE PRIMER VG-44 USING EPOXY, POLYURETHANE, ACRYLIC URETHANE AND FLUOROPOLYURETHANE ENAMELS

The adhesion and impact strength of paint coating systems based on the chromate-free primer VG-44 with enamels VE-69, AK-1206, UR-1161 and EP-140 after artificial aging using the LI-14 method (–60÷+80) were studied.)°С during 16 cycles, as well as after thermal aging at temperatures of 80 °C – 1000 hours and 100 °C – 500 hours. The decorative properties of coatings based on the chromate-free primer VG-44 with enamels VE-69, AK-1206, UR-1161 and EP-140 after artificial aging were determined. It has been shown that artificial aging of the above paintwork systems does not have a significant effect on the strength of coatings upon impact, but leads to a decrease in tensile strength, as well as a decrease in the gloss of the coatings.

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12.
dx.doi.org/ 10.18577/2307-6046-2023-0-10-132-144
УДК 629.7.023.222
Kuznetsova V.A., Timoshina E.A., Shapovalov G.G., Zheleznyak V.G.
TRENDS IN THE DEVELOPMENT OF MATTE WEAR-RESISTANT PAINT COATINGS

The main development trends in the field of creating matte, wear-resistant paint and varnish coatings for painting instrument panels and aircraft cockpit elements are considered. The basic principles that should be followed when creating matte, wear-resistant paint and varnish coatings have been identified. The basic requirements that determine the selection of the main components for obtaining a matte wear-resistant coating are considered. Polymer film-forming agents and fillers have been identified for the development of coating compositions in accordance with the analysis. Leaders in the development of matte wear-resistant coatings have been identified.

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13.
CONTENТS

Heat-resistant alloys and steels

 

Skugorev A.V., Melnikova D.A., Tikhomirov E.O., Trishkin Yu.D. An alloy of the Fe–Cr–Al–Y system as a promising material for honeycomb seals in the flow path of gas turbine engines

 

Sevalnev G.S., Vostrikov A.V., Nefedkin D.Yu., Moiseenkov V.V., Volkov R.B., Ulyanov E.I. Study of the structure, distribution of carbide phase, hardness and tribotechnical characteristics of high-chromium bearing steels of the martensitic class

 

 

Light-metal alloys

 

Makushina M.A., Kochetkov A.S., Vinogradov I.D. The influence of various modes of hot isostatic pressed and heat treatment on structure and properties of castings from the VT40L alloy

 

Composite materials

 

Nyafkin A.N., Kosolapov D.V., Zhabin A.N. Investigation of the influence of the direction of the basal planes in a carbon frame and
a metal composite material of the Al–C system on the temperature coefficient of linear expansion

 

Bobrovskiy A.P., Atkin O.N., Efimochkin I.Yu., Bolshakova A.N. Agglomeration of granules of high-temperature metal-ceramice material based on molybdenum

 

Serov M.M., Betsofen S.Ya., Patrushev A.Yu., Dvoretskov R.M., Elyutin E.S. Production of microcrystalline alloy particles of the system Cо(Ni, Fe)–Ti–В–С by high-speed solidigication of the melt

 

Valueva M.I., Zelenina I.V., Nacharkina A.V., Boychuk A.S. Determination of the guaranteed shelf life of high-temperature polyimide carbon fiber reinforced plastic prepreg

 

Donetskiy K.I., Hrulkov A.V., Gorodilova N.A., Melnikov D.A. Prospects for the use of polymer composite materials based on flax fibers

 

Protective and functional

coatings

 

Fomina M.A., Zavarzin S.V., Demin S.A. Study of the corrosion resistance of aluminum specimens from 1163-AT alloy with conductive electroplated coatings in contact with VKU-39/VTkU-2.200 carbon fiber

 

 

Sidorov D.V., Grunin A.A., Schavnev A.A. Formation of carbon coatings in the process of methane pyrolysis by the chemical vapor deposition

 

Kuznetsova V.A., Yemelyanov V.V., Marchenko S.A., Kovrizhkina N.A. The influence of artificial aging on the properties of coating systems based onchromate-free primer VG-44 using epoxy, polyurethane, acrylic urethane and fluoropolyurethane enamels

 

 

Kuznetsova V.A., Timoshina E.A., Shapovalov G.G., Zheleznyak V.G. Trends in the development of matte wear-resistant paint coatings

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