Articles

 


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1.
УДК 669.715
Features of forming of structure of round ingots from aluminum alloys on the basis of Al–Cu–Mg system
Traditionally, in the open air of modern aviation technology products are used alloys based on the Al–Cu–Mg system. However, due to the ever increasing demand for the resource and reliability of the critical elements of the airframe requires improving service performance. One area of development to improve the lifetime characteristics of a multicomponent microalloying additives (Sc, Zr – up to 0,15%; Ag – 0,50%) to obtain a semifinished unrecrystallized structure. In this paper we present the main findings of phase dissolution features in the homogenization of ingots with a diameter of 100 mm from alloy series 1163 and future vysokoresursnyh alloy B-1167. Abstract macro and microstructure, phase composition of the ingots as cast and homogenised state. An assessment of their technological properties. The studies show a positive effect of an integrated micro-alloying with transition metals (Sc, Zr) and Ag. The work within the framework of an integrated research area 8.1. «High-welded al
Keywords: structure, phase composition, properties, MRSA analysis


2.
УДК 669.715:669.884
Structure aspects of 1441 Al–Cu–Mg–Li alloy ingots according to solution heat treatment methods
The investigation of phase merging within 1441 Al–Cu–Mg–Li alloy ingots solution heat treatment was carried out. Raising temperature of solution heat treatment from 500 to 530°С causes almost complete nonequilibrium eutectic merge. 540°С, 24 h regime can cause partial melting of nonequilibrium eutectic on grain boundaries and ingot microporosity. Double-stage solution heat treatment of 1441 alloy with first stage at the 70–100°С lower point than the temperature of nonequilibrium solidus and high temperature second stage that is a little more than nonequilibrium solidus temperature allows reaching the most complete precipitation merge and raises material`s technical plasticity at the hot deformation temperature. The work within the framework of an integrated research area 8.1. «High-welded aluminum and aluminum-lithium alloys low density with high fracture toughness» («The strategic directions of development of materials and technologies of their processing them for the period till 203
Keywords: Al–Cu–Mg–Li alloy, ingot, microstructure, solution heat treatment, differential thermal analisys


3.
УДК 669.715
Structure of aluminium powders for additive manufacturing, obtained by gas atomization
Additive technologies allow receiving details from widely range of materials, including aluminum alloys. Thus high cooling rates during gas atomization of powders can lead to formation of nonequilibrium structures which can change during heat treatment. This paper deals with the results of investigation of microstructure of aluminium powder after different types of heat treatment. The work is carried out under the realization of integrated research area 10.3. «Technologies of atomization for producing high quality metallic powders for additive manufacturing and powder for brazing» («Strategic directions of development of materials and technologies for processing them for the period up to 2030»)
Keywords: atomization, aluminium, powders, heat treatment


4.
УДК 621.762
The use of welded and powder casting superalloys produced by FGUP «VIAM» for the repair of gas turbine engine components laser gas powder braze
In article aspects of use of domestic metal powders of the welded EP718 and foundry alloys of VZhL12U and VKNA-1VR to restore the geometry of laser gas turbine engine parts by braze. The morphology of the particles and the fractional composition of the applied powder materials. Are investigated influence of key parameters of a braze on geometry of the built-up material. The features of formation of structure of the deposited material, change the height of microhardness and base material. It is shown that the optimum exhaust braze modes provides a dense structure of dendritic structure without cracks, pores, neproplavov.
Keywords: laser gas powder braze, metal-powder composition, protective environment, dendritic structure, cellular structure, micro-hardness, the braze material


5.
category: Functional and smart materials
УДК 546.65
Ospennikova O.G.1, Piskorskiy V.P.1
  • [1] Federal State Unitary Enterprise All-Russian Scientific Research Institute of Aviation Materials State Research Center of the Russian Federation
  • Materials for permanent magnets (review)
    The modern basics problems of extraction and production of materials for high-energy permanent magnets are considered. Features of extraction of rare-earth metals in Russia and in the world are considered. The analysis of the world and Russian market of REM is carried out. The analysis of solutions of the developed problems is provided. The analysis of ways of development REM production in Russia is carried out. This work is performed within complex scientific direction 11.1. «Thermostability hard magnetic materials and mathematical models of calculation their temperature characteristics for new generation navigations devices» («The strategical directions of materials development and their processing technologies till 2030»)
    Keywords: rare earth metals, permanent magnets, deposits of rare earth metals


    6.
    category: Functional and smart materials
    УДК 339.13:621.318.2
    Ospennikova O.G.1, Piskorskiy V.P.1
  • [1] Federal State Unitary Enterprise All-Russian Scientific Research Institute of Aviation Materials State Research Center of the Russian Federation
  • The economics aspects of manufacturing permanents magnets (review)
    In article the main economics questions of production of high-energy permanent magnets are considered. Features of production of permanent magnets in America, Europe, China of willows of Russia are considered. The forecast of development production of permanent magnets in the world and in Russia is given. Work is executed within implementation of the complex scientific direction 11.1. «Thermostable magneto hard materials and mathematical models of calculation of their temperature characteristics for navigation instruments of new generation» («The strategic directions of development of materials and technologies of their processing for the period till 2030»)
    Keywords: high-energy permanent magnets, market of permanent magnets


    7.
    category: Composite materials
    УДК 678
    Russian production of carbon fillers today (review)
    The article discusses the range and properties of carbon fibers (CF) of Russian production and the prospects for their use as reinforcing fillers in polymer composites compared with foreign counterparts as part of the import substitution policy. The work within the framework of an integrated research area 13. «Polymer composite materials (PCM)» on the problem of 13.2. «Structural PСМ» («Strategic directions of development of materials and technologies for processing them for the period up to 2030»)
    Keywords: carbon fibers, polymer composite materials, reinforcing fillers, carbon composites


    8.
    category: Functional and smart materials
    УДК 621.792.053
    Lukina N.Ph.1, I.A. Sharova1
  • [1] Federal State Unitary Enterprise All-Russian Scientific Research Institute of Aviation Materials State Research Center of the Russian Federation
  • Properties and assignment of being self-glued materials aviation assignment
    Properties of being self-glued materials on the different bearing substrates developed by VIAM Federal State Unitary Enterprise are presented. It is shown that these materials are intended for operational repair of the revealed defects of exterior surface of glider and elements of wing of aviation engineering, including in field conditions. Work is executed within implementation of the complex scientific direction 15.1. Multifunction adhesive systems. («The strategic directions of development of materials and technologies of their processing for the period till 2030»)
    Keywords: the sticky tape, being self-glued material, adhesive with constant stickiness, aluminum foil, fabric basis, durability when flaking


    9.
    category: Testing of materials and structures
    УДК 620.1:669.055
    Development of elementary constructive and similar samples and their compression tests
    In article one of approaches of development of elementary constructive and similar samples and carrying compression tests for is considered at static and repeated loadings when using the patented adaptation. Research were executed within realization of the complex scientific direction 6.2. «Layered metalpolymer, bimetallic and hybrid materials» («The strategic directions of development of materials and technologies of their processing for the period till 2030»)
    Keywords: compression, structural test samples, aluminum-lithium alloys, wing panel fragments, a hybrid material