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dx.doi.org/ 10.18577/2307-6046-2025-0-5-3-24

УДК 669.245

Petrushin N.V., Svetlov I.L., Epishin A.I., Elyutin E.S.

DEVELOPMENT OF DIRECTIONAL SOLIDIFICATION METHOD TO SOLVE THE PROBLEMS OF PHYSICAL METALLURGY OF NICKEL- AND COBALT-BASED SUPERALLOYS. Part 1

The review considers behavior of components during segregation along the casting height when directional solidification is performed with a flat front and shows practical application of this technique to solve problems of physical metallurgy of nickel-based alloys. Such problems include precise determination of temperature and composition of peritectic and eutectic reactions in nickel-based alloys of the binary system Ni–Al; determination of the solubility of W and Re in the γʹ- and β-phases of nickel-based alloys of the ternary systems Ni–Al–W and Ni–Al–Re; the solubility of Re and Ru in the γʹ- and β-phases in the quaternary system Ni–Al–Re–Ru, determination of the lattice spacing and interdiffusion coefficients in the γ-solid solution of nickel in the binary system Ni–Re.

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Reference list

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dx.doi.org/ 10.18577/2307-6046-2025-0-5-25-37

УДК 669.295

Pavlova T.V., Kashapov O.S., Chuchman O.V., Goncharova L.J.

COMPARATIVE ANALYSIS OF MECHANICAL PROPERTIES OF THE MATERIAL OF VТ6 ALLOY FORGINGS, MANUFACTURED BY VARIOUS METHODS AND PRODUCTION CONDITIONS

The article presents the mechanical properties of blades forgings from VT6 alloy, manufactured using three methods – a bulk stamping followed by single-stage annealing; a combination of a high-temperature annealing stage with heating for calibration and subsequent aging, as well as the high-temperature thermomechanical treatment method, which consists of heating for stamping, stamping calibration followed by quenching in water and aging. Particular attention in the article is paid to the characteristics of plasticity and impact toughness, as well as fatigue strength, taking into account the current issues of ensuring the reliability of the material of the first stages of compressor blades of aircraft engines.

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Reference list

1. Duyunova V.A., Pavlova T.V., Kashapov O.S., Chuchman O.V. Fatigue strength of forgings from VT6 alloy for parts of gas turbine engines and aircrafts. Aviation materials and technologies, 2023, no. 2 (71), paper no. 02. Available at: http://www.journal.viam.ru (accessed: November 29, 2024). DOI: 10.18577/2713-0193-2023-0-2-23-35.
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14. Egorova Yu.B., Davydenko L.V., Chibisova E.V., Chelpanov A.V., Karataeva E.S. Prediction of mechanical properties of rods made of titanium alloy VT6 with different types of structure. Tekhnologiya legkikh splavov, 2022, no. 3, pp. 30–40.
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19. Seo S., Jung M., Park J. Microstructure Control for Enhancing the Combination of Strength and Elongation in Ti‒6Al‒4V through Heat Treatment. Metals, 2024, vol. 14, p. 985. DOI: 10.3390/met14090985.
20. Jadhav S., Powar A., Patil S. et al. Effect of volume fraction of alpha and transformed beta on the high cycle fatigue properties of bimodal Ti6Al4V alloy. 7th International Conference on Key Engineering Materials (ICKEM 2017). IOP Conf. Series: Materials Science and Engineering, 2017, vol. 201, pp. 1–6. DOI: 10.1088/1757-899X/201/1/012035.
21. Oglodkov M.S., Kashapov O.S., Kalashnikov V.S., Kondratieva A.R. Comparative analysis of the characteristics of domestic alloys VT8, VT8M, VT8M-1, VT9 and Ti6242S alloy (USA) as applied to high-pressure compressor blades of aircraft gas turbine engines. Aviation materials and technologies, 2024, no. 1 (74), paper no. 03. Available at: http://www.journal.viam.ru (accessed: December 07, 2024). DOI: 10.18577/2713-0193-2024-0-3-35-50.

dx.doi.org/ 10.18577/2307-6046-2025-0-5-38-50

УДК 669.018.95

Gvozdev S.S., Kurbatkina E.I., Shcherbakov E.M., Bogachev I.A.

FEATURES OF GRANULES SPHEROIDIZATION OF DIFFERENT FRACTIONS OF MOLYBDENUM-BASED HIGH-TEMPERATURE COMPOSITE MATERIAL

The article presents the results of research and development on basic technological synthesis parameters of Mo–Si–B system metal composite material (MCM) by EBM and SLS methods. Additionally, the paper provides the investigation of the mechanisms of interface formation and diffusion processes at the interface «matrix–strengthening agent» in the process of synthesis of blanks by EBM and SLS. The powders have been analyzed by scanning electron microscope imaging, the images from which show that the powder granules have a splinter shape.

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Reference list

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17. Benarieb I., Antipov V.V., Khasikov D.V., Oglodkov M.S., Savichev I.D., Kuznetsova P.E. Study of structure and properties of sparinly alloyed aluminum alloy of Al–Mg–Sc–Zr system, produced by selective laser melting. Aviation materials and technologies, 2023, no. 4 (73), paper no. 03. Available at: http://www.journal.viam.ru (accessed: October 25, 2024). DOI: 10.18577/2713-0193-2023-0-4-23-35.
18. Mazalov I.S., Mazalov P.B., Suhov D.I., Sulyanova E.A. Influence of hot isostatic pressing parameters on structure and properties of cobalt-based alloys obtained by selective laser melting. Aviation materials and technologies, 2021, no. 2 (63), paper no. 01. Available at: http://www.journal.viam.ru (accessed: October 25, 2024). DOI: 10.18577/2713-0193-2021-0-2-3-14.
19. Bobrovskiy A.P., Efimochkin I.Yu., Bolshakova A.N., Khudnev A.A. Production of spherical granules of a high-temperature metal composite material based on molybdenum. Trudy VIAM, 2022, no. 1 (107), paper no. 05. Available at: http://www.viam-works.ru (accessed: October 25, 2024). DOI: 10.18577/2307-6046-2022-0-1-44-52.
20. Berezina E.P., Nikiforov S.A., Gilmutdinov A.Kh. Numerical modeling of gas-powder flows of an installation for plasma spheroidization of metal powders. Matematicheskie metody v tekhnologiyakh i tekhnike, 2024, no. 3, pp. 55–60.

dx.doi.org/ 10.18577/2307-6046-2025-0-5-51-60

УДК 621.775.8

Valeev R.A., Serov M.M., Leschev N.E., Yaroshenko A.S.

FIXATION OF THE AMORPHOUS STATE IN ALLOYS Co–Cr–W SYSTEM UNDER THE INFLUENCE OF HIGH COOLING RATES

The article presents the results of the work carried out at the NRC «Kurchatov Institute» – VIAM Research Center on the application of the hanging melt droplet extraction method to obtain fibers from cobalt alloys of the Co–Cr–W system. The conducted studies have shown that during the quenching of the melt in alloys of the Co–Cr–W system, the amorphous state is fixed, while most of the structure of the obtained fibers is replaced by an amorphous phase. The justified modes of heat treatment providing crystallization of the amorphous phase are given. It is shown that after heat treatment, an increase in the amount of solid solutions based on Co occurs in the obtained samples.

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Reference list

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dx.doi.org/ 10.18577/2307-6046-2025-0-5- 61-75

УДК 665.939

Dubrovin I.M., Lopatina M.F., Isaev A.Yu., Starkov A.I.

MODERN AND PROSPECTIVE METHODS FOR PREPARING METAL AND POLYMER COMPOSITE SURFACES FOR BONDING WITH AVIATION-GRADE ADHESIVES

The article provides examples of the practical application of modern surface treatment methods for bonding, such as the use of a sacrificial layer during formation of polymer composite materials, sandblasting, plasma treatment, and other methods that contribute to enhancing strength of adhesive joints made of metallic materials and polymer composite materials in aircraft structures. The results of domestic and foreign researches aimed at developing advanced technologies for polymer composite materials surface preparation for bonding are presented.

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Reference list

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2. Kablov E.N. New generation materials and digital technologies for their processing. Vestnik Rossiyskoy akademii nauk, 2020, vol. 90, no. 4, pp. 331–334.
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4. Isaev A.Yu., Rubtsova E.V., Kotova E.V., Sutyagin M.N. Research of properties of glues and glue binding, made with use of modern domestic component base. Trudy VIAM, 2021, no. 3 (97), paper no. 05. Available at: http://www.viam-works.ru (accessed: September 22, 2024). DOI: 10.18577/2307-6046-2021-0-3-58-67.
5. Isaev A.Yu., Pavlyuk B.Ph., Petrova A.P., Lukina N.Ph., Balabanova O.S. Effect of modification of cold cured epoxy adhesives with elastomers on the resource strength of adhesive joint. Trudy VIAM, 2020, no. 9 (91), paper no. 03. Available at: http://www.viam-works.ru (accessed: September 21, 2024). DOI: 10.18577/2307-6046-2020-0-9-27-34.
6. Petrova A.P., Malysheva G.V. Adhesives, adhesive binders and adhesive prepregs: textbook. Ed. E.N. Kablov. Moscow: VIAM, 2017, 472 p.
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8. Shershak P.V., Yakovlev N.O., Shokin G.I., Kutsevich K.E., Popkova E.A. Evaluation method and factors influencing the bonding quality between face and honey-comb cores in floor and interior aircraft panels. Aviacionnye materialy i tehnologii, 2020, no. 2 (59), pp. 81–88. DOI: 10.18577/2071-9140-2020-0-2-81-88.
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13. Barannikov A.A., Postnov V.I., Veshkin E.A., Strelnikov S.V., Satdinov R.A. Use of atmospheric pressure plasma as a method for preparing the surface of polymer composite materials for bonding. Klei. Germetiki. Tekhnologii, 2021, no. 5, pp. 177–196.
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20. Jölly I., Schlögl S., Wolfahrt M. et al. Chemical functionalization of composite surfaces for improved structural bonded repairs. Composites Part B: Engineering, 2015, vol. 69, pp. 296–303.
21. Alyamovsky A.I., Zemtsova E.V., Kopyl N.I., Obyedkov M.L. Influence of various methods of surface preparation of carbon fiber reinforced plastics on the strength characteristics of adhesive joints. Kosmicheskaya tekhnika i tekhnologii, 2023, vol. 2, pp. 54–64.
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26. Barannikov A.A., Sudyin Yu.I., Veshkin E.A., Satdinov R.A. Determination of the permissible storage time of polymeric composite materials after surface treatment with atmospheric pressure plasma before bonding. Trudy VIAM, 2022, no. 5 (111), paper no. 03. Available at: http://www.viam-works.ru (accessed: July 15, 2024). DOI: 10.18577/2307-6046-2022-0-5-26-40.
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33. Almuhammadi K., Yudhanto A., Lubineau G. On the anisotropic behavior of electrodes for electrical-based monitoring of CFRP laminated composites. Polymer Composites, 2019, vol. 40 (5), pp. 2061–2066.
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38. Takeda T., Yasuoka T., Hoshi H. et al. Effectiveness of flame-based surface treatment for adhesive bonding of carbon fiber reinforced epoxy matrix composites. Composites Part A: Applied Science and Manufacturing, 2019, vol. 119, pp. 30–37.
39. Kinloch A.J. Adhesion and adhesives: Science and technology. Springer-Sci+Business Media, B.V., 1987, 441 p.
40. Jialanella G.L. Advances in bonding plastics. Advances in structural adhesive bonding. Woodhead Publishing Limited, 2010, pp. 237–264.
41. Baldan A. Adhesion phenomena in bonded joints. International Journal of Adhesion and Adhesives, 2012, vol. 38, pp. 95–116.
42. Tao R., Alfano M., Lubineau G. Laser-based surface patterning of composite plates for improved secondary adhesive bonding. Composites Part A: Applied Science and Manufacturing, 2018, vol. 109, pp. 84–94.
43. Prolongo S.G., Gude M.R., Del Rosario G., Ureña A. Surface pretreatments for composite joints: Study of surface profile by SEM image analysis. Journal of Adhesion Science and Technology, 2010, vol. 24 (11–12), pp. 1855–1867.
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45. Lee C.Y., Bae J.H., Kim T.Y. et al. Using silane-functionalized graphene oxides for enhancing the interfacial bonding strength of carbon/epoxy composites. Composites Part A: Applied Science and Manufacturing, 2015, vol. 75, pp. 11–17.

dx.doi.org/ 10.18577/2307-6046-2025-0-5-76-87

УДК 544.43

Sidorov D.V., Grunin А.А., Shavnev A.A.

RATE OF CHEMICAL REACTION OF FORMATION OF 1,2-DIMETHYLDISILENE FROM METHYLSILYLENE

The article observes a theoretical method of quantum chemistry that has been used to study the chemical reaction of 1,2-dimethyldisilene formation from methylsilylene. During the study the geometric parameters and thermodynamic characteristics of the structural isomers of 1,2-dimethyldisilene were determined. The study has defined that the reaction of 1,2-dimethyldisilene formation from methylsilylene is exothermic and occurs spontaneously at temperatures below 1570 K, at the same time the rate of the chemical reaction under study increases significantly with the decreasing of the temperature.

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Reference list

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33. Sidorov D.V., Kirilin A.D., Schavnev А.А., Melentev А.А., Flotskiy А.А., Grunin А.А. Transition state chemical reaction producing silaethylene from methylsilane. Trudy VIAM, 2022, no. 9 (115), paper no. 09. Available at: http://www.viam-works.ru (accessed: November 18, 2024). DOI: 10.18577/2307-6046-2022-0-9-111-120.
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dx.doi.org/ 10.18577/2307-6046-2025-0-5-88-98

УДК 620.1

Sevalnev G.S., Krasulya А.А.

STUDY OF ABRASIVE WEAR OF HIGH-CARBON IRON-BASED ALLOY WITH INCREASED NICKEL CONTENT AFTER ELECTROLESS BORIDING AT LOW TEMPERATURE

In the article the microstructure, phase composition and resistance of Ni-Resist cast iron to abrasive wear without treatment and after low-temperature electrolysis-free boriding were studied. The results of the study showed that boriding using the experimental composition made it possible to form a diffusion layer with a hardness of up to 1800 HV 0,1, to increase abrasive resistance at an attack angle of 30°, while increasing the attack angle to 60 and 90° has led to a decrease in abrasive resistance.

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Reference list

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dx.doi.org/ 10.18577/2307-6046-2025-0-5-99-111

УДК 667.6:535.6

Startsev V.O., Kogan A.M., Zeleneva T.O.

CLIMATE AGING OF PAINT COATING SYSTEMS Part 1. Effect of long-term exposure on color characteristics

The article provides information on the change in color distance and a reliable forecast model for this process during natural exposure of paint coating systems for 7 years in a moderately warm climate. It is revealed that the seasonality effect, previously detected based on data for 1 year of exposure, decreases after 3,5 years and is not observed after 5 years of exposure. It is proven that it is possible to reliably forecast changes in color characteristics for up to 7 years after analyzing experimental data for 5 years of natural exposure.

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Reference list

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dx.doi.org/ 10.18577/2307-6046-2025-0-5-112-120

УДК 620.1:678.8

Laptev A.B., Matishov G.G., Sadkov V.R., Nikolaev E.V., Kogan A.M.

THE WIND EFFECT ON THE HUMIDITY OF POLYMER COMPOSITE MATERIALS IN NATURAL CONDITIONS

The article considers the calculated dependencies of changes in the humidity and temperature in the volume and on the surface of a material sample under the influence of the wind. The study considers a case of the absence of free moisture on the surface. It is shown that the wind effect on the humidity of the surface is about affecting the surface temperature due to the viscous friction forces near the surface of the material sample. At the same time, free moisture in capillaries evaporates at a constant rate. Sorbed moisture, depending on the gradient of moisture concentration, temperature, and partial pressure of moisture in the bulk of the material, is removed at a decreasing rate.

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Reference list

1. Kablov E.N., Laptev A.B., Prokopenko A.N., Gulyaev A.I. Relaxation of polymeric composite materials under the prolonged action of static load and climate (review). Part 1. Binders. Aviation materials and technologies, 2021, no. 4 (65), paper no. 08. Available at: http://www.journal.viam.ru (accessed: May 10, 2024). DOI: 10.18577/2713-0193-2021-0-4-70-80.
2. Kablov E.N. New generation materials and digital technologies for their processing. Vestnik Rossiyskoy akademii nauk, 2020, vol. 90, no. 4, pp. 331–334.
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4. Veshkin E.A., Startsev V.O., Postnov V.I., Barannikov A.A. The climate impacts as the assessment of maintainability of products from carbon fiber. Trudy VIAM, 2019, no. 8 (80), paper no. 11. Available at: http://www.viam-works.ru (accessed: June 20, 2024). DOI: 10.18577/2307-6046-2019-0-8-98-108.
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10.

CONTENТS

Heat-resistant alloys and steels

Petrushin N.V., Svetlov I.L., Epishin A.I., Elyutin E.S.

Development of directional solidification method to solve the problems of physical metallurgy of nickel- and cobalt-based superalloys. Part 1

Light-metal alloys

Pavlova T.V., Kashapov O.S., Chuchman O.V., Goncharova L.Yu.

Comparative analysis of mechanical properties of the material of VT6 alloy forgings, manufactured by various methods and production conditions

Composite materials

Gvozdev S.S., Kurbatkina E.I., Shcherbakov E.M., Bogachyov I.A.

Features of granules spheroidization of different fractions of molybdenum-based high-temperature composite material

Valeev R.A., Serov M.M., Leshchev N.E., Yaroshenko A.S.

Fixation of the amorphous state in alloys Co–Cr–W system under the influence of high cooling rates

Dubrovin I.M., Lopatina M.F., Isaev A.Yu., Starkov A.I.

Modern and prospective methods for preparing metal and polymer composite surfaces for bonding with aviation-grade
adhesives

Protective and functional

coatings

Sidorov D.V., Grunin А.А., Schavnev А.А.

Rate of chemical reaction of formation of 1,2-dimethyldisilene from methylsilylene

Sevalnev G.S., Krasulya А.А.

Study of abrasive wear of high-carbon iron-based alloy with increased nickel content after electroless boriding at low temperature

Startsev V.O., Kogan A.M., Zeleneva T.O.

Climate aging of paint coating systems. Part 1. Effect of long-term exposure on color characteristics

Material tests

Laptev A.B., Matishov G.G., Sadkov V.R., Nikolaev E.V., Kogan A.M.

The wind effect on the humidity of polymer composite materials in natural conditions

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