Physical Mesomechanics最新文献

{"title":"Structure and Properties of Ion-Plasma Coatings Based on Transition Metals and Their Nitrides Deposited on the Surface of Beryllium","authors":"N. V. Semenchuk,&nbsp;O. S. Novitskaya","doi":"10.1134/S1029959925600260","DOIUrl":"10.1134/S1029959925600260","url":null,"abstract":"<p>The microstructure, phase composition, and tribological properties of coatings deposited on beryllium bronze to enhance its wear resistance were investigated. Composite and gradient Cu - Ti coatings, as well as single-layer and multilayer TiN and CrN / TiN coatings, were examined. It was found that composite and gradient Cu - Ti coatings exhibit a multiphase structure with either a uniform or gradient titanium distribution across the coating cross-section, depending on the ion-plasma spraying parameters. Multilayer CrN / TiN coatings displayed a well-defined layer periodicity, with individual layer thicknesses of 250 nm (16-layer coating) and 125 nm (32-layer coating). The single-layer TiN coating featured a columnar microstructure and had a total thickness of 4 μm. To enhance the adhesion of TiN and CrN coatings to the substrate, a Cu - Ti interlayer was applied, reducing interfacial stresses and improving bond strength. Scratch tests confirmed good adhesion for all coatings, with the coatings sustaining loads ranging from 10 N (single-layer and 16-layer coatings) up to 30 N (CrN coating with a Cu - Ti interlayer). Tribological tests revealed that most coatings wear via a microabrasive friction mechanism, except for the composite and gradient Cu - Ti coatings, which fail through an adhesive-brittle mechanism. The 32 - layer CrN / TiN coating and the coatings with a Cu - Ti interlayer exhibited the highest wear resistance. The findings demonstrate that multilayer architectures and Cu - Ti interlayers significantly enhance the mechanical and tribological properties of beryllium bronze coatings, making them promising for high-load and high-wear applications.</p>","PeriodicalId":726,"journal":{"name":"Physical Mesomechanics","volume":"29 2","pages":"240 - 250"},"PeriodicalIF":2.0,"publicationDate":"2026-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147807582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microstructure and Mechanical Properties of Mechanically Alloyed Al-Mn-Cu-Zr Alloy","authors":"О. А. Yakovtseva,&nbsp;А. G. Mochugovskiy,&nbsp;E. N. Zanaeva,&nbsp;A. S. Prosviryakov,&nbsp;N. B. Emelina,&nbsp;A. V. Mikhaylovskaya","doi":"10.1134/S1029959924601969","DOIUrl":"10.1134/S1029959924601969","url":null,"abstract":"<p>Development of materials and processing regimes for the enhancement of specific strength is a challenge for the aviation, aerospace and transportation industries. The paper analyzes the evolution of microstructural parameters and mechanical properties of the Al – 5 %Zr – 4 %Mn – 2 %Cu alloy obtained by mechanical alloying with subsequent hot pressing at temperatures between 350 and 450°C. High-energy ball milling for 10 h formed nanostructured granules of aluminum-based solid solution with the grain size of 20–30 nm and microhardness of ~460 HV. After hot pressing and further annealing, grains increased up to ~90 nm, the Al₃Zr, Al₆Mn and Al₂₀Cu₂Mn₃ phases precipitated and the formation of zones free from secretions along the boundaries of the granules. The microhardness of granules after annealing to the compaction temperature decreased to ~300–340 HV, and the hardness of hot-pressed specimens did not exceed 280 HV, which was attributed to residual porosity. The lowest porosity (0.5 %) was found in specimens consolidated at 450°C, the compressive yield stress of which reached ~700 MPa at room temperature and ~170 MPa at 350°C.</p>","PeriodicalId":726,"journal":{"name":"Physical Mesomechanics","volume":"29 2","pages":"211 - 223"},"PeriodicalIF":2.0,"publicationDate":"2026-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147807618","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of Rotary Forging on the Structure, Texture, and Properties of Rods Made of a Biocompatible β-alloy Ti-39Nb-7Zr","authors":"G. Zh. Mukanov,&nbsp;V. P. Kuznetsov,&nbsp;A. G. Illarionov,&nbsp;M. A. Zorina,&nbsp;A. V. Korelin,&nbsp;S. I. Stepanov","doi":"10.1134/S1029959924602173","DOIUrl":"10.1134/S1029959924602173","url":null,"abstract":"<p>In this study, we examined the structure, texture, and mechanical properties of β-alloy Ti-39Nb-7Zr rods following intensive plastic deformation through rotary forging (RF). Finite element method (FEM) simulations revealed an uneven stress distribution within the rods, characterized by predominantly tensile stresses in the core and compressive stresses at the surface. Statistical analysis of orientation microscopy data indicated a microstructural gradient: both the thickness of deformed grains and the size of recrystallized grains decreased from the core to the surface, while the proportion of recrystallized grains increased. The RF process induced a gradient texture, with distinct grain orientations in the central and near-surface areas. An increase in hardness in the near-surface layers was attributed to grain refinement. Taylor factor calculations showed a minor effect of texture on the mechanical properties. The elastic modulus across the rod section remained consistent at 75 ± 1 GPa, suggesting that surface hardening was achieved without altering elastic properties.</p>","PeriodicalId":726,"journal":{"name":"Physical Mesomechanics","volume":"29 2","pages":"274 - 286"},"PeriodicalIF":2.0,"publicationDate":"2026-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147807635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Phase Transformations in Two–Phase Fe95Ni05 Alloys with Gradient–Grained Structure under Shock Loading","authors":"A. V. Korchuganov,&nbsp;D. S. Kryzhevich,&nbsp;A. S. Grigoriev,&nbsp;O. A. Berezikov,&nbsp;K. P. Zolnikov","doi":"10.1134/S1029959924602227","DOIUrl":"10.1134/S1029959924602227","url":null,"abstract":"<p>A molecular dynamics study of structural and phase changes in bcc single crystals and Fe₉₅Ni₀₅ samples with a two–phase gradient–grained structure under shock loading was performed. Grains of the simulated samples with the fcc lattice contained lamellas with a bcc structure and had a pronounced texture. It was shown that the shock wave profile splits into three fronts, which form three zones with characteristic structural rearrangements: elastic, plastic, and plastic/phase. Differences in the velocities of the three fronts lead to a change in the sizes of the formed zones during shock wave propagation. Thus, the size of the plastic change zone increases due to the lag of the plastic/phase rearrangement front. An increase in the grain size gradient of the sample due to smaller grains leads to a significant decrease in the size of the plastic zone. This behavior is due to the suppression of dislocation nucleation in small grains. It is shown that the orientation of the bcc lattice relative to the direction of the shock loading significantly affects the intensity of phase transformations. When the shock wave propagates along the [110] crystallographic direction, the most active phase transitions occur than for the [111] and [112] orientations. Release waves also initiate phase transformations behind the front of their propagation.</p>","PeriodicalId":726,"journal":{"name":"Physical Mesomechanics","volume":"29 2","pages":"182 - 196"},"PeriodicalIF":2.0,"publicationDate":"2026-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147807587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Effect of Casting-Defined Phase Composition on the Structural Transformation and Electro-Mechanical Properties in Al-Fe Alloy after Severe Plastic Deformation","authors":"A. E. Medvedev,&nbsp;O. O. Zhukova,&nbsp;N. A. Enikeev,&nbsp;V. U. Kazykhanov,&nbsp;R. L. Narayan,&nbsp;M. Yu. Murashkin","doi":"10.1134/S1029959925600259","DOIUrl":"10.1134/S1029959925600259","url":null,"abstract":"<p>This paper studies the effect of the phase composition of cast Al-Fe alloy on its microstructure, properties and thermal stability after severe plastic deformation by high-pressure torsion (HPT). The aluminum alloy containing 1.7 wt. % Fe was produced by conventional casting (CC) and casting into electromagnetic mold (EMC), providing different phase composition, morphology and distribution in the initial state due to the different crystallization rate. In the CC alloy, the iron formed Al₁₃Fe₄ and Al₆Fe phases or particles, while in the EMC alloy, intermetallic particles have primarily Al₂Fe-alike composition. Such differences in size, distribution and composition of particles prior to HPT resulted in different levels of electro-mechanical properties in the deformed state. Both CC and EMC alloys demonstrate an increase in ultimate tensile strength (σ_UTS) and a decrease in electrical conductivity (EC) after HPT. The effects are more pronounced in the CC alloy, most likely due to the coarser particles. Annealing the samples after HPT at 230°C for 1h leads to a twofold decrease of the σ_UTS in the CC alloy and is accompanied by an increase in EC. At the same time, such heat treatment seemingly increased EC, decreased elongation to failure and had seemingly no effect on the σ_UTS of the EMC alloy. Overall, EMC alloy demonstrates higher thermal stability, most likely due to the presence and dispersion of the Al₂Fe intermetallic phase, which forms primarily due to the high cooling rate of the alloy, which is inherent in the EMC method.</p>","PeriodicalId":726,"journal":{"name":"Physical Mesomechanics","volume":"29 2","pages":"287 - 305"},"PeriodicalIF":2.0,"publicationDate":"2026-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147807632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Influence of the Structural-Phase State on Physical and Mechanical Characteristics of Fe-Mn Alloy","authors":"O. V. Rybalchenko,&nbsp;N. S. Martynenko,&nbsp;G. V. Rybalchenko,&nbsp;E. A. Lukyanova,&nbsp;P. D. Dolzhenko,&nbsp;I. V. Shchetinin,&nbsp;S. V. Konushkin,&nbsp;P. A. Prokofev,&nbsp;K. S. Kravchuk,&nbsp;A. G. Raab,&nbsp;A. N. Belyakov,&nbsp;S. V. Dobatkin","doi":"10.1134/S1029959925600065","DOIUrl":"10.1134/S1029959925600065","url":null,"abstract":"<p>The paper presents a study of various structural-phase states of the Fe-Mn-5Si alloy after severe plastic deformation by equal channel angular pressing and high-pressure torsion. Various physical and mechanical characteristics of the alloy were experimentally measured and analyzed in the austenitic coarse-grained, nanostructured grain-subgrain and twinned states, as well as in the predominantly martensitic and two-phase ultrafine-grained states. Indentation methods were used to find that severe plastic deformation increases the modulus of elasticity, the work of elastic deformation, and its elastic component, reducing the contact rigidity of the indenter with the deformed material and the work of plastic deformation. In this case, the alloy in the two-phase state after deformation has the lowest modulus of elasticity and work of plastic deformation at the highest work of elastic deformation.</p>","PeriodicalId":726,"journal":{"name":"Physical Mesomechanics","volume":"29 2","pages":"197 - 210"},"PeriodicalIF":2.0,"publicationDate":"2026-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147807579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Calculating the Effective Mechanical Properties of Polymer Composites with Dispersed Particles Based on the Particle Size Distribution","authors":"M. Danilaev,&nbsp;S. Karandashov,&nbsp;V. Kuklin,&nbsp;I. Sidorov,&nbsp;A. Enskaya","doi":"10.1134/S1029959924602215","DOIUrl":"10.1134/S1029959924602215","url":null,"abstract":"<p>Development of adequate mathematic models of the mechanical properties of polymer composites with dispersed particles (PCDP) requires their verification. The following reasons complicate the verification of these mathematical models: lack of information on the mechanical properties of the transition layer at the boundary between the modified particle and the polymer; lack of information on the mechanical properties of the agglomerates that inevitably appear during the preparation of the PCDP. This study suggests a mathematical model for calculating effective mechanical properties (bulk modulus, shear modulus, Young’s modulus, and Poisson’s ratio) of the PCDP with encapsulated particles and verification of this model using PCDP samples with inclusions—nearly spherical dispersed aluminum oxide (Al₂O₃) particles that are not encapsulated and the particles encapsulated in a thin polymer shell. Equations for calculating the effective mechanical characteristics of these PCDPs are obtained. As demonstrated, the proposed model reliably provides the values of the bulk modulus, shear modulus, Young’s modulus and Poisson’s ratio of PCDPs with a small relative volume of dispersed submicron particles in the matrix.</p>","PeriodicalId":726,"journal":{"name":"Physical Mesomechanics","volume":"29 2","pages":"224 - 239"},"PeriodicalIF":2.0,"publicationDate":"2026-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147807631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of a Reliable Numerical Model for a Process of Band Extrusion for Ceramic Roofing Tiles to Improve Durability of Forming Tools","authors":"M. Hawryluk,&nbsp;J. Marzec,&nbsp;L. Madej,&nbsp;K. Perzynski","doi":"10.1134/S1029959925600028","DOIUrl":"10.1134/S1029959925600028","url":null,"abstract":"<p>The specifics of the ceramic industry processes result in high pressures acting on the set of forming tools, leading to intense wear, which directly affects production costs and increases environmental impact. Therefore, the analysis of improving the efficiency of the technological stage of clay band extrusion in the production process of ceramic roofing tiles, using a combination of laboratory, industrial, and numerical studies, is the subject of this work. Extensive laboratory and industrial studies on the operational durability of clay band forming tools demonstrated that the dominant mechanism of destruction is tribological wear, particularly intense abrasive wear. The work also emphasizes the need to enhance the interpretation of research results through the use of computer-aided design techniques for technology development. As part of the research, a comprehensive numerical model was developed, incorporating the definition of a constitutive model based on the Drucker-Prager equation, a rheological model of the studied material, and initial and boundary conditions reflecting the specifics of the extrusion process. A key aspect was developing the rheological model in a tabular form and based on the Hansel-Spittel equation. The friction conditions based on specially designed laboratory tests were also determined. The identification of the flow stress model parameters was carried out using inverse analysis techniques. The reliability of the proposed material model, as well as the model for the entire technological stage, was verified by comparing the calculation results with measurement results. The obtained numerical simulation results preliminarily indicate the correctness of the conducted research, as both the shape of the extruded band and the preliminary results of stress distributions in the formed mass and on the tools are acceptably consistent with experimental observations. Such a numerical model for simulating band extrusion in the production process of ceramic roofing tiles will enable a comprehensive and more in-depth analysis of tool wear, especially over a longer operational period. However, further verification of the modeling results is necessary, followed by additional research aimed at fine-tuning the numerical model to fully reflect the specifics of the studied process. It should be emphasized that the developed numerical model represents one of the first approaches to addressing this type of issue concerning the process of clay band extrusion through forming tools.</p>","PeriodicalId":726,"journal":{"name":"Physical Mesomechanics","volume":"29 2","pages":"251 - 273"},"PeriodicalIF":2.0,"publicationDate":"2026-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147807634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Retraction Note: Investigation of Thermal Impacts and Different Gradient Elasticity Theories on Wave Propagation through the Polymer Matrix Incorporated Carbon Nanotube Walls","authors":"K. Antar,&nbsp;Kh. Amara,&nbsp;A. Besseghier","doi":"10.1134/S1029959926020128","DOIUrl":"10.1134/S1029959926020128","url":null,"abstract":"","PeriodicalId":726,"journal":{"name":"Physical Mesomechanics","volume":"29 2","pages":"339 - 339"},"PeriodicalIF":2.0,"publicationDate":"2026-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147807617","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Interaction Features of Components during the Sintering of Powder Mixtures Ti-Al-(Fe-Fe2O3)","authors":"A. G. Knyazeva,&nbsp;E. N. Korosteleva,&nbsp;V. V. Korzhova","doi":"10.1134/S1029959924602136","DOIUrl":"10.1134/S1029959924602136","url":null,"abstract":"<p>The phase composition and microstructure of sintered powder materials based on multicomponent mixtures of Ti + Al + (Fe + Fe₂O₃), where one of the components is an oxidized steel swarf powder, has been studied. Two variants of the ratio of titanium and aluminum with the same volume content of swarf powder are considered. It was found that the presence of iron oxide in the initial swarf powder does not guarantee the formation of separate aluminum oxide phases. During vacuum sintering, both in the first version of the composition and in the second one, iron aluminides are mainly formed. The formation of ternary intermetallides TiFe₂Al and complex oxides FeTiO₃ was also observed.</p>","PeriodicalId":726,"journal":{"name":"Physical Mesomechanics","volume":"29 2","pages":"321 - 338"},"PeriodicalIF":2.0,"publicationDate":"2026-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147807633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}