https://www.elibrary.ru/title_about_new.asp?i
1605-8119
Materials physics and mechanics
38
1
2018
1-130
RAR
RUS
1-10
Peter the Great St. Petersburg Polytechnic University
Popovich
St.Petersburg, Russia
Peter the Great St. Petersburg Polytechnic University
Sufiiarov
St.Petersburg, Russia
Peter the Great St. Petersburg Polytechnic University
Borisov
St.Petersburg, Russia
Peter the Great St. Petersburg Polytechnic University
Polozov
St.Petersburg, Russia
Peter the Great St. Petersburg Polytechnic University
Masaylo
St.Petersburg, Russia
Design and manufacturing of tailored microstructure with selective laser melting
The current paper presents the results of a complex investigation of effect of Selective Laser Melting process parameters on microstructure and properties of Inconel 718 bulk specimens. The possibility of obtaining bulk specimens with tailored microstructure was studied. The specimens with tailored microstructure were obtained and studied. It was shown that after heat treatment and hot isostatic pressing the differences in microstructure and mechanical properties of fine-grained and coarse-grained areas still remain in place. Finally,the feasibility of applying the developed approach was shown by manufacturing a gas-turbine engine blade with tailored microstructure in specific areas.
10.18720/MPM.3812018_1
additive manufacturing; selective laser melting; Inconel 718; EBSD; turbine blade
tailored microstructure
https://mpm.spbstu.ru/article/2018.63.1/
MPM138_01_popovich.pdf
RAR
RUS
11-15
Peter the Great St. Petersburg Polytechnic University
Koltsova
St.Petersburg, Russia
Peter the Great St. Petersburg Polytechnic University
Breki
St.Petersburg, Russia
Peter the Great St. Petersburg Polytechnic University
Larionova
St.Petersburg, Russia
Peter the Great St. Petersburg Polytechnic University
Tolochko
St.Petersburg, Russia
Operational characteristics of the composite aluminum - carbon nanofibers
The operational properties of aluminum-based composites reinforced by carbon nanostructures were considered. It was determined that increasing of carbon content in the sample leads to reduction of the coefficient of friction. The determining factor affecting the wear resistance is the thermal conductivity of the material.
10.18720/MPM.3812018_2
metal matrix composite; aluminum; carbon nanofibers; thermal conductivity; wear
https://mpm.spbstu.ru/article/2018.63.2/
MPM138_02_koltsova.pdf
RAR
RUS
16-25
Peter the Great St. Petersburg Polytechnic University
Rudskoy
Andrey
St.Petersburg, Russia
T-5749-2017
6602123579
0000-0002-2102-1076
Peter the Great St. Petersburg Polytechnic University
Kodzhaspirov
Georgij
kodjaspirov@spbstu.ru
St.Petersburg, Russia
VŠB – Technical University of Ostrava
Kliber
Ostrava – Poruba, Czech. Republic
University of Patras
Apostolopoulos
Greece
Thermomechanical processing Пf steels and alloys physical foundations, resource saving technique and modelling
The physical fundamentals, resource-saving technique and modelling of Thermo- mechanical Processing (TMP) applied to steels and alloys are described. Structural and phase transformations under TMP and their role in formation of final structure and mechanical properties in the different steels and alloys are presented. The basic physical principles of TMP as a base for developing of new resource-saving technologies of metal productsmanu-facturing and examples of industrial application are presented. Different TMP schemes developed for producing of bar and sheet rolling products, annular billets cylindrical billets with variable sections of profile are demonstrated. Modelling, including Physical and Numerical simulation, Experimental Planning and FEM applied to control structure and mechanicalproperties of TMP treated products are presented.
10.18720/MPM.3812018_3
thermomechanical processing (TMP); physical foundations; steels; dynamic recrystallization
https://mpm.spbstu.ru/article/2018.63.3/
MPM138_03_rudskoi.pdf
RAR
RUS
26-32
Peter the Great St. Petersburg Polytechnic University
Bobrynina
St.Petersburg, Russia
Peter the Great St. Petersburg Polytechnic University
Larionova
St.Petersburg, Russia
Peter the Great St. Petersburg Polytechnic University
Koltsova
St.Petersburg, Russia
Brandenburgische Technische Universität Cottbus-Senftenberg
Ginzburg
Germany
Brandenburgische Technische Universität Cottbus-Senftenberg
Michailov
Germany
Effect of alumina addition on weld deposits microstructure at the welding of carbon steel
The formation of acicular ferrite in the structure of weld deposits when welding carbon steels is often associated with the introduction of nonmetallic additives into the electrode material. Fe–alumina composite powders with alumina particles less than 1 μm were used as a filler for cored welding wire and the influence of aluminum oxide additives up to 2,5 wt.% on the structure of the welded seam was studied. It was shown that the addition of aluminum oxide to the welding wire led to the initiation of the formation of intragranular acicular ferrite in the weld deposit and to a more even distribution of hardness through the zones of weld seam.
10.18720/MPM.3812018_4
acicular ferrite; alumina; welding; carbon steel
https://mpm.spbstu.ru/article/2018.63.4/
MPM138_04_bobrynina.pdf
RAR
RUS
33-39
Mechanical Engineering Research Institute of RAS
Kirikov
Nizhny Novgorod, Russia
Mechanical Engineering Research Institute, Russian Academy of Science
Svirina
Nizhni Novgorod, Russia
The influence of different types of mesodefects on the formation of strain induced broken dislocation boundaries at the faceted grain boundary
In this paper we analyze mesodefects accumulating during plastic deformation on the faceted high angle grain boundaries. It is shown that the system of mesodefects can be represented as a set of linear mesodefects of the rotational type (junction disclinations), and planar mesodefects of the shear type (uniformly distributed dislocations with Burgers vector lying in the plane of the facet). The process of formation of broken dislocation boundaries in the elastic fields of various configurations of the abovementioned mesodefects is studied within the framework of computer simulation.
10.18720/MPM.3812018_5
fragmentation; broken dislocation boundaries; mesodefects; computer simulation
https://mpm.spbstu.ru/article/2018.63.5/
MPM138_05_kirikov.pdf
RAR
RUS
40-47
Peter the Great St. Petersburg Polytechnic University
Mishin
St.Petersburg, Russia
Peter the Great St. Petersburg Polytechnic University
Shishov
St.Petersburg, Russia
BECORP LTD
Minchena
Hatfield, United Kingdom
Technique of durability estimation for thin beryllium foils during their work in X-ray detectors
The stress-strain state for thin beryllium windows of circular shape under cyclic loading by external pressure was calculated using finite element method. The technique for estimating the beryllium window’s fracture probability was proposed. Technique is to compare the accumulated plastic strain in a foil with a certain value of the critical plastic strain, determined experimentally by foil samples bending tests. An experimental study of the durability for beryllium windows with a thickness of 8 μm under cyclic loading with external pressure was performed. Good convergence between the predicted and the fact number of load cycles without fracture was established.
10.18720/MPM.3812018_6
thin beryllium foils; beryllium fracture; beryllium cyclic deformation; beryllium X-ray windows
https://mpm.spbstu.ru/article/2018.63.6/
MPM138_06_mishin.pdf
RAR
RUS
48-53
Kalashnikov Izhevsk State Technical University
Murav'ev
Izhevsk, Russia
Kalashnikov Izhevsk State Technical University
Murav'eva
Izhevsk, Russia
Kalashnikov Izhevsk State Technical University
Petrov
Izhevsk, Russia
Contactless electromagnetic acoustic techniques of diagnostics and assessment of mechanical properties of steel rolled bars
The acoustic technologies of the mechanical properties assessment and diagnostics of steel rolled bars based on using contactless electromagnetic acoustic (EMA) transducers of longitudinal, shear and Rayleigh waves and a mirror-shadow technique on multiple reflections are presented. Dependencies of the structural sensitive acoustic factors (absolute values of longitudinal, shear and Rayleigh wave velocities, their changes during the mechanical loading, acoustoelastic coefficients, efficiency of EMA transformation) on elastic and mechanical properties, the quality of heat treatment, the structural and stress-strain state of steel bar samples from springing, low-alloyed perlite and chrome-nickel steels are investigated.
10.18720/MPM.3812018_7
electromagnetic-acoustic technique; velocities of elastic waves; structure; mechanical properties; stress-strain state; acoustoelasticity; defects
https://mpm.spbstu.ru/article/2018.63.7/
MPM138_07_murav'ev.pdf
RAR
RUS
54-63
Belgorod State University
Ozerov
Belgorod, Russia
Belgorod State University
Klimova
Belgorod, Russia
Belgorod State University
Stepanov
Belgorod, Russia
Belgorod State University
Zherebtsov
Belgorod, Russia
Microstructure evolution of a Ti/TiB metal-matrix composite during high-temperature deformation
A Ti/TiB metal-matrix composite (MMC) was produced by spark plasma sinteringusing a Ti-10wt.%TiB2 powder mixture at 850°C under a load of 40 MPa for 15 min. The microstructure evolution and mechanical behavior of the Ti/TiB composite during uniaxial compression at the temperature range 500 - 1050°С was studied. The evolution of microstructure of the titanium matrix was associated with the formation of dislocation cells at 500°C, continuous dynamic recrystallization at 700°C and discontinuous dynamic recrystallization at temperatures ≥ 850°C. The apparent activation energy of the deformation and processing map were analyzed. The contributions of different strengthening mechanisms of the composite were evaluated.
10.18720/MPM.3812018_8
metal-matrix composite; spark plasma sintering; uniaxial compression; dynamic recrystallization; activation energy; precipitation hardening
https://mpm.spbstu.ru/article/2018.63.8/
MPM138_08_ozerov.pdf
RAR
RUS
64-68
Peter the Great St. Petersburg Polytechnic University
Rudskoy
Andrey
St.Petersburg, Russia
Peter the Great St. Petersburg Polytechnic University
Zolotov
St.Petersburg, Russia
Peter the Great St. Petersburg Polytechnic University
Parshikov
St.Petersburg, Russia
Severe plastic deformation influence on engineering plasticity of Copper
In present paper experimental research results of extra-pure Copper mechanical properties after severe plastic deformation are presented. Equal channel angular pressing was used for processing. Engineering plasticity of ultrafine grain Copper during cold rolling was estimated
10.18720/MPM.3812018_9
equal channel angular pressing; extra-pure Copper; mechanical properties; cold rolling
https://mpm.spbstu.ru/article/2018.63.9/
MPM138_09_rudskoi.pdf
RAR
RUS
69-75
T-5749-2017
6602123579
0000-0002-2102-1076
Peter the Great St. Petersburg Polytechnic University
Kodzhaspirov
Georgij
kodjaspirov@spbstu.ru
St.Petersburg, Russia
Peter the Great St. Petersburg Polytechnic University
Kitaeva
D.A.
St.Petersburg, Russia
Kyrgyz-Russian Slavic University
Pazylov
Bishkek, Kyrgyz Republic
Kyrgyz-Russian Slavic University
Rudaev
Bishkek, Kyrgyzstan
On anisotropy of mechanical properties of aluminum alloys under high temperature deformation
The anisotropy factor assessment under various parameters of thermomechanical loading is estimated by the example of experimental studying deformation and structural parameters of anisotropic Al alloy 1561. It is found that the smallest value of the anisotropy factor corresponds to the formation of equiaxed fine-grained structure formed in the temperature-rate conditions of superplasticity.
10.18720/MPM.3812018_10
anisotropy factor; dynamic superplasticity; aluminum alloys; phase transformations
https://mpm.spbstu.ru/article/2018.63.10/
MPM138_10_kodzhaspirov.pdf
RAR
RUS
76-81
Peter the Great St. Petersburg Polytechnic University
Rudskoy
Andrey
St.Petersburg, Russia
Ural Federal University named after the first President of Russia B.N. Yeltsin
Bogatov
Ekaterinburg, Russia
Ural Federal University named after the first President of Russia B.N. Yeltsin
Nukhov
Ekaterinburg, Russia
Ural Federal University named after the first President of Russia B.N. Yeltsin
Tolkushkin
Ekaterinburg, Russia
On the development of the new technology of severe plastic deformation in metal forming
The information about the effect of the plastic deformation mechanism on the formation of the sub-microcrystalline structure of steels is reported. It is shown that the development of the new technological schemes for metal forming with severe alternating deformation is promising. A rolling method by two passes, which provides severe alternating deformation with minor changes of the billet dimensions is proposed. The results of computer simulation showed that with the use of new rolling method the uniformity of deformation along the height and the value of the deformation degree in the plane of symmetry of the billet are increased.
10.18720/MPM.3812018_11
severe plastic deformation; alternating deformation; forging; rolling; structure
https://mpm.spbstu.ru/article/2018.63.11/
MPM138_11_rudskoi.pdf
RAR
RUS
82-89
Ural Federal University named after the first President of Russia B.N. Yeltsin
Erpalov
Ekaterinburg, Russia
Ural Federal University named after the first President of Russia B.N. Yeltsin
Kungurov
Ekaterinburg, Russia
Examination of hardening curves definition methods in torsion test
Torsion tests allow studying the rheological properties of materials over a wide range of strain and strain rate values as well as temperature. A key moment in construction of hardening curves is the interpretation of experimental data, which are usually the torque - angle of twist curves. However, there are a number of independent methods to obtain interpretation of experimental data. In addition, there is no single approach to determining the degree of equivalent strain in torsion test. The aim of this paper is to review existing hardening curves definition methods in torsion test and to examine them with the use of finite element modelling.
10.18720/MPM.3812018_12
material testing; torsion; rheological properties; strain resistance; equivalent strain
https://mpm.spbstu.ru/article/2018.63.12/
MPM138_12_erpalov.pdf
RAR
RUS
90-110
I.P. Bardin Central Research Institute for Ferrous Metallurgy
Filippova
Moscow, Russia
I.P. Bardin Central Research Institute for Ferrous Metallurgy
Blinova
Moscow, Russia
I.P. Bardin Central Research Institute of Ferrous Metallurgy
Glezer
Moscow, Russia
I.P. Bardin Central Research Institute for Ferrous Metallurgy
Sundeev
Moscow, Russia
I.P. Bardin Central Research Institute for Ferrous Metallurgy
Tomchuk
Moscow, Russia
National University of Science and Technology "MISiS"
Muradimova
Moscow, Russia
Competition between the volume solution and the surface segregation of solved elements in α-Fe
It was experimentally shown, using Auger-spectroscopy method, that there is a certain temperature interval of forming surface segregations of an element (C, N, B, P, Mo, Ti, Al, S, Sn, Cu) solved in α-Fe of low-carbon steels and ferrous-based alloys. Proposed mathematical approach based on traditional relationships of the equilibrium thermodynamics and diffusion kinetics models has determined the temperature scale positions of the intervals of forming segregations of the solved elements in α-Fe.
10.18720/MPM.3812018_13
solid solution; surface; segregation; ferrous alloys; kinetics; computer modeling
https://mpm.spbstu.ru/article/2018.63.13/
MPM138_13_filippova.pdf
RAR
RUS
111-118
National research centre “Kurchatov Institute” - Central Research Institute of Structural Materials “PROMETEY”
Petrov
St.Petersburg, Russia
National research centre “Kurchatov Institute” - Central Research Institute of Structural Materials “PROMETEY”
Prokoshev
St.Petersburg, Russia
National research centre “Kurchatov Institute” - Central Research Institute of Structural Materials “PROMETEY”
Margolin
St.Petersburg, Russia
National research centre “Kurchatov Institute” - Central Research Institute of Structural Materials “PROMETEY”
Shumko
St.Petersburg, Russia
Carbide forming special features and fracture mechanisms under the austenitic chromium-nickel 304 steel post-life ageing
Post-life ageing of austenitic chromium-nickel 304 steel elements of the fast neutrons reactor equipment was carried out at a temperature above the operating conditions. The change in the short-term mechanical properties of the material was investigated. The relationship between the change in impact strength, fracture mechanisms and the morphology of carbide precipitates was revealed.
10.18720/MPM.3812018_14
post-life ageing; austenitic steel; mechanical properties; fracture mechanisms; microstructure; carbides precipitation
https://mpm.spbstu.ru/article/2018.63.14/
MPM138_14_petrov.pdf
RAR
RUS
119-130
0000-0003-0041-9971
Peter the Great St. Petersburg Polytechnic University
Bykov
St.Petersburg, Russia
Kutateladze Institute of Thermophysics SB RAS
Safonov
Novosibirsk, Russia
Peter the Great St. Petersburg Polytechnic University
Leshchev
St.Petersburg, Russia
Kutateladze Institute of Thermophysics SB RAS
Starinskiy
Novosibirsk, Russia
Kutateladze Institute of Thermophysics SB RAS
Bulgakov
Novosibirsk, Russia
Gas-jet method of metal film deposition: direct simulation monte-carlo of He-Ag mixture flow
Nanostructured silver films were produced by the gas-jet deposition method for the temperatures of the Ag vapor source (a crucible) in the range 1200-1400K. The direct simulation Monte Carlo method was applied for modeling the silver–helium mixture flow inside the crucible with subsequent jet expansion into vacuum and detailed information on jetgasdynamics was obtained. The helium carrier gas is shown to play an important role in the deposition process by increasing both the metal atom velocity and flux onto the substrate. An optimal helium flux resulting in the maximal silver deposition rate is found. The onset of cluster formation in the Ag-He jet is determined. It is shown that for the experimental conditions silver clusters are not generated in the jet and thus the observed nanostructures are formed on the substrate surface due to diffusion and nucleation of the deposited atoms.
10.18720/MPM.3812018_15
silver films; gas-jet deposition method; direct simulation Monte Carlo; silver-helium vacuum expansion; cluster formation process
https://mpm.spbstu.ru/article/2018.63.15/
MPM138_15_bykov.pdf