Articles

 


№1-2


1.
УДК 669.018.44:669.245
Chebotareva E.S.2
  • [2] Bauman Moscow State Technical University
  • INFLUENCE OF «WORKPIECE–TOOL» TEMPERATURE GRADIENT ON HOT DEFORMATION OF NICKEL-BASED SUPERALLOYS
    Hardly-deformed heat-resistant nickel-based alloys have limited plasticity in narrow temperature interval of hot deformation and have a high sensitivity to the deformation rate. The results of hardly-deformed heat-resistant nickel-based alloys rolling researches shows efficiency of using controlled rolls heating and thermal insulation coating. Application of controlled rolls heating and glass enamel thermal insulation coating provides increase of technological plasticity, decrease of required technological force of deformation, decrease of deformed semi-finished products laboriousness and their quality improvement.
    Keywords: heat-resistant nickel-based alloys, rolls, manufacturing process, technology, heating, plasticity, rolling.


    2.
    УДК 669.018.44:669.245
    Medvedev P.N.1
  • [1] Federal State Unitary Enterprise All-Russian Scientific Research Institute of Aviation Materials State Research Center of the Russian Federation
  • TEXTURE AND MICROSTRUCTURE FORMATION IN THE NICKEL-BASE SUPERALLOY DURING SELECTIVE LASER MELTING
    The research of the texture and microstructure modification of the nickel-base superalloy ZHS6K-VI synthesised by the selective laser melting method with the different scan strategies (various speeds of scanning, power of a laser beam) was carried out by methods of X-ray and scanning electronic microscopy. The quantitative estimation of structure recrystallization the extent after selective laser melting was spend. The melting parameters influence on the structure changes was defined.
    Keywords: selective laser melting (SLM), texture, nickel-base superalloy, γ/γ′-phases.


    3.
    УДК 669.018.44
    Kochubey A.Ya.1
  • [1] Federal State Unitary Enterprise All-Russian Scientific Research Institute of Aviation Materials State Research Center of the Russian Federation
  • TEXTURAL CONDITIONS DIAGRAMS OF NICKEL SUPERALLOY AND MAGNESIAN ALLOY AT HOT AXISYMMETRIC COMPRESSION
    Axisymmetric hot compression experiments of nickel superalloy ЭК151 and MA5 alloy specimens in a wide temperatures and deformations intervals were carried out. Axial texture formation was studied by X-ray diffractometry methods. The complex studying method of texture forming depending on temperature and deformation was developed. The plotting method of textural diagrams is universal and is applicable for other based alloys.
    Keywords: hot plastic deformation, axisymmetric compression, axial texture, pole figure, X-ray diffractometry, textural condition diagrams.


    4.
    category: Testing of materials and structures
    УДК 539.26
    Kochubey A.Ya.1
  • [1] Federal State Unitary Enterprise All-Russian Scientific Research Institute of Aviation Materials State Research Center of the Russian Federation
  • APPLICATION OF THE WHITE X-RADIATION IN THE STRUCTURAL ANALYSIS OF CRYSTAL MATERIALS
    A crystal structure analysis of different materials by construction of pole figures in white (continuous spectrum) a X-radiation and them indicating was carried out. On polе figures types of crystal lattices and them crystal system was defined. Pole figures from metals with different type of a cubic lattice was built and analysed: silicon (a diamond lattice), molybdenum (body-centered) and nickel (face-centered).
    Keywords: white X-radiation, X-ray crystal analysis, crystal structure, metal research.


    5.
    УДК 620.197
    Denisova V.S.1, Agarkov A.B.1
  • [1] Federal State Unitary Enterprise All-Russian Scientific Research Institute of Aviation Materials State Research Center of the Russian Federation
  • HIGH TEMPERATURE GLASS CERAMIC COATING FOR HEAT RESISTANT NICKEL ALLOYS PROTECTION
    The heat resistant glass ceramic coating was developed for heat resistant nickel alloy protection. The technology heat-resistant glass-ceramic coating fabrication was obtained for protection of combustion chambers made of high-strength weldable alloy. The main properties of heat resistant glass-ceramic coating were investigated, e.g. bonding strength, thermal stress resistance, heat resistance. Heat-resistant glass-ceramic coating fabrication is easy to provide, the coating is non-porous and fine for dimentional complex details.
    Keywords: thermal stress resistance, heat resistance, coating, nickel alloy, hot corrosion, glass.


    6.
    category: Functional and smart materials
    УДК 620.197
    Denisova V.S.1, Krasnov L.L.1, Kirina Z.V.1
  • [1] Federal State Unitary Enterprise All-Russian Scientific Research Institute of Aviation Materials State Research Center of the Russian Federation
  • SOME ASPECTS OF APPLICATION OF FIREPROOF COVERINGS (review)
    The current state of problem and perspective of production of fireproof coverings is considered. Major factors coverings of foaming type influencing fireproof efficiency are analyzed. Main types of fireproof coverings of domestic and foreign production, and world tendencies are given to developments of this direction. Aspects of creation of compounding of fireproof compositions are mentioned. Characteristics of perspective fireproof coverings intended for protection against overheat of constructive elements of aviation engineering developed by VIAM Federal State Unitary Enterprise are provided.
    Keywords: fireproof pastes, fire retardant, intumescent fire protection coatings, fire protective material, thermal protection, foaming.


    7.
    category: Composite materials
    УДК 667.621
    Petrova A.P.1, Melnikov D.A.1
  • [1] Federal State Unitary Enterprise All-Russian Scientific Research Institute of Aviation Materials State Research Center of the Russian Federation
  • ADHESIVE BINDERS FOR POLYMER AND LAYERED ALUMINIUMPOLYMER COMPOSITE MATERIALS
    Here are physical and mechanical properties, rheological properties of adhesive binders of melting type. Here are next properties: tensile strength, bending strength, relative extension, fracture viscosity, glass transition temperature, modulus of elasticity under tension and bending. Shown the influence of selected technology for processing of binder to demands for rheological properties.
    Keywords: binders, adhesive binders, strength of adhesive bonds, rheological properties, physic and mechanical properties, technology for processing of binder in Polymer Composite Materials.


    8.
    УДК 678.8
    Sinyakov S.D.1, Zastrogina O.B.1, Pavlyuk B.F.1
  • [1] Federal State Unitary Enterprise All-Russian Scientific Research Institute of Aviation Materials State Research Center of the Russian Federation
  • COMPOSITIONS BASED ON PHENOLIC RESINS MODIFIED WITH POLYVINYL ACETALS (review)
    The present article provides an overview of compositions based on phenol-formaldehyde resins and polyvinyl acetals. The mutual influence of the components on each other and on the final properties of the products obtained is considered. The features of the chemical interaction of the initial components and the changes in their physicochemical properties are studied depending on their structure. In the review, the most widely known brands of resins and adhesives, which are made on the basis of these compositions, their properties and applications, are considered.
    Keywords: phenolic resin, polyvinyl acetal, modification.


    9.
    category: Composite materials
    УДК 678.6
    Ogmrcyan A.R.1, Guseva M.A.1
  • [1] Federal State Unitary Enterprise All-Russian Scientific Research Institute of Aviation Materials State Research Center of the Russian Federation
  • RESEARCH OF THE EFFECT OF MODIFIERS ON THE PROPERTIES OF AN EPOXYVINYLESTER COMPOSITION CURED BY THE RADICAL POLYMERIZATION MECHANISM
    The possibility of replacing the imported resin in the composition of epoxyvinylether binders with domestic ones. A comparison of the properties of the domestic epoxy vinyl ester VES-BM and ester Derakane 470-300 (manufactured – by Ashland), as well as binders on their basis, is presented. The properties of binders are given, depending on the peroxides used in their composition. The results of tests carried out using differential scanning calorimetry, dynamomechanical analysis, and rheological investigation methods are shown. The results of studies on the modification of epoxyvinylether binders with isocyanate and diallyl phthalate are presented with a view to improving their properties.
    Keywords: binder, epoxy vinyl ester resins, viscosity, peroxides, curing, thermomechanical studies, rheology.