INFLUENCE OF THERMAL POST-TREATMENT ON THE TEXTURE AND ANISOTROPY OF MECHANICAL PROPERTIES IN THE Cu–Cr CONSTRUCTION ALLOY MANUFACTURED BY LASER POWDER BED FUSION

Compact specimens of a low-alloy copper alloy of the composition Cu–Cr with a relative density of 99.8 %. The influence of hot isostatic pressing and its combination with quenching and aging on the structure evolution of synthesized copper alloy samples. After gasostatic post-treatment of the synthesized samples, followed by quenching and aging, highly dispersed Cr(Cu) particles precipitated from the copper matrix, which led to an increase in tensile strength. Anisotropy was evaluated under tension of vertical and horizontal specimens after various types of post-processing.

Keywords: copper alloys, precipitation hardening, laser powder bed fusion, texture, anisotropy, mechanical properties

Reference List

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Full version

DOI: 10.18577/2713-0193-2022-0-1-17-29

UDC: 621.791.722

A.V. Sviridov¹, A.A. Skupov¹, A.N. Afanasev-Khodykin¹, E.V. Golev¹

SPECIAL ASPECTS OF MANUFACTURING OF FIXED JOINTS FROM SYNTHESIZED MATERIAL EP648

The paper studies the effect of electron-beam welding modes on the structure and mechanical properties of workpiece joints obtained by selective laser melting metal-powder composition of EP648 alloy. The technological characteristics of serial brazing alloys of grades VPr4, VPr11-40N, VPr42, VPr50, VPr24 and the strength of joints at elevated temperatures during soldering of the EP648-PS alloy have been determined. We also studied the feasibility of using vacuum heat treatment before brazing the EP648 synthesized material and homogenizing heat treatment after it.

Keywords: electron beam welding, contact welding, brazing, heat-resistant nickel alloys, additive technologies, structure, mechanical properties

Reference List

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Kablov E.N. Innovative developments of FSUE «VIAM» SSC of RF on realization of «Strategic directions of the development of materials and technologies of their processing for the period until 2030». Aviacionnye materialy i tehnologii, 2015, no. 1 (34), pp. 3–33. DOI: 10.18577/2071-9140-2015-0-1-3-33.
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Full version

DOI: 10.18577/2713-0193-2022-0-1-30-40

UDC: 669.295

V.A. Duyunova¹, M.S. Oglodkov¹, S.V. Putyrskiy¹, A.S. Kochetkov¹, O.V. Zueva¹

MODERN TECHNOLOGIES FOR MELTING TITANIUM ALLOY INGOTS (review)

The paper considers the traditional and promising technological schemes in the field of production of titanium alloy ingots for the aviation industry. The paper analyses the main advantages and disadvantages of individual technological schemes and provides methods for minimizing the risks of negative consequences. It concludes that it is necessary to update the industry regulatory documents that specify the permissible technologies for the production of ingots from titanium alloys of aviation quality.

Keywords: titanium alloy ingots, electron beam melting, skull melting, electron beam melting, vacuum arc melting

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Full version

DOI: 10.18577/2713-0193-2022-0-1-41-50

UDC: 678.8

A.E. Sorokin¹, M.S. Ivanov¹, V.A. Sagomonova¹

THERMOPLASTIC POLYMER COMPOSITE MATERIALS BASED ON POLYETHERETHERKETONES OF VARIOUS MANUFACTURERS

The paper examines four brands of polyetheretherketones of foreign and domestic production as binders for thermoplastic carbon plastics and estimates their main characteristics. Two polymer composite materials (PCM) manufacturing technologies have been tested – a film and a prepreg. It has been determined that prepreg technology makes it possible to produce carbon plastics with higher mechanical characteristics. The influence of the melt flow rate of a thermoplastic binder on the properties of PCM was evaluated and it was defined that powdered polyetheretherketones with low fluidity do not allow obtaining carbon plastics with a high level of mechanical properties.

Keywords: polyetheretherketone, thermoplastic, prepreg, carbon fiber reinforced plastic

Reference List

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Full version

DOI: 10.18577/2713-0193-2022-0-1-51-64

UDC: 691.175.2

P.N. Tarasova¹, S.A. Sleptsova¹, S. Laukkanen¹, A.A. Dyakonov¹

SEALING MATERIALS BASED ON POLYTETRAFLUOROETHYLENE FOR AVIATION PRODUCTS

The paper studies the effect of mechanically activated serpentine and magnesium spinel on the deformation-strength and tribotechnical characteristics and structure of polytetrafluoroethylene (PTFE). It has been determined that with the simultaneous introduction of fillers, an increase in wear resistance is observed up to 1125 times while maintaining and even slightly increasing the deformation and strength characteristics of the PTFE. It has been concluded that filler particles contribute to a change in the supramolecular structure of the PTFE, and also affect the formation of a protective secondary structure on the friction surface with the effect of solid lubrication. The developed materials can be used as parts of pneumatic-, hydro- and fuel systems for arctic and aviation equipment.

Keywords: polytetrafluoroethylene, serpentine, magnesium spinel, wear resistance, structure, friction surface, tribochemical processes

Reference List

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Full version

DOI: 10.18577/2713-0193-2022-0-1-65-77

UDC: 621.763

V.A. Duyunova¹, N.Yu. Serebrennikova¹, Yu.N. Nefedova¹, V.V. Sidelnikov¹, A.V. Somov¹

METHODS OF FORMING METAL-POLYMER COMPOSITE MATERIALS (review)

Fiber-laminated metal materials – as a class of metal-polymer composite materials, in which both metals and composites are used, have shown great prospects as lightweight structural materials in the transport industry. In this regard, technologies for the production of such materials and production of parts from them are of increasing interest to researchers. The review evaluates various aspects of the current state of researches and problems associated with such materials and the technologies of their shaping, and shows the prospects for their further development.

Keywords: metal-polymer composite materials, methods of forming, aluminum-fiberglass, GLARE, deformation

Reference List

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22. Lavrov A.V., Erasov V.S., Podzhivotov N.Yu., Avtaev V.V. Optimization of structure of hybrid composition materials for aircraft. Trudy VIAM, 2016, no. 11 (47), paper no. 07. Available at: http://www.viam-works.ru (accessed: May 28, 2021). DOI: 10.18577/2307-6046-2016-0-11-7-7.
23. Antipov V.V., Serebrennikova N.Yu., Nefedova Yu.N., Kozlova O.Yu., Panteleev M.D., Osipov N.N., Klychеv A.V. Manufacturing capability of Al–Li 1441 alloy details. Trudy VIAM, 2018, no. 10 (70), paper no. 03 Available at: http://www.viam-works.ru (accessed: May 28, 2021). DOI: 10.18577/2307-6046- 2018-0-10-17-26.

Full version

DOI: 10.18577/2713-0193-2022-0-1-78-91

UDC: 621.78

E.N. Kablov¹, K.M. Khmeleva¹, S.V. Zavarzin¹, I.A. Kozlov¹, S.L. Lonskii¹

THE EFFECT OF HEAT TREATMENT ON THE CHARACTERISTICS OF ALUMINIUM-ZINC COATINGS OBTAINED BY THE COLD SPRAY METHOD

A study was made of the influence of temperature and duration of heat treatment on the formation of diffusion zinc, aluminum and aluminum-zinc coatings. It is shown that at a heat treatment temperature of 400 °C, a three-phase structure in zinc coating is formed. Mutual diffusion occurs on samples with an aluminium-zinc coating with the formation of Al–Zn alloy, samples with an aluminum coating do not undergo structural changes under the studied heat treatment modes. According to the results of corrosion studies it has been revealed that in terms of their properties, mixed aluminum-zinc coatings are closer to the zinc-coated sample than to the aluminum-coated sample.

Keywords: thermal diffusion coatings, galvanizing, alitation, corrosion, protective coatings, cold spray

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Full version

DOI: 10.18577/2713-0193-2022-0-1-92-109

UDC: 534.222.2:621.793.79

I.S. Batraev¹, D.K. Rybin¹, K.V. Ivanyuk¹, V.Yu. Ulianitsky¹, A.A. Shtertser¹

WEAR-RESISTANT DETONATION COATINGS BASED ON TUNGSTEN CARBIDE FOR AVIATION PRODUCTS

The paper presents the results of a systematic study of detonation spraying of wear-resistant coatings from composites based on tungsten carbide used for hardening parts of aircraft vehicles. Using the LIH computer code the spraying modes were optimized and coatings from powders of domestic and foreign manufacturers were sprayed by the CCDS2000 plant. We measured the hardness, porosity, wear resistance and adhesion of obtained coatings and made a comparative characterization of residual stresses. The influence of spraying distance in the range from 50 to 400 mm and the angle of inclination of the treated surface up to 60 degrees on the quality of the coating was studied. Coatings with adhesion not less than 180 MPa and wear resistance characterized by specific wear less than 1.0 mm3/1000 rpm by ASTM G65 standard have been obtained which exceeds ten times the abrasion resistance of the VT20 titanium alloy.

Keywords: detonation spraying, wear-resistant coatings, microstructure, adhesion, residual stresses

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Fuel-oxidant mixture for detonation gun flame-plating: pat. US 4902539; field 4.02.88, publ. 20.02.90.
Tillmann W., Hagen L., Luo W. Process parameter settings and their effect on residual stresses in WC/W2C reinforced iron-based arc sprayed coatings. Coatings, 2017, vol. 7, is. 8. P. 125. DOI: 10.3390/coatings7080125.

Full version

DOI: 10.18577/2713-0193-2022-0-1-110-119

UDC: 629.7.023.222

Yu.I. Merkulova¹, V.A. Kuznetsova¹, E.N. Kodachenko¹, V.G. Zheleznyak¹

STUDY OF THE INFLUENCE OF THE PRIMER LAYER’S CHEMICAL NATURE ON THE PROPERTIES OF THE COATING SYSTEM BASED ON FLUOROPOLYURETHANE ENAMEL

The paper examines the properties of paint coatings’ systems based on fluoropolyurethane enamel and primers of various chemical nature in the initial state and after exposure to aging factors. It has been determined that the chemical nature of the primer layer during the formation of a coating system using fluoropolyurethane enamel affects not only the adhesive properties, but also physical and mechanical properties of the coating system both in the initial state and after exposure to various aging factors. It has been shown that coating systems with the use of epoxy primers, including those modified with nitrile butanediene rubber, have the best properties.

Keywords: epoxy primers, acrylic primers, paints and varnishes, fluoropolyurethane enamel, atmospheric resistance, adhesion, water absorption

Reference List

Kablov E.N., Petrova A.P. History of aviation materials science. VIAM – 75 years of search, creativity, discoveries. Moscow: Nauka, 2007, 343 p.
Yakovlev A.D., Yakovlev S.A. Functional coatings. St. Petersburg: Khimizdat, 2016, 272 p.
Chebotarevsky V.V., Kondrashov E.K. Coating technology in mechanical engineering. Moscow: Mashinostroenie, 1978, 295 p.
Kablov E.N., Semenova L.V., Eskov A.A., Lebedeva T.A. Complex systems of paint and varnish coatings for the protection of metal polymer composite materials, as well as their contact compounds from the impact of aggressive factors. Lakokrasochnye materialy i ikh primeneniye, 2016, no. 6, pp. 32–35.
Kablov E.N., Startsev O.V., Medvedev I.M. Review of international experience on corrosion and corrosion protection. Aviacionnye materialy i tehnologii, 2015, no. 2 (35), pp. 76–87. DOI: 10.18577/2071-9140-2015-0-2-76-87.
Eskov A.A., Lebedeva T.A., Belova M.V. Paint-and-lacquer materials with lowered content of volatile organic compounds (review). Trudy VIAM, 2015, no. 6, paper no. 08. Available at: http://www.viam-works.ru (accessed: June 7, 2021). DOI: 10.18577/2307-6046-2015-0-6-8-8.
Voitovich V.A. Paints and varnishes with fluorinated components. Lakokrasochnyye materialy: novinki otrasli, 2013, no. 4, pp. 23–27.
Kuznetsova V.A., Zheleznyak V.G., Baranova N.V., Lebedeva N.N.Influence of hardener ОС-17 on exploiting properties of the var-nish covering УР-231. Trudy VIAM, 2018, no. 6 (66), paper no. 08. Available at: http://www.viam-works.ru (accessed: June 7, 2021). DOI: 10.18577/2307-6046-2018-0-6-68-76.
Beider E.Ya., Donskoi A.A., ZhelezinaG.F., Kondrashov E.K., Sytyj Yu.V., Surnin E.G. Experience in the use of fluoropolymer materials in the aviation industry. Rossiyskiy khimicheskiy zhurnal, 2008, vol. LII, no. 3, pp. 30–44.
Mitrofanova S.E. Heat resistance of polymer-based coatings and ways to increase it. Vestnik Kazanskogo tekhnologicheskogo universiteta, 2014, vol. 17, is. 23, pp. 180–181.
Rakova T.M., Kozlova A.A., Nefedov N.I., Laptev A.B. The study of influence organic and inorganic corrosion inhibitors on the stress-corrosion cracking high-strength steels. Trudy VIAM, 2017, no. 6 (54), paper no. 12. Available at: http://www.viam-works.ru (accessed: June 7, 2021). DOI: 10.18577/2307-6046-2017-0-6-12-12.
Merkulova Yu.I., Kuznetsova V.A., Novikova T.A. Investigation of properties of coating system based on fluorine polyurethane enamel and primer with low toxical pigment content. Trudy VIAM, 2019, no. 5 (77), paper no. 08. Available at: http://www.viam-works.ru. (accessed: June 7, 2021). DOI: 10.18577/2307-6046-2019-0-5-68-75.
Zheleznyak V.G. Modern paint and varnish materials for use in aviation equipment products. Trudy VIAM, 2019, no. 5 (77), paper no. 07. Available at: http://www.viam-works.ru. (accessed: June 7, 2021). DOI: 10.18577/2307-6046-2019-0-5-62-67.
Kondrashov E.K. Paint and varnish materials and coatings based on them in mechanical engineering. Moscow: Paint-Media, 2021, 256 p.
Kondrashov E.K., Vladimirsky V.N., Karimova S.A., Ofitserova M.G., Pavlovskaya T.G., Filimonova G.I. Perspective technology for the repair of protective coatings. Aviacionnye materialy i tehnologii, 2002, is. 1: Repair technologies in the aircraft industry. pp. 83–85.
Kondrashov E.K., Kuznetsova V.A., Lebedeva T.A., Semenova L.V. The main directions of improving the operational, technological and environmental characteristics of paint coatings for aviation equipment. Rossiyskiy khimicheskiy zhurnal, 2010, vol. LIV, no. 1, pp. 96–102.

Full version

10.

DOI: 10.18577/2713-0193-2022-0-1-120-128

UDC: 629.7.023.222

V.G. Zheleznyak¹, A.S. Serdcelyubova¹, Yu.I. Merkulova¹, P.V. Skivko¹

PAINT COATING SYSTEM BASED ON POLYURETHANE ENAMEL FOR PROTECTING HEATED FRONTAL SURFACES OF AVIATION PRODUCTS

The paper presents the results of studies of paint coatings system based on natural drying polyurethane enamel in the initial state and after accelerated climatic tests. It has been determined that the use of an epoxy-rubber primer provides the coating with high resistance to erosion wear, both in the initial state and after various aging factors, as well as a high level of protection against corrosion of the aluminum alloy. It has been defined that exposure to elevated temperatures has a positive effect on the erosion resistance of paint and varnish systems.

Keywords: primer, enamel, erosion resistance, coating system, weather resistance, polyurethane enamel

Reference List

Kablov E.N. Innovative developments of FSUE «VIAM» SSC of RF on realization of «Strategic directions of the development of materials and technologies of their processing for the period until 2030». Aviacionnye materialy i tehnologii, 2015, no. 1 (34), pp. 3–33. DOI: 10.18577/2071-9140-2015-0-1-3-33.
Kablov E.N. The main directions of development of materials for aerospace technology of the XXI century. Perspektivnye materialy, 2000, no. 3, pp. 27–36.
Kablov E.N. Structural and functional materials – the basis of the economic and scientific and technical development of Russia. Voprosy materialovedeniya, 2006, no. 1, pp. 64–67.
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Kuznetsova V.A., Shapovalov G.G. Tendencies of development of the erosion-resistant coatings (review. Trudy VIAM, 2018, no. 11 (71), paper no. 09. Available at: http://www.viam-works.ru (accessed: July 7, 2021). DOI: 10.18577/2307-6046-2018-0-11-74-85.
Kondrashov E.K., Lebedeva T.A. Erosion-resistant coatings for the protection of polymer composite materials. Aviacionnye materialy i tehnologii, is.: Paint and varnish materials and coatings, 2003, pp. 57–58.
Kondrashov E.K. Erosion-resistant radio-transparent enamel VE-14. Aviatsionnaya promyshlennost, 1976, no. 1, pp. 67–68.
Kondrashov E.K., Naidenov N.D.Erosion resistant paint coverings of aviation purpose. Part 1. Erosion resistant paint coatings based on epoxy and polyurethane films forming (review). Trudy VIAM, 2020, no. 2 (86), paper no. 09. Available at: http://www.viam-works.ru (accessed: July 7, 2021). DOI: 10.18577/2307-6046-2020-0-2-81-90.
Kondrashov E.K., Naidenov N.D.Erosion-resistant paint and varnish coatings for aviation purposes. Part 2. Elastomeric erosion resistant radio-transparent coatings (review). Trudy VIAM, 2020, no. 3 (87), paper no. 10. Available at: http://www.viam-works.ru (accessed: July 7, 2021). DOI: 10.18577/2307-6046-2020-0-3-94-101.
Kondrashov E.K., Vladimirsky V.N., Beider E.Ya. Erosion resistant coatings. Moscow: Khimiya, 1989, 135 p.
Kondrashov E.K. Paint and varnish materials and coatings based on them in mechanical engineering. Moscow: Paint-Media, 2021, 256 p.
Zheleznyak V.G. Modern paint and varnish materials for use in aviation equipment products. Trudy VIAM, 2019, no. 5 (77), paper no. 07. Available at: http://www.viam-works.ru. (accessed: July 7, 2021). DOI: 10.18577/2307-6046-2019-0-5-62-67.
Beider E.Ya., DonskoyA.A., Zhelezina G.F., KondrashovE.K., Sytyj Yu.V., Surnin E.G. Experience in the use of fluoropolymer materials in the aviation industry. Rossiyskiy khimicheskiy zhurnal, 2008, vol. LII, no. 3, pp. 30–44.
Voitovich V.A. Paints and varnishes with fluorinated components. Lakokrasochnyye materialy: novinki otrasli, 2013, no. 4, pp. 23–27.

Full version

11.

DOI: 10.18577/2713-0193-2022-0-1-129-142

UDC: 620.165.79

V.S. Erasov¹, E.I. Oreshko¹, A.N. Lutsenko¹

MULTILEVEL LARGE-SCALE COMPLEX RESEARCH OF DEFORMATION OF METAL MATERIALS

The paper considers the theoretical and experimental questions connected with researches of elastic and plastic deformation of metal materials. The article shows that joint multilevel large-scale study performed by physics-mechanics and material engineers of the patterns connecting characteristics of stress-strain state with parameters of a structural condition of a metal material will allow to develop modern physical and mathematical models of a material. For this purpose in-depth study of the shift deformations forming plastic properties of a material and processes formation of defects and a new free surface is necessary. The paper presents the examples of such a research, and provides methods of analysis of structure and physical and mechanical characteristics at different structural levels of a polycrystalline metal material.

Keywords: strength, mechanical properties, stresses, deformation, calculation, deformation curve

Reference List

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27. Erasov V.S., Oreshko E.I. Poisson ratio and poisson force. Aviacionnye materialy i tehnologii, 2018, no. 4 (53), pp. 79–86. DOI: 10.18577/2071-9140-2018-0-4-79-86.
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Full version

12.

DOI: 10.18577/2713-0193-2022-0-1-143-152

UDC: 543.6

F.N. Karachevtsev¹, R.M. Dvoretskov¹, T.N. Zagvozdkina¹

DETERMINATION OF SILVER IN ALUMINUM ALLOYS BY ATOMIC EMISSION SPECTROMETRY WITH INDUCTIVELY COUPLED PLASMA

The paper provides a technique for the determination of silver by inductively coupled plasma atomic emission spectrometry in aluminum alloys. Analytical lines of silver free from significant spectral overlaps have been selected. The sample preparation method was selected, that is dissolution in concentrated nitric acid. The metrological characteristics of the technique were examined: for silver content from 0.1 to 0.7 % (by mass) the accuracy indicator is 4 % rel., which fully ensures the control of the silver content in products made of such alloys as B-1213, B-1469, B-1480, B-1481.

Keywords: measurement technique, aluminum alloys, atomic emission spectrometry, inductively coupled plasma, silver

Reference List

1. Antipov V.V., Klochkova Yu.Yu., Romanenko V.A. Modern aluminum and aluminum-lithium alloys. Aviacionnye materialy i tehnologii, 2017, no. S, pp. 195–211. DOI: 10.18577/2107-9140-2017-0-S-195-211.
2. Ivanova A.O., Vahromov R.O., Grigor'ev M.V., Senatorova O.G. Effect of small additive of silver on structure and properties of Al–Cu–Mg alloys. Trudy VIAM, 2014, no. 10, paper no. 01. Available at: http://www.viam-works.ru (accessed: June 25, 2021). DOI: 10.18577/2307-6046-2014-0-10-1-1.
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5. Oglodkov M.S., Grigorev M.V., Pakhomkin S.I., Ryabova E.N. Research of influence of homogenizing modes on mechanical properties of large bars from aluminum-lithium alloys V-1481. Trudy VIAM, 2017, no. 8 (56), paper no. 01. Available at: http://www.viam-works.ru (accessed: June 25, 2021). DOI: 10.18577/2307-6046-2017-0-8-1-1.
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Full version

Aviation materials and technologies

Scientific-technical journal ISSN 2713-0193

ARCHIVE

Aviation materials and technologies №1, 2022

Contents

Heat-resistant alloys and steels

Light-metal alloys

Composite materials

Protective and functional coatings

Material tests

INFLUENCE OF THERMAL POST-TREATMENT ON THE TEXTURE AND ANISOTROPY OF MECHANICAL PROPERTIES IN THE Cu–Cr CONSTRUCTION ALLOY MANUFACTURED BY LASER POWDER BED FUSION

SPECIAL ASPECTS OF MANUFACTURING OF FIXED JOINTS FROM SYNTHESIZED MATERIAL EP648

MODERN TECHNOLOGIES FOR MELTING TITANIUM ALLOY INGOTS (review)

THERMOPLASTIC POLYMER COMPOSITE MATERIALS BASED ON POLYETHERETHERKETONES OF VARIOUS MANUFACTURERS

SEALING MATERIALS BASED ON POLYTETRAFLUOROETHYLENE FOR AVIATION PRODUCTS

METHODS OF FORMING METAL-POLYMER COMPOSITE MATERIALS (review)

THE EFFECT OF HEAT TREATMENT ON THE CHARACTERISTICS OF ALUMINIUM-ZINC COATINGS OBTAINED BY THE COLD SPRAY METHOD

WEAR-RESISTANT DETONATION COATINGS BASED ON TUNGSTEN CARBIDE FOR AVIATION PRODUCTS

STUDY OF THE INFLUENCE OF THE PRIMER LAYER’S CHEMICAL NATURE ON THE PROPERTIES OF THE COATING SYSTEM BASED ON FLUOROPOLYURETHANE ENAMEL

PAINT COATING SYSTEM BASED ON POLYURETHANE ENAMEL FOR PROTECTING HEATED FRONTAL SURFACES OF AVIATION PRODUCTS

MULTILEVEL LARGE-SCALE COMPLEX RESEARCH OF DEFORMATION OF METAL MATERIALS

DETERMINATION OF SILVER IN ALUMINUM ALLOYS BY ATOMIC EMISSION SPECTROMETRY WITH INDUCTIVELY COUPLED PLASMA