Принятые к публикации статьи

Y.A. Zakharov, N.V. Ivanova, G.Y. Simenyuk, M.V.Lomakin, T.O. Sergina, E.V. Kachina, V.G. Dodonov. Letters on materials. (), (2023). Morphological (SAXS) and electrochemical (CV, EIS) properties of nanostructured composites Au/MWCNT and MnxOy/MWCNT prepared by means of multiple layer-by-layer auto-reduction (HAuCl4 or KMnO4) were investigated, nanoparticles of fillers are formed in both channels and on external surface of the MWCNT. The maximum effect of increase in electric capacitance of the composites with 4 wt % Au and 5 wt.% MnxOy with respect to capacitance of MWCNT is 1.2 and 2.9, respectively, in the region of the low scan rates.

Antibacterial nanospike morphology on nanostructured titanium obtained by Ar bombardment

The picture shows the effect of upset forging and heat treatment on yield strength (YS) and ultimate tensile strength (UTS) of the TNZ γ-TiAl alloy in the temperature range of the brittle-ductile transition.

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Results of calculation of diffusion characteristics of grain boundaries in vanadium.

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.

The combination of hot MIF and subsequent cryorolling is a highly efficient method for producing (ultra)fine grained aluminum sheets from 1570C alloy with unique mechanical properties.

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.

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).

Experimental results allowed the explanation of the nature of GMS as the mechanism of fragmentation under intense loads.

After 10 passes of friction stir processing (FSP) three phases are observed - the aluminum matrix, NiO and Al3Ni particles. It should be noted that there are no traces of NiO remaining inside the Al3Ni particles. Thus, an acceleration of the chemical reaction occurred between the 4th and 10th passes of friction stir processing (FSP), leading to the formation of a significantly larger quantity of Al3Ni and Al2O3 particles.

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.

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.

The influence of the rate of change in temperature and size of nickel nanoparticles on the features of the nanocrystalline structure formed during crystallization and devitrification was studied by the method of molecular dynamics

BSE images of HIP superalloy VV751P and after forging and heat treatment.

High-rate SP at a temperature of 300°C is carried out by combining cooperative grain-boundary sliding and intragranular dislocation slip in UFG Al-Mg-Mn alloy

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)

The Ti-50.8 at.% Ni (TiNi) medical alloy wire samples with bioinert PVD-coatings of different compositions were studied. The elastic-force characteristics (phase yield strength σM, mechanical hysteresis value ΔH, residual deformation εres, and unloading plateau stress σc) of TiNi have been studied based on the stress-strain curves obtained at different temperatures (5°С, 19°С, 37°С, and 60°С).

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.

The effect of multi-directional isothermal forging on the microstructure and mechanical properties of ferritic-martensitic steel EK-181 was studied. As a result, a submicrocrystalline fragmented structure with fine M23C6 particles was formed, which provides an increase in strength properties.

The typical macrostructure of the AK4-1 aluminum alloy with local mixing of the AK12D alloy into it via friction stir processing

Microstructure of solid-state joint of dissimilar EK61 and EP975 Ni-based superalloys after pressure welding as well as following heat treatment.

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).

The morphological features of the structures of the adsorbed substance on the surface of freshly cleaved mica in contact with the three-component water-surfactant-oil system were studied using atomic force microscopy. The mechanism of adsorption of anionic surfactants on the mica surface in the presence of cations in solution has been confirmed.

Crystallographic texture is an important characteristic of all anisotropic polycrystalline materials. The formation of recrystallization texture in Russian zirconium alloys is analyzed using Debye rings obtained by shooting with a synchrotron beam, the traditional X-ray method, and backscattered electron diffraction.

1. A theoretical study of new autointercalated carbon compounds formed from hexagonal graphyne layers has been performed. 2. The most stable nanostructured materials should be composed of autointercalated alpha-graphyne-1. 3. A porous orthorombic three-dimensional phase can be obtained on the basis of alpha-graphyne-1.

Elements composition and coating mechanism formation on WC-8%Co and WC-15%TiC-6%Co hard alloys

Grain fragmentation in tensile strained copper is orientation dependent

3D view of topological charge phase diagram. Axes are parameters of exchange and magnetoelectric interaction, height is absolute value of topological charge in ground state.

It has been established that the localization of crystalline LaB6 nanoparticles determines the work function of the hybrid carbon nanomaterial single-walled nanotubes/graphene. As the mass fraction of LaB6 nanoparticles increases, the work function decreases.

Thin film with antidote lattice.

Mechanical properties, corrosion resistance and biocompatibility in vitro of pure Zn processed by high pressure torsion (HPT) were studied. Grain refinement and texture changes caused by HPT increase strength and ductility. HPT does not worsen the RBC hemolysis and ML viability of pure Zn. HPT insignificantly increases the degradation rate.

The difference between the mechanisms of crystallization of nanoparticles upon cooling from the melt and upon heating from low temperatures during devitrification is studied

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.

explains the efffects of Ce content on the properties as well as on the formed morphologies and scales.