Articles

 


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1.
dx.doi.org/ 10.18577/2307-6046-2016-0-7-1-1
УДК 669:620.19
Grigorenko V.B., Morozova L.V., Zhegina I.P., Fomina M.A.
Features of accumulation of damages to aluminum-lithium alloys 1441 and V-1469 surface layers depending on corrosion environment and applied load

By means of high-resolution methods of research including electron, laser and optical microscopy, the kinetics of glide lines accumulation process and corrosion damages of samples from aluminum-lithium alloys 1441 and V-1469 is studied at carrying out fatigue tests on rigid cycle in the conditions of combined influence of the corrosion environment and applied stress. The quantitative assessment of deformation parameters (density of slip band, sizes of plastic zones under break, surface roughness in the allocated zones) and damage parameters (the sizes and the area of corrosion pittings) is executed. The work is executed within the frames of the complex scientific direction 8.1. «High-strength welded aluminum and aluminum - lithium alloys of the lowered density with the increased fracture toughness» («The strategic directions of development of materials and technologies of their processing for the period till 2030»)

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2.
dx.doi.org/ 10.18577/2307-6046-2016-0-7-2-2
УДК 669.715:621.79
Pavlovskaya T.G., Volkov I.A., Kozlov I.A., Naprienko S.A.
Ecologically improved technology of aluminum alloys surface treatment

Despite the increased interest of designers to composite polymer materials (PCM), aluminum alloys are still the basic constructional material of the aviation industry, therefore the questions of their corrosion protection, delivering special properties to their surface remain relevant. Modern ecological regulations of technological processes safety require to exclude application in toxic solutions for surface treatment such as hexavalent chromium. Technological solutions on preparation of aluminum alloys surface for pasting in the solutions which are not containing toxic compounds are provided in the work. The work is executed within the frames of the complex scientific direction 17.1. «Ecologically safe plasma electrolytic coatings for light alloys» («The strategic directions of development of materials and technologies of their processing for the period till 2030»)

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3.
dx.doi.org/ 10.18577/2307-6046-2016-0-7-3-3
УДК 669.018.95
Krasnov E.I., Shteinberg A.S., Shavnev A.A., Serpova V.M., Zhabin A.N.
Research of layered metal composite material of Ti–TiAl3 system

Research work on synthesis of layered metal composite material of the Ti–TiAl3 system by the method of vacuum reaction synthesis and the method of electrothermal explosion are conducted. The optimal temperature and time parameters of formation of intermetallic phase in the layered composite material are determined. The underlying conditions of gas emission and the possibility of outgassing treatment in the process of preparation to the intermetallides synthesis are considered. The work is performed within the framework of an integrated research direction 12.2. «Metal intermetallic and metal–ceramics systems layered metal matrix composites (MMC) for lightweight protection» («Strategic directions of development of materials and technologies to process them for the period up to 2030»)

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4.
dx.doi.org/ 10.18577/2307-6046-2016-0-7-4-4
УДК 669.14
Titov V.I., Goundobin N.V., Pilipenko L.V.
Determination of zirconium in ferrous alloys

This research paper provides with a methodology to develop methods for zirconium determination in high complex alloyed steels of aerospace purposes. It analyzes the subject through various literary sources. Summarizing the obtained data and through the performed work it is established that the determination of zirconium with a reagent Arsenazo III is possible if not more than 0,5% niobium and 1,0% tungsten are presented in the steels. Higher amounts of these elements lead to a distortion of obtained results in determining the content of zirconium. In this technique, the hydroxylamine should be used as a reducing agent for iron as the most effective one. It is found that the reagent xylenol orange is the most sensitive and selective in the zirconium photometric determination method in steels with high contents of niobium and tungsten. The process of zirconium alloy quantitative separation from main alloying elements using phenylarsonic acid has to be the previous operation to photome

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5.
dx.doi.org/ 10.18577/2307-6046-2016-0-7-5-5
УДК 629.7.023.2
Artemenko N.I., Simonov V.N.
Engineering method for predicting the value of the elastic modulus of single-layer ion-plasma fused coatings obtained by plasma chemical synthesis

The paper presents an engineering method for predicting the value of the modulus of elasticity in the condensed ion-plasma coatings obtained by plasma-chemical synthesis. The process of plasma-chemical synthesis of titanium nitride is considered, the basic characteristics of the process at a degree of binary compound conversion less than 1 is designated. It is found that the degree of conversion is equal to 1 in the excess of reaction gas in vacuum chamber of the ion-plasma unit. The method of measuring the elastic modulus of the material coating by bending the free end of the cantilever beam is developed and described. The elastic modulus of the coating material obtained by plasma synthesis with a deficiency of the reaction gas in chamber of the ion plasma unit is measured. It is found that the elastic modulus of the coating material is proportional to the degree of conversion. A formula is suggested for calculating the modulus of elasticity of the coating obtained by plasma synthesis

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6.
dx.doi.org/ 10.18577/2307-6046-2016-0-7-6-6
УДК 539.612
Semenychev V.V., Salakhova R.K.
Evaluation of nickel-cobalt coating adhesion to fiberglass and carbon fiber–reinforced plastic by scratching

A nickel coating was deposited on samples from structural composite materials such as fiberglass and carbon plastic in the galvanic bath by the electrodeposition method and then the surface was scratched by the hardness meter under various degree of loading. The morphology of the scratches channels is studied; their width and depth depending on the applied load are measured. The calculations of tensions heading to local destructions are conducted using Viver’s formula. It is established that nickel-cobalt coating has high strength of adhesion with both kinds of composite materials; no chippage or exfoliation is detected. Work is executed within the frames of the complex scientific direction 13.2. «Constructional PСM» («The strategic directions of development of materials and technologies of their processing for the period till 2030»)

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7.
dx.doi.org/ 10.18577/2307-6046-2016-0-7-7-7
УДК 667.621.262.2
Lukina N.F., Dement’eva L.A., Petrova A.P., Anikhovskaya L.I.
Gluing materials in the design of blades of helicopters

Application experience of highly elastic phenolic and rubber adhesives VK-3, VK-25, VK-50, liquid phenolic rubber adhesive VK-32-200B as glue intermediate layer and high-strength epoxy film adhesives VK-36P and VK-51 for blades manufacturing of main and tail helicopter propellers is shown. The main mechanical characteristics and purpose of adhesives are presented. Ways of development in the field of new adhesive materials application in helicopter equipment and technical efficiency in helicopters design are shown. The work is executed within implementation of the complex scientific direction 15.1. «Multifunction adhesive systems» («The strategic directions of development of materials and technologies of their processing for the period till 2030»)

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8.
dx.doi.org/ 10.18577/2307-6046-2016-0-7-8-8
УДК 678.686:539.25
Gulyaev A.I., Shurtakov S.V.
Quantitative analysis of fiber–matrix interface microstructure in carbon composites

In this article the results of microstructural research of carbon fiber/epoxy composites produced by autoclave moulding and by vacuum infusion processing are represented. Research works are carried out by means of scanning electron microscopy in combination with the computer image analysis. The method of quantitative representation of results of microstructural research of fiber–matrix interface in carbon fiber reinforced polymers is suggested. The volume fraction of microdisperse phase in boundary layer is defined and it is shown that this parameter not linearly depends on distance from the surface of the fiber. The work is executed within implementation of the complex scientific directions 2.1. «Fundamental oriented research», 2.2. «Qualification and research of materials» («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/ 10.18577/2307-6046-2016-0-7-9-9
УДК 678.8
Orlov E.V., Gusev Y.A., Khrulkov A.V., Korotkov I.A.
Comparative analysis of stickiness determination methods of prepreg

ATL and AFP methods of automated placement are widely used worldwide to increase the productivity and accuracy of prepregs placement in manufacture of large PCM-based parts. However conventional prepregs are not always suitable for processing by these methods - they are subject to specific requirements in technological tack providing with precise fixation and orientation of layers and easy separation from backing paper. There is no standard method for the tack determination, so this article reviews various widely used in Russian and international industry tack determination methods, conclusions are made on their precision, efficiency and usability for different prepreg laying methods. The work was executed within implementation of the complex scientific direction 13.2. «Constructional PCM» («The strategic directions of development of materials and technologies of their processing for the period till 2030»)

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10.
dx.doi.org/ 10.18577/2307-6046-2016-0-7-10-10
УДК 620.179.1:678.8
Murashov V.V., Slyusarev M.V., Evdokimov A.A.
Quality control of covers of arch elements of elevated parts of support of fast-erected bridge constructions from PСM

Research results on possibility of non-destructive quality testing of PCM covers of arch elements applied in bridges are considered. Applicability of acoustic impedance method for identification of material integrity disturb in the form of zones with poor binder impregnation at formation, exfoliation and filling degree of arch elements by concrete is shown. The work is executed within implementation of the complex scientific direction 2.3. «Methods of nondestructive research and control» («The strategic directions of development of materials and technologies of their processing for the period till 2030»)

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11.
dx.doi.org/ 10.18577/2307-6046-2016-0-7-11-11
УДК 678.8:678.019.3
Pavlov M.R., Nikolaev E.V., Andreeva N.P., Barbotko S.L.
To the question of methodology for testing of polymer materials on resistance to solar radiations effect (review)

An overview of modern methods of polymer materials testing on aging under the influence of natural and artificial weathering factors is presented. The mechanisms of thermal and photo-degradation of polymers under the influence of solar radiation are described. The basic parameters of equipment used for testing are shown. A comparison of the spectral distribution of the intensity of natural sunlight radiation and a radiation generated by the arc xenon lamp is performed. A comparison is conducted and found differences in the methods of accelerated laboratory tests for Russian and foreign standards are presented. The conclusions are made about the need to update the existing regulations in the Russian Federation. The work is executed within the frames of the complex scientific directions 18.2. «Development of methods of climatic tests and instrumental methods of research», 18.3. «Modeling and forecasting of climatic resistance» («The strategic directions of development of materials and t

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12.
dx.doi.org/ 10.18577/2307-6046-2016-0-7-12-12
УДК 678.8: 656.02
Doriomedov M.S., Daskovskiy M.I., Skripachyov S.Yu., Shein E.A.
Polymer composite materials in the Russian railways

Companies engaged in development and introduction of polymer composite materials in the rail transport in Russia are presented. Structures based on composites are exemplified. Brief analysis of main advantages of their application comparing with traditional materials and recommendations on improvement of composite materials implementation in railway are provided. The work is executed within the frames of the complex scientific direction 13.1. «Binders for polymer and composite materials for structural and special purpose» («The strategic directions of development of materials and technologies of their processing for the period till 2030»)

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