Archive - Электронный научный журнал "ТРУДЫ ВИАМ"

Articles

 


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1.
dx.doi.org/ 10.18577/2307-6046-2018-0-10-3-9
УДК 621.785.01
Voznesenskaya N.M., Tonysheva О.А., Leonov A.V., Dulnev K.V.
Hydrogen influence on high-strength corrosion-resistant steel VNS65-Sh properties and ways of elimination of hydrogen embrittlement

High strength corrosion-resistant steel VNS65-Sh is the transitional class steel. This steel is used for manufacturing of the high-loaded power details and nodes for aviation engineering. The results of diffusion mobility hydrogen (DMH) influence on steel plasticity characteristics are shown in this article. The negative influence of surface cold working on removal of DMH during heat treatment is shown. The different modes of heat treatment providing the minimum content of DMH in samples and recovery of steel plasticity of are investigated. Positive influence of heat treatment in vacuum furnace on recovery of steel plasticity is shown.

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2.
dx.doi.org/ 10.18577/2307-6046-2018-0-10-10-16
УДК 669.018.29
Ospennikova O.G., Lukin V.I., Afanasev-Khodykin A.N., Galushka I.A.
The manufacture of the «blisk» rotor design made from bimetallic combination of materials (review)

Considered the perspective of a GTE rotor design that called «blisk», which allows to reduce the weight and increase the efficiency of the engine. Shown the advantages and disadvantages between a «blisk» rotor design and a traditional «fir tree» rotor design. The review of technologies that can be used to manufacture a bimetallic «blisk» design from nickel based superalloys – foundry intermetallide blades and a deformable disk was made. The full scale tests of a gas turbine engine rotor, manufactured with a high temperature diffusive brazing technology were shown.

 

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3.
dx.doi.org/ 10.18577/2307-6046-2018-0-10-17-26
УДК 669.715
Antipov V.V., Serebrennikova N.Yu., Nefedova Yu.N., Kozlova O.Yu., Panteleev M.D., Osipov N.N., Klychеv A.V.
Manufacturing capability of Al–Li 1441 alloy details

Machinability by means of tool forming of sheet details of Al–Li 1441 alloy is described. Possibility of fabrication operations using resistance spot welding in assembly operations of details made of Al–Li 1441 alloy sheets is shown. The results of phase content and microstructure investigations by means of TEM and visible-light microscopy are shown. Processes of 1441 sheets and plates details forming and hybrid material made of 1441 sheets and fiberglass by means of autoclave molding.

 

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4.
dx.doi.org/ 10.18577/2307-6046-2018-0-10-27-36
УДК 669.018.292:669.715
Nechaykina T.A., Blinovа N.E., Ivanov A.L., Kozlova O.Yu., Kozhekin A.E.
Research of the effect of homogenization and quench hardening modes on the structure and mechanical properties of retail rings from alloy V95o.ch.-T2

The research of manufacturing parameters influence on the structure and properties of the roll rings (R≤1500 mm) made of the high-strength alloy В95o.ch.-T2 (7475 Т7351-type) was conducted. For this purpose parameters of heat treatment were varied: the soak time during homogenization (24 and 36 hours), the soak time during quench heating (150 and 200 min) and the temperature of the hardening fluid (30 and 60°С). The optimal heat treatment conditions (homogenization and quenching hardening) were determined to provide the required level of properties (σв≥470 MPa, σ0,2≥380 MPa, δ≥6%).

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5.
dx.doi.org/ 10.18577/2307-6046-2018-0-10-37-44
УДК 621.74.045
Ospennikova O.G., Pikulina L.V., Orlova V.Yu.
Model compositions on the basis of synthetic materials. Peculiarity of physical and mechanical and technological properties

Reception of cast details with high geometrical accuracy a moulding method on melted models in mainly depends on quality of model compositions and their components as casting completely repeats model configuration. On the basis of the conducted research were developed and formulated requirements to model composition, the manufacturing technology is fulfilled, the method of quality control is developed and also the method of adjustment of technological modes of manufacturing models of parts of different nomenclature on a fluidity indicator of melt and viscosity of model compositions is proposed.

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6.
dx.doi.org/ 10.18577/2307-6046-2018-0-10-45-52
УДК 629.3.023.26
Sentiourin E.G., Mekalina I.V., Aizatulina M.K., Orlova I.V.
Polishing and grinding – effective methods to improve the «silver resistance» and optical characteristics of plexiglas in the manufacture and extension of aviation glazing in operation (review)

Oriented acrylate organic glass is currently the main glazing materials of most domestic aircraft and helicopters, occupying from 90 to 100% of the total glazing area. Physico-mechanical and optical characteristics of oriented рlexiglas provide high reliability and service life of aviation glazing up to 10 years and more. However the need for continuous improvement and complication of operating conditions of aircraft require glazing to increase the life of the airframe (more than 20–30 years). The solution to this problem is achieved by the introduction of technologies for grinding and polishing of organic glasses in the process of their manufacture, processing, operation and repair to remove surface defects of varying complexity with the help of polishing and grinding pastes developed and manufactured by FSUE «VIAM».

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7.
dx.doi.org/ 10.18577/2307-6046-2018-0-10-53-61
УДК 66.017
Pripisnov Ya.A., Grishina O.I.
Modern methods of mechanical processing of composite materials (review)

A review of the main machining methods currently used for composite materials is given, their machinability is considered, the advantages and disadvantages of various processing methods are indicated. The analysis of blade machining, including features of wear and various options for coating the cutting tool. Two methods of ultrasonic processing are also described, the possibilities of laser processing are displayed, and the essence of water-jet cutting of materials is explained. In conclusion, the conclusion is made about the prospects of mechanical processing of composite materials.

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8.
dx.doi.org/ 10.18577/2307-6046-2018-0-10-62-73
УДК 629.7.023
Aleksandrov D.A., Muboyadzhyan S.A., Juravleva P.L., Gorlov D.S.
Investigation of the effect of surface preparation and ion-assisted deposition on the structure and properties of erosion-resistant ion-plasma coating

In this article, we investigated the influence of methods for preparing the sample surface before coating on the resistance to erosive wear of an ion-plasma coating of zirconium nitride. The effect on the structure of the zirconium nitride and erosion resistance of the compositions of «alloy–coating» assisted deposition, as well as the direction of rotation of the cathode spots of the vacuum arc along the annular trajectory on the surface of the cylindrical cathode is shown compared to the direction of rotation of the processed products on the planetary drive of the MAP-3 for ion-plasma coatings. The phase composition of the coatings were studied, the lattice periods and the size of coherent scattering regions, the magnitude of residual stresses were determined, and the erosion-wear resistance of «alloy–coating» compositions was tested. The influence of the studied process parameters on the erosion resistance of the ion-plasma coating of zirconium nitride has been established.

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9.
dx.doi.org/ 10.18577/2307-6046-2018-0-10-74-82
УДК 620.1:678
Gladkikh A.V., Kurs I.S., Kurs M.G.
Analysis of the data of full-scale climatic tests combined with the application of operational factors of nonmetallic materials (review)

Aging of polymer composite materials is a multifactorial process, therefore it is necessary to study not only the influence of individual aggressive factors, but also to take into account their synergistic effect on changes in the performance characteristics of the material. The most important impact factors include: moisture saturation, elevated temperatures, thermal cycling, and mechanical loads. The paper discusses the combined effect of mechanical loads and clima-tic factors on changes in the properties of polymer composite materials for aviation purposes.

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10.
dx.doi.org/ 10.18577/2307-6046-2018-0-10-83-92
УДК 620.179.1:621.792.05
Murashov V.V., Yakovleva S.I.
Non-destructive testing of the air screw blade's filler and permanent connections made from polymer composite material

Influence of defects like violation of continuity of the foam filler of the composite blade on spectral characteristics of elastic oscillations of surface of object of the control, raised by shock impulses is investigated at control, and influence of defects in zones of connection of heating pad with the composite blade on spectral characteristics of elastic oscillations of surface of the pad, raised at control. It is shown that in zones of availability of cracks in foam plastic and in zones of violation of connection of heating pad with the composite blade the range of the accepted oscillations that is sign of availability of defect significantly changes and allows revealing with high reliability defects.

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11.
dx.doi.org/ 10.18577/2307-6046-2018-0-10-93-106
УДК 624.046.3
Oreshko E.I., Erasov V.S., Lashov O.A., Podzhivotov N.Y., Kachan D.V.
Calculation of tension in a layered material

Calculations in the final element program ANSYS complex showed that tension which arise in layered samples at loading do not depend on quantity of layers if the total thickness of materials with different values of the module of elasticity does not change. The model is developed for calculation of tension in each layer of a layered plate. The schedule of dependence of settlement factor for calculation of tension in a layered sample from the relation of modules of elasticity of its materials in case of equal thickness of layers with different values of the module of elasticity is constructed. The system of the equations, allowing to define tension in plate layers with different values of the module of elasticity is offered.

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12.
dx.doi.org/ 10.18577/2307-6046-2018-0-10-107-116
УДК 620.1
Barbotko S.L., Volnyj O.S., Shurkova E.N.
Creation of the phenomenological model describing change of the characteristic of combustibility (duration of residual burning) depending on thickness of polymeric material

At performance of qualification of materials are, as a rule, limited to carrying out tests of 1–3 thickness which get out enough randomly and do not guarantee obtaining the complete information about fire-dangerous characteristics. Therefore the problem of establishment of pattern of change of characteristics of fire danger depending on thickness of sample and creation of the mathematical model describing this pattern is the actual.

In this work the analysis of change of duration of independent residual burning depending on thickness of sample is carried out and the phenomenological model is constructed.

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