FEATURES OF CHANGING THE GRAIN STRUCTURE IN Fe–Ni–Co–Mo–TiMARAGING STEEL UNDER DIFFERENT HEAT TREATMENT MODES

Studies have been carried out on changes in the grain structure in Fe–Ni–Co–Mo–Ti maraging steel under various heat treatment modes and the sizes and areas of grains have been determined for each treatment, including homogenization annealing. It was found that the application of a series of recrystallization hardening leads to the best grain grinding however, the degree of heterogeneity is higher than with modified modes. The modified modes are characterized by a low degree of different grain sizes, which has a positive effect on the level of properties.

Keywords: maraging steels, grain, grain grinding, different grain sizes, heat treatment, aging

Reference List

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Full version

DOI: 10.18577/2713-0193-2024-0-3- 14-24

UDC: 669.018.28:669.715

A.V. Trapeznikov¹, K.A. Vlasova¹, Yu.V. Reshetnikov¹

TABLETED MODIFIERS FOR CAST ALUMINUM ALLOYS

The results of studies of the influence of tableted modifiers of four different compositions, developed at the National Research Center «Kurchatov Institute» – VIAM, on the mechanical properties of cast aluminum alloys AK7pch and AM5 in the T4 and T5 state are considered. All compositions retain their modifying abilities for 3 hours, with a slight decrease in mechanical properties, however, a deterioration in technological properties is possible during prolonged exposition. Porosity in alloys does not change with increasing exposure time of the melt in the furnace, and is at the same level in all samples, regardless of the composition of the modifier.

Keywords: cast aluminum alloys, mechanical properties, microstructure, modifier, porosity, fractography

Reference List

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Full version

DOI: 10.18577/2713-0193-2024-0-3-25-34

UDC: 669.721.5

A.A. Leonov¹, N.V. Trofimov¹, V.G. Panaetov², S.V. Kudasov³, А.V. Shirokozhukov²

MAGNESIUM ALLOYS IN THE DESIGN OF NAVIGATION SYSTEM PRODUCTS

In the article results of researches of castings of typical details «Body», «Cover», the «Body of the block of laser gyroscope», made of magnesium alloys for the first time in the Russian Federation for aviation instrument making. The main operating conditions are considered. We conducted researches of melting and molding parameters of thin-walled castings, achieved high strength characteristics of the alloy that defines further advantages in use of specified products in the aircraft industry.

Keywords: magnesium alloys, navigation system, modifying, refinement

Reference List

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Full version

DOI: 10.18577/2713-0193-2024-0-3-35-50

UDC: 669.018.44:669.295

M.S. Oglodkov¹, O.S. Kashapov¹, V.S. Kalashnikov¹, A.R. Kondratieva¹

COMPARATIVE ANALYSIS OF THE CHARACTERISTICS OF DOMESTIC ALLOYS VT8, VT8M, VT8M-1, VT9 AND Ti6242S ALLOY (USA) AS APPLIED TO HIGH-PRESSURE COMPRESSOR BLADES OF AIRCRAFT GAS TURBINE ENGINES

The article presents the results of testing the material of the same type of blade stampings from serial heat-resistant titanium alloys of grades VТ8M, VТ8M-1, VТ9 and VТ8. An assessment of the characteristics of materials during tensile testing (room and elevated temperatures) and creep is given. A comparison of serial alloys with the most commonly used foreign alloy Ti6242applied in production of high pressure compressor blades and regarded as the analogue to the mentioned local alloys.

Keywords: titanium alloys, heat-resistance titanium alloys, high pressure compressor, gas turbine engines, strength, creep, microstructure

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46. Krokhinа V.A., Arislanov A.A., Putyrskiy S.V., Naprienko S.A. Investigation of the influence of heat treatment modes in the β-region on the structure and mechanical properties of semifinished products from the VT22M alloy. Trudy VIAM, 2023, no. 8 (126), paper no. 03. Available at: http://www.viam-works.ru (accessed: June 06, 2024). DOI: 10.18577/2307-6046-2023-0-8-25-34.

Full version

DOI: 10.18577/2713-0193-2024-0-3-51-68

UDC: 678.8

A.V. Samoryadov¹, E.V. Kalugina², V.V. Bitt², Yu.G. Parshikov¹, A.T. Ergashev²

DEVELOPMENT AND RESEARCH OF THE PROPERTIES OF COMPOSITE MATERIALS BASED ON THERMOPLASTIC HYBRID POLYMER MATRIX

The physico-chemical studies of heat resistance and temperature transitions in the heating and cooling mode using TGA/DTA, DSC, DMA methods and the results of physico-mechanical tests showed that the use of hybrid polymer matrices based on a mixture of polyphenylene sulfide and polyamide 66 makes it possible to obtain more affordable polymer composites (PCM) with high heat resistance, technological and strength characteristics, which can successfully compete with PCM based on polyphenylene oxide, polyarylate, polyetherimide, polysulfone, and others engineering thermoplastics.

Keywords: polyphenylene sulfide, polyamide 66, compounds, thermostability, relaxation, melt flow index, properties

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Full version

DOI: 10.18577/2713-0193-2024-0-3-69-80

UDC: 678.742.2

E.Sh. Imametdinov¹, M.I. Valueva¹

PROMISING MATERIALS: OVERVIEW OF WORKS IN THE FIELD OF ULTRAHIGH MOLECULAR WEIGHT POLYETHYLENE. Part 1

The first part of the review provides information on the global market of ultrahigh molecular weight polyethylene (UHMWPE). A description of the raw material base, structure and properties of UHMWPE is presented. Imported and domestic brands of UHMWPE are given, the issue of UHMWPE production in the Russian Federation is considered. Based on the results of the analysis of scientific and technical literature and world experience in research in the field of UHMWPE, the difficulties in obtaining and processing this thermoplastic in the form of a fiber or polymer matrix as well as possible methods for solving them were identified. The prospects of using materials based on UHMWPE have been shown.

Keywords: promising materials, ultrahigh molecular weight polyethylene, thermoplastic materials, properties, structure, production, processing, market

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Full version

DOI: 10.18577/2713-0193-2024-0-3-81-89

UDC: 678.83:699.81

G.F. Zhelezina¹, G.S. Kulagina¹, N.A. Soloveva¹, S.L. Barbotko¹

INFLUENCE OF COMPOSITION AND STRUCTURE ON THE FIRE RESISTANCE OF ARAMID ORGANOPLASTICS

In article the resistance of aramide organoplastics to the penetration of flame with a temperature of 1100 °С, created by a gas burner located under the sample are presented. It is established that the shockproof organoplastic VKO-20 with a thickness of 4,0 mm is fireproof (does not allow flame penetration within not less than 15 min). The influence of structure on the fire resistance of organoplastcs is investigated. It is shown that organoplastic VKO-20 with a «partially monolithic» structure (due to the arrangement of the matrix mainly between the layers of the reinforcing filler) is superior in fire resistance to the standard monolithic organoplastic Organit 16Т.

Keywords: aramid fibers, organoplastics, fire danger, fire impermeability, partition of a luggage compartment, aviation equipment

Reference List

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18. Antipov V.V., Konovalov A.N., Serebrennikova N.Yu., Somov A.V., Nefedova Yu.N. Influence of structure on fire resistance and fireproof FMLS SIAL-type and possibility of application of data of materials in aircraft industry. Trudy VIAM, 2019, no. 1 (73), paper no. 05. Available at: http://viam-works.ru (accessed: June 17, 2023). DOI: 18577/2307-6046-2019-0-1-40-46.
19. Kablov E.N., Antipov V.V., Girsh R.I., Serebrennikova N.Y., Konovalov A.N. Fiber Metal Laminates Based on Aluminum–Lithium Alloy Sheets in New-generation Aircraft. Russian Engineering Research, 2021, vol. 41, no. 3, pp. 215–221.
20. Antipov V.V., Serebrennikova N.Yu., Konovalov A.N., Nefedova Yu.N. Perspectives of application of fiber metal laminate materials based on aluminum alloys in aircraft design. Aviacionnye materialy i tehnologii, 2020, no. 1 (58), pp. 45–53. DOI: 10.18577/2071-9140-2020-0-1-45-53.
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Full version

DOI: 10.18577/2713-0193-2024-0-3-90-105

UDC: 544.72.02:691.175

D.A. Gurov¹, Yu.A. Egorov¹, S.V. Kondrashov¹

3D PRINTING OF COMPOSITES REINFORCED WITH CONTINUOUS FIBER OR FIBRILS (review)

The main manufacturing technologies of thermoplastic filaments based on engineering thermoplastics reinforced with continuous fibers or fibrils are considered. The key problems that arise during production of filaments and further processing during 3D printing, and their solutions are described. To obtain high mechanical properties of the products, it is necessary to take into account the fundamental patterns of non-stationary processes of formation of the structure of the polymer matrix between the filler, matrix, and melt layers on mesoscale, however there are very few studies related.

Keywords: additive technologies, continuous fiber, filament, 3D printing, thermoplastics, polyetheretherketone, liquid crystal polymers, mesoscale, phase boundary

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Full version

DOI: 10.18577/2713-0193-2024-0-3-106-118

UDC: 62-752.2 + 06

V.I. Kolesnikov¹, S.L. Chernyshev², I.V. Kolesnikov¹, P.A. Koropets¹, V.D. Vermel², A.N. Koryakin², K.N. Polityko¹

MODERNIZATION OF THE LOW-AMPLITUDE FRICTION DAMPER WITH VACUUM ION-PLASMA COATING OF FRICTION WORKING SURFACES

A friction damper with rotational friction pairs of the «shaft–sleeve» type is considered, in which small linear displacements are transformed into significant angular displacements due to the eccentric application of loads. The application of ion-plasma coatings on friction surfaces is an indispensable condition for reliable operation of the damper. Friction pairs operate in reverse mode, which, when changing the direction of rotation, leads to additional dynamic loads in the elements of the damper structure. The higher the coefficient of friction, the higher the amplitude of the loads. The reduction of the coefficient of friction, as well as an increase in the dissipative properties of the annular spring due to the introduction of additional friction elements into its design, makes it possible to reduce the above-mentioned loads to a minimum.

Keywords: damper, force, amplitude, vibrations, hinge, friction pair, coating, annular spring, eccentricity, absorption coefficient

Reference List

1. Vermel V.D., Zichenkov M.Ch., Koryakin A.N. et al. Research of mechanical dampers with rotational sliding friction pairs. Tribology for mechanical engineering: XIII Int. scientific and technical conf. Moscow: Blagonravov Institute of Mechanical Science of RAS, 2020, pp. 68–71.
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Full version

10.

DOI: 10.18577/2713-0193-2024-0-3-119-133

UDC: 621.892

K.M. Khmeleva¹, A.V. Knyazev¹, S.V. Zavarzin¹

DEVELOPMENT OF MULTIFUNCTIONAL LUBRICANT FOR THREADED CONNECTIONS

Lubricants are an important element that ensures the uninterrupted operation of moving and mating parts of the gas turbine engine. Special requirements are imposed on lubricants used in threaded joints of the gas turbine engine. The work describes the experience of selecting the compositions of high-temperature multifunctional lubricants, designed to work at a temperature of 550 °C and higher. The results of testing the effects of lubricants on the resistance of heat-resistant alloys to high-temperature gas corrosion and their tendency to corrosion cracking are given.

Keywords: lubricants, high temperature lubricant, antiseize compound, seizing, galling, threaded joint

Reference List

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6. Kulagina G.S., Zhelezina G.F., Kan A.Ch., Kurshev E.V. Exploitation properties of antifriction selflubricating organoplastic based on fabric made of polytetrafluoroethylene and Аrcelon fibers. Trudy VIAM, 2023, no. 11 (129), paper no. 04. Available at: http://www.viam-works.ru (accessed: September 11, 2023). DOI: 10.18577/2307-6046-2023-0-11-37-46.
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Full version

11.

DOI: 10.18577/2713-0193-2024-0-3-134-143

UDC: 620.179.1

D.S. Skorobogatko¹, A.N. Golovkov¹, I.I. Kudinov¹, S.I. Kulichkova¹

SPECTRAL-LUMINESCENT CHARACTERISTICS, PHOTOSTABILITY AND THERMAL STABILITY OF MODERN FLUORESCENT PENETRANTS USED IN FLUORESCENT PENETRANT TESTING

The photostability in the ultraviolet radiation of the long-wavelength range (365 nm) and the thermal stability of luminescent penetrants under heating up to 100 °C, which are most often used in capillary luminescent control of parts in the aviation industry, have been evaluated. The factors influencing the stability of the spectral-luminescent properties of luminescent penetrants are identified. Spectral-luminescent characteristics before and after the processes of photo- and thermal degradation of penetrants are given. A qualitative comparison of the ongoing degradation processes of fluorescent penetrants has been carried out.

Keywords: non-destructive testing, fluorescent penetrant testing, fluorescent penetrant, fluorescence spectrum of penetrants, photodestruction and thermal destruction of fluorescent penetrants

Reference List

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2. Kablov E.N. Modern materials are the basis of innovative modernization of Russia. Metally Evrazii, 2012, no. 3, pp. 10–15.
3. Kablov E.N. Russia in the market of intellectual resources. Ekspert, 2015, no. 28 (951), pp. 48–51.
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Full version

12.

DOI: 10.18577/2713-0193-2024-0-3-144-154

UDC: 54.06; 543.573

D.V. Seleznev¹, I.G. Tolmacheva¹, M.S. Kolchina¹, E.I. Chapurova¹, V.V. Tashlanov¹

DETERMINATION OF KINETIC PARAMETERS OF THERMAL DESTRUCTION OF COMPOSITE PHASE-CHANGE MATERIALS WITH A POLYMER MATRIX

The thermal destruction of the composite phase-change material TAM-IGI-2 was studied using the method of thermogravimetric analysis at various heating rates under conditions of inert and oxidizing environments. It was established that thermal destruction proceeds in two distinct stages. Kinetic parameters (activation energy, pre-exponential factor) were calculated using model-free Kissinger–Akahira–Sunose and model-fitting Coats–Redfern calculation methods. The most probable model of the thermal destruction reaction at each stage was also determined. The presence of a compensation effect was revealed.

Keywords: kinetic parameters, composite phase-change material, thermogravimetric analysis, thermal destruction

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Full version

Aviation materials and technologies

Scientific-technical journal ISSN 2713-0193

ARCHIVE

Aviation materials and technologies №3, 2024

Contents

Heat-resistant alloys and steels

Light-metal alloys

Polymer materials

Composite materials

Protective and functional coatings

Material tests

FEATURES OF CHANGING THE GRAIN STRUCTURE IN Fe–Ni–Co–Mo–TiMARAGING STEEL UNDER DIFFERENT HEAT TREATMENT MODES

TABLETED MODIFIERS FOR CAST ALUMINUM ALLOYS

MAGNESIUM ALLOYS IN THE DESIGN OF NAVIGATION SYSTEM PRODUCTS

COMPARATIVE ANALYSIS OF THE CHARACTERISTICS OF DOMESTIC ALLOYS VT8, VT8M, VT8M-1, VT9 AND Ti6242S ALLOY (USA) AS APPLIED TO HIGH-PRESSURE COMPRESSOR BLADES OF AIRCRAFT GAS TURBINE ENGINES

DEVELOPMENT AND RESEARCH OF THE PROPERTIES OF COMPOSITE MATERIALS BASED ON THERMOPLASTIC HYBRID POLYMER MATRIX

PROMISING MATERIALS: OVERVIEW OF WORKS IN THE FIELD OF ULTRAHIGH MOLECULAR WEIGHT POLYETHYLENE. Part 1

INFLUENCE OF COMPOSITION AND STRUCTURE ON THE FIRE RESISTANCE OF ARAMID ORGANOPLASTICS

3D PRINTING OF COMPOSITES REINFORCED WITH CONTINUOUS FIBER OR FIBRILS (review)

MODERNIZATION OF THE LOW-AMPLITUDE FRICTION DAMPER WITH VACUUM ION-PLASMA COATING OF FRICTION WORKING SURFACES

DEVELOPMENT OF MULTIFUNCTIONAL LUBRICANT FOR THREADED CONNECTIONS

SPECTRAL-LUMINESCENT CHARACTERISTICS, PHOTOSTABILITY AND THERMAL STABILITY OF MODERN FLUORESCENT PENETRANTS USED IN FLUORESCENT PENETRANT TESTING

DETERMINATION OF KINETIC PARAMETERS OF THERMAL DESTRUCTION OF COMPOSITE PHASE-CHANGE MATERIALS WITH A POLYMER MATRIX