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Aviation materials and technologies №4, 2020

Contents

  • A.G. Evgenov, S.V. Shurtakov, S.M. Prager, R.Yu. Malinin

    ON THE DEVELOPMENT OF A UNIVERSAL CALCULATION METHOD FOR ASSESSING THE DEGRADATION OF RECYCLED METAL POWDER MATERIALS, DEPENDING ON THE CYCLICITY OF USE IN THE SELECTIVE LASER MELTING PROCESS

    3-11
  • A.L. Yakovlev, A.A. Arislanov, S.V. Putyrskiy, N.A. Nochovnaya

    STUDY OF MECHANICAL PROPERTIES AND STRUCTURE OF LARGE-SIZED SEMI-FINISHED PRODUCTS MADE OF VT6ch TITANIUM ALLOY

    12-18
  • E.N. Kablov, G.S. Kulagina, G.F. Zhelezina, S.L. Lonskii, E.V. Kurshev

    MICROSTRUCTURE RESEARCH OF THE UNIDIRECTIONAL ORGANOPLASTIC BASED ON RUSAR-NT ARAMID FIBERS AND EPOXY-POLYSULFONE BINDER

    19-26
  • A.A. Shavnev, V.G. Babashov, N.M. Varrik

    CONTINUOUS FIBERS BASED ON ALUMINA (review)

    27-34
  • A.B. Laptev, L.I. Zakirova, M.L. Degovets

    PROPERTIES OF PROTECTIVE GALVANIC COATINGS FOR REPLACEMENT OF CADMIUM ON STEEL FIXING PARTS (review) Part 2. Hydrogen embrittlement and frictional characteristics

    35-40
  • O.G. Devoino, A.P. Pilipchuk

    SPECIFIC FEATURES OF GAS-FLAME SPRAYING OF ULTRA-HIGH MOLECULAR POLYETHYLENE ON PARA-AMID FABRIC

    41-46
  • E.N. Kablov, V.O. Startsev

    MEASUREMENT AND FORECASTING OF MATERIALS SAMPLES’ TEMPERATURE DURING WEATHERING IN DIFFERENT CLIMATIC ZONES

    47-58
  • V.S. Erasov, E.I. Oreshko

    FATIGUE TESTS OF METAL MATERIALS (review) Part 1. Main definitions, loading parameters, representation of results of tests

    59-70
  • D.Ya. Barinov, P.S. Marakhovskij, A.V. Zuev

    MATHEMATICAL MODELING OF DESTRUCTION OF FIBERGLASS-BASED THERMAL-PROTECTION MATERIAL 

    71-78
  • N.O. Iakovlev, A.A. Selivanov, I.V. Gulina, A.V. Grinevich

    REVISITING THE DURABILITY OF HINGED-BOLT CONNECTIONS

    79-85
  • M.G. Abramova

    REVISITING THE CONFIRMATION OF THE IDENTITY OF THE CORROSION DESTRUCTION MECHANISM OF ALUMINUM ALLOYS (review) Part 1. Atmospheric corrosion

    86-94
Содержание номера
1.

DOI: 10.18577/2071-9140-2020-0-4-3-11

UDC: 620.186

Pages:: 3-11

A.G. Evgenov1, S.V. Shurtakov1, S.M. Prager1, R.Yu. Malinin1

[1] Federal state unitary enterprise «All-Russian Scientific-Research Institute of Aviation Materials» of National Research Center «Kurchatov Institute»

ON THE DEVELOPMENT OF A UNIVERSAL CALCULATION METHOD FOR ASSESSING THE DEGRADATION OF RECYCLED METAL POWDER MATERIALS, DEPENDING ON THE CYCLICITY OF USE IN THE SELECTIVE LASER MELTING PROCESS

This article analyses foreign articles on the influence of the frequency of use on the level of impurities, technological characteristics of the powder in the SLM (DMLS) process and on the mechanical properties of the synthesized materials. A solution to the problem of developing a universal calculation method for evaluating degradation in the SLM process of recycled metal powder materials has been proposed. The algorithm includes the automatic correlation of the contamination factors with the corresponding exposure mode elements of each type of cross-section (contour, upskin, downskin, core) during measurement of the longitude of the laser path or the exposure duration of all elements that form the cross-section of a part.

Keywords: selective laser melting, oxidized powder, fractional composition, exposure, laser synthesis, contour, base metal, support structures.

Reference List

    1. Kriewall C.S., Sutton A.T., Karnati S. et al. Effects of Area Fraction and Part Spacing on Degradation of 304L Stainless Steel Powder in Selective Laser Melting. Solid Freeform Fabrication 2017: Proceedings of the 28th Annual International. Solid Freeform Fabrication Symposium – An Additive Manufacturing Conference Reviewed Paper, 2017, pp. 277–288.
    2. Powder Degradation in Serial Production. Available at: https://cdn2.hubspot.net/hubfs/6205315/carpenter_additive/image/Resource... (accessed: August 31, 2020).
    3. Sukal J., Palousek D., Koutny D. The effect of recycling powder steel on porosity and surface roughness of slm parts. Modern Machinery Science Journal, 2018, no. 5, pp. 2643–2647. DOI: 10.17973/MMSJ.2018_12_2018110.
    4. Cordova L., Campos M., Tinga T. Revealing the Effects of Powder Reuse for Selective Laser Melting by Powder Characterization. Journal of The Minerals, Metals & Materials Society, 2019, vol. 71, no. 3, pp. 1062–1072.
    5. Barclift M., Joshi S., Simpson T., Dickman C. Cost modeling and depreciation forreused powder feedstock in powder bed fusion additive manufacturing. Solid Freeform Fabrication 2017: Proceedings of the 28th Annual International. Solid Freeform Fabrication Symposium – An Additive Manufacturing Conference Reviewed Paper, 2017, pp. 2007–2028.
    6. Kablov E.N., Evgenov A.G., Mazalov I.S., Shurtakov S.V., Zaitsev D.V., Prager S.M. Evolution of structure and properties of high-chromium heat-resistant alloy VZh159, obtained by selective laser alloying. Part I. Materialovedeniye, 2019, no. 3, pp. 9–17. DOI: 10.31044/1684-579X-2019-0-3-9-17.
    7. Kablov E.N., Evgenov A.G., Mazalov I.S., Shurtakov S.V., Zaitsev D.V., Prager S.M. Evolution of structure and properties of high-chromium heat-resistant alloy VZh159, obtained by selective laser alloying. Part II. Materialovedeniye, 2019, no. 4, pp. 9–15. DOI: 10.31044/1684-579X-2019-0-4-9-15.
    8. Kablov E.N., Evgenov A.G., Mazalov I.S., Shurtakov S.V., Zaitsev D.V., Prager S.M. Structure and properties of EP648 and VZh159 alloys synthesized by SLS after simulation annealing. Materialovedeniye, 2020, no. 6, pp. 3–10. DOI: 10.31044/1684-579X-2020-0-6-3-10.
    9. Zavodov A.V., Petrushin N.V., Zaitsev D.V. Microstructure and phase composition of high-temperature alloy ZhS32 after selective laser alloying, vacuum heat treatment, and hot isostatic pressing. Pisma o materialakh, 2017, no. 7 (2), pp. 111–116.
    10. Raevskikh A.N., Chabina E.B., Petrushin N.V., Filonova E.V. Boundary between single-crystal substrate and received by selective laser melting alloy ZhS32-VI structural and phase changes after high temperatures and tension influence investigation. Trudy VIAM, 2019, no. 1 (73), paper no. 01. Available at: http://viam-works.ru (accessed: August 31, 2020). DOI: 10.18577/2307-6046-2019-0-1-3-12.
    11. Lukina E.A., Filonova E.V., Treninkov I.A. The microstructure and preferential crystallographic orientation of nickel superalloy, synthesized by SLM method, depending of the energy impact and heat treatment. Aviacionnye materialy i tehnologii, 2017, no. 1 (46), pp. 38–44. DOI: 10.18577/2071-9140-2017-0-1-38-44.
    12. Treninkov I.A., Zavodov A.V., Petrushin N.V. Research of crystal structure and microstructure of the ZhS32-VI nickel-base superalloy synthesized by selective laser fusion method, after high-temperature mechanical tests. Aviacionnye materialy i tehnologii, 2019, no. 1 (54), pp. 57–65. DOI: 10.18577/2071-9140-2019-0-1-57-65.
    13. Agapovichev A.V., Sotov A.V., Smelov V.G., Zaitsev I.O. Study of the structure and mechanical properties of samples obtained using the technology of selective laser alloying from titanium metal powder of VT6 grade. Materials of the IV Int. conf. «Additive Technologies: Present and Future» (Moscow, March 30, 2018). Moscow: VIAM, 2018, pp. 9–17.
    14. Yudin A.V., Beregovsky V.V., Svistunov E.I., Kunavin S.A. Investigations of structural materials obtained by selective laser melting on domestic equipment Meltmaster 3D-550. Materials of the V Int. conf. «Additive Technologies: Present and Future» (Moscow, March 22, 2019). Moscow: VIAM, 2019, pp. 416–430.
    15. Karpov M.I., Prokhorov D.V., Stroganova T.S., Gnesin B.A., Svetlov I.L. On the possibility of developing extra high-temperature alloys based on eutectic in the Nb – Nb2C system. Materials of the IV Int. conf. «Additive Technologies: Present and Future» (Moscow, March 30, 2018). Moscow: VIAM, 2018, pp. 363–364.
    16. Medvedev P.N., Gulyaev A.I. Analysis of the spa-tial distribution of cracks in a heat-resistant nickel alloy manufactured using SLM technology. Aviacionnye materialy i tehnologii, 2020, no. 1 (58), pp. 12–18. DOI: 10.18577/2071-9140-2020-0-1-12-18.
    17. 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.
    18. Tang H.P., Qian M., Liu N. et al. Effect of Powder Reuse Times on Additive Manufacturing of Ti–6Al–4V by Selective Electron Beam Melting. Journal of The Minerals, Metals & Materials Society,  2015, vol. 67, no. 3, pp. 555–563.
    19. Ardila L.C., Garciandia F., González-Díaz J.B. et al. Effect of IN718 Recycled Powder Reuse on Properties of Parts Manufactured by Means of Selective Laser Melting. Physics Procedia, 2014, vol. 56, pp. 99–107.
    20. Slotwinski J.A., Garboczi E.J., Stutzman P.E. et al. Characterization of metal powders used for additive manufacturing. Journal of Research of the National Institute of Standards and Technology, 2014, vol. 119, pp. 460–493.
    21. Ladewig A., Schlick G., Fisser M. et al. Influence of the shielding gas flow on the removal of process by-products in the selective laser melting process. Additive Manufacturing, 2016, vol. 10, pp. 1–9.
    22. Sutton A.T., Kriewall C.S., Leu M.C., Newkirk J.W. Characterization of Heat-Affected Powder Generated during the Selective Laser Melting of 304L Stainless Steel Powder. Solid Freeform Fabrication 2017: Proceedings of the 28th Annual International. Solid Freeform Fabrication Symposium – An Additive Manufacturing Conference Reviewed Paper, 2017, pp. 261–276.
    23. Guan K., Wang Z., Gao M. et al. Effects of processing parameters on tensile properties of selective laser melted 304 stainless steel. Materials and Design, 2013, vol. 50, pp. 581–586.
    24. Wright R.N., Flinn J.E., Korth G.E. et al. The microstructure and phase relationships in rapidly solidified type 304 stainless steel powders. Metallurgical Transactions: A. 1988, vol. 19. P. 2399–2405.
    25. Evgenov A.G., Shurtakov S.V., Prager S.M., Malinin R.Yu. Features of contamination of recycled powder material in the process of selective laser synthesis. Tekhnologiya metallov, 2018, no. 11, pp. 21–29.
    26. Chabina E.B., Evgenov A.G., Korolev V.A., Raevskikh A.N., Filonova E.V. Features of the layer-by-layer formation of the structure of products made of heat-resistant nickel alloys with selective laser alloying. Fundamental foundations of engineering sciences: collection of scientific-popular articles. Moscow, 2017, pp. 250–261.

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2.

DOI: 10.18577/2071-9140-2020-0-4-12-18

UDC: 669.295

Pages:: 12-18

A.L. Yakovlev1, A.A. Arislanov1, S.V. Putyrskiy1, N.A. Nochovnaya1

[1] Federal state unitary enterprise «All-Russian Scientific-Research Institute of Aviation Materials» of National Research Center «Kurchatov Institute»

STUDY OF MECHANICAL PROPERTIES AND STRUCTURE OF LARGE-SIZED SEMI-FINISHED PRODUCTS MADE OF VT6ch TITANIUM ALLOY

The article presents the results of a complex of studies (analysis of microstructure, as well as determination of mechanical properties under tension, impact strength (KCU), low-cycle fatigue (LCF), fracture toughness (K1с)) of large-sized forgings made of titanium alloy Vt6сh, providing for the final deformation in the (α+β)-region, as well as large-sized profiles and stamping made of titanium alloy Vt6сh, providing for the final deformation in the β-region.

A comparative analysis of the data obtained during the research shows the dependence of the mechanical properties of semi-finished products with plate-like structure on the size of the structural components – of primary β-grains and colonies of α-plates. This is especially noticeable for the characteristics of plasticity.

Keywords: titanium alloys, large-sized semi-finished products, deformation, mechanical properties, microstructure, heat treatment.

Reference List

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    2. Khorev A.I. The main scientific and practical directions for increasing the stability of the mechanical properties of (α + β) -titanium alloys of high and ultrahigh strength. Ti-2010 in the CIS. Ekaterinburg, 2010, pp. 227–235.

    3. Ilyin A.A., Kolachev B.A., Polkin I.S. Titanium alloys. Composition, structure, properties: reference book. Moscow: VILS-MATI, 2009, 520 p.

    4. Kablov E.N., Grinevich A.V., Erasov V.S. Strength characteristics of metallic aviation materials and their calculated values. 75 years. Aviacionnye materialy. Moscow: VIAM, 2007, pp. 370–379.

    5. Dzunovich D.A., Panin P.V., Lukina E.A., Shiryaev A.A. Heat treatment effect on structure and properties of welded large-dimensioned semi-finished products from VT23 titanium alloy. Trudy VIAM, 2018, no. 1 (61), paper no. 07. Available at: http://www.viam-works.ru (accessed: July 20, 2020). DOI: 10.18577/2307-6046-2018-0-1-7-7.

    6. Kablov E.N. What to make the future of? New generation materials, technologies for their creation and processing - the basis of innovations. Krylya Rodiny, 2016, no. 5, pp. 8–18.

    7. Arislanov A.A., Goncharova L.J., Nochovnaya N.А., Goncharov V.A. Prospects for the use of titanium alloys in laminated composite materials. Trudy VIAM, 2015, no. 10, paper no. 04. Available at: http://www.viam-works.ru (accessed: July 23, 2020). DOI: 10.18577/2307-6046-2015-0-10-4-4.

    8. Kablov E.N. VIAM: Continuation of the Path. Nauka v Rossii, 2012, no. 4, pp. 7–11.

    9. Putyrskiy S.V., Yakovlev A.L., Nochovnaya N.A., Krokhina V.A. Research of different heat treatment modes influence on properties of semi-finished products and welded joints from titanium alloy ВТ22М. Aviacionnye materialy i tehnologii, 2019, no. 1 (54), pp. 3–10. DOI: 10.18577/2071-9140-2019-0-1-3-10.

    10. 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.

    11. Dzunovich D.A., Alekseyev E.B., Panin P.V., Lukina E.A., Novak A.V. Structure and properties of sheet semi-finished products from various wrought intermetallic titanium alloys. Aviacionnye materialy i tehnologii, 2018, no. 2 (51), pp. 17–25. DOI: 10.18577/2071-9140-2018-0-2-17-25.

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    15. Inagaki I., Shirai Y., Takechi T., Ariyasu N. Application and Features of Titanium for the Aerospace Industry. Osaka: Nippon Steel & Sumitomo Metal, 2014, pp. 22–27.

    16. Peters M., Kumpfert J., Ward C.H., Leyens C. Titanium Alloys for Aerospace Applications. Advanced Engineering Materials, 2003, vol. 5, pp. 419–427.

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3.

DOI: 10.18577/2071-9140-2020-0-4-19-26

UDC: 678.83

Pages:: 19-26

E.N. Kablov1, G.S. Kulagina1, G.F. Zhelezina1, S.L. Lonskii1, E.V. Kurshev1

[1] Federal state unitary enterprise «All-Russian Scientific-Research Institute of Aviation Materials» of National Research Center «Kurchatov Institute»

MICROSTRUCTURE RESEARCH OF THE UNIDIRECTIONAL ORGANOPLASTIC BASED ON RUSAR-NT ARAMID FIBERS AND EPOXY-POLYSULFONE BINDER

This paper studies a polymer composite material - a unidirectional organoplastic based on Rusar-NT aramid fiber and a melt epoxy-polysulfone binder. Organoplastic has the following mechanical properties: tensile strength 2060 MPa, Young's modulus 101 GPa. The microstructure of the fiber and the polymer matrix in the organoplastic samples was studied before and after tensile tests. The features of the formation of the binder structure depending on the packing density of the fibers in organoplastics have been determined. The nature of the destruction of fibers and polymer matrix caused by the uniaxial tension has been studied.

Keywords: unidirectional organoplastic, aramid fibers Rusar-NT, melt binder, microstructure

Reference List

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    4. Petrova G.N., Rumyanceva T.V., Beyder E.Ya. Influence of modifying additives on fireproof properties and technological effectiveness of polycarbonate. Trudy VIAM, 2013, no. 6, paper no. 06. Available at: http://www.viam-works.ru (accessed: October 5, 2020).

    5. Shuldeshova P.M., Zhelezina G.F. The aramid layered and woven material for protection against impact and ballistic influences. Trudy VIAM, 2014, no. 9, paper no. 06. Available at: http://www.viam-works.ru (accessed: October 8, 2020). DOI: 10.18577/2307-6046-2014-0-9-6-6.

    6. Zhelezina G.F., Gulyaev I.N., Soloveva N.A. Aramide organic plastics of new generation for aviation designs. Aviacionnye materialy i tehnologii, 2017, no. S, pp. 368–378. DOI: 10.18577/2071-9140-2017-0-S-368-378.

    7. Zhelezina G.F., Voinov S.I., Solovyova N.A., Kulagina G.S. Aramid organotexolites for shock-resistant elements of aircraft structures. Zhurnal prikladnoy khimii, 2019, vol. 92, iss. 3, pp. 358–364. DOI: 10.1134/S0044461819030101.

    8. Zhelezina G.F., Voinov S.I., Chernykh T.E., Chernykh K.Yu. New aramid fibers Rusar-NT for reinforcement of structural organoplastics. Voprosy materialovedeniya, 2015, no. 1 (81), pp. 60–70.

    9. Kablov E.N. The role of chemistry in the creation of new generation materials for complex technical systems. Reports of XX Mendeleev Congress on General and Applied Chemistry. Ekaterinburg: UB RAS, 2016, pp. 25–26.

    10. Kablov E.N. Modern materials – the basis for innovative modernization of Russia. Metally Evrazii, 2012, no. 3, pp. 10–15.

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    12. Kablov E.N. The strategic directions of development of materials and technologies of their processing for the period to 2030. Aviacionnye materialy i tehnologii, 2012, no. S, pp. 7–17.

    13. Kolobkov A.S. Polymer composite materials for various aircraft structures (review). Trudy VIAM, 2020, no. 6-7 (89), paper no. 05. Available at: http://www.viam-works.ru (accessed: November 06, 2020). DOI: 10.18577/2307-6046-2020-0-67-38-44.

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    17. Grinevich D.V., Yakovlev N.O., Slavin A.V. The criteria of the failure of polymer matrix composites (review). Trudy VIAM, 2019, no. 7 (79), paper no. 11. Available at: http://viam-works.ru (accessed: November 6, 2020). DOI: 10.18577/2307-6046-2019-0-7-92-111.

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4.

DOI: 10.18577/2071-9140-2020-0-4-27-34

UDC: 677.523

Pages:: 27-34

A.A. Shavnev1, V.G. Babashov1, N.M. Varrik1

[1] Federal state unitary enterprise «All-Russian Scientific-Research Institute of Aviation Materials» of National Research Center «Kurchatov Institute»

CONTINUOUS FIBERS BASED ON ALUMINA (review)

The article provides an overview of the continuous alumina-based fibers currently produced as well as their production technologies, major manufacturers and applications. Ceramic fibers are relatively new species and are of particular interest at the modern stage of technology development, since their advantages make them promising in the creation of new types of composite materials. A large number of polycrystalline oxide fibers have been developed, both for refractory insulation and for reinforcing composites.

Keywords: continuous oxide fibers, alumina, mullite, high temperature resistant, composite materials, sol-gel method.

Reference List

    1.   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.

    2.   What to make the future of? New generation materials, technologies for their creation and processing  – the basis of innovations. Krylya Rodiny, 2016, no. 5, pp. 8–18.

    3.   Kablov E.N. The key problem is materials. Trends and guidelines for innovative development in Russia. Moscow: VIAM, 2015, PP. 458–464.

    4.   Inorganic fibers and method of preparation: pat. US3082099А; filed 26.02.60; publ. 19.03.63.

    5.   Preparation of inorganic oxide monofilaments: pat. US3311689А; filed 17.01.63; publ. 28.03.68.

    6.   High temperature alumina-silica fibers and method of manufacture: pat. US3503765А; filed 15.02.68; publ. 31.03.70.

    7.   Process for producing metal oxide fibers, textiles and shapes: pat. US3385915А; filed 02.09.66; publ. 28.05.68.

    8.   Method of firing dry spun refractory oxide fibers: pat. US3760049А; filed 01.03.71; publ. 18.09.73.

    9.   Non-frangible alumina-silica fibers: pat. US4047965А; filed 04.05.76; publ. 13.09.77.

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    16. Process for producing alumina fiber or alumina-silica fiber: pat. US4101615A; filed 20.08.75; publ. 18.07.87.

    17. Process for producing alumina-based fiber: pat. US5002750A; filed 19.09.89; publ. 26.03.91.

    18. Composite material comprising reinforced aluminum or aluminum-based alloy: pat. US4152149A; filed 25.01.77; publ. 01.05.79.

    19. Beffort O., Long S., Diener M. Fatigue behavior of unidirectionally continuous Altex-fibre reinforced aluminum based composites. 12th International Conference on Composite Materials (Paris, France, July 5–9, 1999). Available at: https://iccm-central.org/Proceedings/ICCM12proceedings/ site/papers/pap738.pdf (accessed: 18.09.2020).

    20. Continuous process for producing long α-alumina fibers: pat. US4812271A; filed 04.09.87; publ. 14.03.89.

    21. Woven fabric high-purity alumina continuous filament, high-purity alumina filament for production thereof, and processes for production of woven fabric and continuous filament: pat. US5145734A; filed 08.06.90; publ. 08.09.92.

    22. About Nitivy ALF. Available at: https://www.nitivy.co.jp/en/products/alf/index.html (accessed: September 22, 2020).

    23. ALF Fabric also known as Alumina Fiber. Available at: https://www.hiltex.com/en/products/alf-fabric.html (accessed: September 24, 2020).

    24. Product catalog of Cerafib GMBh (Germany). Available at: https://www.cerafib.de/leere-seite (accessed: September 22, 2020).

    25. Pfeifer S., Demirci P., Duran R. et al. Synthesis of zirconia toughened alumina (ZTA) fibers for high performance materials. Journal of the European Ceramic Society, 2016, vol. 36. Р. 725–731.

    26. Zhang H., Hang Y., Qin Y. et al. Synthesis and characterization of sol-gel derived continuous spinning alumina based fibers with silica nano-powders. Journal of the European Ceramic Society, 2014, vol. 34. Р. 465–473.

    27. Preparation process of multi-element composite alumina-based continuous fibers: pat. CN102070326B; filed 30.11.10; publ. 25.05.11.

    28. Method for preparing alumina-based continuous fibers by using SiO2 nano powder raw material: pat. CN102351516A; filed 06.07.11; publ. 15.02.12.

    29. Preparation method of alumina-based continuous long fiber containing mullite whisker second phase: pat. CN102978745B; filed 28.11.12; publ. 20.03.13.

    30. Preparation method of aluminum oxide ceramic continuous fiber: pat. CN102965764B; filed 13.11.12; publ. 13.03.13.

    31. Wang W., Weng D., Wu X. Preparation and thermal stability of zirconia-doped mullite fibers via sol-gel method. Progress in Natural Science: Materials International, 2011, vol. 21. Р. 117–121.

    32. Song X., Gao Y., Liu Q. et al. Thermally stable boron-containing mullite fibers derived from a monophasic mullite sol. Ceramic International, 2019, vol. 45, no. 1, pp. 1171–1178.

    33. Zimichev A.M., Varrik N.M., Sumin A.V. Research of the process of extrusion of continuous high-melting fibers. Trudy VIAM, 2017, no. 1 (49), paper no. 06. Available at: http://www.viam-works.ru (accessed: September 25, 2020). DOI: 10.18577/2307-6046-2017-0-1-6-6.

    34. Istomin A.V., Kolyshev S.G. Electrostatic method of forming ultrathin fibers of refractory oxides. Aviacionnye materialy i tehnologii, 2019, no. 2 (55), pp. 40–46. DOI: 10.18577/2071-9140-2019-0-2-40-46.

    35. Stepanova E.V., Zimichev A.M. Thermal insulation material for cords made of refractory oxide fibers. Trudy VIAM, 2020, no. 2 (86), paper no. 08. Available at: htpp://www.viam-works.ru (accessed: September 25, 2020). DOI: 10.18577/2307-6046-2020-0-2-72-80.

    36. Ivakhnenko Yu.A., Baruzdin B.V., Varrik N.M., Maksimov V.G. High-temperature fibrous sealing materials. Aviacionnye materialy i tehnologii, 2017, No. S, pp. 272–289. DOI: 10.18577/2071-9140-2017-0-S-272-289.

    37. Zimichev A.M., Varrik N.M. Thermogravimetric researches of alumina-based filaments. Trudy VIAM, 2014, no. 6, paper no. 6. Available at: http://www.viam-works.ru (accessed: September 29, 2020). DOI: 10.18577/2307-6046-2014-0-6-6-6.

    38. Method for producing high-temperature fiber based on aluminum oxide: pat. 2212388 Rus. Federation; filed 19.11.01; publ. 20.09.03.

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    42.       Kaya C., Butlera E.G., Selcuk A. et al. Mullite (NextelTM 720) fibre-reinforced mullite matrix composites exhibiting favourable thermomechanical properties. Journal of the European Ceramic Society, 2002, vol. 22. Р. 2333–2342.

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DOI: 10.18577/2071-9140-2020-0-4-35-40

UDC: 621.357.74

Pages:: 35-40

A.B. Laptev1, L.I. Zakirova1, M.L. Degovets1

[1] Federal state unitary enterprise «All-Russian Scientific-Research Institute of Aviation Materials» of National Research Center «Kurchatov Institute»

PROPERTIES OF PROTECTIVE GALVANIC COATINGS FOR REPLACEMENT OF CADMIUM ON STEEL FIXING PARTS (review) Part 2. Hydrogen embrittlement and frictional characteristics

The paper considers the options for replacing the electroplated single-layer toxic cadmium coatings with zinc-based compositions, as well as multi-layer coatings. Their tribological characteristics and tendency to hydrogenation of the protected metal during coating and operation are considered. Conclusions are drawn about the shortcomings of existing technologies and promising directions of research in this area. Thus, the most preferred composition for replacing a cadmium coating is a nickel-zinc coating with  nickel content of 12% (by weight), but a tin-zinc coating has the lowest value of the coefficient of friction, close to the value for cadmium.

 

Keywords: steel fasteners, zinc alloy coating, hydrogen embrittlement, tribological characteristics.

Reference List

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DOI: 10.18577/2071-9140-2020-0-4-41-46

UDC: 621.763

Pages:: 41-46

O.G. Devoino1, A.P. Pilipchuk2

[1] Belarusian National Technical University
[2] The Educational Establishment «Military Academy of the Republic of Belarus»

SPECIFIC FEATURES OF GAS-FLAME SPRAYING OF ULTRA-HIGH MOLECULAR POLYETHYLENE ON PARA-AMID FABRIC

The analysis of methods for increasing the ballistic resistance of para-aramid fabrics has been carried out. The defining value of friction between the threads of ballistic fabric, which contributes to the deformation of the bullet and its stopping, is noted. The expediency of using gas-flame spraying to create coatings from UHMWPE on the surface of para-aramid fabrics has been substantiated. The choice of material and equipment for gas-thermal spraying has been made. The technological parameters of gas-thermal spraying of UHMWPE on the surface of para-aramid fabrics have been determined. It is shown that the use of gas-flame spraying makes it possible to create surface layers of arbitrary shape.

Keywords: ultra-high molecular weight polyethylene (UHMWPE), gas-thermal spraying, coating, para-aramid fabric, technological parameters.

Reference List

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DOI: 10.18577/2071-9140-2020-0-4-47-58

UDC: 519.6:620.1

Pages:: 47-58

E.N. Kablov1, V.O. Startsev1

[1] Federal state unitary enterprise «All-Russian Scientific-Research Institute of Aviation Materials» of National Research Center «Kurchatov Institute»

MEASUREMENT AND FORECASTING OF MATERIALS SAMPLES’ TEMPERATURE DURING WEATHERING IN DIFFERENT CLIMATIC ZONES

The relation between standard meteorological parameters and surface temperature of samples exposed directly to the sun and in a sheltered environment has been studied using 6–8-year timeframe. The following materials have been used: KMKU-3.150.U0.1 carbon fiber reinforced polymer, KMKS-4.175.Т10 glass fiber reinforced polymer,  and D16-AT aluminum alloy substrate with black and white EP-140 epoxy coating . Outdoor weathering has been conducted at Gelendzhik and Moscow testing sites of the All-Russian Institute of Aviation Materials (VIAM). It has been shown that it′s possible to use a multilinear model to estimate the temperature of the materials′ surfaces during their weathering in different climatic regions. The following parameters for 1–12 months’ timeline have been used to estimate samples’ temperature at different locations: air temperature, total solar radiation, solar declination, and solar hour angle.

Keywords:  carbon fiber reinforced polymer, glass fiber reinforced polymer, epoxy coating, surface temperature, prognosis, multilinear model, meteorological parameters, validity.

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    31. Startsev V.O., Medvedev I.M., Startsev O.V. Рrognostication of surface temperature of epoxy coatings on aluminum alloy subjected to long exposure in natural climate conditions. Trudy VIAM, 2016, no. 10, paper no. 12. Available at: http://www.viam-works.ru (accessed: June 28, 2020). DOI: 10.18577/2307-6046-2016-0-10-12-12.
    32. Kablov E.N., Kirillov V.N., Zhirnov A.D., Startsev O.V., Vapirov Yu.M. Centers for climatic testing of aviation PCM. Aviatsionnaya promyshlennost, 2009, no. 4, pp. 36–46.
    33. Panin S.V., Startsev V.O., Course M.G., Varchenko E.A. Development of methods of climatic testing of materials for mechanical engineering and construction at the GTSKI VIAM im. G.V. Akimova. Vse materialy. Entsiklopedicheskiy spravochnik, 2016, no. 10, pp. 50–61.
    34. Panin S.V., Startsev O.V., Krotov A.S. Initial stage environmental degradation of the polymer matrix composites evaluated by Water diffusion coefficient. Trudy VIAM, 2014, no. 7, paper no. 09. Available at: http://viam-works.ru (accessed: June 28, 2020). DOI: 10.18577/2307-6046-2014-0-7-9-9.
    35. Bulmanis V.N., Startsev O.V. Prediction of changes in the strength of polymer fiber composites as a result of climatic effects. Yakutsk: Yakutsk branch of the Siberian Branch of the USSR Academy of Sciences; Institute of Physical and Technical Problems of the North, 1988, 32 p.
    36. Service Life Prediction of Polymers and Plastics Exposed to Outdoor Weathering. Ed. C.C. White, K.M. White, J.E. Pickett. Elsevier, 2018, 342 p.
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    38. Lebedev M.P., Startsev O.V., Kychkin A.K. Development of climatic tests of polymer materials for extreme operating conditions. Procedia Structural Integrity, 2019, vol. 20, pp. 81–86.
    39. Startsev O.V., Lebedev M.P., Kychkin A.K. Aging of polymer composite materials in an extremely cold climate. Izvestiya Altayskogo gosudarstvennogo universiteta, 2020, no. 1 (111), pp. 41–51.
    40. Laptev A.B., Nikolayev E.V., Kolpachkov E.D. Thermodynamic characteristics of aging of polymeric composite materials under conditions of real exploitation. Aviaсionnye materialy i tehnologii, 2018, no. 3, pp. 80–88. DOI: 10.18577/2071-9140-2018-0-3-80-88.

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DOI: 10.18577/2071-9140-2020-0-4-59-70

UDC: 620.178.35

Pages:: 59-70

V.S. Erasov1, E.I. Oreshko1

[1] Federal state unitary enterprise «All-Russian Scientific-Research Institute of Aviation Materials» of National Research Center «Kurchatov Institute»

FATIGUE TESTS OF METAL MATERIALS (review) Part 1. Main definitions, loading parameters, representation of results of tests

The article gives the review of techniques of fatigue tests of metal materials and presents the results of such tests . It has been shown that the low-cyclic fatigue occurs in conditions of elastoplastic deformation in material microvolume from the first cycles of loading. Its distinctive feature is influence on durability of the size and form of a mechanical hysteresis loop . Nucleation of fatigue microcracks and formation of the main crack occurs on the surface and in near-surface layers of a sample.

Keywords: fatigue tests, endurance, fatigue crack, cyclic fracture strength, deformation.

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    51. Oreshko E.I., Erasov V.S., Krylov V.D. Construction of 3D stress-strain diagram for the analysis of mechanical behavior of the material tested at various loading rates. Aviacionnye materialy i tehnologii, 2018, no. 2 (51), pp. 59–66. DOI: 10.18577/2071-9140-2018-0-2-59-66.
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DOI: 10.18577/2071-9140-2020-0-4-71-78

UDC: 536.24

Pages:: 71-78

D.Ya. Barinov1, P.S. Marakhovskij1, A.V. Zuev2

[1] Federal state unitary enterprise «All-Russian Scientific-Research Institute of Aviation Materials» of National Research Center «Kurchatov Institute»
[2] Federal state unitary enterprise «All-Russian scientific research institute of aviation materials

MATHEMATICAL MODELING OF DESTRUCTION OF FIBERGLASS-BASED THERMAL-PROTECTION MATERIAL 

The paper proposes physical and mathematical models of heat and mass transfer in fiberglass used as a destructive heat-shielding material for capsule type descent vehicles. To provide the mathematical model with the initial data, experimental studies of the thermophysical characteristics of the material and the kinetic parameters of destruction have been carried out. There has been made a simulation of the destruction of a material sample during descent in the Earth's atmosphere along a typical trajectory for various areas of the heat shield; as a result, the dependences of temperatures on the flight time and the depth of the coked layer have been determined.

Keywords: destruction, thermal protection, mathematical model, temperature fields, charred depth. 

Reference List

    1. Armor for «Buran». Materials and technologies of VIAM for the ISS «Energia-Buran». ed. E.N. Kablov. Moscow: Nauka i zhizn, 2013, 128 p.
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    6. Barbotko S.L., Volnyy O.S., Shurkova E.N. Creation of the phenomenological model describing change of the characteristic of combustibility (duration of residual burning) depending on thickness of polymeric material. Trudy VIAM, 2018, no. 10 (70), paper no. 12. Available at: http://www.viam-works.ru (accessed: June 17, 2020). DOI: 10.18577/2307-6046-2018-0-10-107-116.
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    8. 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.
    9. Kutsevich K.E., Dementeva L.A., Lukina N.F. Properties and application of polymer composite materials based on glue prepregs. Trudy VIAM, 2016, no. 8, paper no. 7. Available at: http://www.viam-works.ru (accessed July 9, 2020). DOI: 10.18577/2307-6046-2016-0-8-7-7.
    10. Barinov D.Ya., Prosuntsov P.V. Modeling of heat transfer in the layer of decomposing material of the heat-protective coating of the descent vehicle. Vestnik MGTU im. N.E. Bauman. Ser.: Mechanical engineering, 2016, no. 6, pp. 22–32. DOI: 10.18698/0236-3941-2016-6-22-32.
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DOI: 10.18577/2071-9140-2020-0-4-79-85

UDC: 620.1

Pages:: 79-85

N.O. Iakovlev1, A.A. Selivanov1, I.V. Gulina1, A.V. Grinevich1

[1] Federal state unitary enterprise «All-Russian Scientific-Research Institute of Aviation Materials» of National Research Center «Kurchatov Institute»

REVISITING THE DURABILITY OF HINGED-BOLT CONNECTIONS

The paper considers the issue of durability of hinged-bolt joints under the influence of a corrosive environment. There has been performed the analysis of the stress-strain state of the eyes’ material in the preloaded joints. Possibility of corrosion cracking of the eyes in case of exposure to a corrosive medium has been determined. Experimental confirmation of The destruction of the eyes’ material in a preloaded joint has been confirmed experimentally. The article proposes the development of the testing methodology of structural materials under the prolonged exposure to constant stress and corrosive medium under the conditions of a given deformation.

Keywords: hinged-bolt connection, eye, corrosive medium, preload, corrosion cracking.

Reference List

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    14. Makhutov N.A., Makarenko I.V., Makarenko L.V. Kinetics of multidirectional elastoplastic fracture taking into account the anisotropy of material properties. Zavodskaya laboratoriya. Diagnostika materialov, 2020, no. 86 (1), pp. 44–50.
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DOI: 10.18577/2071-9140-2020-0-4-86-94

UDC: 620.193

Pages:: 86-94

M.G. Abramova1

[1] Federal state unitary enterprise «All-Russian Scientific-Research Institute of Aviation Materials» of National Research Center «Kurchatov Institute»

REVISITING THE CONFIRMATION OF THE IDENTITY OF THE CORROSION DESTRUCTION MECHANISM OF ALUMINUM ALLOYS (review) Part 1. Atmospheric corrosion

The paper presents a review of accelerated methods of corrosion research of aluminum alloys; the destruction mechanism in these methods is similar with that one in corrosion in natural conditions.   The kinetics of the development of corrosion processes, the correspondence of absolute values of corrosion damage, their types and degree of development, the nature of corrosion damage and surface morphology, the nature of the fracture, and the analysis of the composition of corrosion products are considered as criteria of identity.

Keywords: corrosion mechanism, corrosion, full-scale climatic tests, full-scale accelerated tests, accelerated laboratory tests, aluminum alloys.

Reference List

    1. 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.
    2. Abramova M.G., Lutsenko A.N., Varchenko E.A. Concerning the aspects of validation of climate resistance of airborne materials at all life cycle stages (review). Aviacionnye materialy i tehnologii, 2019, no. 4 (58), pp. 86–94. DOI: 10.18577/2071-9140-2020-0-1-86-94.
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