Section of Structure design and analysis
Structure and the mechanical behavior of a near-alpha multilayer laminate under impact loading
A.A. Sarkeeva, A.A. Kruglov
Year: 2023
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Volume: 13
Issue: 4s
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Pages: 488-492
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The powder EP741NP superalloy with the initial ultrafine-grained microstructure after superplastic deformation and a solid-state joint in combination of the EP741NP superalloy and a cast intermetallic VKNA-25 alloy.
E.V. Galieva, V.A. Valitov, E.Y. Klassman, A.A. Ganeev, R.R. Gabbasov, E.M. Stepukhov, I.I. Khafizov
Year: 2023
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Volume: 13
Issue: 4s
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Pages: 493-498
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The artificial aging did not result in any change in the AK12 alloy's microhardness, whereas T6 treatment led to a uniform increase in microhardness throughout all zones of the sample. There was no significant grain growth observed in the aluminum-based solid solution and silicon particles after these heat treatments.
N.F. Khayretdinov, D.B. Kabirova, A.K. Valeeva, R.F. Fazlyakhmetov, M.F. Imayev
Year: 2023
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Volume: 13
Issue: 4s
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Pages: 505-510
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Structural behavior and hardening of the high-strength aluminum alloy 1965 after isothermal rolling at the temperature of liquid nitrogen with reductions in the range of 30-70% was studied for two pre-quenched conditions - the homogenized ingot and further hot-forged billet. In spite of differences in the initial structure parameters, the structure transformations in both the alloy states under cryorolling were preferably associated with the formation and development of the dislocation-cellular structure of the matrix.
M.V. Markushev, M.A. Akhmetshin, V.V. Tereshkin, S.V. Krymskiy, E.V. Avtokratova, O.S. Sitdikov
Year: 2023
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Volume: 13
Issue: 4s
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Pages: 475-480
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The influence of warm multidirectional isothermal forging on the grain structure and mechanical properties of the high-nitrogen austenitic steel VNS-53-Sh has been studied. It has been shown that the average grain size was reduced to ~ 6 μm after forging compare to initial state due to the formation of small grains at the boundaries of the original grains and fragmentation of them. It promote an increase in strength properties.
A.V. Kim, S.A. Akkuzin, I.Yu. Litovchenko, E.N. Moskvichev, N.A. Polekhina, D.S. Kushnereva
Year: 2023
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Volume: 13
Issue: 4s
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Pages: 470-474
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Microhardness of the Cu-Al-Cu sample after accumulative HPT before and after annealing (left) and schematic representation of the effect of accumulative HPT and further annealing on the sample (right).
V.N. Danilenko, N.Y. Parkhimovich, L.U. Kiekkuzhina, D.V. Gunderov
Year: 2023
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Volume: 13
Issue: 4s
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Pages: 444-449
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The geometric scheme illustrates changes in size of coordination tetrahedron in ZnSxSe1-x substances diluted by 3d-impurity. Neutron-diffraction characterization of structure instability of ZnSxSe1-x:M (M=3d-ions) solid solutions are presented in the article.
V.I. Maksimov, T.P. Surkova, E.N. Maksimova, V.D. Parkhomenko
Year: 2023
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Volume: 13
Issue: 4
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Pages: 377-381
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In niobium filaments of the Cu-7.7%Nb composite under cold-drawing beginning from the true strain of 8.5, macrostrains are observed according to the X-ray data, which is confirmed by TEM data, which demonstrate distortions of niobium lattice and formation of partially coherent boundaries (110)Nb || (111)Cu. These macrostrains are anisotropic and higher than those in the Cu-18%Nb composites.
E.G. Valova-Zaharevskaya, E.N. Popova, I.L. Deryagina
Year: 2023
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Volume: 13
Issue: 4
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Pages: 368-372
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The distribution of microhardness (HV 0.5) and the average amount of γ-, α- and ε-martensite in a sample made of steel Fe-0.02C-18Cr-8Ni after SPDT (a) and the distribution of α-martensite under the ductile static fracture surface of steel after ECAP (b, c)
G.V. Klevtsov, R.Z. Valiev, N.A. Klevtsova, N.A. Enikeev, I.N. Pigaleva, M.M. Abramova, O.A. Frolova
Year: 2023
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Volume: 13
Issue: 4s
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Pages: 397-402
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High-temperature annealing of low-activation chromium-manganese austenitic steel leads to discontinuous precipitation of dispersed M23C6 carbides along grain boundaries, micro- and nanotwin boundaries. At coherent twin boundaries, the growth of particles during annealing is limited by cross-sectional dimensions of the twin plates.
I.Y. Litovchenko, S.A. Akkuzin, N.A. Polekhina, K.V. Spiridonova, A.V. Kim, V.V. Osipova, E.N. Moskvichev, V.M. Chernov
Year: 2023
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Volume: 13
Issue: 4s
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Pages: 390-396
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The typical macrostructure of the AK4-1 aluminum alloy with local mixing of the AK12D alloy into it via friction stir processing
G.R. Khalikova, R.A. Basyrova, V.G. Trifonov
Year: 2023
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Volume: 13
Issue: 4
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Pages: 357-361
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The inter-fragment boundary misorientation distributions are close at two temperatures of deformation, except for the high-angle peak associated with the twinning at 0.5Tm (Tm is the melting temperature of copper).
N.Y. Zolotorevsky, V.V. Rybin, E.A. Ushanova, V.N. Perevezentsev
Year: 2023
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Volume: 13
Issue: 4
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Pages: 362-367
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Grain fragmentation in tensile strained copper is orientation dependent
N.Y. Zolotorevsky, V.V. Rybin, E.A. Ushanova, V.N. Perevezentsev
Year: 2023
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Volume: 13
Issue: 4
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Pages: 329-334
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The effect of exposure (30, 60, and 120 min) during the processing in the low-pressure non-self-sustained arc discharge plasma on microstructure and phase composition of the modified surface layers obtained in a Ti-6Al-4V alloy with a preliminary deposited Al coating has been evaluated.
A.A. Nikolaev, K.N. Ramazanov, A.Yu. Nazarov, V.R. Mukhamadeev, M.Yu. Panchenko, E.G. Astafurova
Year: 2023
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Volume: 13
Issue: 4
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Pages: 292-297
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explains the efffects of Ce content on the properties as well as on the formed morphologies and scales.
R.B. Baraldi, D. Silva, G.L. Gouveia, A. Garcia, J.E. Spinelli
Year: 2023
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Volume: 13
Issue: 4
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Pages: 281-285
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The paper describes the two-stage modification of the surface layer of Al-20%Si alloy that combines electroexplosive alloying by an Al-Y2O3 system with subsequent irradiation by pulsed electron beam. Study of the structure and properties of the modified layers of the material under study by the methods of modern physical materials science.
Y.A. Shliarova, V.V. Shlyarov, D.V. Zaguliaev, Y.F. Ivanov, V.E. Gromov
Year: 2023
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Volume: 13
Issue: 3
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Pages: 219-224
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The effects of heat input magnitude and adjustment on microstructure and mechanical characteristics of Al-5%Si and Al-12%Si alloys prepared using electron bean wire feed (EBAM ) and wire-arc additive manufacturing (WAAM) have been investigated.
A.P. Zykova, A.R. Dobrovolsky, V.M. Semenchuk, A.V. Nikolaeva, V.R. Utyaganova, S.Yu. Nikonov, A.V. Chumaevskii, S.Yu. Tarasov
Year: 2023
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Volume: 13
Issue: 3
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Pages: 197-203
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As cast Al-1.8Mn-1.6Cu-0.15Cr-0.15Fe (wt. %) alloy structure consist of aluminum solid solution, eutectic Al6(FeMn) and Al2Cu, as well as Al7Cr and Al20Cu2Mn3 dispersive particles. Radial shear rolling results in partial dissolution of Al20Cu2Mn3 dispersoids, grain refinement to the size of 1.6 μm, increasing yield stress up to 83 MPa and ultimate strength up to 216 MPa. The plasticity of the deformed alloy is 25%.
A.N. Petrova, D.Y. Rasposienko, V.V. Astafyev, A.O. Yakovleva
Year: 2023
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Volume: 13
Issue: 2
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Pages: 177-182
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Nanoporous germanium surface formed by magnetron sputtering and ion implantation
I.M. Klimovich, A.L. Stepanov
Year: 2023
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Volume: 13
Issue: 3
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Pages: 243-248
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It is shown that necessary the homogenization annealing and subsequent quenching for getting one phase state of Ni44.4Mn36.2Sn14.9Cu4.5 alloy.
R.Yu. Gaifullin, K.K. Kirilyuk, I.M. Safarov, I.I. Musabirov
Year: 2023
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Volume: 13
Issue: 2
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Pages: 164-170
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Cyclic voltammograms and Nyquist diagrams, SEM images of microstructures of film samples
R.B. Salikhov, R.A. Zilberg, E.O. Bulysheva, A.D. Ostaltsova, T.R. Salikhov, Y.B. Teres
Year: 2023
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Volume: 13
Issue: 2
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Pages: 132-137
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The structure and properties of AISI 321 steel depends on the level of normal load on the indenter during frictional treatment. Friction treatment with a sliding indenter leads to the formation of a gradient structure with a depth of up to 500 µm.
E.A. Putilova, L.S. Goruleva, S.M. Zadvorkin, P.A. Skorynina, R.A. Savrai, K.D. Krucheva
Year: 2023
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Volume: 13
Issue: 3
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Pages: 191-196
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The effect of combination of isothermal cryorolling at liquid nitrogen temperature to strains ranging from 30 to 90% and subsequent high-dense electropulsing, on the structure and hardness of an initially coarse-grained pure nickel was studied.
M.V. Markushev, I.S. Valeev, E.V. Avtokratova, R.R. Ilyasov, A.K. Valeeva, S.V. Krimsky, O.S. Sitdikov
Year: 2023
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Volume: 13
Issue: 2
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Pages: 126-131
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Superplastic behavior of nickel-based superalloys with ultrafine grain structure.
E.V. Galieva, E.Y. Klassman, R.R. Gabbasov, E.M. Stepukhov, V.A. Valitov
Year: 2023
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Volume: 13
Issue: 1
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Pages: 79-84
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Seebeck coefficient S and the power factor Р for the composite оf CuO - 40%, LiCoO2 - 30%, LSMO - 25%, GeO2 - 5%.
Y.V. Kabirov, M.V. Belokobylsky, V.R. Popov, A.O. Letovaltsev, N.V. Prutsakova, A.L. Nikolaev, E.V. Chebanova
Year: 2023
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Volume: 13
Issue: 2
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Pages: 153-157
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Established that at the increase of the mass fraction of carbon from 0.09% to 0.30% in the as-cast metal, the metal hardness increases. At the same time, the structural-phase composition consists of a pseudo-pearlitic structure (ferrite-nitride mixture) and austenitic structure in different ratios since an increase in the carbon content leads to an increase in the amount of the pseudo-pearlite. The heat treatment of specimens with the mass fraction of carbon of 0.09% and 0.30% at 1250 °C for two hours leads to their complete austenization. In this case, the hardness of steels of both compositions decreases to 22 – 24 HRC (0.09 wt.% of carbon) and to 28 – 30 HRC (0.30 wt.% of carbon).
M.S. Konovalov, V.I. Lad’yanov, M.I. Mokrushina, V.A. Karev
Year: 2023
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Volume: 13
Issue: 1
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Pages: 85-89
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It is shown that with an increase in temperature, load, and holding time, the volume fraction of pores decreases, and the fraction of fiber increases, which leads to an increase in the composite strength. In all cases, the shape of the fracture surface indicates the brittle nature of the composite fracture.
B.I. Atanov, S.N. Galyshev, N.G. Zaripov, U.S. Shayakhmetov, A.R. Khamidullin
Year: 2023
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Volume: 13
Issue: 2
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Pages: 115-120
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The value of the nitrogen compositional stability coefficient has been determined for the alloys of the Fe-Cr-Mn-Mo-N system obtained by self-propagating synthesis, namely, aluminothermy under nitrogen pressure. The obtained results permit to predict the maximum possible content of nitrogen in continuous ingots (without bubbles and gas porosity in the volume) and, consequently, the structural-phase composition of alloy and optimal regimes of alloying.
M.S. Konovalov, V.I. Lad’yanov, M.I. Mokrushina, V.A. Karev
Year: 2023
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Volume: 13
Issue: 2
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Pages: 121-125
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Images of samples obtained at a temperature of +5 ° demonstrate a completely different morphology in comparison with samples obtained at +25°, demonstrate a completely different morphology in comparison with samples
EDX elemental mapping indicated that the particles contain mainly Cu and O in both samples.
I.Yu. Isaeva, G.Yu. Ostaeva, E.A. Eliseeva, A. L. Golovin, A. L. Vasiliev
Year: 2023
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Volume: 13
Issue: 2
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Pages: 149-152
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The properties of Cr,Mg-codoped bismuth tantalate pyrochlore have been investigated
E.A. Serebryakov, A.D. Shpynova, R.I. Korolev, N.A. Sekushin, A.A. Selyutin, B.A. Makeev, N.A. Zhuk
Year: 2023
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Volume: 13
Issue: 1
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Pages: 50-55
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Experimental refinement of monophase state regions on the phase diagrams parts of FePt and CoPt alloys
N.S. Zakharov, I.N. Tikhonova, Y.A. Zakharov, A.N. Popova, V.M. Pugachev, D.M. Russakov
Year: 2022
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Volume: 12
Issue: 4s
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Pages: 480-485
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Microstructure of HIP superalloy and after subsequent hot deformation.
S.K. Mukhtarov, D.A. Karyagin, A.V. Logunov, A.A. Ganeev, R.I. Zainullin, R.V. Shakhov, V.M. Imayev
Year: 2022
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Volume: 12
Issue: 4s
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Pages: 457-462
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HPT at 6 GPa pressure in the range of 0-10 rotations of pre-quenched ingot of the commercial aluminum alloy 1965 resulted in consequential transformation of well-defined dense dislocation wall/cell structure to non-equilibrium nanofragmented one and near two-fold hardenning. The alloy strengthening and/or softening during further natural aging up to 500 hrs were within 10-15% and controlled by simultaneous decomposition of the aluminum solid solution and recovery of its deformation structure.
M.V. Markushev, E.V. Avtokratova, S.V. Krymskiy, V.V. Tereshkin, O.S. Sitdikov
Year: 2022
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Volume: 12
Issue: 4s
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Pages: 463-468
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The process of superplastic forming into a cylindrical matrix of workpieces from the EK61 superalloy with an ultrafine-grained structure has been studied.
R.V. Safiullin, V.A. Valitov, R.Y. Lutfullin, E.V. Galieva, E.Y. Klassman
Year: 2022
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Volume: 12
Issue: 4s
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Pages: 439-444
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Structures of a thin-film high-entropy alloy deposited on steel AISI 321.
Y.F. Ivanov, V.V. Shugurov, E.A. Petrikova, N.A. Prokopenko, A.D. Teresov, O.S. Tolkachev
Year: 2022
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Volume: 12
Issue: 4s
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Pages: 433-438
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Low-heat input friction stir welding/processing of Cu-Cr-Zr alloy produces an ultrafine-grained structure reinforced with Cr and Cu5Zr nanoparticles, resulting in a hardness level of 150-190 HV1.
N.V. Lezhnin, A.V. Makarov, E.G. Volkova, A.I. Valiullin, A.B. Kotelnikov, A.A. Vopneruk
Year: 2022
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Volume: 12
Issue: 4s
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Pages: 428-432
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A ceramic material based on rare-earth zirconates with a pyrochloric structure, possessing phase and structural stability at 1300 °C was obtained. The use of REE oxide concentrate is promising for TBCs with thermal stability above 1200°C.
S.A. Oglezneva, S.E. Porozova, M.N. Kachenyuk, A.A. Smetkin, V.B. Kul’met’eva
Year: 2022
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Volume: 12
Issue: 4
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Pages: 379-384
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A cubic perovskite of complex composition Pb1/3Na1/3K1/3Ta2/3Fe1/3O3-δ (sp. gr. Pm-3m, a = 3.9767(3) Å) was synthesized for the first time by the solid-phase reaction method.
N.A. Zhuk, A.M. Popov, R.I. Korolev, V.V. Moroz, A.A. Selyutin, A.V. Koroleva, N.A. Sekushin, B.A. Makeev
Year: 2022
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Volume: 12
Issue: 4
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Pages: 367-372
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Schematic representation of distribution of microhardness over the sample cross section depending on the annealing temperature.
R.R. Latypova, D.B. Kabirova, N.F. Khayretdinov, R.F. Fazlyakhmetov, M.F. Imayev
Year: 2022
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Volume: 12
Issue: 4s
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Pages: 420-423
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The features and fracture mechanisms of reactor low-activation ferritic-martensitic steel EK-181 after high-temperature thermomechanical treatment and traditional heat treatment are revealed depending on the impact test temperature in the range from -186 to 100°C. The fracture appearance transition temperature is determined by a fractographic investigation.
N.A. Polekhina, V.V. Linnik, I.Y. Litovchenko, K.V. Almaeva, V.M. Chernov, M.V. Leontieva-Smirnova
Year: 2022
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Volume: 12
Issue: 4s
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Pages: 451-456
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The influence of warm plastic deformation by rolling at 600 and 900 °C with a total strain of e = 2 on the microstructure and mechanical properties of the reactor austenitic steel EK-164 has been studied. The resulting fragmented banded microstructure with a well-developed substructure and fine grains provides high strength properties.
S.A. Akkuzin, I.Y. Litovchenko, A.V. Kim, E.N. Moskvichev, V.M. Chernov
Year: 2022
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Volume: 12
Issue: 4s
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Pages: 394-398
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A new low-activation chromium-manganese austenitic steel for nuclear power engineering with an increased manganese content and additional alloying with strong carbide formers has been fabricated. The new steel has improved strength and ductility properties compared to known analogues.
I.Y. Litovchenko, S.A. Akkuzin, N.A. Polekhina, K.V. Almaeva, E.N. Moskvichev, A.V. Kim, V.V. Linnik, V.M. Chernov
Year: 2022
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Volume: 12
Issue: 4s
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Pages: 399-403
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The single-step (low-temperature) homogenization of the Al alloy 1570C, recommended by the alloy developers, did not lead to the complete removal of chemical heterogeneity arising during crystallization. An additional high-temperature annealing step resulted in some reduction in the alloy strength, but was effective in eliminating the chemical heterogeneity of the cast structure and increasing corrosion resistance while maintaining the grain size and dispersity and coherency of the nanosized Al3(Sc,Zr) dispersoids present in the alloy.
E.V. Avtokratova, O.S. Sitdikov, R.R. Zagitov, M.V. Markushev
Year: 2022
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Volume: 12
Issue: 4s
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Pages: 388-393
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Better formability of the novel alloy is mainly due to the high content of the beta phase.
Superplastic forming results in improvement of the microstructure homogeneity.
M.R. Shagiev, A.A. Kruglov, O.A. Rudenko, M.A. Murzinova
Year: 2022
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Volume: 12
Issue: 4
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Pages: 332-335
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We observed the ordered phase particle experimentally by the TEM method. The temperature of the order–disorder phase transition in the Cu-5.9Pd alloy was estimated as Tc ≈ 340°С.
O.S. Novikova, A.E. Kostina, E.G. Volkova, Y.A. Salamatov, A.V. Glukhov, A.Y. Volkov, V.V. Marchenkov, V.S. Gaviko, Y.M. Ustyugov
Year: 2023
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Volume: 13
Issue: 1
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Pages: 3-8
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Thermal conductivity of diamond materials in transition from monocrystals to nanostructured nanodiamond composites declines two orders down due to the change in dominating factor that contributes to the thermal resistance – phonon scattering upon inner defects is changed by domination of phonon scattering at boundaries.
V.A. Plotnikov, D.G. Bogdanov, A.S. Bogdanov, A.A. Chepurov, S.V. Makarov, A.P. Yelisseyev, E.I. Zhimulev, V.G. Vins
Year: 2022
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Volume: 12
Issue: 4
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Pages: 350-353
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HAADF image of the cross section of the NiCrBSiC coating
L.E. Afanasieva, I.S. Pavlov
Year: 2022
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Volume: 12
Issue: 4
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Pages: 287-291
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XRD patterns from annealed Cu-Al-Cu samples after conventional (left pattern) and accumulative (right pattern) HPT.
V.N. Danilenko, L.U. Kiekkuzhina, N.Y. Parkhimovich, D.V. Gunderov
Year: 2022
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Volume: 12
Issue: 4
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Pages: 276-281
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SEM images of the graphene nanofilm in the matrix of AlMgGr composite and after it dissolution in 20% HCl. Raman spectrums of the graphene nanofilms in AlMgGr composite and the graphene films obtained after dissolution of the composite in 20% HCl.
I.G. Brodova, L.A. Yolshina, D.Y. Rasposienko, R.V. Muradymov, I.G. Shirinkina, S.V. Razorenov, A.N. Petrova, E.V. Shorokhov
Year: 2022
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Volume: 12
Issue: 4
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Pages: 269-275
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Friction stir processing mode (ω = 2000 rpm, ν = 8 mm/min) and hardening T6 heat treatment were developed, which makes it possible to achieve the formation of a monolithic defect-free structure in the AK12D (Al–12.8Si–1.67Cu–1.03Ni–0.84Mg–0.33Mn–0.23Co–0.24Fe) alloy with a high level of mechanical properties.
G.R. Khalikova, G.R. Zakirova, A.I. Farkhutdinov, E.A. Korznikova, V.G. Trifonov
Year: 2022
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Volume: 12
Issue: 3
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Pages: 255-260
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