Articles

 


№1 | №2 | №3 | №4 | №5 | №6


1.
category: Composite materials
УДК 669.018.95
A.A. Shavnev1, B.В. Berezovsky1, Yu.А. Kyrganova2
  • [1] Federal State Unitary Enterprise All-Russian Scientific Research Institute of Aviation Materials State Research Center of the Russian Federation
  • [2] Bauman Moscow State Technical University
  • SPECIFICITY OF METAL MATRIX COMPOSITES BASED ON ALUMINUM ALLOY REINFORCED BY SIC PARTICLES APPLICATION. PART I (review)
    International technological review of Al–SiC system metal matrix composites application is shown. Application examples of this metal matrix composites is shown. There is an information about basic specificities and demands of all applications is applied in examples. Special attention is devoted to specificity of construction analysis which caused the selection of this composite. Composite structure and technology of it manufacturing is described. Advantages of these composite materials is noted.
    Keywords: Keywords: metal matrix composites, composites reinforced by SiC particles, composites based on aluminum alloy.


    2.
    category: Scientific reports
    УДК 621.762
    N.A. Manakov1, E.V. Svidenko1
  • [1] Orenburg state University
  • АBOUT THE POSSIBILITIES OF IMPROVING THE WEAR RESISTANCE OF CUTTING TOOLS
    Despite the development of new technologies of processing of metals, improving the wear resistance of cutting tools remains a very important task. One method of solving this problem is the use of solid intensifiers cooling (thio) cutting surface of the tool. One of the most promising tio is copper is a relatively inexpensive material with high thermal conductivity. Copper plating of the inserts was performed in an electric furnace RM 214 in a metal crucible. In the crucible was placed a mixture consisting of 50% Al2O3, 1,5–2% of NH4Cl, the rest of the copper – oxide (SiO). Trials were conducted of the influence of the copper plating of plates of solid alloy T15K6 to change at the right temperature during the cutting process. Was determined by the depth of the copper plating layer, the microstructure of the resulting material, identified wear during cutting. The aim is to increase the wear resistance of cutting tools due to the tio.
    Keywords: copper, heat treatment, microstructure, wear


    3.
    category: Structural metallic materials
    УДК 669.716:621.785
    V.G. Shmorgun1, O.V Slautin1, V.N. Arisova1, D.A Yevstropov1, Y.V. Mironova1, V.P. Kulevich1
  • [1] Federal state budgetary educational institution of higher professional education «Volgograd state technical university»
  • STRUCTURE AND A PHASE COMPOSITION OF COATINGS SYSTEMS Ti–Cu, IS FORMED ON THE SURFACE OF TITAN
    It is shown that thermal treatment of welded explosion copper-titanium composite allows to form on the surface of titanium double coating of titanium kupridov hardness of 3,9–4,7 GPa.
    Keywords: copper, titanium, intermetallic, explosion welding, diffusion annealing.


    4.
    category: Composite materials
    УДК 621.373.826
    V.M. Fomin1, A.G. Malikov1, A.M. Orishich1, A.O. Tokarev2
  • [1] Siberian branch of Russian academy of sciences Khristianovich Institute of theoretical and applied mechanics
  • [2] Siberian state university of water transport
  • MICROSTRUCTURE AT LASER FUSING METAL POWDERS
    The paper deals with research conducted at ITAM SB RAS laser welding nickel-chromium and iron powder on a steel plate in order to obtain bimetallic wear-resistant coatings.
    Keywords: laser cladding, micro-hardness, wear resistance, CO2-laser, bimetal, nickel-chrome plating, R6M5.


    5.
    category: Structural metallic materials
    УДК 669.793
    S.P. Yatsenko1, L.A. Pasechnik1, V.M. Skachkov1
  • [1] Federal State government-Financed Research Institution Institute of Solid State Chemistry, of the Ural Branch of the Russian Academy of Sciences
  • SCANDIUM: PRODUCTION AND APPLICATION
    A promising feedstock for the obtaining of scandium is alumina production sludge, in which more than 150 tons of this scattered metal are annually wasted at each Ural plant. A method of carbonization of the sludge pulp by kiln gas of alumina production is described briefly. It leads to concentration of scandium, titanium, and zirconium, and decreases the toxicity of alkaline pulp in sludge fields by converting alkali into soda-hydrocarbonates with pH value lowering from 12 down to <8,5. This technology provides the production of hundred times more rich solutions than pregnant solutions of uranium in-situ leaching. An economically effective precipitation method for recovery of scandium oxide suitable for the production of master alloys, alloys, and compounds has been proposed. An injection method of synthesis of aluminum-scandium master alloys has been developed and tested in the industrial furnaces at the KUMP Public Limited Company. Advantages of application of scandium-containing all
    Keywords: scandium, recovery, red mud, alloys, Al–Sc master alloy, scandium compounds, application.


    6.
    category: Testing of materials and structures
    УДК 621.74.045
    L.I. Rassohina1, P.I. Parfenovich1
  • [1] Federal State Unitary Enterprise All-Russian Scientific Research Institute of Aviation Materials State Research Center of the Russian Federation
  • THE ISSUES OF DEVELOPING MODEL COMPOSITIONS OF NEW GENERATION ON THE BASIS OF DOMESTIC MATERIALS FOR THE MANUFACTURE OF GAS TURBINE ENGINE BLADES
    Model compositions are widely used in manufacture of GTE details by investment casting. The analysis of contemporary issues, related to quality of models was reviewed and main branches of development of domestic model compositions of new generation, which aren’t inferior to foreign counterparts in properties, were determined.
    Keywords: investment casting, model compositions, wax, polymeric resin, terephtalic acid.


    7.
    category: Composite materials
    УДК 621.373.826
    P.N. Kilina1, A.M. Khanov1, E.A. Morozov1, L.D. Sirotenko1
  • [1] Perm National Research Polytechnic University
  • USE OF TECHNOLOGY OF THE SELECTION LASER AGGLOMERATION FOR RECEIVING IMPLANTS WITH CELLULAR STRUCTURE
    The results of the application of selective laser sintering technology to produce implants composed of regular geometric shape cellular structures was shown. Computer 3D-model designs created in the Delcam PowerShape CAD system. Laser sintering was performed at the installation Realizer SLM 50 at various laser intensities. Stainless steel and titanium powders with an average particle size of 30 microns were used as the initial material. Obtained cellular samples that were implanted in laboratory animals. After the introduction of implants for six months integral indicators characterizing the general condition of the animals were evaluated. Indices were within normal limits, the rejection of implants wasn’t observed.
    Keywords: selective laser sintering, 3D-model, Wigner–Seitz cell, cellular implants, metal powders.


    8.
    category: Testing of materials and structures
    УДК 669.058
    N.I. Artemenko1, V.N. Simonov2, D.A. Aleksandrov1
  • [1] Federal State Unitary Enterprise All-Russian Scientific Research Institute of Aviation Materials State Research Center of the Russian Federation
  • [2] Bauman Moscow State Technical University
  • ASSESSMENT OF THE RELATIVE WEAR RESISTANCE OF ION-PLASMA FUSED COATINGS ON VT8 AND EP742 ALLOYS
    The paper presents test data on the wear resistance of coatings. The tests were conducted according to ASTM G99-05. The coatings were deposited by ion-plasma method on samples of alloys VT8 and EP742. Coating with high relative wear resistance were selected, the regularities of high adhesive strength of coatings were detected.
    Keywords: wear resistance testing, titanium alloys, ion-plasma method, plasma-chemical method.