Articles

 


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1.
category: Heat-resistant materials
УДК 669.018.44
Bondarenko Yu.A.1, Yechin A.B.1, Kolodyazhny M.Yu.1
  • [1] Federal State Unitary Enterprise All-Russian Scientific Research Institute of Aviation Materials State Research Center of the Russian Federation
  • MODERN RESEARCH IN THE FIELD OF TECHNOLOGY OF MELTING AND CRYSTALLIZATION FOR THE FORMATION OF THE NATURAL COMPOSITE STRUCTURE IN A HIGHLY TEMPERATURE-RESISTANT ALLOYS BASED ON NIOBIUM-SILICON FOR DETAILS OF THE HOT PATH OF GAS TURBINE ENGINES
    Actual engine design due to the creation with new highly heat resistant material, especially for blades and other components of gas turbine engines. An analysis of the scientific and technical documentation that the and development of high-temperature composite materials based on niobium and niobium-silicon hardening phases involved in a number of major countries, including Russia, US, Germany, France, Britain, China, Japan. The study identified the main development trends in this area and the main indicators of the level of technical development.
    Keywords: directional solidification; gas turbine engine; superalloy; niobium; in-situ composite structure.


    2.
    category: Heat-resistant materials
    УДК 669.018.44:669.245
    ABOUT THE INFLUENCE OF THE FRACTIONAL COMPOSITION OF SPHERICAL-SHAPED PARTICLES OF SUPERALLOYS ON THE PRESENCE IN A COMPACTED MATERIAL STRUCTURAL ANOMALY NAMELY THAT INDIVIDUAL IN SPHERICAL-SHAPED PARTICLES RETAIN THE SIGNS OF THE CAST STRUCTURE
    The article examines the relationship between the difference in the temperature of Y'-phase complete dissolution in the spherical-shaped particles of various sizes of superalloys and anomaly patterns of HIP-material, namely that individual spherical-shaped particles in HIP-material retain the signs of the cast structure after HIP.
    Keywords: powder metallurgy, molded structure, superalloys.


    3.
    category: Heat-resistant materials
    УДК 621.791
    V.G. Shmorgun1
  • [1] Federal state budgetary educational institution of higher professional education «Volgograd state technical university»
  • INTERACTION OF ALUMINUM AND NICKEL IN CONTACT FUSION
    The article examines the processes of liquid-phase interaction in layered intermetallic nickel-aluminum composite material. The study was performed on obtained by the explosion welding samples of composite material nickel AD1+NP2 (4+4 mm) after isothermal heat treatment. As a result of the interaction of nickel with the molten aluminium in the heat treatment the structure of crystallized melt becomes a matrix with dispersed intermetallic inclusions NiAl3 in the solid solution on the aluminum basis. On the nickel side diffusion zone consists of two layers of aluminide NiAl3 and Ni2Al3. The increase of temperature and time of liquid-phase interaction leads to an increase in total thickness of the diffusion zone and concentration of NiAl3 crystallized in an aluminum melt.
    Keywords: layered composite material, intermetallic, phase composition, microhardness, diffusion zone.


    4.
    УДК 621.762.55
    O.V. Vasileva1, P.A. Kuznetcov1, V.V. Bobyr1
  • [1] Federal state unitary enterprise «Central Research Institute of Structural Materials «Prometey» State research center of the Russian Federation
  • STRUCTURE AND PROPERTIES OF STAINLESS STEEL 316L, 410L, 17-4 PH, MANUFACTURED BY SELECTIVE LASER MELTING PROCESS
    Technologies of additive manufacturing widely used in various fields of industry. In this article the results of structure and mechanical properties research of stainless steels different grades manufactured by SLM are presented. In comparsion to the traditional technologies, there is a trend to increase strength and decrease ductility.
    Keywords: additive manufacturing, selective laser melting, stainless steel powders.


    5.
    category: Composite materials
    УДК 620.17
    COMPARISON OF THE GEOMETRICAL SIZES POLYMER MATRIX COMPOSITE MATERIALS SAMPLES WHICH ARE USING INTERNATIONAL ASTM STANDARDS AND DOMESTIC GOST
    In this work comparison of geometry of samples specified in the international ASTM standards, on mechanical tests of Polymer Matrix Composite Materials and in the domestic GOST standards is carried out.
    Keywords: mechanical tests, composite materials, carbon, fiberglass, organic plastic, stretching, compression, bending, shear, shear in the plane.


    6.
    УДК 621.74:669.295
    L.I. Rassohina1, Bityutskaya O.N.1, P.I. Parfenovich1
  • [1] Federal State Unitary Enterprise All-Russian Scientific Research Institute of Aviation Materials State Research Center of the Russian Federation
  • STUDY OF THE PROPERTIES OF LATEX BINDER «REMAL 20» AND SUSPENSIONS FOR THE MANUFACTURE OF SHELL SHAPE IN THE PRODUCTION OF CASTINGS FROM γ-TiAl ALLOYS
    The study involved issues of development of structures of molds for the production of castings of γ-TiAl alloys on the basis of water dispersion of aluminum oxide, suspension, mechanical properties of ceramic samples. The conclusions about the need to continue exploration in this sphere
    Keywords: casting alloys based on titanium, ceramic slurry, a binder, shell shape, fused.


    7.
    category: Composite materials
    УДК 678.049:541.126
    Rozenenkova V.A.1, Zhuravleva P.L.1
  • [1] Federal State Unitary Enterprise All-Russian Scientific Research Institute of Aviation Materials State Research Center of the Russian Federation
  • PRECERAMIC POLYMER COMPOUNDS FOR CERAMIC MATRIX COMPOSITES
    It is shown that application of some polyreactive organic-silicon and organic compounds allows to carry out process of cure polikarbosilanovy binding in the inert environment. On the basis of results of the research which has been carried out with attraction of methods of the thermogravimetric analysis (TGA), the rentgenofazovy analysis (RFA) and an ekstraktsiya, it is established that curing binding are products of interaction of initial components. Further pyrolysis leads to formation of the inorganic matrixes, which exit in 1,3 times above, than an yield pyrolyzates initial components.
    Keywords: ceramic precursors, polycarbosilane, oligosilazane, cure, pyrolysis, ceramic matrixs, amorphous silicon carbide.


    8.
    category: Composite materials
    УДК 678.844
    Chaykun A.M.1, Naumov I.S.1, Venediktova M.A.1, Alifanov E.V.1
  • [1] Federal State Unitary Enterprise All-Russian Scientific Research Institute of Aviation Materials State Research Center of the Russian Federation
  • MODERN APPROACHES TO CREATION OF COMPOUNDING OF SPECIAL RUBBERS ON BASIS OF FLUOROSILICATE GROW RUBBERS (review)
    The overview shows modern tendencies in synthesis of fluorosilicone virgin rubbers and vulcanizate rubbers Such approach is very actual. Serious increase of exploitation intensity of aircrafts claims new requirements to rubbers used. First of all these are increase in temperature range of exploitation and improvement of exploitation parameters. That is why improvement of rubbers on these bases based on fluorosilicone virgin rubbers as these provide wide temperature range of exploitation and have high working characteristics. Rubbers based on silicone virgin rubbers can work in air at wide temperature range. However they have low fuel- and oil resistance. High-molecular fluorosilicone virgin and vulcanizate rubbers have balanced combination of resistance to aggressive environment and good working ability in wide temperature range. Improving rubber compositions based on above-mentioned virgin rubbers allows to improve their exploitation parameters and thus increase the working tim
    Keywords: rubber, rubber compounds, fluorosilicone rubbers.


    9.
    category: Functional and smart materials
    УДК 621.792
    MODERN TENDENCIES OF DEVELOPMENT SILICONE SEALANTS AND COMPOUND ABROAD (review)
    The literary and patent overview is provided in work carried out for the purpose of assessment of tendencies of development organic silicon elastomer abroad. Modern fillers for organic silicon rubbers, modification of organic silicon sealants, and also the main directions in researches of catalysis process hydrosilication abroad are considered.
    Keywords: polymers, sealants, hydrosilication catalysts, hybrid systems.