Articles

 


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1.
dx.doi.org/ 10.18577/2307-6046-2016-0-12-1-1
УДК 669.018.28:669.721.5
Trofimov N.V., Leonov A.A., Duyunova V.A., Uridiya Z.P.
Cast magnesium alloys (review)

Magnesium alloys in a review article were examined. They are divided, depending on its application, as follows: high strength, heat resistant, corrosion resistant alloys. According to their purpose these alloys belong to different systems: Mg–Al–Zn, Mg–Zn–Zr, Mg–RE. The examples of alloys belonging to the above groups, their basic properties (tensile strength, yield strength, corrosion resistance, long-term strength, impact strength) and application fields were considered in the article. The work is executed within the implementation of the complex scientific direction 10.10. «Energy-efficient, resource-saving and additive technology of deformed semi-finished products and shaped castings from magnesium and aluminum alloys» («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/ 10.18577/2307-6046-2016-0-12-2-2
УДК 669.046.516
Uridiya Z.P., Mukhina I.Y., Duyunova V.A., Kozlov I.A.
The origins of flux corrosion in mouldings made of heatproof cast magnesium alloy ML10

The given article presents the results of the research of micro- and macrostructure of magnesium-zirconium additional alloy, preliminary alloy MTsr1N3 and alloy ML10 made of the listed batched materials. The alloying is hard for the elements melting points of which are higher than the melting point of magnesium. The zirconia alloying of magnesium alloys is processed through the preliminary magnesium-zirconium additional alloy melting points of which are lower than the melting point for zirconium. The zirconia alloying of light alloys is difficult not only because the melting points for zirconium are too high, but because of its activity as well: zirconium interacts with hydrogen, oxygen, nitrogen, aluminum, ferrum, silicon, carbon and other elements. The origins of contamination of magnesium alloy ML10 with the elements that are infusible with magnesium, such as intermetallides of zirconium and aluminum or ferrum or silicon and molecular entities of zirconium-oxygen and zirconium-hydr

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3.
dx.doi.org/ 10.18577/2307-6046-2016-0-12-3-3
УДК 669.018.95
Lomov S.B.
New generations of constructional metal matrix composites on the basis of aluminum alloy reinforced by continuous and discrete Al2O3 fibers (review)

The paper provides an overview of scientific and technical literature in the field of advanced technologies for the production of metal matrix composite based on aluminum alloys reinforced with continuous or discontinuous alumina fibers. The main processing methods of receiving this class of materials, their advantages and shortcomings are shown. The paper provides on physical-mechanical properties of metal composite materials on the basis of aluminum alloys reinforced by aluminum oxide fibers. All leading countries in the world are engaged in development of metal matrix composite based on aluminum alloy reinforced with continuous and discontinuous fibers of Al2O3. Space and military agencies demonstrate a particular interest in such developments Tendencies of development of technological approaches to production of metal matrix composite based on the aluminum alloys reinforced by aluminum oxide fibers are revealed.

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4.
dx.doi.org/ 10.18577/2307-6046-2016-0-12-4-4
УДК 669.14.018.8
Voznesenskaya N.M., Shestakov I.I., Tonysheva О.А.
Influence of modes of annealing on tendency to brittle fracture of large-size forgings from high-strength corrosion-resistant steel 18kH13N4K4S2АМ3

Influence of modes of annealing on tendency to fragile fracture during storage or when machining large-size forgings from high-strength corrosion-resistant steel 18kH13N4К4S2АМ3 is investigated. It is revealed that the reason of fragile fracture is violation of modes of annealing, bringing to existence in structure of not tempered martensite that in the presence of residual stress in a forging leads to cracking. It is shown that an optimum mode of annealing is the mode allowing to get structure of the high-tempered martensite with a small amount of stable retained austenite (4–10 %) and evenly distributed carbides (carbonitrides). Work is executed within implementation of the complex scientific direction 8.2. «High-strength constructional and corrosion-resistant welded steels with high fracture toughness» («The strategic directions of development of materials and technologies of their processing for the period till 2030»)

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5.
dx.doi.org/ 10.18577/2307-6046-2016-0-12-5-5
УДК 669.35
Tebyakin А.V., Fokanov A.N., Podurazhnaya V.F.
Multipurpose copper alloys

The article introduces VIAM experience of work with copper-beryllium alloys: from production of copper-beryllium ligatures to obtaining beryllium bronze for special purposes. New Cu–Be–Ni-based composition of beryllium bronze as well as the technology of producing extruded bars with improved combination of strength and physical properties to increase service life of produced products has been developed. The research shows that the high resistance to rupture (1140–1210 MPa) and hardness index 42 HRC that beryllium bronze bars receive after heat treatment allow increasing durability of products. The high heat conductivity (144 W/(м•K)) provides better heat removal from friction couple thereby avoiding overheat of the products as well as increasing their resource. Work is executed within implementation of the complex scientific direction 8.6. «Elinvar, wear-resistant alloys and high-strength beryllium-bearing steels for devices and units» («The strategic directions of development of

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6.
dx.doi.org/ 10.18577/2307-6046-2016-0-12-6-6
УДК 621.763
Mitin A.O., Sentiourin E.G., Mekalina I.V., Bogatov V.A.
Protective shock-resistant and vandal-proof materials and laminated glass composition

Overview of the results of patent research in the field of development of materials and multilayered vandal-proof glazing compositions, nonshatterable, safety technical means of protection, designed for open installation in public places is presented. The main world trends are identified in the field of development of vandal-proof transparent composite materials provided reducing weight of products, improvement in performance and giving variable functional properties to the material . Work is executed in the framework of the integrated scientific direction 15.4. «Optical materials and glazing materials» («Strategic directions of development of materials and technologies for processing them for the period up to 2030»)

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7.
dx.doi.org/ 10.18577/2307-6046-2016-0-12-7-7
УДК 677.017
Nesterova T.A., Platonov M.M., Nazarov I.A., Barbotko S.L.
Researches on development new material for ballonet of pneumatic emergency slide of helicopter

Research on development of film-fabric material intended for manufacturing ballonets, survival equipment of helicopter crew are conducted. Frictioned fabric applied now for manufacturing ballonets has an insufficient bonding strength of coating with fabric and as a result short service life of ballonets. For carrying out research materials have been made of synthetic polyamide or polyester fabrics with double-sided polymer coating on the basis of polyurethane rubbers of brands SKU-8A and SKU-8TB, mix of ethylene-propylene rubber of SKEPT-40 brand with butyl rubber of BK-1675N brand and siloxane rubber of SKT brand. Their physical, physicomechanical and special properties are studied. It is shown that film-fabric material made on the basis of polyester fabric аrt. 208 and polyurethane SKU-8TB rubber is the most conformed to the requirements.

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8.
dx.doi.org/ 10.18577/2307-6046-2016-0-12-8-8
УДК 678.747.2
Mishurov K.S., Mishkin S.I.
Environmental effect on properties of CFRP (Carbon Fiber Reinforced Plastic) VKU-39

The influence of climatic factors and operating fluids on the properties of CFRP VKU-39 (on the basis of reinforcing carbon fabric and epoxy binder VSE-1212), manufactured by autoclave molding is investigated. It is shown that the CFRP VKU-39 has a high level of property preservation (not less than 80% of the initial value) when exposed to environmental factors (thermal and hydrothermal aging, resistance to the salt spray chamber, water, moisture, fuel, oil, anti-icing fluid and solvent ) and meets the aviation safety requirements for corrosion and flammability. The work is executed within the implementation 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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9.
dx.doi.org/ 10.18577/2307-6046-2016-0-12-9-9
УДК 678.7
Petrova G.N., Beider E.Ya.
Development and research of finishing compositions for thermoplastic carbon plastics

The results of research on development of finishing intermediate layer on carbon fiber under thermoflexible matrix (polysulphone) for the purpose of increase in characteristics of the fiber itself and improvement of physical-mechanical properties of carbon plastic on its basis are presented in the article. Properties of carbon plastics on the basis of carbon reinforcements – ELUR, UKN-2500 and UKN-5000 are given. The Influence of finishing carbon fibers on interlaminar strength and porosity of carbon plastics on the basis of the polysulfonic binding is shown. The assessment of efficiency of finishing compositions on the basis of polysulphone PSF-TP, polystyrene, bismaleinimides and oligoetherakrylates is given. It is shown that for finishing carbon fibers both polymers and oligomerous structures can be used. However the greatest effect is shown when using oligomerous or monomeric finishing compositions which are water-soluble, possess the increased thermal stability and have functio

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10.
dx.doi.org/ 10.18577/2307-6046-2016-0-12-10-10
УДК 620.179:678.747.2
Boychuk A.S., Murashov V.V., Chertishchev V.Yu., Dikov I.A.
Determination of porosity in monolithic constructions from CFRPs by ultrasonic reflection metod with use of laser initiation of ultrasonic vibrations

Physical bases of laser and ultrasonic method of echo-pulse technique for determination of porosity of CFRPs are considered. It is shown that diagnostics parameter under control is a normalized energy of the noise component of the backward scattered acoustic signal determined by spectral characteristics of the acoustic waves scattering by pores.

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11.
dx.doi.org/ 10.18577/2307-6046-2016-0-12-11-11
УДК 543.423.1
Pechishcheva N.V., Mayorova A.V., Evdokimova O.V., Shunyaev K.Yu., Titov V.I.
Selection of internal standard for ICP-AES determination of alloying components in heat-resistant Ni-alloys by thermodynamic modeling

A theoretical selection of the optimal internal standard for ICP-AES determination of alloying components (Cr, Ti, Mo, W, Ta, Al, Co, Re, Ru) in the latest generation heat-resistant Ni-alloys (HRNA) was carried out by using the thermodynamic modeling method and software TERRA for different operating conditions of measurement. The results of modeling demonstrated the efficiency of internal standardization to compensate the instrumental drift on the analytical signal in the process of ICP-AES analysis of alloying components. Analytical line In II 230,606 nm was recognized as the best line among the investigated ones for internal standardization. Experimental testing confirmed its efficiency. Thus, the line In II 230,606 nm is recommended as an internal standard for ICP-AES analysis of HRNA alloying components. The work is performed within the framework of an integrated research area 2.1. «Fundamentally Oriented Research» («Strategic directions of development of materials and technologie

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12.
dx.doi.org/ 10.18577/2307-6046-2016-0-12-12-12
УДК 621.357.7
Nikiforov A.A., Smirnov K.N., Kravchenko D.V., Arhipov E.A., Zakirova L.I., Vinogradov S.S.
The applicability of the sulfate-ammonium cadmium plating solution with additive TsKN-04 for the aviation industry

In sulfate-ammonium cadmium plating solution with additive TsКN-04 the concentration ranges of the components of the electrolyte are identified to allow obtaining light compact cadmium coatings on complex geometry parts. The electrolyte has a high scattering (50–94%) and covering (92–95%) power that are comparable and sometimes exceeding the same parameters from cyanide electrolytes. With carrying out preventive corrections the electrolyte shows high operational stability and it can be applied in mass production. Mechanical tests show that the technology of deposition of cadmium coating in the sulfate-ammonium bath with the additive TsKN-04 does not influence on mechanical properties of medium strength steels 30kHGSА. The work is executed within the implementation of the complex scientific direction 17.2. «Slip, gas-dynamic and combined coatings for details from carbon steels, including high-strength steels» («The strategic directions of development of materials and technologies of th

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