Physical Mesomechanics最新文献_第10页

Effect of Asymmetric Rolling on the Structure and Properties of Cu-Cr-Zr Alloys 不对称轧制对Cu-Cr-Zr合金组织和性能的影响

IF 1.8 4区材料科学

Physical Mesomechanics Pub Date : 2024-12-08 DOI: 10.1134/S1029959924060067

D. A. Aksenov, G. I. Raab, A. G. Raab, A. M. Pesin, H. Yu

{"title":"Effect of Asymmetric Rolling on the Structure and Properties of Cu-Cr-Zr Alloys","authors":"D. A. Aksenov, G. I. Raab, A. G. Raab, A. M. Pesin, H. Yu","doi":"10.1134/S1029959924060067","DOIUrl":"10.1134/S1029959924060067","url":null,"abstract":"Asymmetric rolling is a high-tech method based on the principles of severe plastic deformation. In the present paper, it is shown that Cu-0.8Cr-0.1Zr alloy is highly strengthened during asymmetric rolling due to structure refinement to an ultrafine-grained state. For example, in only one pass, at the accumulated strain 0.94 ± 0.20, the strength increases from 265 to 425 MPa. During the deformation process, the structure becomes refined, with the average size of fragments reaching 235 ± 90 nm. Structure heterogeneity is also observed in the cross section of a sample, which is associated with different rotation speeds of the rolls. The shape of grains in the central zone of samples corresponds to the state after conventional symmetric rolling. However, in the zone adjacent to the roll rotating at a higher speed, mechanical texture of grains is similar to that after shear. Subsequent aging of Cu-0.8Cr-0.1Zr alloy at 450°C makes it possible to achieve the ultimate strength 560 MPa and electrical conductivity 82% IACS, which exceeds the characteristics of the strengthened steel by 10–15%. The analysis of contributions to strengthening during asymmetric rolling reveals that the main contribution comes from the refinement of the grain structure to an ultrafine-grained state, which amounts to 58%. The fractions of the dislocation and dispersion contributions comprise 15 and 20%, respectively. Compared to conventional rolling, as well as other deformation methods that provide the same level of accumulated strain and strengthening in one cycle, such as equal channel angular pressing-conform, asymmetric rolling is the most promising due to its simpler process scheme.","PeriodicalId":726,"journal":{"name":"Physical Mesomechanics","volume":"27 and Elena V. Bobruk","pages":"687 - 697"},"PeriodicalIF":1.8,"publicationDate":"2024-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142790393","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}

引用次数: 0

Functional and Mechanical Characteristics of Ultrafine-Grained Fe-Mn-Si Alloys for Biomedical Applications 生物医学用超细晶铁锰硅合金的功能和力学特性

IF 1.8 4区材料科学

Physical Mesomechanics Pub Date : 2024-12-08 DOI: 10.1134/S1029959924060080

O. V. Rybalchenko, N. S. Martynenko, G. V. Rybalchenko, E. A. Lukyanova, V. S. Komarov, M. A. Kaplan, A. N. Belyakov, P. D. Dolzhenko, I. V. Shchetinin, A. G. Raab, S. V. Dobatkin, S. D. Prokoshkin

引用次数: 0

Evolution of the Microstructure and Mechanical Properties of Al-B Composite with the Ultrafine-Grained Aluminum Matrix 超细晶铝基Al-B复合材料组织与力学性能的演变

IF 1.8 4区材料科学

Physical Mesomechanics Pub Date : 2024-12-08 DOI: 10.1134/S102995992406002X

E. V. Bobruk, I. A. Ramazanov, V. V. Astanin

{"title":"Evolution of the Microstructure and Mechanical Properties of Al-B Composite with the Ultrafine-Grained Aluminum Matrix","authors":"E. V. Bobruk, I. A. Ramazanov, V. V. Astanin","doi":"10.1134/S102995992406002X","DOIUrl":"10.1134/S102995992406002X","url":null,"abstract":"The paper examines the microstructural evolution of alloy 1565ch of the Al-Mg-Mn-Zn-Zr system during thermomechanical treatment, including severe plastic deformation by high-pressure torsion or equal channel angular pressing according to the Conform scheme and subsequent isothermal rolling at 200°C. Formation of the nanostructured and ultrafine-grained states in alloy 1565ch with the controlled distribution of the Al3Mg2, Al6Mn and Al3Zr phases both inside grains and at their boundaries allows for the effect of superplasticity at the temperatures 250 and 300°C and strain rates 5 × 10–2, 10–2, and 5 × 10–3 s–1. Microstructural analysis by transmission electron microscopy shows that superplastic deformation at the temperatures 250 and 300°C allows a homogeneous ultrafine-grained state to be preserved. The studied ultrafine-grained aluminum alloy 1565ch has a high strength and the ability to relieve stresses, and therefore it can be favorably used as the matrix material in composites reinforced with continuous boron fibers. In the paper, we use this alloy to study special features of production of a multilayer (foil–fiber–foil) metal matrix composite by isothermal pressing under low-temperature superplastic conditions. This method has a positive effect on the mechanical properties of the composite, such as ultimate strength at 200°C, impact strength at room temperature, and fracture toughness at room temperature.","PeriodicalId":726,"journal":{"name":"Physical Mesomechanics","volume":"27 and Elena V. Bobruk","pages":"642 - 652"},"PeriodicalIF":1.8,"publicationDate":"2024-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142790355","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}

引用次数: 0

Electrospark Deposition of Ti-Ta Coatings on Ti6Al4V Titanium Alloy: Oxidation Resistance and Wear Properties 电火花沉积 Ti6Al4V 钛合金上的 Ti-Ta 涂层：抗氧化性和磨损性能

IF 1.8 4区材料科学

Physical Mesomechanics Pub Date : 2024-10-24 DOI: 10.1134/S1029959924050096

A. A. Burkov, S. V. Nikolenko, V. O. Krutikova, N. A. Shelmenok

{"title":"Electrospark Deposition of Ti-Ta Coatings on Ti6Al4V Titanium Alloy: Oxidation Resistance and Wear Properties","authors":"A. A. Burkov, S. V. Nikolenko, V. O. Krutikova, N. A. Shelmenok","doi":"10.1134/S1029959924050096","DOIUrl":"10.1134/S1029959924050096","url":null,"abstract":"Ti-Ta coatings were deposited on titanium alloy by electrospark deposition in the anode mixture of titanium granules and tantalum powder in an argon atmosphere. The cathode weight gain kinetics, tantalum concentration, structure, oxidation resistance, microhardness, and tribotechnical properties of the coatings were studied. It was shown that, with increasing tantalum concentration in the anode mixture, the net cathode gain during 10 min of treatment increased monotonically. The average thickness of the deposited coatings varied in the range from 30.9 to 39.1 µm. The concentration of tantalum in the coating composition increased with increasing tantalum powder concentration in the anode mixture. The coating structure was dense without longitudinal and transverse cracks. With an excess of tantalum powder in the anode mixture, the discharge energy was not enough to completely melt it. The phase composition included α-Ti and a bcc tantalum solid solution in β-Ti. With increasing powder concentration in the anode mixture, the intensity of the bcc-phase peaks increased relative to the α-Ti peaks. The surface hydrophobicity of Ti-Ta coatings was higher than that of uncoated Ti6Al4V titanium alloy. The developed method can be used to produce Ti-Ta coatings with up to 5.9 times higher oxidation resistance compared to Ti6Al4V alloy. The high oxidation resistance of Ti-Ta coatings is explained by the formation of a dense and durable TiO2 layer. The surface microhardness of Ti-Ta coatings ranged from 4.72 to 4.91 GPa. The friction coefficient was in the range of 0.87–0.97. The wear resistance was 23 to 36 times higher as compared to the titanium alloy.","PeriodicalId":726,"journal":{"name":"Physical Mesomechanics","volume":"27 5","pages":"618 - 626"},"PeriodicalIF":1.8,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142519094","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}

引用次数: 0

Absorption of Impact and Shear Energy by Crystal Lattices of Mechanically Activated Inorganic Substances: A Review 机械活化无机物晶格对冲击能和剪切能的吸收：综述

IF 1.8 4区材料科学

Physical Mesomechanics Pub Date : 2024-10-24 DOI: 10.1134/S1029959924050084

I. A. Massalimov, B. I. Massalimov, A. U. Shayakhmetov, M. R. Samsonov, F. Kh. Urakaev

引用次数: 0

Digital Image Correlation Analysis of Fatigue Degradation of Layered Polymer Composites (Polyetheretherketone/Polyetherimide, PEEK/PEI) with Carbon-Fiber Fabric Prepreg 带有碳纤维织物预浸料的层状聚合物复合材料（聚醚醚酮/聚醚酰亚胺，PEEK/PEI）疲劳降解的数字图像相关性分析

IF 1.8 4区材料科学

Physical Mesomechanics Pub Date : 2024-10-24 DOI: 10.1134/S1029959924050047

S. V. Panin, A. A. Bogdanov, V. O. Aleksenko, S. A. Bochkareva, P. S. Lyubutin, I. L. Panov, D. Tian

{"title":"Digital Image Correlation Analysis of Fatigue Degradation of Layered Polymer Composites (Polyetheretherketone/Polyetherimide, PEEK/PEI) with Carbon-Fiber Fabric Prepreg","authors":"S. V. Panin, A. A. Bogdanov, V. O. Aleksenko, S. A. Bochkareva, P. S. Lyubutin, I. L. Panov, D. Tian","doi":"10.1134/S1029959924050047","DOIUrl":"10.1134/S1029959924050047","url":null,"abstract":"In this work, the relationship was considered between the structure and cyclic loading resistance of a layered composite consisting of PEI (PEEK) plate/PEI (PEEK) film/PEI-impregnated carbon-fiber fabric prepreg/PEI (PEEK) film/PEI (PEEK) plate by analyzing the time variation in the parameters of mechanical hysteresis loops calculated using digital image correlation. It was shown that the polyetherimide-based layered composite has low fatigue life under cyclic loading (0.8 of the yield strength), resulting from incompatible deformation between the PEI plates and the prepreg due to a layer interface formed by low-melting TecaPEI film. In the PEEK layered composite, the layer interface was formed by neat PEEK energy director and therefore had a little amount of defects, due to which the load was well transferred from the PEEK plates to the middle reinforcement layer. As a result, the fatigue life at a load level of 0.8 of the yield strength corresponded to high-cycle fatigue (more than 86000 cycles).","PeriodicalId":726,"journal":{"name":"Physical Mesomechanics","volume":"27 5","pages":"541 - 555"},"PeriodicalIF":1.8,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S1029959924050047.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142519095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Surface Structure Formation in Plasma Cutting of Aluminum and Titanium Alloys Using Direct Current Straight and Reverse Polarity 使用直流直向和反向极性等离子切割铝和钛合金时的表面结构形成

IF 1.8 4区材料科学

Physical Mesomechanics Pub Date : 2024-10-24 DOI: 10.1134/S1029959924050023

E. A. Sidorov, A. V. Grinenko, A. V. Chumaevskii, V. E. Rubtsov, A. V. Nikolaeva, A. O. Panfilov, E. O. Knyazhev, A. M. Cheremnov, V. R. Utyaganova, K. S. Osipovich, D. A. Gurianov, E. A. Kolubaev

{"title":"Surface Structure Formation in Plasma Cutting of Aluminum and Titanium Alloys Using Direct Current Straight and Reverse Polarity","authors":"E. A. Sidorov, A. V. Grinenko, A. V. Chumaevskii, V. E. Rubtsov, A. V. Nikolaeva, A. O. Panfilov, E. O. Knyazhev, A. M. Cheremnov, V. R. Utyaganova, K. S. Osipovich, D. A. Gurianov, E. A. Kolubaev","doi":"10.1134/S1029959924050023","DOIUrl":"10.1134/S1029959924050023","url":null,"abstract":"The structural features and phase composition are examined in near-surface layers of specimens of Al-Mg, Al-Cu-Mg alloys and commercially pure titanium obtained by plasma cutting using direct current straight polarity (DCSP) and direct current reverse polarity (DCRP). It is found that the flows of molten metal ejected by the gas stream from the cut cavity during cutting form the fusion and heat-affected zones, whose structural morphology, phase composition, and thickness depend on both the selected material and the cutting mode. The fusion zone is thicker in specimens cut using DCRP than in those cut with DCSP. The thickness of the adjacent heat-affected zone is also the largest in the mode that provides a thicker fused layer. Aluminum alloy specimens cut in ambient air are characterized by the presence of oxygen in the near-surface layers. The lowest degree of oxidation is observed in Al-Mg alloy. Oxygen penetrates into the fused layer to a depth of 350–500 μm in Al-Cu-Mg and up to 200–250 μm in Al-Mg alloy. In titanium alloy, the thickness of oxide layers does not exceed 100–150 μm during straight polarity cutting and 200–250 μm during reverse polarity cutting. A thin brittle layer of TiO and TiO2 oxides is formed on the titanium alloy surface. It is shown that the generation of “water mist” around the plasma jet when cutting materials of all types with DCRP leads to a more intensive oxidation of metal, less thermal effect on the material, and reduced roughness of the cut face.","PeriodicalId":726,"journal":{"name":"Physical Mesomechanics","volume":"27 5","pages":"518 - 528"},"PeriodicalIF":1.8,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S1029959924050023.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142519096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microstructural Deformation and Fracture of Reduced Activation Ferritic-Martensitic Steel EK-181 under Different Heat Treatment Conditions 不同热处理条件下还原活化铁素体-马氏体钢 EK-181 的微结构变形和断裂

IF 1.8 4区材料科学

Physical Mesomechanics Pub Date : 2024-10-24 DOI: 10.1134/S1029959924050035

N. A. Polekhina, I. Yu. Litovchenko, S. A. Akkuzin, K. V. Spiridonova, V. V. Osipova, V. M. Chernov, M. V. Leontyeva-Smirnova

{"title":"Microstructural Deformation and Fracture of Reduced Activation Ferritic-Martensitic Steel EK-181 under Different Heat Treatment Conditions","authors":"N. A. Polekhina, I. Yu. Litovchenko, S. A. Akkuzin, K. V. Spiridonova, V. V. Osipova, V. M. Chernov, M. V. Leontyeva-Smirnova","doi":"10.1134/S1029959924050035","DOIUrl":"10.1134/S1029959924050035","url":null,"abstract":"TEM studies were performed to examine the effect of holding of dispersion-strengthened heat-resistant reduced activation 12% chromium ferritic-martensitic steel EK-181 in static liquid lead for 3000 h at 600°C on the steel microstructure in comparison with the steel after conventional heat treatment by quenching and tempering at 720°C. It was found that the steel microstructure has good thermal stability under the specified experimental conditions. Microstructural deformation of EK-181 steel was studied in the neck region of tensile specimens tested at the temperatures 20, 680, 700, and 720°C with and without holding in liquid lead, and their fracture mechanisms were investigated. As a result of plastic deformation during tensile testing at room temperature, martensite plates and laths near the fracture surface are distorted and fragmented with the formation of new low-angle boundaries, and the dislocation density increases. At the deformation temperatures 680–720°C, nearly equiaxed ferrite grains are formed, the density and size of second-phase particles (M23C6 and MX) increases due to dynamic strain aging, and the dislocation density decreases locally. As the test temperature rises, the degree of martensite tempering increases. At T ≥ 700°C, some dynamic polygonization and dynamic recrystallization are observed. At elevated tension temperatures, ferrite coarsening is more significant in the specimens held in lead as compared to the conventionally treated material. The plastic deformation and fracture behavior of the steel are largely determined by the test temperature, rather than by the treatment mode.","PeriodicalId":726,"journal":{"name":"Physical Mesomechanics","volume":"27 5","pages":"529 - 540"},"PeriodicalIF":1.8,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S1029959924050035.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142518798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis of Porous Composites Based on Electroexplosive Ti/Al Nanopowder for Bone Implants 基于用于骨植入物的电爆钛/铝纳米粉体的多孔复合材料的合成

IF 1.8 4区材料科学

Physical Mesomechanics Pub Date : 2024-10-24 DOI: 10.1134/S1029959924050059

O. V. Bakina, N. V. Svarovskaya, V. R. Chzhou, E. A. Glazkova, A. S. Lozhkomoev, L. Yu. Ivanova, L. V. Spirina, M. I. Lerner

{"title":"Synthesis of Porous Composites Based on Electroexplosive Ti/Al Nanopowder for Bone Implants","authors":"O. V. Bakina, N. V. Svarovskaya, V. R. Chzhou, E. A. Glazkova, A. S. Lozhkomoev, L. Yu. Ivanova, L. V. Spirina, M. I. Lerner","doi":"10.1134/S1029959924050059","DOIUrl":"10.1134/S1029959924050059","url":null,"abstract":"Bone tissue engineers are paying close attention to titanium and titanium oxide for use in orthopedic implants due to their good mechanical properties, corrosion resistance, and low toxicity. A drawback of these materials is that there is an insufficient fit between the elastic moduli of titanium compounds and cortical bone, which leads to early bone degradation and implant failure as a result of improper load distribution. Here we report for the first time on TiO2/Al2O3 composites with 20–50% porosity synthesized using bicomponent Ti/Al nanoparticles with an average size of 98 nm. The developed double sintering procedure allows the formation of transport pores through which the porogen and binder can be uniformly removed, and the use of Ti/Al nanoparticles allows the production of specimens with an optimal elastic modulus for cortical bone replacement (2.33 GPa) and low toxicity in in vitro experiments (more than 90% 3T3 cell viability, no more than 3.85% cell apoptosis). The concentration of ions released into the SBF solution depends on the specific surface area of the specimens, but in all cases it is significantly lower than the maximum permissible values. The obtained specimens have great potential for use as biomaterials for the manufacture of scaffolds and screws.","PeriodicalId":726,"journal":{"name":"Physical Mesomechanics","volume":"27 5","pages":"556 - 565"},"PeriodicalIF":1.8,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142518799","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}

引用次数: 0

Evaluation of the Effective Mechanical Properties of a Particle-Reinforced Polymer Composite with Low-Modulus Inclusions 评估带有低模量夹杂物的颗粒增强聚合物复合材料的有效力学性能

IF 1.8 4区材料科学

Physical Mesomechanics Pub Date : 2024-10-24 DOI: 10.1134/S1029959924050072

M. P. Danilaev, S. A. Karandashov, V. A. Kuklin, I. N. Sidorov, A. I. Enskaya

{"title":"Evaluation of the Effective Mechanical Properties of a Particle-Reinforced Polymer Composite with Low-Modulus Inclusions","authors":"M. P. Danilaev, S. A. Karandashov, V. A. Kuklin, I. N. Sidorov, A. I. Enskaya","doi":"10.1134/S1029959924050072","DOIUrl":"10.1134/S1029959924050072","url":null,"abstract":"Adequate mathematical models of the mechanical properties of particle-reinforced polymer composites (PRPCs) require verification, which is difficult to do for at least the following reasons: lack of information on the mechanical characteristics of the transition layer formed at the modified particle–polymer interface, and lack of information about the mechanical characteristics of agglomerates that inevitably form during PRPC fabrication. This paper proposes a mathematical model for calculating the effective mechanical properties (bulk modulus, shear modulus, Young’s modulus, and Poisson’s ratio) of PRPCs with encapsulated filler particles. The model is verified on PRPC specimens with inclusions in the form of air bubbles. Simplified equations are derived for calculating the effective mechanical properties of PRPCs with low-modulus inclusions in the form of air bubbles. It is shown that the proposed model provides reliable estimates of the bulk modulus, shear modulus, Young’s modulus, and Poisson’s ratio of PRPCs at a small relative volume of submicron-sized filler particles in the matrix.","PeriodicalId":726,"journal":{"name":"Physical Mesomechanics","volume":"27 5","pages":"578 - 591"},"PeriodicalIF":1.8,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142518697","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}

引用次数: 0