Archive - Электронный научный журнал "ТРУДЫ ВИАМ"

Articles

 







1.
dx.doi.org/ 10.18577/2307-6046-2020-0-67-3-10
УДК 669.295
Kablov E.N., Nochovnaya N.A., Shiryaev A.A., Davydova E.A.
Investigation of structural and phase transformations in metastable β-titanium alloys and effect of cooling rate from homogenization temperature on structure and properties of VT47 alloy. Part 1

The analysis of scientific and technical literature sources has been accomplished in the field of structural and phase transformations occurring in metastable β-titanium alloys upon cooling from homogenization temperatures in the β-phase area. It has been shown that a large number of factors influence the processes which take place during cooling, as well as the structure and properties after isothermal exposures. The main factors are the chemical composition of alloy, structural and phase transformations features, and the completeness of recrystallization processes. It has been revealed that the formation of the metastable βʹ-phase or a small amount of the secondary α-phase may not have a significant effect on strength, but significantly reduce plasticity.

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2.
dx.doi.org/ 10.18577/2307-6046-2020-0-67-11-18
УДК 669.018.28
Duyunova V.A., Leonov A.A., Trapeznikov A.V.
Method of increasing tightness and hardening of cast corrosion-resistant welded magnalias

Based on the studies, it was found that abrasive treatment of castings surface made from Al–Mg alloys in combination with hot isostatic pressing is a very promising stage of the technological process of manufacturing responsible cast parts and welded structural elements with high strength, corrosion resistance and tightness. Practice of proposed physical and mechanical complex treatment of VAL19 magnalia castings received in cold-box mold allows getting solid structure(I–II point) and high tightness castings, and also guarantee high level of mechanical properties.

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3.
dx.doi.org/ 10.18577/2307-6046-2020-0-67-19-28
УДК 667.621
Shitov R.O., Kitaeva N.S., Shiryakina Yu.M., Kurshev E.V.
Research of influence of modifiers of varied nature on the thermo-oxidative stability of a model silicone binder

The literature data on the use of various modifiers as additives that increase heat resistance of polymer binders in an oxidizing environment are analyzed. Influence of the nature of modifiers – pyrogenic silicon dioxide (aerosil A-380), cristobalite, asbestos (processed for adhesives), wollastonite, iron oxide (III), cerium (IV) oxide on the thermo-oxidative stability of a model silicone binder, and their concentration patterns have been investigated. Microphase structure of modified samples with a cured matrix of a model silicone binder was evaluated.

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4.
dx.doi.org/ 10.18577/2307-6046-2020-0-67-29-37
УДК 339.13.017:678.8
Doriomedov M.S.
Russian and world market of polymer composites (review)

The article is devoted to the market of polymer composite materials in Russia and the world. The data on the estimated volume of the composites market in value and physical terms in the world and Russia are given based on the calculations of the authors and the analysis of literary sources. The data on the volumes of application of composite materials in various industries are presented. The state of production of reinforcing components for the production of polymer composite materials is considered.

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5.
dx.doi.org/ 10.18577/2307-6046-2020-0-67-38-44
УДК 678.8
Kolobkov A.S.
Polymer composite materials for various aircraft structures (review)

The article describes the new polymer composite materials developed recently in FSUE «VIAM», which are used in various aviation equipment, using a variety of reinforcing fillers and polymer binders. These developments are associated with the development of a new technological structure, the emergence of new requirements for aviation products and increasing requirements for existing ones, which in turn creates certain requirements for materials. The brands of materials, their application areas and operating temperatures are also presented.

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6.
dx.doi.org/ 10.18577/2307-6046-2020-0-67-45-61
УДК 669.018.95
Batienkov R.V., Burkovskaya N.P., Bolshakova A.N., Khudnev A.A.
High temperature metal matrix composite materials (review)

A review of our own country and foreign papers in the field of high temperature metal matrix composite materials was conducted in this work. A classification of composite materials was considered. Main types of structures and characteristic properties were described. Matrix metals and alloys for obtaining high temperature composite materials were reviewed. Iron-and nickel-based composites and refractory metals and their compounds are considered in separate groups. Prospects for further research in the field of high-temperature composite materials were identified – for example, the use of composites in additive manufacturing.

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7.
dx.doi.org/ 10.18577/2307-6046-2020-0-67-62-71
УДК 665.939.5
Starkov A.I., Kutsevich K.E., Tyumeneva T.Y.
Development of adhesive composite material based on UMT49S-12K-EP alternative carbon filler and VSK-14-3 adhesive binder

This article presents the results of the tests of basic physical and mechanical properties of adhesive polymer composite material (PCM) based on VSK-14-3 adhesive binder with heat resistance of 150 °C and a domestic alternative unidirectional high-strength carbon filler used for production of structural parts (including honeycomb structures) in one technological cycle of sheathing molding and gluing with honeycomb layer, designed for operation in the temperature range from minus 60 to plus 150 °C, with the aim of developing the domestic PCM market to maintain global competitiveness as well as increasing independence from western producers. The article contains information about the features of the technological production process of structural elements from polymer composite materials based on adhesive binders.

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8.
dx.doi.org/ 10.18577/2307-6046-2020-0-67-72-80
УДК 677.024.5
Sidorina A.I., Safronov A.M.
Development of carbon fabrics with high surface density manufacturing technologies

The article describes features of development of carbon fabrics with high surface density manufacturing technologies for applying as reinforcing fillers at manufacturing of constructional polymeric composite materials and for manufacturing of composite equipment. The technical calculation of carbon fabrics and the construction of a filling pattern depending on the requirements for the developed carbon fabrics are shown. Results of determination of properties of the carbon fabrics received on established filling parameters and technological modes of manufacturing are presented.

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9.
dx.doi.org/ 10.18577/2307-6046-2020-0-67-81-90
УДК 620.192.63
Demidov A.A., Kosarina E.I., Kourova N.V., Mikhailova N.A.
Sensitometer for building characteristic curves of X-ray films and determining the sensitivity to radiation and gradient in accordance with ISO 11699-1:2008 requirements

A comparison of the VIAM method for testing х-ray films and ISO 11699-1:2008 showed the objectivity of the latter. The description of the sensitometric facility is given in this article. The calculation of the length of the combined Windows of the sensitometer disk is presented, which allows to obtain the dependence of the optical density on the logarithm of the radiation dose directly from the taken readings. The presented sensitometric characteristics obtained as a result of testing of radiographic films Agfa D4, Agfa D5, Agfa D7 are correspondingly adequate to the classes of film systems declared by the Agfa (Belgium) according to ISO 11699-1:2008. The characteristic curves of the tested films are created, which determine the fog, gradients at an optical density of 2 and 4 В, and the sensitivity of the films to radiation at an optical density of 2 В.

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10.
dx.doi.org/ 10.18577/2307-6046-2020-0-67-91-100
УДК 620.193.8
Varchenko E.A., Vetrova E.Yu.
Research of the biological and corrosion resistance of samples of aluminum alloy after natural tests in the Gelenjik bay. Part 1

The main goal in the formulation of this work was to study the influence of biological and physico-chemical factors of sea water on the change in the properties of metallic and nonmetallic materials in the coastal zone of the Gelendzhik Bay. In this part of the article, the biological component of this work is considered, a qualitative and quantitative assessment of biofouling materials after a seasonal (summer) exposure is given. Separately, attention is focused on the lack of reliable, simple and, most importantly, reliable experimental techniques to unambiguously distinguish the biological component from the general corrosion background.

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11.
dx.doi.org/ 10.18577/2307-6046-2020-0-67-101-117
УДК 614.841.345:629.7.042.2
Barbotko S.L., Volnyj O.S., Bochenkov M.M.
Analysis of the US federal aviation administration proposals for the reform of aviation standards regarding the fire safety of used materials (review)

A draft of the US Federal Aviation Administration on amendments to the text of aviation standards regarding fire safety requirements is considered. In the proposed set of documents, a significant change in the requirements and the test methods used is planned. After the adoption of this amendment, in order to certify new brands of domestic aviation equipment for compliance with foreign aviation standards, as well as to create competitive materials, it is necessary to develop a domestic testing base for conducting fire tests.

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12.
dx.doi.org/ 10.18577/2307-6046-2020-0-67-118-128
УДК 539.24
Valevin E.O., Startsev V.O., Zelenina I.V.
Thermal aging, surface degradation and water transfer in carbon fiber reinforced plastic VKU-38TR

Using the methods of thermogravimetry, analysis of 3D images of the surface topography and kinetics of moisture transfer, the mechanism of thermal aging and physicochemical transformations under the influence of elevated temperatures in carbon fiber reinforced plastic VKU-38TR is studied. According to the results of profilometry, it was proved that the degree of destruction of the surface layer of the studied carbon fiber reinforced plastic depends on the duration of exposure to the operating temperature and its value. The significant effect of thermal aging on the moisture absorption of carbon fiber reinforced plastic is shown.

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