Last number - Электронный научный журнал "ТРУДЫ ВИАМ"

Last number

 
№10  2024

1.
dx.doi.org/ 10.18577/2307-6046-2024-0-10-3-12
УДК 669.14:669.15-194.55
Sevalnev G.S., Nefedkin D.Yu., Dulnev K.V., Skorikova M.A.
STUDY OF THE CHARACTERISTICS OF MARAGING STEEL UNDER TRIBOTECHNICAL LOADING

Metallographic and durometric studies and wear tests under dry sliding friction conditions of maraging steel 21NKMT after various types of heat treatment were carried out. It has been established that the samples after quenching and single aging have the lowest wear rate, while the samples after two-times aging have the highest hardness of 630 HV. The use of two-fold aging and overaging of 21NKMT steel leads to an increase in wear intensity by 12–33%.

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2.
dx.doi.org/ 10.18577/2307-6046-2024-0-10-13-23
УДК 669.018.44:669.245
Min P.G., Vadeev V.E., Kolesnikov S.I., Chemov D.A.
THE EFFECT OF IMPURITIES ON MECHANICAL AND OPERATIONAL PROPERTIES OF THE CAST NICKEL-BASE SUPERALLOY VZhM200

The results of the study of the effect of sulfur, phosphorus, silicon and nitrogen impurities on the main properties of the high-temperature nickel alloy VZhM200 for blades casting with a directional structure of the PD-8 gas turbine engine: long-term, fatigue strength and short-term mechanical properties are presented. It was found that with an increased content of these impurities in the alloy, the time to destruction decreases at T = 1000 °C at bases of 100, 500 h and plasticity at T = 20 °C. It was also found that the number of cycles to failure was reduced when tested for high-cycle fatigue at T = 900 °C in the alloy with the addition of silicon and nitrogen.

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3.
dx.doi.org/ 10.18577/2307-6046-2024-0-10-24-33
УДК 621.7.011
Shpagin A.S., Bazhenov A.R., Antipov K.V., Oglodkova Yu.S.
CONSTRUCTION OF A RHEOLOGICAL MODEL OF DEFORMABLE ALUMINUM ALLOY 1163 FOR COMPUTER SIMULATION OF METAL PRESSURE PROCESSES

The paper describes the process of creating a rheological model of aluminum alloy 1163, intended for use in software packages for modeling metal forming processes. The flow stress curves of the alloy depending on the temperature and strain rate were obtained experimentally. Using the empirical Hensel-Spittel model, the coefficients determining the dependence of the flow stress on the thermomechanical parameters were calculated. The resulting model ensures high convergence of the calculated and experimental data.

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4.
dx.doi.org/ 10.18577/2307-6046-2024-0-10-34-44
УДК 669.018.44:669.295
Kashapov O.S., Ryzhkov P.V., Chuchman O.V., Naprienko S.A.
INVESTIGATION OF THE FATIGUE STRENGTH OF VT41 TITANIUM ALLOY SHEET MATERIAL AT ROOM TEMPERATURE UNDER UNIAXIAL STRETCHING CONDITIONS IN THE LOW- AND HIGH-CYCLE REGION

The article presents and summarizes the test results of the mechanical properties of material of industrial sheets with a thickness of 2,0 mm made of heat-resistant titanium alloy VT41. The results of tensile tests, low- and high-cycle fatigue tests of flat samples are presented as well as the results of tensile testing of samples with a corset shape of the working part at different loading speeds. On the base of tests results a stress-cycles to failure curve is  constructed in the areas of static, re-static, low-cycle and classical high-cycle destruction.

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5.
dx.doi.org/ 10.18577/2307-6046-2024-0-10-45-62
УДК 678.8
Gurov D.A., Tsapenko A.N., Pavlukovich N.G.
EFFECT OF MUTUAL STRENGTHENING IN POLYMER COMPOSITES BASED ON POLYETHEREKETONE AND THERMOTROPIC LIQUID CRYSTAL POLYMERS OBTAINED BY 3D-PRINTING

The dependences of the mechanical and thermophysical characteristics in samples with different ratios of polyetheretherketone (PEEK) and liquid crystalline polymers (LCP), synthesized by layer-by-layer filament deposition, are shown. It has been shown for certain concentrations, adding LCP to PEEK can increase the mechanical characteristics compared to the material synthesized by FDM from unfilled PEEK. The presence of fibrils and coaxial shells between the layers of 3D-synthesized organic composite plastic and inside the threads themselves is shown. A relationship has been proposed between the microstructure of samples synthesized by FDM and their mechanical properties.

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6.
dx.doi.org/ 10.18577/2307-6046-2024-0-10-63-73
УДК 629.7.023.22
Kolpachkov E.D., Vavilova M.I., Serkova E.A., Dolgov E.Yu., Antipov V.V.
NEW GENERATION PCM BASED ON GLASS FILLERS FOR THE MANUFACTURING OF INTERIOR ELEMENTS OF HELICOPTER EQUIPMENT

The results of the development and research of fiberglass for structural purposes for the manufacture of interior design elements of helicopters  are presented. A comparative analysis was carried out with previously developed and used materials, including a foreign analogue. It is shown that the developed materials meet modern requirements for fire safety, and due to the use of an epoxy melt binder they provide increased manufacturability and achieve a high level of elastic and strength characteristics. The possibility of improving the developed material to meet the requirements in terms of fire safety imposed on the interior materials of aircraft of the transport category is shown.

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7.
dx.doi.org/ 10.18577/2307-6046-2024-0-10-74-83
УДК 669.81
Antipov V.V., Venediktova M.A., Pushnitsa А.S., Kotelnikova D.D., Popov А.V.
INVESTIGATION OF THE POSSIBILITY OF INCREASING THE TEMPERATURE RANGE OF FIRE RETARDANT MATERIALS

The article describes the results of research (physical, fire and thermophysical) properties of the flame retardant material based on fluorosiloxane rubber with different systems of functional additives. The work is aimed at extending the temperature range (up to 200 °С) of fire retardant materials operation, in environments that allow contact with fuel. Research confirms the efficiency of phosphate-nitrogen intumescent system, due to the formation of a durable protective carbon backbone under the influence of high temperatures, preventing the spread of fire.

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8.
dx.doi.org/ 10.18577/2307-6046-2024-0-10-84-93
УДК 539.612
Marchenko S.A., Skivko P.V.
EFFECT OF TEMPERATURE ON DRYING TIME AND VIABILITY OF EPOXYVINYL ETHER RESIN PUTTY

The influence of ambient temperature and humidity on the curing rate of putty based on unsaturated polyester resin (epoxy vinyl ether) was studied: the viability of the putty after mixing with a hardener and accelerator, the drying time to degree 3 of the putty coating was investigated. The physical and mechanical properties of the putty coating during curing under various temperature and humidity conditions have been determined. The optimal temperature and humidity (when working in open areas) were determined during the curing of coatings based on epoxy vinyl ether putty.

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9.
dx.doi.org/ 10.18577/2307-6046-2024-0-10-94-108
УДК 620.1:678.8
Startsev O.V., Koval T.V., Krotov A.S., Dvirnaya E.V., Veligodsky I.M.
INVESTIGATION OF THE PROPERTIES OF CARBON FIBER REINFORCED PLASTIC WITH COATINGS AFTER 8 AND 13 YEARS OF WEATHERING IN MODERATELY WARM CLIMATE Part 1. Moisture content and diffusion coefficients

Carbon fiber reinforced plastic (CFRP) KMKU-2m.120, protected by fluoroepoxide VE-46 and acrylic AC-1115 coatings, was exposed to natural weathering conditions in the moderately warm climate of Gelendzhik for 8 and 13 years of exposure. The moisture transfer kinetics in aged CFRP is studied. Fick and Langmuir one-dimensional and three-dimensional models were used to fit the experimental data:  the relative change in the mass of samples of different shapes and sizes. The influence of the coating type and color, duration of natural weathering on moisture content and moisture diffusion coefficients (in-plane and transverse directions) was studied.

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10.
CONTENТS

Heat-resistant alloys and steels

 

Sevalnev G.S., Nefedkin D.Yu., Dulnev K.V., Skorikova M.A. Study of the characteristics of maraging steel under tribotechnical loading

 

 

Min P.G., Vadeev V.E., Kolesnikov S.I., Chemov D.A. The effect of impurities on mechanical and operational properties of the cast nickel-base superalloy VZhM200

 

Light-metal alloys

 

Shpagin A.S., Bazhenov A.R., Antipov K.V., Oglodkova Yu.S. Construction of a rheological model of deformable aluminum alloy 1163 for computer simulation of metal pressure processes

 

 

Kashapov O.S., Ryzhkov P.V., Chuchman O.V., Naprienko S.A. Investigation of the fatigue strength of VT41 titanium alloy sheet material at room temperature under uniaxial stretching conditions in the low- and high-cycle region

 

 

Polymer materials

 

Gurov D.A., Tsapenko A.N., Pavlukovich N.G. Effect of mutual strengthening in polymer composites based on polyethereketone and thermotropic liquid crystal polymers obtained by 3D-printing

 

 

Composite materials

 

Kolpachkov E.D., Vavilova M.I., Serkova E.A., Dolgov E.Yu., Antipov V.V. New generation PCM based on glass fillers for the manufacturing of interior elements of helicopter equipment

Protective and functional

coatings

 

Antipov V.V., Venediktova М.А., Pushnitsa А.S., Kotelnikova D.D., Popov А.V. Investigation of the possibility of increasing the temperature range of fire retardant materials

 

 

Marchenko S.A., Skivko P.V. Effect of temperature on drying time and viability of epoxyvinyl ether resin putty

 

 

Material tests

 

Startsev O.V., Koval T.V., Krotov A.S., Dvirnaya E.V., Veligodsky I.M. Investigation of the properties of carbon fiber reinforced plastic with coatings after 8 and 13 years of weathering in moderately warm climate. Part 1. Moisture content and diffusion coefficients

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