Materials physics and mechanics

RAR RUS 1-10 Saint Petersburg State University E.G. Zemtsova

St.Petersburg, Russia

St. Petersburg State University Petrov

St. Petersburg, Russia

St. Petersburg State University Kirichenko

St. Petersburg, Russia

7005573911 St.Petersburg State University Morozov N.F.

St.Petersburg, Russia

St. Petersburg State University of Film and Television Kudymov

St. Petersburg, Russia

St.Petersburg State University Arbenin

St.Petersburg, Russia

Institute for Problems of Mechanical Engineering of the RAS Semenov

St.Petersburg, Russia

Saint Petersburg State University Smirnov

St.Petersburg, Russia

Study of the microstructure effect of SPD-treated titanium on microhardness and corrosion resistance in physiological environments for implantology purposes Increasing the duration and quality of human life requires solving a number of medical and materials science problems, in particular, the creation of materials designed for long-term work in contact with the biological environment. When creating such materials for medical devices, it is necessary to take into account that they must meet strict requirements, namely, be biologically compatible with tissues, have corrosion resistance to various biological fluids and have increased wear resistance. The study of the effect of Ti microstructure on microhardness and its corrosion resistance in physiological environments is necessary to create implants designed for long-term work in contact with the biological environment of the body. In accordance with this, the purpose of this work was to establish the nature of the relationship between the structural properties of ultrafine-grained Ti with different sizes of crystallites (grains) obtained using equal-channel angular pressing (ECAP) of different intensity, namely with a different number of processing cycles, on the microhardness and stability of Ti in a corrosive environment. 10.18149/MPM.5142023_1 ultrafine-grained titanium; corrosion resistance; microhardness; intense plastic deformation; implants https://mpm.spbstu.ru/article/2023.96.1/ 1-E_G_-Zemtsova%2C-et-al.pdf

RAR RUS 11-22 Siddaganga Institute of Technology Adaveesh

Karnataka, India

Siddaganga Institute of Technology Prabhushankar

Karnataka, India

0000-0002-8248-7603 Aircraft Research and Design Centre, Hindustan Aeronautics Limited Nagaral Madeva

Bangalore, India

Tribological and tensile behaviour of Si3N4 reinforced Cu-Sn matrix composites In the present research, Cu-Sn alloy with 7.5 wt. % of Si3N4 particles reinforced composites were fabricated by using conventional stir casting method. As-cast Cu-8 %Sn alloy and Cu-8 %Sn alloy with 7.5 wt. % of Si3N4 reinforced composites were evaluated for microstructural studies using SEM and EDS, density, tensile properties and wear behaviour as per ASTM method. Cu-Sn alloy with 7.5 wt. % of silicon nitride particles reinforced composites shown lesser densities as compared to the base Cu-Sn alloy. Further, these composites were exhibited superior tensile strength with slight reduction in the ductility. Pin on disc wear apparatus was used to conduct the wear tests at varying loads and speeds. The wear resistance of Cu-Sn alloy increased with the incorporation of Si3N4 particles. Further, applied load and speeds were impacted in the wear behaviour of Cu-Sn alloy composites. As load and speed increased, there was more material loss in as-cast alloy and its composites. Tensile fractured surfaces indicated various fracture modes in Cu-Sn alloy and composites. 10.18149/MPM.5142023_2 Cu-Sn alloy; Si3N4; tensile behaviour; wear; fractography https://mpm.spbstu.ru/article/2023.96.2/ 2-Adaveesh%2C-et-al.pdf

RAR RUS 23-37 Motilal Nehru National Institute of Technology Allahabad Gupta

Uttar Pradesh, India

0000-0001-6174-364X Motilal Nehru National Institute of Technology Allahabad Gupta

Uttar Pradesh, India

Optimization of wear behaviour of hybrid Al(6061)-Al2O3-B4C composites through hybrid optimization method Al-based hybrid metal matrix composites were prepared through stir casting method by reinforcing aluminium oxide or alumina (Al2O3) and boron carbide (B4C) particles into Al matrix with their varying proportions. The wear analysis of prepared hybrid MMCs was performed using the Pin-on-disc method and wear parameters were also optimized with objectives of minimizing the weight loss (WL) and coefficient of friction (COF) through integrated Grey-Taguchi techniques. Morphological analysis was also performed to explain the wear mechanism through a Scanning electron microscope (SEM). The maximum improvement in the weight loss of 71.33 % and in coefficients of friction of 35.35 % was found for the hybrid composites as compared to that of Al-alloy matrix. Further, the ANOVA results suggested that compositions has the maximum contribution of 94.47 %, sliding speed has 1.06 %, sliding distance has 1.04 %, and load has 3.16 % on the wear performance of the present hybrid composites. 10.18149/MPM.5142023_3 metal matrix composites; hybrid composites; aluminium; wear analysis; optimization; scanning electron microscope https://mpm.spbstu.ru/article/2023.96.3/ 3-Gupta%2C-et-al.pdf

RAR RUS 38-49 Ufa University of Science and Technology Medvedev Andrey E.

Ufa, Russia

LLC Attestation Center Svarka Tech Service Atroshchenko

Ufa, Russia

LLC Attestation Center Svarka Tech Service Selivanov

Ufa, Russia

Ufa University of Science and Technology Bogdanov

Ufa, Russia

LLC Krus-Zapad Gorbatkov

Ufa, Russia

LLC Attestation Center Svarka Tech Service Logachev

Ufa, Russia

LLC Attestation Center Svarka Tech Service Lobachev

Ufa, Russia

LLC Attestation Center Svarka Tech Service Sadrislamov

Ufa, Russia

The influence of friction stir processing on the microstructure and properties of the AD31T alloy The effect of friction stir processing treatment (FSP) on the microstructure and physical and mechanical properties of an aluminum alloy of the Al-Fe-Mg-Si system (AD31T alloy) has been studied. In particular, the influence of various processing modes on the formation of structural and bulk defects in the stir zone (SZ) was studied. The optimal technological parameters that ensure the formation of a tool with a relatively homogeneous defect-free structure for a given tool geometry is a tool rotation speed of 1120 rpm at a tool linear speed of 200 mm/min. It is shown that an increase in the linear speed of the tool in the range of 50–200 mm/min leads to a decrease of the heat-affected zone (HAZ), a smaller size of volume defects in the SZ, and more uniform deformation. The microstructure analysis data is confirmed by the microhardness and electrical conductivity measurement values. It is shown that the decrease in the electrical conductivity in the SZ does not exceed 2 % of the electrical conductivity of the base material. 10.18149/MPM.5142023_4 FSP; Al-Mg-Fe-Si; aluminium alloy; fine-grained structure: microhardness; electrical conductivity https://mpm.spbstu.ru/article/2023.96.4/ 4-A_E_-Medvedev%2C-et-al_F.pdf

RAR RUS 50-65 Khalsa College of Engineering and Technology Amritsar Agnihotri

Punjab, India

I. K. Gujral Punjab Technical University Kapurthala Kalsi

Punjab, India

University Institute of Engineering and Technology Kansal

Punjab, India

Study of burnishining effect on the thermal spray coatings The present study is focused on the protection of alloys against hot corrosion by burnishing the thermal spray coatings. The research study aims to appraise the hot corrosion behavior of WC-Co coatings deposited on boiler steel SA213-T11 using a High-Velocity Oxy-Fuel process (HVOF) followed by a burnishing process. This study also aims to develop a suitable protective burnished-coated material system to enhance the life of metals and alloys operating under a hot corrosion environment. Therefore, the performance of the thermal spray coating followed by the burnishing process is required to be studied for the primary modes of degradation against oxidation and hot corrosion modes of material failure. Various microstructural and mechanical characterizations techniques such as X-Ray Diffractometry (XRD), Scanning Electron Microscopy (SEM), Optical Microscopy, and Microhardness tester were employed to evaluate coating properties. The performance of the thermal spray coating followed by the burnishing process is studied for the primary modes of degradation against oxidation and hot corrosion modes of material failure. 10.18149/MPM.5142023_5 HVOF; burnishing; WC-Co; thermal spray coatings https://mpm.spbstu.ru/article/2023.96.5/ 5-Atul-Agnihotri%2C-et-al.pdf

RAR RUS 66-75 Ioffe Institute Blokhin

St.Petersburg, Russia

Ioffe Institute Levin

St. Petersburg, Russia

Ioffe Institute Epoletov

Saint Petersburg, Russia

Ioffe Institute Kuzmenkov

St. Petersburg, Russia

Ioffe Institute Blokhin

St.Petersburg, Russia

Ioffe Institute Bobrov

St. Petersburg, Russia

Ioffe Institute Kovach

Saint Petersburg, Russia

Ioffe Institute Maleev

Saint Petersburg, Russia

Alferov University Nikitina

Saint Petersburg, Russia

Connector Optics LLC Andryushkin

St. Petersburg, Russia

Submicron Heterostructures for Microelectronics Research and Engineering Center, Russian Academy of Sciences (RAS) Vasil’ev

Saint Petersburg, Russia

JSC OKB-Planeta Voropaev

Veliky Novgorod, Russia

Ioffe Institute Ustinov V.M.

St.Petersburg, Russia

Peculiarities of the two-stage Zn diffusion profile formation from vapor phase into InGaAs/InP heterostructure for avalanche photodiode fabrication In this paper was presented the research results of the dependence of the InGaAs surface layer thickness on the process of Zn diffusion into InGaAs/InP heterostructures from a diethylzink source. One-dimensional distribution profiles of electrically active dopants were obtained by electrochemical volt-capacitive profiling. The influence of technological parameters (process time, temperature, and pressure in the reactor) on the hole concentration and the depth of the p-type dopant was studied. The principal possibility of simultaneously forming a highly doped InGaAs:Zn layer has been experimentally shown due to the higher Zn solubility limit in InGaAs compared to InP and to implement a two-stage p-type dopant profile in one Zn diffusion process by controlling the thickness of the InGaAs surface layer. 10.18149/MPM.5142023_6 zinc diffusion; diethylzinc; indium phosphide https://mpm.spbstu.ru/article/2023.96.6/ 6-S_A_-Blokhin%2C-et-al.pdf

RAR RUS 76-84 ITMO University Sokura

St.Petersburg, Russia

ITMO Univesity Kremleva

St.Petersburg, Russia

F-1445-2014 7202768874 0000-0003-3738-408X ITMO University Romanov Alexey alexey.romanov@niuitmo.ru

St.Petersburg, Russia

The effect of ZnO cupping layer on the formation of sol-gel synthesized Ag nanoparticles Samples containing Ag nanoparticles (NPs) in a ZnO matrix were produced using a sol-gel method, with varying the annealing temperature and the thickness of the ZnO cupping layer. The dependence of the optical and structural properties of the samples on the silver diffusion was studied. As a result of annealing at temperatures of 570-650 °С, a long-wavelength shift of the plasmon absorption peak of NPs was observed due to an increase in their average size, as well as an increase in the intensity of the absorption peak due to a narrower size distribution of NPs. The transformation of the nanoparticle shape and size during annealing was shown to result from the diffusion of silver, whereas the ZnO cupping layer and its thickness was proved to control these processes. 10.18149/MPM.5142023_7 Ag nanoparticles; zinc oxide; sol-gel synthesis; plasmonics; scanning electron microscopy; transmission electron microscopy https://mpm.spbstu.ru/article/2023.96.7/ 7-L_A_-Sokura%2C-et-al.pdf

RAR RUS 85-95 0000-0001-7577-1262 Ioffe Institute Klyachkin L.E.

St.Petersburg, Russia

0000-0001-8286-3472 Ioffe Institute Bagraev N.T.

St.Petersburg, Russia

0000-0002-4667-7004 Ioffe Institute Malyarenko A.M.

St.Petersburg, Russia

Spin transistor effect in edge channels of silicon nanosandwiches The conductance dependences of the edge channels of silicon nanosandwich structures (SNS) on the vertical gate voltage Vg are studied. The experiments are carried out in such a range of Vg, in which the two-dimensional density of holes p2D is stable that made it possible to avoid the changes of the Fermi level position and thereby to unambiguously identify the Aharonov–Casher oscillations. The effect of a spin field-effect transistor at a high temperature (T = 77 K) is demonstrated, which manifests itself in the form of Aharonov–Casher oscillations of longitudinal conductance depending on Vg, which controls the Bychkov–Rashba spin-orbit interaction. This experiment became possible due to the high degree of spin polarization of holes and the long spin-lattice relaxation time because of the extremely small width of the silicon quantum well and the narrowness of its edge channels, which is ensured by the properties of the negative-U-barriers limiting them effectively decreasing the electron-electron interaction. 10.18149/MPM.5142023_8 silicon nanosandwich; edge channel; Aharonov–Casher oscillations; Bychkov–Rashba spin-orbit interaction; spin field-effect transistor https://mpm.spbstu.ru/article/2023.96.8/ 8-Klyachkin%2C-et-al.pdf

RAR RUS 96-106 Khristianovich Institute of Theoretical and Applied Mechanics of the Siberian Branch of the Russian Academy of Sciences Bardakhanov

Novosibirsk, Russia

Khristianovich Institute of Theoretical and Applied Mechanics of the Siberian Branch of the Russian Academy of Sciences Trufanov

Novosibirsk, Russia

Budker Institute of Nuclear Physics of the Siberian Branch of the Russian Academy of Sciences Chakin

Novosibirsk, Russia

Khristianovich Institute of Theoretical and Applied Mechanics of the Siberian Branch of the Russian Academy of Sciences Gaponenko

Novosibirsk, Russia

Gas phase large-scale synthesis of Silicon carbide nanowires by industrial electron accelerator This study focuses on the development of a novel and simple catalyst-free one-stage gas phase synthesis process at atmospheric conditions for silicon carbide based nanomaterials. A mixture of high-purity quartz sand and graphite powder is heated as in air as under argon flow at atmospheric pressure using an industrial accelerator of nominal power 100 kW with a relativistic electron beam of continuous action. The carbothermal reduction reaction of silica occurs and micro granular hexagonal silicon carbide powder produced along with cubic phase SiC nanowires (SiCNWs) for different combinations of the process parameters. The mechanism of the formation of SiCNWs under gas flow is proposed, where Si nanoparticles act as an origin for the SiCNWs grow. The observed productivity shows that the process can be used for the large-scale production of high quality SiC nanowires as well as nano and micro powders of SiC. 10.18149/MPM.5142023_9 silica; carbon; silicon carbide; nanowires; SiCNWs; industrial electron accelerator https://mpm.spbstu.ru/article/2023.96.9/ 9-Bardakhanov%2C-et-al.pdf

RAR RUS 107-117 Peter the Great St. Petersburg Polytechnic University Kondrateva

St. Petersburg, Russia

Peter the Great St. Petersburg Polytechnic University Strekalovskaya

St. Petersburg, Russia

Peter the Great St. Petersburg Polytechnic University Babuyk

Saint Petersburg, Russia

Alferov St. Petersburg National Research Academic University Kuznetsov

St. Petersburg, Russia

Peter the Great St. Petersburg Polytechnic University Filatov

St. Petersburg, Russia

Peter the Great St. Petersburg Polytechnic University Gabdullin

St. Petersburg, Russia

Laser induced modification of nickel surface for non-enzymatic glucose detection This article proposes for consideration the experimental results of applying the method of laser surface modification for the manufacture of a highly sensitive enzyme-free sensitive layer of the working electrode of a glucose sensor using nickel oxide as an example. This technology can be integrated into the lab-on-a-chip concept. Using cyclic voltammetry, the sensitivity of the proposed system to the addition of microdoses of glucose to the solution for unmodified and laser-modified nickel surfaces was studied. The formed structure of metal oxide sensors was studied for the determination of D-(+)-glucose in the range of analyte concentrations up to 1.5 µM. In addition, the sensitive layers made using the proposed technology showed durability and reproducibility of properties. This allows us to conclude that the demonstrated method of laser-induced metal surface modification is suitable for the production of a wide range of enzyme-free glucose sensors. 10.18149/MPM.5142023_10 surface modification; laser-driven surface alteration; nickel surface; glucose detection; electrocatalytic oxidation https://mpm.spbstu.ru/article/2023.96.10/ 10-Kondrateva%2C-et-al.pdf

RAR RUS 118-129 Far Eastern Federal University Barbotko

Vladivostok, Russia

Far Eastern Federal University Lyubimova

Vladivostok, Russia

Far Eastern Federal University Ostanin

Vladivostok, Russia

Structural and mechanical relaxation on annealing in glass-metal layered composites The technological modes of annealing of the layered glass-metal composite material – glass-metal composite – which include heating-up to the glass softening point and aftercooling with annealing are investigated. The mathematical model of stress evolution is considered. The complexity in modeling is caused by the combined deformation of the glassy layer and the elastic-plastic layer with non-uniform temperature changes. Structural and mechanical relaxation processes in the glass transition interval are described within the framework of the relaxation kinetic theory of glass transition. The algorithm for calculations of technological and residual stresses in glass-metal composite, at different modes, is proposed. A comparison of the numerical method with the analytical solution obtained for constant thermomechanical parameters of materials is presented. The practical implications are in the possibility of modeling technological and residual stresses in laminated structural cylindrical systems functioning during cyclic heating-cooling to high temperatures, including glass transition and plastic deformation of the layers. 10.18149/MPM.5142023_11 glass-metal composite; structural and mechanical relaxation https://mpm.spbstu.ru/article/2023.96.11/ 11-Barbotko%2C-et-al-.pdf

RAR RUS 130-141 Brest State Technical University Verameichyk

Brest, Belarus

Brest State Technical University Neroda

Brest, Belarus

Brest State Technical University Holodar

Brest, Belarus

The influence of the altered structure zone characteristics after the material jet treatment on the samples stress state during tensility The article investigates the influence of the mechanical characteristics (elasticity module, Poisson coefficient) of the material altered structure zones, which arise after heat treatment by concentrated high-energy impact. For rectangular samples, two forms of the structure formation zone are analyzed - rectangular and crescent-shaped with a zone of processed material in the form of a semicircle. MSC NASTRAN and ANSYS Workbench software packages were used as calculation packages. A computer simulation of the stress-strain state of samples with one or more treated tracks (along the entire length and on the part of the length) under tension was carried out. The influence of the zone size and the distance between them is investigated. An insignificant effect of the distance between the tracks on the voltages has been established. The stress concentration coefficients in the vicinity of the treatment zones are determined. The transverse stresses are studied depending on the mechanical characteristics of the material. 10.18149/MPM.5142023_12 mechanical characteristics of the material; stress-strain state; stress concentration coefficient; finite element method; local impact https://mpm.spbstu.ru/article/2023.96.12/ 12-Verameichyk%2C-et-al.pdf

RAR RUS 142-159 St.Petersburg State University Nechunaev

St.Petersburg, Russia

St. Petersburg State University Naumova

St. Petersburg, Russia

St. Petersburg State University Dorofeev

St. Petersburg, Russia

The effect of mass collapse under hypervelocity impact of solid paraboloid into a thin screen In this article, an impact of a solid-paraboloid at a speed of 4190 m/s into a thin aluminum plate is numerically simulated. Such high-speed impacts are dangerous as they can damage the second screen of the Whipple shield. Whipple shield, so-called dual-wall system, is widely used to protect spacecraft from space debris. This paper reviews the mechanism of the interaction between the projectile and bumper, the movement and diffusion of the debris cloud. Numerical simulation for high-speed impact of a hyperboloid on an aluminum alloy plate is presented. Central and non-central impacts are discussed. It is shown that some types of collisions are very dangerous because significant mass of fragments is concentrated on the impact axis. The same calculations were conducted for the sphere of comparable mass, results were compared. 10.18149/MPM.5142023_13 hypervelocity impact; space debris; mass collapse effect https://mpm.spbstu.ru/article/2023.96.13/ 13-Nechunaev%2C-et-al.pdf

RAR RUS 160-171 Voronezh State University of Engineering Technology Chernyshov

Voronezh, Russia

Voronezh State Technical University Goryainov

Voronezh, Russia

Voronezh State University of Engineering Technology Kovaleva

Voronezh, Russia

Simulation of the stress-strain state of a rectangular bar using fast trigonometric interpolation in various statements of boundary value problems The problem of stresses in a rectangular bar is considered in three statements: 1) with assignment on all boundaries of displacements, 2) stresses and 3) with mixed boundary conditions. The solution is represented by a fast expansion whose coefficients were determined by fast trigonometric interpolation. The solution of the boundary value problem with Dirichlet conditions is the most accurate of the three considered boundary value problems. Compared with this problem, the accuracy of determining the components of the stress tensor and the residual of the Lamé equations in the other two boundary value problems drops by an order of magnitude. The largest residual of the Lamé equilibrium equations is observed in the boundary value problem with given stresses on all sides of the rectangle. Computational experiments showed that the aspect ratio of the rectangle affects the qualitative form of the stress intensity distribution and the location of points with the maximum stress intensity. Among all rectangular sections with different overall dimensions, but the same sectional area, the smallest value of is observed in a bar with a square section. 10.18149/MPM.5142023_14 displacements; stress tensor components; Lamé equations; fast expansions; fast trigonometric interpolation; boundary value problems; high accuracy https://mpm.spbstu.ru/article/2023.96.14/ 14-Chernyshov%2C-et-al.pdf

RAR RUS 172-185 Centre de Recherche en Technologie des Semi-conducteurs pour l’Energétique (CRTSE) Larabi

Alger, Algeria

Centre de Recherche en Technologie des Semi-conducteurs pour l’Energétique (CRTSE) Mebarki

Alger, Algeria

The Center for the Development of Advanced Technologies Abdellaoui

Alger, Algeria

Université Abou Bekr Belkaid Tlemcen Mahmoudi

Tlemcen, Algeria

Centre de Recherche en Technologie des Semi-conducteurs pour l’Energétique (CRTSE) Merazga

Alger, Algeria

Centre de Recherche en Technologie des Semi-conducteurs pour l’Energétique (CRTSE) Gabouze

Alger, Algeria

Ab initio study of Hydrogen and Lithium behaviors in Cu2O Nowadays, produced green energy requires efficient storage, the materials to be used must be at unbeatable prices. Lithium and hydrogen are two candidates in several applications in the field of renewable energies. The effect of Hydrogen or Lithium on the electronic, magnetic and optical properties of cuprous oxide Cu2O has been investigated using the projected augmented wave (PAW) based on the density functional theory (DFT) formalism, within the generalized gradient approximation (GGA). Different concentrations of hydrogen and lithium were taken into consideration. The calculated formation energies indicate that the H-Cu2O system is stable for all hydrogen concentrations. The density of electronic states calculations show that Cu2O is p-type and it keeps the same type after hydrogen or lithium incorporation. The correlation of the obtained results gives us more precision on the physical properties of H or Li: Cu2O. 10.18149/MPM.5142023_15 Cu2O; Hydrogen; Lithium; energy storage; DFT https://mpm.spbstu.ru/article/2023.96.15/ 15-Larabi%2C-et-al.pdf