Archive - Электронный научный журнал "ТРУДЫ ВИАМ"

Articles

 


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1.
dx.doi.org/ 10.18577/2307-6046-2020-0-3-3-12
УДК 621.745.3
Kablov E.N., Echin A.B., Bondarenko Yu.A.
History of development of directional crystallization technology and equipment for casting blades of gas turbine engines

The paper summarizes the history of the development of technology of directional crystallization and melting and pouring equipment for the production of blades of gas turbine engines from heat-resistant alloys with directional and single-crystal structure in Russia and abroad. It is shown how the conditions of directed crystallization affect the structure of Nickel heat-resistant alloys. The characteristics of industrial plants developed in FSUE «VIAM» with a computer system for controlling the parameters of the technological process, as well as the ways of their further development are given.

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2.
dx.doi.org/ 10.18577/2307-6046-2020-0-3-13-29
УДК 669.017.165:669.018.44
Petrushin N.V., Elyutin E.S., Chabina E.B.
Phase and structural transformations in directionally solidified with plant front intermetallic eutectic Ni-based alloys

Ingots of samples of eutectic intermetallic nickel-base alloys γʹ+β, β+δ(Re), γʹ+NbC and γ/γʹ+NbC with natural composite structure respectively of the systems Ni–Al–W, Ni–Al–Re, Ni–Al–Nb–C and Ni–Al–Cr–Co–W–Mo–Nb–C are produced by the method of directional solidification with a plan front. Investigation are produced characteristics of the eutectic composites microstructure and phase composition, segregation of alloying elements along the composite zone of ingot, solidus temperature, liquidus temperature, volume fraction fibers δ(Re) and NbC in eutectic composites. For samples eutectic composite system Ni–Al–Cr–Cr–W–Mo–Nb–C with heterophase matrix base γʹ phase reinforced fibers of NbC-carbide tensile tests were performed in the temperature interval 201200 °С and long-term strength in the temperature interval 9001200 °С at bases up to 1000 h.

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3.
dx.doi.org/ 10.18577/2307-6046-2020-0-3-30-40
УДК 669.017
Konokotin S.P., Iatsyuk I.V., Dobrynin D.A., Azarovskiy E.N.
Influence of yttrium on the quality of cast billets from alloys based on aluminum

The coating method developed by VIAM is based on high-energy vacuum-plasma technology, where cast tube cathodes made including aluminum alloys are used as the sprayed material. In order to identify gas pores in cast tube cathodes from an aluminum-based alloy containing from 3,0 to 5,0% yttrium, metallographic studies of samples taken from different parts of the castings subjected to crystallization at different speeds were carried out. Based on the studies, the causes of the formation of gas pores in the molded structure of the tube cathodes are identified and recommendations are given for improving the technology for their elimination.

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4.
dx.doi.org/ 10.18577/2307-6046-2020-0-3-41-48
УДК 678.072
Tkachuk A.I., Terekhov I.V., Afanaseva E.A.
Reactive type flame retardants for epoxy resins. Part 1

The first part of the paper considers the combustion mechanism of polymer materials and the widely used traditional and new promising halogenated and organophosphorus reactive type flame retardants for epoxy resins, which contribute to reducing the combustibility of polymer materials for various purposes without significantly reducing their heat resistance and mechanical properties are given. In particular, a wide range of compounds based on phosphates and derivatives of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide are described. The effects of these additives and their mechanism of action are shown.

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5.
dx.doi.org/ 10.18577/2307-6046-2020-0-3-49-57
УДК 678.8
Valueva M.I., Kolobkov A.S., Malakhovskiy S.S.
Ultra-high molecular weight polyethylene: market, properties, directions of application (review)

The article provides an overview of scientific and technical information in the field of ultra-high molecular weight polyethylene (UHMWPE), information on foreign and Russian manufacturers of UHMWPE, release forms, data on the assortment and properties of fibers and fabrics from UHMWPE of various manufacturers, an overview of applications, ongoing research and prospects development of work in this area. Including data is provided on the rapidly developing market of UHMWPE products manufactured by Chinese manufacturers, as well as on Russian developments in the field of UHMWPE.

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6.
dx.doi.org/ 10.18577/2307-6046-2020-0-3-58-65
УДК 666.7
Lebedeva Yu.E., Shchegoleva N.E., Chaynikova A.S., Voronov V.A., Shavnev A.A.
Obtaining the prototype of not cooled nozzle turbine blade from ceramic composite material

Not cooled nozzle turbine blade prototype from ceramic composite material of SiC-SiCw–B4C–AlN system was obtained by the method of spark plasma sintering. The received prototype combines low values of density (3,4 g/cm3) and CTE (α=(5,3–5,4)10-6 K-1) with high level of mechanical and thermal characteristics: microhardness (25–26 GPa), flexural strength (413 MPa), crack resistance (6,2–6,9 MPa√м) and heat resistance at 1500 °C (weight change is 0,72–0,77% during 600 h). The spark plasma sintering method has allowed to obtain uniform structure of not cooled nozzle turbine blade prototype from ceramic composite material.

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7.
dx.doi.org/ 10.18577/2307-6046-2020-0-3-66-73
УДК 678.747.2
Evdokimov A.A., Gulyaev I.N., Nacharkina A.V.
Investigation of the physicomechanical properties of volume-reinforced carbon fiber reinforced plastic

The physical and mechanical properties of carbon fiber made using a volume-reinforced preform of the orthogonal weave type and a binder VSN-31 at room and elevated (300 °C) temperatures are investigated. The presented research results are presented in comparison with carbon fiber, made on the basis of equal-strength fabric and binder VSN-31. The analysis of the obtained results of the compared carbon fiber plastics is carried out and conclusions are made about their performance at high temperature. The influence of the orientation of the base, weft, and vertical ligation bundles on the physical and mechanical characteristics of carbon fiber plastics is explained.

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8.
dx.doi.org/ 10.18577/2307-6046-2020-0-3-74-81
УДК 620.1:667.621
Veshkin E.A, Semenychev V.V., Postnov V.I., Krasheninnikova E.V.
Research of the geometric section for sclerometric furnish sections obtained on the cured binding EDT-69N at different load levels for inductor

EDT-69H binder samples cured under various temperature and time conditions were scratched using a laboratory sclerometer over a wide range of indenter loads. The obtained sclerometric grooves were measured andgraphs were plotted for changes in the width and depth of the grooves depending on the load on the samples of composites, cured at different conditions. The geometric shape of the cross-section of the grooves was studied on the transverse sections of plastic samples, the depth of the grooves on the microsections was specified and the microhardness values in the region of deformation of the material from the action of the indenter of the sclerometer were estimated. It has been established that the microhardness value and sclerometric characteristics are very sensitive parameters to the technological modes of curing the binder. The change in the roughness of the front surface of samples with different curing modes was studied and it was shown that an increase in the microhardness of the surface of the sample leads to a decrease in its roughness.

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9.
dx.doi.org/ 10.18577/2307-6046-2020-0-3-82-93
УДК 678.8
Donetskiy K.I., Bystrikova D.V., Karavaev R.Y., Timoshkov P.N.
Application of polymeric composite materials for creation of elements of transmissions of aviation engineering (review)

At aircraft manufacturing enterprises of the Russian Federation, currently, the heavily loaded parts of the transmissions of aircraft (LA) are mainly made from metal alloys. In foreign practice it has become common practice, the use of polymer composite materials (PCM) for such products is mainly based on glass or carbon fillers using autoclave molding, pressure impregnation, winding, etc. The use of PCM in the manufacture of highly loaded parts of aircraft transmissions allows reducing the weight of products compared to metal alloys while maintaining high mechanical properties and introducing automated processes for the production of plastics in production. The published article is devoted to the review of various technological methods for manufacturing elements of transmission shafts for aviation purposes from PCM.

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10.
dx.doi.org/ 10.18577/2307-6046-2020-0-3-94-101
УДК 629.7.023.222
Kondrashov E.K., Naidenov N.D.
Erosion-resistant paint and varnish coatings for aviation purposes Part 2. Elastomeric erosion resistant radio-transparent coatings (review)

This paper summarizes the results of research on the development of erosion-resistant coatings based on epoxy, polyurethane and polyimide film formers with heat resistance up to 350 °С. It is established that the erosion resistance of coatings depends not only on their strength and elongation, but also on their dynamic parameters and the properties of fillers. The second part of the article summarizes the results of research on the development of elastomeric erosion-resistant coatings based on chlorosulfated polyethylene and fluoro-rubber with heat resistance up to 250 °С, as well as coating systems with erosion-resistant enamels based on these elastomers designed to protect against erosion of radio-transparent antenna fairings made of fiberglass.

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11.
dx.doi.org/ 10.18577/2307-6046-2020-0-3-102-110
УДК 620.1:699.81
Barbotko S.L., Volnyj O.S., Bochenkov M.M.
Impact assessment of gas permeability of three-layered core panel on heat release

This is a study of the effect of the gas permeability of the skin and honeycomb core of three-layer panels on the value of the heat release characteristics during combustion (the maximum heat release rate and the total amount of heat released during the first 2 minutes of the test). The study demonstrates that the presence of perforations of the skin or honeycomb can lead to a significant decrease in the recorded heat release characteristics due to a smoother exit of combustible thermal decomposition products from the internal volume of the three-layer panel.

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12.
dx.doi.org/ 10.18577/2307-6046-2020-0-3-111-118
УДК 620.179:624.147
Makhsidov V.V., Smirnov O.I., Razomasov N.D., Razomasova T.S., Nuzhny G.A.
Structural health monitoring of natural and artificial structures based on ice (review)

Ice is a good base material for a number of structures in Arctic, especially for large structures (e.g. runway, road and etc.). However, sea or fresh ice as structural material have not enough strength. Therefor, reinforcing and modification and on the other hand development new methods and improve existents one monitoring ways for ice are still investigating. In this paper non-destructive testing for certain natural and artificial structures applying for Arctic condition are reviewed. Radar data, local methods such as based on stress-strain, ultrasonic and acoustic emission data for estimate work’s capacity structures are consider.

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