Last number - Электронный научный журнал "ТРУДЫ ВИАМ"

Last number

 
№4  2025

1.
dx.doi.org/ 10.18577/2307-6046-2025-0-4-3-13
УДК 621.74.043.2
Forostovich T.L., Narskiy A.R., Bityutskaya O.N., Mokeev N.A.
PRODUCTION OF MODEL COMPOSITIONS FOR INVESTMENT CASTING IN THE NATIONAL RESEARCH CENTER «KURCHATOV INSTITUTE» – VIAM

The article presentsan overview of materials related to the technological process of production of modern model compositions for casting ofcritical parts of gas turbine engines from nickel superalloys made by the National Research Center «Kurchatov Institute» – VIAM. The general characteristics of model compositions are considered, including the composition and basic requirements for them, as well as issues of the activity of the manufacturing area established in the mid-2010s and producing a wide range of high-quality model compositions based on domestic raw materials.

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2.
dx.doi.org/ 10.18577/2307-6046-2025-0-4-14-27
УДК 669.295
Shiryaev A.A., Arislanov A.A., Putyrskiy S.V., Vostrikov N.F.
EXPERIENCE OF USING ADDITIVE MANUFACTURING WASTE IN THE PRODUCTION OF POROUS SEMI-FINISHED PRODUCTS FROM TITANIUM ALLOYS VT1-00 AND VT6

The article presents the results of studies of the structure and physical and mechanical properties of porous half-blanks manufactured by sintering in vacuum furnaces from powder of VT1-00 and VT6 titanium alloys. It is shown that the designed mode provides the level of mechanical properties and the degree of porosity of semi-finished products sufficient for use in the aerospace industry, energy and food industries. Samples of products were manufactured from porous semi-finished products of titanium alloys VT1-00 and VT6 using high-temperature soldering technology to form permanent joints.

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3.
dx.doi.org/ 10.18577/2307-6046-2025-0-4-28-41
УДК 669.295
Makushina M.A., Panin P.V., Kochetkov A.S.
EQUIPMENT AND TECHNOLOGIES FOR SHAPED CASTING OF TITANIUM ALLOYS

This article provides an overview of foreign publications about the equipment and technologies for casting of titanium alloys. All stages of casting are considered: computer modeling of casting processes and special modeling programs; equipment and manufacturing technologies for smelted and burnt models, including those using additive technologies; materials for the manufacture of ceramic molds; traditional and fundamentally new technologies for the direct manufacture of castings. For each section, the level of development and research of the National Research Center «Kurchatov Institute» – VIAM is noted.

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4.
dx.doi.org/ 10.18577/2307-6046-2025-0-4-42-56
УДК 669.721: 621.762.224
Volkova E.F., Alikhanyan A.A., Akinina M.V., Mostyaev I.V.
NEW TECHNOLOGICAL PROCESSES IN THE PRODUCTION OF HIGH-QUALITY SEMI-FINISHED PRODUCTS FROM MAGNESIUM ALLOYS

The article provides an overview of the most significant publications devoted to the problem of developing new technological processes in the production of high-quality semi-finished products from magnesium alloys. It has been determined that along with the search for sparingly alloyed compositions there is an active exploration of promising technological processes for the production of semi-finished products from magnesium alloys. These actions are accompanied by the search for original engineering solutions in the design and use of appropriate non-standard equipment.

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5.
dx.doi.org/ 10.18577/2307-6046-2025-0-4-57-69
УДК 669.721.5
Trofimov N.V., Leonov A.A., Duyunova V.A., Tokarev M.S.
MODERN APPROACHES TO IMPROVING THE QUALITY OF CASTING AND LOCAL REPAIRS OF PRODUCTS MADE OF MAGNESIUM ALLOYS

The article presents the results of research on the technology of eliminating castingdefects by cold gas-dynamic spraying of serial magnesium alloys ML5hp and ML10 using serial powders. The influence of powder compositions on mechanical properties and adhesion has been studied. The results of studies of samples and castings of magnesium alloy VML26 obtained under various smelting modes are considered. The mode of smelting of magnesium alloy VML26 in the induction melting unit is selected. The microstructure, chemical composition, and mechanical properties of magnesium alloy samples were studied.

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6.
dx.doi.org/ 10.18577/2307-6046-2025-0-4-70-80
УДК 669.018.95
Postnov V.I., Postnova M.V., Antipov V.V., Veshkin E.A
STUDY OF DYNAMIC CHARACTERISTICS OF SAMPLES FROM METAL-POLYMERIC MATERIALS AND ALUMINIUM ALLOY D16ch-AT

The experience of metal-polymeric composite materials (MPCM) application shows that these materials have a higher durability than traditional aluminum alloys. The article considers results of comparative tests for determination of the elastically damping properties of different types of MPCM and alloy D16. The studies show that the modulus of elasticity and Poinson’s coefficient of the tested MPCM panels are practically independent of the load level in the studied range of relative deformations and close to the values of alloy D16. The damping capacity is slightly dependent on the MPCM structure and logarithmic oscillation discretion is 5 %, while it does not exceed 0,6 % in the alloy D16.

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7.
dx.doi.org/ 10.18577/2307-6046-2025-0-4-81-95
УДК 667.6
Zakharov К.Е., Fomina M.A., Vdovin A.I., Chumakova E.S.
EFFICIENCY EVALUATION OF THE COMPOSITION FOR LOW-TEMPERATURE FILLING OF SULFURIC ACID ANODIC-OXIDE COATING AND METHODS OF ITS ALTERNATIVE APPLICATION

The most known method of protection against corrosion of aluminum and its alloys is sulfuric acid anodic oxidation. The oxidized surface has a significant ability to resist aggressive external factors, high adhesion properties. However, the coating requires an additional treatment consisting of soaking in hot solutions, called filling. The article presents the results of research aimed at the development of the composition and a new method of filling anodic-oxide coating, the possibility of using this composition as a corrosion inhibitor is evaluated.

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8.
dx.doi.org/ 10.18577/2307-6046-2025-0-4-96-106
УДК 539.4:620.197
Startsev O.V., Koval T.V., Dvirnaya E.V., Kornienko G.V., Veligodsky I.M.
RESEARCH OF THE PROPERTIES OF CARBON FIBER REINFORCED PLASTIC WITH COATINGS AFTER 8 AND 13 YEARS OF AGING IN A MODERATELY WARM CLIMATE Part 3. Condition of the polymer matrix of а composite

The third part of the article studies physicochemical transformations in the polymer matrix of carbon fiber reinforced plastic KMKU-2m.120 by means of dynamic mechanical analysis. During 8- and 13-year climatic exposure, carbon fiber reinforced plastic plates were protected with paint and varnish coatings VE-46 and AC-1115 of nine colors. After removal from the exposure, the coatings were removed from the surface of the plates, and the temperature dependences of the dynamic storage modulus and the dynamic loss modulus were measured in two states: after drying and after moistening the samples at 60 °C.

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9.
dx.doi.org/ 10.18577/2307-6046-2025-0-4-107-128
УДК 579.017.8
Ermishev V.Yu.
ISOLATION OF BACTERIAL STRAINS OF POLYMER MATERIALS DESTRUCTORS FROM SAMPLES OF RECYCLED COOLING WATER FROM OIL REFINERIES AND PETROCHEMICAL PLANTS

The article presents methods for isolating bacterial strains of potential destructors of polymer materials, using the example of recycled water samples from enterprises producing petroleum products. The cultures were exposed with polymer materials and polymer substrates. Data on the species composition of bacterial cultures were obtained as a result of DNA sequencing of a fragment encoding the V4 site of the 16S rRNA of bacteria. The obtained pure cultures of bacteria of the genus Pseudomonas were used to obtain comparative growth kinetics in a mineral medium with the addition of jet and diesel fuel.

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10.
CONTENТS

Heat-resistant alloys and steels

 

Forostovich T.L., Narsky A.R., Bityutskaya O.N., Mokeev N.A. Production of model compositions for investment casting in the National Research Center «Kurchatov Institute» – VIAM

 

 

Light-metal alloys

 

Shiryaev A.A., Arislanov A.A., Putyrskiy S.V., Vostrikov N.F. Experience of using additive manufacturing waste in the production of porous semi-finished products from titanium alloys VT1-00 and VT6

 

Makushina M.А., Panin P.V., Kochetkov A.S. Equipment and technologies for shaped casting of titanium alloys

 

Volkova E.F., Alikhanyan A.A., Akinina M.V., Mostyaev I.V. New technological processes in the production of high-quality semi-finished products from magnesium alloys

 

 

Trofimov N.V., Leonov A.A., Duyunova V.A., Tokarev M.S. Modern approaches to improving the quality of casting and local repairs of products made of magnesium alloys

 

Composite materials

 

Postnov V.I., Postnova M.V., Antipov V.V., Veshkin E.A. Study of dynamic characteristics of samples from metal-polymeric materials and aluminium alloy D16ch-AT

Protective and functional

coatings

 

Zakharov K.E., Fomina M.A., Vdovin A.I., Chumakova E.S. Еfficiency evaluation of the composition for low-temperature filling of sulfuric acid anodic-oxide coating and methods of its alternative application

 

 

Material tests

 

Startsev O.V., Koval T.V., Dvirnaya E.V., Kornienko G.V., Veligodsky I.M. Research of the properties of carbon fiber reinforced plastic with coatings after 8 and 13 years of aging in a moderately warm climate. Part 3. Condition of the polymer matrix of а composite

 

Ermishev V.Yu. Isolation of bacterial strains of polymer materials destructors from samples of recycled cooling water from oil refineries and petrochemical plants

 

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