FEATURES OF PRODUCTION OF LARGE CASTING TURBINE BLADES BY DIRECTIONAL CRYSTALLIZATION OF NICKEL CORROSION RESISTЕNT SUPERALLOY

Samples of automated casting equipment with improved design are presented, namely, UVNK type units with two types of crystallizers: liquid metal (Al) and «alternative» – water-cooled container without liquid metal. Sample equipment is designed for casting large-sized GTU parts with required regulated (directional, monocrystalline) structure made of corrosion-resistant nickel alloys for various purposes. Use of the improved design of the UVNK type units simplifies technological process practically without changing the thermal parameters.

Keywords: superalloys, directional crystallization, dendritic structure, units for single-crystal casting

Reference List

Full version

DOI: 10.18577/2713-0193-2025-0-2-13-32

UDC: 669.017.165

N.A. Nochovnaya¹, V.I. Ivanov¹, L.Yu. Avilochev¹

INTERMETALLIC COMPOUND Ti₂AlNb – PROMISING MATERIAL FOR AVIATION AND SPACE TECHNOLOGY Part 4. Fracture toughness of Ti₂AlNb alloys

Alloys based on the Ti2AlNb intermetallic compound are promising materials for use in aviation and space technology with temperatures up to 750 °C. The article analyzes foreign materials on the study of alloy compositions, the effect of thermomechanical and thermal processing operations on the parameters of microstructure and mechanical properties of alloys (strength, plastic, fracture toughness) at 20 °C and higher temperatures. The analysis showed that only lamellar orthorhombic microstructures of bimodal type possess an increased level of alloys properties.

Keywords: Ti2AlNb intermetallic compound, thermomechanical and thermal properties, microstructures, mechanical property, fracture toughness

Reference List

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Full version

DOI: 10.18577/2713-0193-2025-0-2-33-47

UDC: 539.3

V.V. Likhanskii¹, K.E. Ulybyshev¹, N.N. Elkin²

NUMERICAL SIMULATIONS OF THE PROCESSES INDUCED BY LASER SHOCK PEENING IN AMg6 ALUMINUM ALLOY

A finite-element computational code was developed for modeling of shock wave propagation during laser peening in surface layers of the material. Calculations of laser shock peening of samples from AMg6 alloy with aluminum coating were performed. Obtained maximal values of residual stresses in species are in good agreement with the experimental data. The calculated distribution of the yield strength over the depth and on the surface of the sample is presented. A comparison of the calculated and experimental distributions of dislocation density over depth at different values of the model parameters is carried out.

Keywords: laser shock peening, residual stress, yield stress, dislocation density, numerical simulations, aluminum alloy

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Full version

DOI: 10.18577/2713-0193-2025-0-2-48-58

UDC: 532.61.08

R.K. Salakhova¹, E.A. Veshkin¹, Yu.I. Sudin¹, A.A. Barannikov¹

EFFECT OF ROUGHNESS ON SURFACE-ENERGY CHARACTERISTICS AND WETTING PROPERTIES OF FIBERGLASS

Using a processor tensiometer and a digital profilometer, measurements of surface energy characteristics and an assessment of the microrelief of KMKS-2m.120.T10.37 fiberglass samples were performed. The article presents the results of a study of the dependence of the free energy of the surface (FES) and the contact angle of wetting of fiberglass samples on the value of surface roughness obtained by different methods. A direct correlation between the roughness parameters and FES gives grounds to assert a homogeneous mechanism of fiberglass wetting according to the Wenzel model.

Keywords: roughness, processor tensiometer, profilometer, fiberglass, contact angle, free surface energy, wettability, adhesive bond

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Full version

DOI: 10.18577/2713-0193-2025-0-2-59-71

UDC: 678.747.2:620.17

E.A. Veshkin¹, A.V. Slavin¹, M.V. Postnova¹, A.V. Apalkova¹

THE ROLE OF TEMPERATURE-TIME CURING CONDITIONS IN THE FORMATION OF UNIDIRECTIONAL AND EQUALLY STRONG CARBON FIBER PLASTICS PROPERTIES

The results of studies of unidirectional and equal-strength carbon fiber samples manufactured using the same brand of polymer binder are presented. The influence of varying final curing temperatures on change in their properties of PCM has been studied. The results of mechanical and dynamic tests of the samples are presented. An estimate of the microhardness in the cross section of the samples is presented. The article presents images of microsections of the samples. Comparisons of the test results of equal-strength and unidirectional carbon fiber reinforced plastics cured according to different modes are presented and a change in the properties of these samples after the influence of boiling in water is established.

Keywords: carbon fiber, tensile strength, modeling, microhardness, dynamic modulus

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Full version

DOI: 10.18577/2713-0193-2025-0-2-72-90

UDC: 678.747.2

V.O. Startsev¹

CHANGES IN THE GLASS TRANSITION TEMPERATURE AND α-TRANSITION BOUNDARIES OF NANOMODIFIED CYANETER BINDING CARBON FIBER UNDER CLIMATIC INFLUENCES

The effect of carbon nanoparticles (astralenes) on the characteristic temperatures of the transition from the glassy to the highly elastic state of cyanoether carbon fiber binder (α-transition) was studied using the dynamic mechanical analysis method. Carbon fiber boards were exposed for 24 months on an open stand in moderate climate conditions with a combination of thermal cycles from –60 to +65 °C, and in climatic chambers. The relationship between the glass transition temperature, the boundaries of the α-transition and microphase separation of the binder with the processes of post-polymerization and destruction under climatic influences was analyzed.

Keywords: polymer composite materials, nanoparticles, climatic aging, destruction, post-polymerization, α-transition

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Full version

DOI: 10.18577/2713-0193-2025-0-2-91-102

UDC: 546.05:666.3.016

I.V. Sudzhanskaya¹, Yu.E. Lebedeva¹, M.L. Vaganova¹, N.E. Shchegoleva¹

EFFECT OF CO-DOPED OF CeO2, Y2O3 ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF CERAMIC SPINEL MgAl2O4

MgAl2O4 and MgAl2O4–CeO2–Y2O3 samples were obtained by the solid-phase reaction method. X-ray phase analysis showed that both samples are dominated by a cubic structure with the space symmetry group Fd3m, but in the MgAl2O4–CeO2–Y2O3 system contains a second cubic phase with the space symmetry group Ia3d, which is approximately 1 %. It was found that the co-doped of CeO2 and Y2O3 of the MgAl2O4 ceramic spinel leads to an increase in the density, microhardness, fracture toughness and a decrease in porosity and water absorption.

Keywords: aluminum magnesium spinel, rare earth elements, microstructure, density, microhardness, fracture toughness

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Full version

DOI: 10.18577/2713-0193-2025-0-2-103-113

UDC: 669.018.9:621.762

B.D. Chernyshev¹, A.D. Kovalev¹, N.P. Siluk², S.S. Rojkov³, V.S. Shustov⁴, G.S. Ryzhkova³, S.A. Melnikov³

MICROSTRUCTURE AND FUNCTIONAL PROPERTIES OF BULK SAMPLES MADE FROM W–Ni–Cu PSEUDOALLOY BY COLD ISOSTATIC PRESSURE

The possibility of obtaining bulk samples of the W–Ni–Cu system by cold isostatic pressing with following liquid-phase sintering was considered. The method of hydrogen reduction of tungsten anhydride was used to obtain metallic tungsten powder. Powder compositions of a given chemical composition were obtained by low- and high-energy mixing of elementary powders using a turbulence mixer and a planetary ball mill, respectively. Pseudoalloy powders were used to obtain compacts by cold isostatic pressing, which were then subjected to the sintering stage in a reducing atmosphere. Samples made from the powder composition obtained in a turbulent mixer were characterized by high density in accordance with requirements of technical documentation. The metallography established that the average grain size after sintering of these products is 25–65 μm, which indicates high mechanical properties of obtained samples.

Keywords: pseudoalloy, tungsten, hydrogen reduction, powder metallurgy, cold isostatic pressure, liquid phase sintering, metallography analysis

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Full version

DOI: 10.18577/2713-0193-2025-0-2-114-127

UDC: 678.7:537.52

I.K. Nekrasov¹, I.Sh. Abdullin², F.R. Sagitova³

INCREASE OF STRENGTH CHARACTERISTICS OF COMPOSITE MATERIAL ON THE BASIS OF UHMWPE FABRIC BY MEANS OF MODIFICATION WITH CCP PLASMA OF LOW-PRESSURE DISCHARGE

The paper considers influence of finishing ultra high molecular weight polyethylene (abbr. UHMWPE) on the properties of composite material based on it. It is shown that the use of the filling agent (apprette), which allows to increase the wettability of UHMWPE materials, led to the deterioration of strength characteristics of UHMWPE fiber materials. The efficiency of the apprette removal from the UHMWPE surface by means of plasma of CCP discharge of reduced pressure, restoration of initial mechanical parameters of UHMWPE and improvement of strength characteristics of composite material based on plasma-treated UHMWPE has been established. TMA studies have been carried out to determine the temperature range of the UHMWPE-based composite operation, as well as the optimal matrix content.

Keywords: UHMWPE, CCP discharge, composite materials, appret

Reference List

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Full version

10.

DOI: 10.18577/2713-0193-2025-0-2-128-136

UDC: 621.798.264

I.S. Makushchenko¹, I.А. Kozlov¹, D.N. Smirnov¹, E.V. Kurshev¹, S.L. Lonskii¹

STUDY OF THE MICROSTRUCTURE AND DISTRIBUTION OF CORROSION INHIBITORS IN POLYSULFIDE SEALANT

The article analyzes the structure of polysulfide sealant containing various corrosion inhibitors. A mass change of the sealant after storage in distilled water and TS-1 fuel within 150 days has been examined. A number of corrosion inhibitors in the water exhaust of the sealant has been analyzed. The article provides the results of microstructural studies and elemental analysis of samples of polysulfide sealant with various corrosion inhibitors, as well as a comparative analysis of the number of corrosion inhibitor in the microstructure of the sealant cut before and after the exposure of samples in the salt fog chamber.

Keywords: рolymers, polysulfide sealant, corrosion inhibitors, structure, mass change, elemental analysis

Reference List

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21. Makushchenko I.S., Kozlov I.А., Smirnov D.N., Kurshev E.V., Lonskii S.L. Influence of cor-rosion inhibitors on the microstructure and vulcanization kinetics of polisulfide sealant. Trudy VIAM, 2024, no. 4 (134), paper no. 09. Available at: http://www.viam-works.ru (accessed: October 10, 2024). DOI: 10.18577/2307-6046-2024-0-4-123-132.

Full version

11.

DOI: 10.18577/2713-0193-2025-0-2-137-146

UDC: 66.017

D.S. Skorobogatko¹, A.N. Golovkov¹, I.I. Kudinov¹, S.I. Kulichkova¹

COMPARISON OF THE BASIC PHYSICAL PARAMETERS OF PENETRATING LIQUIDS USED IN PENETRANT TESTING DEFECTOSCOPY

The main physical parameters of penetrating liquids (penetrants) affecting the depth and filling rate of surface defects are investigated. The lying drop method and the stalagmometric method quantified such parameters as the surface tension and the equilibrium wetting angle of eight different penetrants of domestic and foreign production on the surface of the EP718 alloy. Various methods are considered that allow obtaining experimental data for calculating the time and depth of filling a surface defect.

Keywords: non-destructive testing, penetrant testing, penetrating liquids, metal wetting, equilibrium contact angle, surface tension of penetrants

Reference List

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2. Skorobogatko D.S., Golovkov A.N., Kudinov I.I., Kulichkova S.I. Revisiting the ecotoxicity and efficiency of different classes of industrial nonionic surfaces used for cleaning metal surfaces in the process of capillary control of details of the aviation technology (review). Aviation materials and technologies, 2021, no. 4 (65), paper no. 11. Available at: http://www.journal.viam.ru (accessed: December 24, 2021). DOI: 10.18577/2713-0193-2021-0-4-98-106.
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25. Savitskiy R.S., Sudin Yu.I. Evaluation of the effect of antiadhesion composition on the free surface energy of carbon fiber-reinforced plastics. Trudy VIAM, 2023, no. 3 (121), paper no. 04. Available at: http://www.viam-works.ru (accessed: October 10, 2024). DOI: 10.18577/2307-6046-2023-0-3-39-47.
26. Skorobogatko D.S., Golovkov A.N., Kudinov I.I., Kulichkova S.I. Evaluation of efficiency of using water washing solutions based on different classes of surfactants for cleaning metal surfaces before carrying out capillary fluorescent penetrant testing. Aviation materials and technologies, 2023, no. 1 (70), paper no. 11. Available at: http://www.journal.viam.ru (accessed: October 10, 2024). DOI: 10.18577/2713-0193-2023-0-1-137-147.

Full version

12.

DOI: 10.18577/2713-0193-2025-0-2-147-162

UDC: 533.9.082.5

D.N. Kozlov¹, V.V. Smirnov¹, V.I. Fabelinsky¹

COHERENT ANTI-STOKES RAMAN SPECTROSCOPY AS A METHOD OF NON-CONTACT MEASUREMENT OF GAS TEMPERATURE UP TO 6000 °

The article provides a brief overview of the results of investigations carried out primarily by employees of Prokhorov General Physics Institute of the Russian Academy of Sciences. Measurements of temperatures of gaseous media – up to 6000 °C, including flames and flows, were carried out using a non-contact and non-intrusive nanosecond laser spectroscopy of coherent anti-Stokes Raman scattering (CARS). These measurements are of interest from the point of view of testing new materials for the aerospace industry. The article describes physical principles and features of the measurement technique, the necessary equipment and its parameters.

Keywords: non-contact measurements of high temperatures in gases, high temperature testing of materials, laser spectroscopy, coherent anti-Stokes Raman scattering, CARS spectroscopy

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Full version

Aviation materials and technologies

Scientific-technical journal ISSN 2713-0193

ARCHIVE

Aviation materials and technologies №2, 2025

Contents

Heat-resistant alloys and steels

Light-metal alloys

Polymer materials

Composite materials

Protective and functional coatings

Material tests

FEATURES OF PRODUCTION OF LARGE CASTING TURBINE BLADES BY DIRECTIONAL CRYSTALLIZATION OF NICKEL CORROSION RESISTЕNT SUPERALLOY

INTERMETALLIC COMPOUND Ti₂AlNb – PROMISING MATERIAL FOR AVIATION AND SPACE TECHNOLOGY Part 4. Fracture toughness of Ti₂AlNb alloys

NUMERICAL SIMULATIONS OF THE PROCESSES INDUCED BY LASER SHOCK PEENING IN AMg6 ALUMINUM ALLOY

EFFECT OF ROUGHNESS ON SURFACE-ENERGY CHARACTERISTICS AND WETTING PROPERTIES OF FIBERGLASS

THE ROLE OF TEMPERATURE-TIME CURING CONDITIONS IN THE FORMATION OF UNIDIRECTIONAL AND EQUALLY STRONG CARBON FIBER PLASTICS PROPERTIES

CHANGES IN THE GLASS TRANSITION TEMPERATURE AND α-TRANSITION BOUNDARIES OF NANOMODIFIED CYANETER BINDING CARBON FIBER UNDER CLIMATIC INFLUENCES

EFFECT OF CO-DOPED OF CeO2, Y2O3 ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF CERAMIC SPINEL MgAl2O4

MICROSTRUCTURE AND FUNCTIONAL PROPERTIES OF BULK SAMPLES MADE FROM W–Ni–Cu PSEUDOALLOY BY COLD ISOSTATIC PRESSURE

INCREASE OF STRENGTH CHARACTERISTICS OF COMPOSITE MATERIAL ON THE BASIS OF UHMWPE FABRIC BY MEANS OF MODIFICATION WITH CCP PLASMA OF LOW-PRESSURE DISCHARGE

STUDY OF THE MICROSTRUCTURE AND DISTRIBUTION OF CORROSION INHIBITORS IN POLYSULFIDE SEALANT

COMPARISON OF THE BASIC PHYSICAL PARAMETERS OF PENETRATING LIQUIDS USED IN PENETRANT TESTING DEFECTOSCOPY

COHERENT ANTI-STOKES RAMAN SPECTROSCOPY AS A METHOD OF NON-CONTACT MEASUREMENT OF GAS TEMPERATURE UP TO 6000 °

ARCHIVE

Aviation materials and technologies №2, 2025

Contents

Heat-resistant alloys and steels

Light-metal alloys

Polymer materials

Composite materials

Protective and functional coatings

Material tests

FEATURES OF PRODUCTION OF LARGE CASTING TURBINE BLADES BY DIRECTIONAL CRYSTALLIZATION OF NICKEL CORROSION RESISTЕNT SUPERALLOY

INTERMETALLIC COMPOUND Ti2AlNb – PROMISING MATERIAL FOR AVIATION AND SPACE TECHNOLOGY Part 4. Fracture toughness of Ti2AlNb alloys

NUMERICAL SIMULATIONS OF THE PROCESSES INDUCED BY LASER SHOCK PEENING IN AMg6 ALUMINUM ALLOY

EFFECT OF ROUGHNESS ON SURFACE-ENERGY CHARACTERISTICS AND WETTING PROPERTIES OF FIBERGLASS

THE ROLE OF TEMPERATURE-TIME CURING CONDITIONS IN THE FORMATION OF UNIDIRECTIONAL AND EQUALLY STRONG CARBON FIBER PLASTICS PROPERTIES

CHANGES IN THE GLASS TRANSITION TEMPERATURE AND α-TRANSITION BOUNDARIES OF NANOMODIFIED CYANETER BINDING CARBON FIBER UNDER CLIMATIC INFLUENCES

EFFECT OF CO-DOPED OF CeO2, Y2O3 ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF CERAMIC SPINEL MgAl2O4

MICROSTRUCTURE AND FUNCTIONAL PROPERTIES OF BULK SAMPLES MADE FROM W–Ni–Cu PSEUDOALLOY BY COLD ISOSTATIC PRESSURE

INCREASE OF STRENGTH CHARACTERISTICS OF COMPOSITE MATERIAL ON THE BASIS OF UHMWPE FABRIC BY MEANS OF MODIFICATION WITH CCP PLASMA OF LOW-PRESSURE DISCHARGE

STUDY OF THE MICROSTRUCTURE AND DISTRIBUTION OF CORROSION INHIBITORS IN POLYSULFIDE SEALANT

COMPARISON OF THE BASIC PHYSICAL PARAMETERS OF PENETRATING LIQUIDS USED IN PENETRANT TESTING DEFECTOSCOPY

COHERENT ANTI-STOKES RAMAN SPECTROSCOPY AS A METHOD OF NON-CONTACT MEASUREMENT OF GAS TEMPERATURE UP TO 6000 °

INTERMETALLIC COMPOUND Ti₂AlNb – PROMISING MATERIAL FOR AVIATION AND SPACE TECHNOLOGY Part 4. Fracture toughness of Ti₂AlNb alloys