Archive - Электронный научный журнал "ТРУДЫ ВИАМ"

Articles

 


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1.
dx.doi.org/ 10.18577/2307-6046-2024-0-1-3-12
УДК 669.715:621.78
Shchetinina N.D., Savichev I.D., Kotlyarova M.R., Selivanov A.A.
FEATURES OF HEAT TREATMENT OF A THERMOSTABLE ALLOY OF THE Al–Fe–Ni–Zr SYSTEM

This work shows the effect of annealing in various modes on the hardness, tensile mechanical properties and microstructure of Al–Fe–Ni–Zr system alloy ingots. Alloys of this alloying system are characterized by stable high heat resistance and can be used in the manufacture of parts operating at elevated temperatures. Among the tested temperature and time parameters of annealing, the greatest hardening is provided by two-stage annealing according to the following regime: stage 1 – 320 °С, 30 h; stage 2 – 400 °С, 4 h.

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2.
dx.doi.org/ 10.18577/2307-6046-2024-0-1-13-26
УДК 669.721.5: 621.762.224
Volkova E.F., Mostyaev I.V., Akinina M.V., Alikhanyan A.A.
STUDIES OF THE REGULARITIES OF THE HEAT TREATMENT INFLUENCE ON THE STRUCTURE, PHASE COMPOSITION AND MECHANICAL PROPERTIES OF MEDIUM-SIZED FORGINGS MADE OF HEAT-RESISTANT ALLOY OF THE Mg‒Zn‒Zr‒REE SYSTEM

The paper presents the results of determining the mechanical properties, comparative research of the microstructure and phase composition of medium-sized forgings made of heat-resistant magnesium alloy of the Mg–Zn–Zr–REE system in non-heat-treated and aged states. It was founded that the anisotropy of the main mechanical properties of forgings does not exceed 7–12,5 % in the longitudinal, transverse and altitude directions in all studied states. The highest and most stable level of properties is characteristic of the non-heat-treatedt state in the longitudinal direction. A special feature is the reduction of strength properties during aging by 5–8 %.

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3.
dx.doi.org/ 10.18577/2307-6046-2024-0-1-27-34
УДК 669.018:669.721.5
Trofimov N.V., Tokarev M.S., Mukhina I.Y., Uridiya Z.P.
DEVELOPMENT TRENDS OF MODERN TECHNOLOGIES FOR MODIFYING MAGNESIUM ALLOY SYSTEMS Mg–Al–Zn–Mn

The article presents the results of patent and technical research in the field of developed technologies for smelting magnesium alloys using modifiers with refining ability of both Russian and foreign scientists and global companies. Research is focused on finding technologies production of modifiers in the form of tablets/bars/pieces; introducing powders into the melt of metals by mechanical mixing or in compacted form under a flux; increasing the environmental friendliness of the modification process with the joint introduction of salts and/or purging with inert gases; the use of external influences (ultrasound, vibrations, electromagnetic field) together with the input of a modifier.

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4.
dx.doi.org/ 10.18577/2307-6046-2024-0-1-35-43
УДК 678.8
Solovyanchik L.V., Minaeva L.A., Gurov D.A.
THE INFLUENCE OF CARBON FILLER TYPE ON THE PHYSICAL, MECHANICAL AND ELECTRICALLY CONDUCTIVE PROPERTIES OF POLYAMIDE-BASED INJECTION MOLDED THERMOPLASTIC MATERIALS

The low level of electrically conductive properties is one of the limiting factors for their use of thermoplastic materials for the production of instrument housings, radio-controlled equipment, structural elements of aircraft and ground equipment operating in conditions of dry air and interaction with other dielectrics. It is shown that by changing the type of the carbon filler, extra adding a modifier with carbon nanotubes and a plasticizer, it is possible to influence the electro-physical and mechanical characteristics of injection molded polymer compositions to achieve the required level of properties.

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5.
dx.doi.org/ 10.18577/2307-6046-2024-0-1-44-51
УДК 678.8
Morozova V.S., Ivanov M.S., Shestakov A.M., Pavlukovich N.G.
THE INFLUENCE OF THE MELT FLOW OF POLYETHERETHERKETONE ON THE CHARACTERISTICS OF CARBON FIBER PLASTIC BASED ON IT

The properties of carbon fiber based on polyetheretherketone with different melt flow rate (from 52 to 1590 g/10 min) synthesized at the Federal State Unitary Enterprise «All-Russian Scientific-Research Institute of Aviation Materials» of National Research Center «Kurchatov Institute» have been studied. The dependences of the values of the deformation and strength characteristics of carbon fiber on the MFR of the polymer binder have been revealed. The maximum values of the MFR of polyetheretherketone for production of carbon fiber with physical and mechanical properties that are not inferior to the characteristics of sheet carbon fiber VCU-65, developed by NRC «Kurchatov Institute» – VIAM.

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6.
dx.doi.org/ 10.18577/2307-6046-2024-0-1-52-59
УДК 629.7.023
Kashin D.S., Stekhov P.A., Chesnokov D.V.
MODERN TRENDS IN THE DEVELOPMENT OF CHEMICAL VAPOR DEPOSITION COATINGS

The chemical vapor deposition method ensures uniformity of the applied coating over the entire surface of the part, however, it has a number of drawbacks that are currently being technologically solved. The problem of applying the coating to all surfaces is being addressed with the help of masking pastes and powder mixtures. The main methods of chemical vapor deposition processes for applying diffusion coatings are considered. The superiority over coatings applied by powder methods is demonstrated.

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7.
dx.doi.org/ 10.18577/2307-6046-2024-0-1-60-77
УДК 699.81
Potapova A.I., Bobrova I.I., Evdokimov A.A., Venediktova M.A.
PRESCRIPTION TECHNIQUES FOR CREATING ELASTOMERIC COMPOSITIONS WITH REDUCED FLAMMABILITY

This article is devoted to the analysis of existing methods of increasing the fire resistance of elastomers. The stages and mechanism of the combustion process are considered. Methods for assessing flammability, flammability classes, and prescription methods for increasing the fire resistance of rubbers are described. Rubbers that are of interest for the creation of materials with reduced flammability are listed, and energy characteristics, by which their resistance to open flame is assessed, are given. Traditional flame-retardants used to increase the fire resistance of elastomers and the new ones are presented. The areas of application of low-flammable rubbers are shown.

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8.
dx.doi.org/ 10.18577/2307-6046-2024-0-1-78-91
УДК 620.193
Kutyrev A.E., Vdovin A.I., Antipov V.V., Duyunova V.A.
METHODOLOGICAL ISSUES OF STUDYING THE EFFECTIVENESS OF ANTICORROSION PROTECTION USED IN AVIATION EQUIPMENT PRODUCTS

The question of development of methodology for testing, allowing to choose the most highly effective complex system of anticorrosion protection, is considered. The principles of testing of corrosion protection systems are noted/ Structurally similar specimens representing the connection of aluminum alloy 1163-AT and carbon plastic of mark VKU-25 with the help of fasteners from titanium alloy BT6 as with application of protective coatings on the basis of primers, enamels, varnishes, sealants and pastes, and without their application are made. The algorithm of evaluation of corrosion lesions on structural-like samples for selection of complex protection system is proposed.

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9.
dx.doi.org/ 10.18577/2307-6046-2024-0-1-92-100
УДК 550.4
Zaporozhskaya A.A., Marachovskiy P.C., Shorstov S.Yu.
METHODOLOGICAL FEATURES OF STUDYING THE WATER CONTENT IN SOLID MATERIALS WITH CLOSED POROSITY

A method for the quantitative determination of water and qualitative content of hydrocarbons in oil-bearing rock is proposed using methods of simultaneous thermal analysis and gas chromatography with mass selective detection. A method for analyzing water and light hydrocarbons has been selected. A calibration characteristic was constructed to determine the quantitative water content. Samples of two rock types, namely, bituminous silicite and calcareous siliceous dolomite, were studied. There were developed dependencies of mass loss on temperature and time during gravimetric research. Using the results obtained, the water content in the oil-bearing rock was assessed. The error of the analysis method was calculated.

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10.
dx.doi.org/ 10.18577/2307-6046-2024-0-1-101-112
УДК 620.179
Pichugin S.S., Shitikov V.S., Golovkov A.N.
NON-DESTRUCTIVE METHODS FOR RESIDUAL STRESS ASSESSMENT

The article gives an overview of the most common and promising nondestructive methods of residual stress evaluation. Diffractometric, ultrasonic, magnetic, potential drop and eddy current methods of residual stress assessment are presented and their comparative analysis is carried out. Advantages and disadvantages of each method are given, and conclusions are made about application specifics of testing objects made of different materials. This article is relevant for specialists studying the problem of stress-strain state estimation of materials.

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11.
CONTENТS

Light-metal alloys

 

Shchetinina N.D., Savichev I.D., Kotlyarova M.R., Selivanov A.A. Features of heat treatment of a thermostable alloy of the
Al–Fe–Ni–Zr system

 

Volkova E.F., Mostyaev I.V., Akinina M.V., Alikhanyan A.A. Studies of the regularities of the heat treatment influence on the structure, phase composition and mecha-nical properties of medium-sized forgings made of heat-resistant alloy of the Mg‒Zn‒Zr‒REE system

 

Trofimov N.V., Tokarev M.S., Mukhina I.Yu., Uridia Z.P. Development trends of modern technologies for modifying magnesium alloy systems Mg–Al–Zn–Mn

 

 

Polymer materials

 

Solovyanchik L.V., Minaeva L.A., Gurov D.A. The influence of carbon filler type on the physical, mechanical and electrically conductive properties of polyamide-based injection molded thermoplastic materials

Composite materials

 

Morozova V.S., Ivanov М.S., Shestakov A.M., Pavlukovich N.G. The influence of the melt flow of polyetheretherketone on the characteristics of carbon fiber plastic based on it

 

Protective and functional

coatings

 

Kashin D.S., Stekhov P.A., ChesnokovD.V. Modern trends in the development of chemical vapor deposition coatings

 

Potapova A.I., Bobrova I.I., Evdokimov A.A., Venediktova M.А. Prescription techniques for creating elastomeric compositions with reduced flammability

 

 

Material tests

 

Kutyrev А.E., Vdovin A.I., Antipov V.V., Duyu-nova V.A. Methodological issues of stu-dying the effectiveness of anticorrosion protection used in aviation equipment products

 

Zaporozhskaya A.A., Marakhovsky P.S., Shorstov S.Yu. Methodological features of studying the water content in solid mate-rials with closed porosity

 

Pichugin S.S., Shitikov V.S., Golovkov A.N. Non-destructive methods for residual stress assessment

 

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