Articles

 


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1.
dx.doi.org/ 10.18577/2307-6046-2017-0-6-1-1
УДК 669.018.28:669.721.5
Uridiya Z.P., Mukhina I.Y.
Regularities interaction of the alloying elements and nanostructured condition formation of casting magnesium alloys Mg–Zn–Zr system

The given article presents the results of the potentially productive magnesium casting alloy elaboration for the new-generation aerospace engineering. On the basis of the analysis of the general regularities of interaction of the alloying elements with magnesium are chosen components of the alloy, which form the nanostructured state and increase strength ratio. There are compositions of alloys offered and investigated. By results of differential scanning calorimetry (DSC) are corrected the homogenization modes and aging of the studied compositions. There is Influence of the quantitative content of the alloying elements: Zn, Cd, Nb, Ti, Bi, In, REE on the mechanical and corrosion characteristic of the studied alloy compositions examined. There is Influence of the chemical composition and structural alloy components on mechanical properties and magnesium ligature Mg–Zn–Zr corrosion resistance established.

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2.
dx.doi.org/ 10.18577/2307-6046-2017-0-6-2-2
УДК 621.98.043
Bakradze M.M., Lomberg B.S., Sidorov S.A., Bubnov M.V.
Method of large-sized deformed turbine discs manufacturing from EK151-ID industrial ingots with limited diameter (320 mm)

The article presents results of large-sized deformed turbine discs from nickel-based superalloy EK151-ID manufacturing technology development. The developed process provides the manufacturing possibility of large-sized forged discs from nickel-based superalloy with regulated structure and properties using industrial ingots with limited diameter (320 mm). Metal forming simulation engineering software QForm-3D was used in this work.

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3.
dx.doi.org/ 10.18577/2307-6046-2017-0-6-3-3
УДК 001.891.573:669.295
Artemenko N.I., Simonov V.N.
Mathematical modeling of the titanium deposition process at the MAP-3 ion-plasma deposition unit

A mathematical model of the deposition of a coating from a two-component ion-droplet plasma of a vacuum-arc discharge from an alloy VT1-0 (titanium) is considered. It is established that the temperature of the substrate during coating depends on arc current and bias voltage. A relation is obtained from which it follows that the relative amount of the microdroplet phase in the ion-plasma coating is insignificant, but monotonically increases with increasing arc current. It is established that the specific change in the mass of the sample during coating depends on the arc current, voltage and time of the process. Formulas are proposed for calculating the substrate temperature and the specific change in the sample mass for ion-plasma coating deposition from the VT1-0 alloy. The obtained results can be used in the development and planning of the coating process on the MAP-3 ion-plasma installation, as well as predicting some properties of the obtained ion-plasma condensed coatings. Work is

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4.
dx.doi.org/ 10.18577/2307-6046-2017-0-6-4-4
УДК 629.7.023.224
Kashin D.S., Stekhov P.A.
Development of combined heat-resistant coatings for parts made of natural-composite material based on niobium

Researches of isothermal heat resistance of samples from natural-composite material are based on niobium for GTE parts with heat-resistant coatings at a temperature of 1350°C on the basis of tests of 30 hours. Tests on the cyclic heat resistance of samples with a combined coating at a temperature of 500⇄1300°C with air cooling up to 500°C have been carried out. Investigations of the microstructures of the coatings in their original form and after tests on the heat resistance of samples from a naturally-composite material based on niobium with complex coatings were carried out. The coating of the Si+(Fe–Cr–Al–Y)+Si system has a higher crack resistance than the diffusion heat-resistant coating. Combined heat-resistant coating provides protection of parts from natural-composite material based on niobium at operating temperatures up to 1350°C, and preserves protective properties under thermal cycling conditions.

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5.
dx.doi.org/ 10.18577/2307-6046-2017-0-6-5-5
УДК 678.8
Mishkin S.I., Raskutin A.E., Evdokimov A.A., Gulyaev I.N.
Technologies and the main stages of construction of the arch bridge first in Russia from composite materials

Article is devoted to consideration of technologies which have been applied at construction of the fast-erected arch automobile bridge first in Russia from composite materials, and also the main stages of its construction. The bridge constructed on this technology in the regional settlement of Yazykovo of the Ulyanovsk region, has the span length of 11,98 meters, maintains loading to 100 tons, long time does not require capital investments and is constantly supervised by monitoring system using fiber optic sensors of deformation and temperature.

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6.
dx.doi.org/ 10.18577/2307-6046-2017-0-6-6-6
УДК 678.747.2
Gusev Y.A., Tverdaya O.N., Gromova A.A.
Carbon plastic on the basis of binding curing with low temperature and carbon equally strong of the fabric

This article presents development, carried out by FSUE «VIAM», of new generation of polymer composite material based on melted low temperature epoxy resin and domestic developed carbon fabric. Comparative elastic and strength characteristics of the cured composite and carbon fabric characteristics are submitted. The received results show that the developed composite doesn't concede on is elastic to strength properties of the import and domestic analogs.

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7.
dx.doi.org/ 10.18577/2307-6046-2017-0-6-7-7
УДК 678.8:629.331
Timoshkov P.N., Khrulkov A.V., Yazvenko L.N.
Composite materials in automotive industry (review)

The use of composite materials is increasingly on a large scale. In the automotive industry composite materials has been used for many years, and every year the level of usage is increasing. If previously, PCM was mainly used as interior trim in the parts not bearing a significant load, but now the polymers were used in large-size details, and foreign companies such as BMW, Ford, Mercedes, Audi and it made the car body which consists entirely of composites.

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8.
dx.doi.org/ 10.18577/2307-6046-2017-0-6-8-8
УДК 678.6
Beljaev А.А., Bespalova E.E.
Choice of technological modes of drying fibrous foam materials

Development of technical progress in aerospace, transport, power and other industries is inseparably linked with creation of new and improvement traditional materials [1–4]. Broad application of radio engineering and electrotechnical means defines need for development of radio absorbing materials (RAM) with the set technical characteristics. In this article results of working off of technological modes of drying fibrous foam materials, broadband radio absorbing materials applied to manufacturing are provided. Influence of modes of heat treatment for receiving stable and uniform fibrous materials is shown. Work is executed within implementation of the complex scientific direction 15.3. «Materials and coverings for protection against EMR, shock, vibrating, acoustic and electric influences» («The strategic directions of development of materials and technologies of their processing for the period till 2030»)

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9.
dx.doi.org/ 10.18577/2307-6046-2017-0-6-9-9
УДК 66.017
Kondrashov S.V., Shashkeev K.A., Popkov O.V.
A method for calculating effective electromagnetic parameters of a periodic medium

This paper describes a method for computing effective electrodynamic parameters (susceptibility tensors) of a partially disordered periodic medium with a rectangular cell; the cell must be considerably smaller that the electromagnetic wave length in the medium. The computational complexity of the suggested iterative algorithm is O(NxNyNzlnNxlnNylnNz) per iteration, and the required memory size is Θ(NxNyNz), where Nx, Ny and Nz stand for the grid size in the respective directions. The algorithm can be extended so that it will also support periodic media with non-rectangular cells, which only requires a few additional linear transforms.

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10.
dx.doi.org/ 10.18577/2307-6046-2017-0-6-10-10
УДК 669.017:669.715
Grigorenko V.B., Morozova L.V.
Influence of conditions and use duration on degradation of structure of aluminum alloys of the type AMg4,5 and AMn

Complex research of products from AMg4,5 aluminum alloys and AMn after long-term operation for the purpose of identification of signs of degradation of material is conducted. Mechanical tests for assessment of strength properties of base material and welded seams, are carried out by methods of non-destructive testing, optical and scanning microscopy the material structure is investigated, the fractographic analysis of the destroyed samples is carried out. It is established that degradation signs at observance of operating conditions do not come to light.

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11.
dx.doi.org/ 10.18577/2307-6046-2017-0-6-11-11
УДК 677.017
Nesterova T.A., Nazarov I.A., Barbotko S.L., Volnyj O.S., Platonov M.M.
Research of influence of operational and climatic factors on properties of material for ballonet pneumatic ladder for emergency evacuation of cabin of the helicopter

The complex of properties of the fabric film material consisting of polyester fabric (art. 208) with the double-sided polyurethane covering on the basis of SKU-8TB rubber with functional additives, intended for manufacturing ballonet pneumatic ladder for emergency evacuation of cabin of the helicopter is investigated. Results of research of properties of this material in initial condition and after the operational and climatic factors carried out after influence (elevated temperature, humidity, mold fungi, influence of humid tropical climate, etc.) have shown that properties change slightly from reference values that confirms its working capacity at temperatures from -60 to +80°С.

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12.
dx.doi.org/ 10.18577/2307-6046-2017-0-6-12-12
УДК 667.6:620.193
Rakova T.M., Kozlova A.A., Nefyodov N.I., Laptev A.B.
The study of influence organic and inorganic corrosion inhibitors on the stress-corrosion cracking high-strength steels

It was conducted studies of organic and inorganic corrosion inhibitors, their combined effect on the development of cracks on high-strength steels and in aqueous media when introduced into the paint coating. It was found that among the inorganic salts and oxides of the most effective in protecting from high-strength steels are brittle chromates provide the longest time to failure of samples and the best protection against general corrosion of steel. Studies have shown that the greatest protective effect is a mixture of inorganic and organic corrosion inhibitors provide a synergistic effect.

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