Physics of Metals and Metallography最新文献_第8页

A Study of the Effect of Magnetic Scattering on the Analysis of the Nanostructure of Oxide Dispersion-Strengthened Steels by Small-Angle Neutron Scattering 磁散射对利用小角中子散射分析氧化物分散强化钢纳米结构的影响研究

IF 1.2 4区材料科学

Physics of Metals and Metallography Pub Date : 2024-04-21 DOI: 10.1134/s0031918x23602718

S. V. Rogozhkin, A. V. Klauz, Yu. E. Gorshkova, G. D. Bokuchava, A. A. Khomich, A. A. Bogachev, A. A. Nikitin, L. Almásy, G. P. Kopitsa

{"title":"A Study of the Effect of Magnetic Scattering on the Analysis of the Nanostructure of Oxide Dispersion-Strengthened Steels by Small-Angle Neutron Scattering","authors":"S. V. Rogozhkin, A. V. Klauz, Yu. E. Gorshkova, G. D. Bokuchava, A. A. Khomich, A. A. Bogachev, A. A. Nikitin, L. Almásy, G. P. Kopitsa","doi":"10.1134/s0031918x23602718","DOIUrl":"https://doi.org/10.1134/s0031918x23602718","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3>A distinctive feature of oxide dispersion-strengthened alloys and steels, which provides a significant increase in heat resistance in comparison with traditional materials, is a significant number of homogeneously distributed nanoscale inclusions (oxides and clusters). For detailed characterization of such materials, a set of techniques is used, such as transmission electron microscopy, atom probe tomography, as well as small-angle scattering of X-rays and neutrons. The latter techniques make it possible to analyze the largest volume of material, while maintaining the ability to detect various nanoscale features. Since ferritic-martensitic oxide dispersion-strengthened steels are ferromagnetic materials, magnetic scattering has to be taken into account in the processing of small-angle neutron scattering data. The nanostructure of ferritic-martensitic oxide dispersion-strengthened steels with different alloying systems (different content of Cr, V, W, Al, and Zr) is investigated by small-angle neutron scattering. A comparison of the results of the study of the nanostructure of steels (oxide particles and clusters) in the ferromagnetic state with and without magnetic scattering is carried out. It is shown that oxide particles have a significantly higher magnetic contrast in comparison with nanoscale clusters. At the same time, the most accurate hardness values can be obtained by taking into consideration of both oxide inclusions and clusters.","PeriodicalId":20180,"journal":{"name":"Physics of Metals and Metallography","volume":"38 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140630363","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}

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Relation between Magnetism and Electronic Structure of 3d-Metal Alloys in the Stoner Theory and in the DSFT 斯通纳理论和 DSFT 中 3d 金属合金的磁性与电子结构之间的关系

IF 1.2 4区材料科学

Physics of Metals and Metallography Pub Date : 2024-04-21 DOI: 10.1134/s0031918x23602275

N. B. Melnikov, A. S. Gulenko, B. I. Reser

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Short-Range Order and Its Stability in a Soft-Magnetic Iron–Gallium Alloy 软磁铁镓合金中的短程有序性及其稳定性

IF 1.2 4区材料科学

Physics of Metals and Metallography Pub Date : 2024-04-21 DOI: 10.1134/s0031918x23602536

Yu. P. Chernenkov, O. P. Smirnov, V. A. Lukshina, A. V. Timofeeva, M. V. Petrik, A. R. Kuznetsov, N. V. Ershov, Yu. N. Gornostyrev, D. A. Shishkin

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A New Stationary Mode of Coupled Oscillations in a Three-Layer Spin-Transfer Nano-Oscillator at High Currents 三层自旋传输纳米振荡器在高电流下的新型静态耦合振荡模式

IF 1.2 4区材料科学

Physics of Metals and Metallography Pub Date : 2024-04-21 DOI: 10.1134/s0031918x23602317

G. I. Antonov, E. G. Ekomasov, K. A. Zvezdin, N. G. Pugach

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Mechanical and Magnetic Properties of Chromium–Nickel Maraging Stainless Steel 04Kh13N8MTYu–VI 铬镍马氏体时效不锈钢 04Kh13N8MTYu-VI 的机械和磁性能

IF 1.2 4区材料科学

Physics of Metals and Metallography Pub Date : 2024-04-21 DOI: 10.1134/s0031918x23602329

A. N. Maznichevsky, R. V. Sprikut, A. S Kibardin, A. A. Firsov

{"title":"Mechanical and Magnetic Properties of Chromium–Nickel Maraging Stainless Steel 04Kh13N8MTYu–VI","authors":"A. N. Maznichevsky, R. V. Sprikut, A. S Kibardin, A. A. Firsov","doi":"10.1134/s0031918x23602329","DOIUrl":"https://doi.org/10.1134/s0031918x23602329","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3>Currently, the development of new high performance magnetoelectric engines and generators that require high strength materials with specific magnetic characteristics is a relevant problem. The possibility of using maraging steels—in particular, the steel developed under brand 04Kh13N8MTYu–VI by Lasmet Co.—as rotor poles for high speed electric machines with permanent magnets due to the favorable combination of their mechanical properties, improved corrosion resistance, and impact toughness has been considered. The mechanical and magnetic properties of steel 04Kh13N8MTYu–VI have been investigated. Despite the fact that the maximum value of magnetic permeability in steel 04Kh13N8MTYu–VI is substantially lower than that in steels 3 and 30KhGSA, it is shown that the difference in the magnitude of the electromagnetic torque between engines in which different steels 30KhGSA and 04Kh13N8MTYu–VI are used is less than 0.2%. Considering the higher strength characteristics of steel 04Kh13N8MTYu–VI compared to 30KhGSA, there is a potential opportunity to increase the rotor rotation frequency by 25% with the use of a rotor made of steel 04Kh13N8MTYu–VI.","PeriodicalId":20180,"journal":{"name":"Physics of Metals and Metallography","volume":"79 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140624404","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}

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Microstructure Features of Yttrium Orthoferrite Thin Films on Sapphire 蓝宝石上正铁钇薄膜的微观结构特征

IF 1.2 4区材料科学

Physics of Metals and Metallography Pub Date : 2024-04-21 DOI: 10.1134/s0031918x23602287

A. L. Vasiliev, I. A. Subbotin, A. O. Belyaeva, Yu. M. Chesnokov, V. V. Izyurov, K. A. Merentsova, M. S. Artemiev, S. S. Dubinin, A. P. Nosov, E. M. Pashaev

{"title":"Microstructure Features of Yttrium Orthoferrite Thin Films on Sapphire","authors":"A. L. Vasiliev, I. A. Subbotin, A. O. Belyaeva, Yu. M. Chesnokov, V. V. Izyurov, K. A. Merentsova, M. S. Artemiev, S. S. Dubinin, A. P. Nosov, E. M. Pashaev","doi":"10.1134/s0031918x23602287","DOIUrl":"https://doi.org/10.1134/s0031918x23602287","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3>X-ray diffraction and electron microscopy were used to examine the crystal structure features of ultrathin (3–50 nm) yttrium orthoferrite films, obtained by magnetron sputtering of stoichiometric composition target on α-Al2O3 substrates with orientation. The morphology and crystal structure of the films differ significantly depending on their thickness. In the thinnest films, several phases are formed, including yttrium orthoferrite with an orthorhombic crystal lattice (o-YFeO3), yttrium hexaferrite with a hexagonal crystal lattice (h-YFeO3), iron-yttrium garnet (Y3Fe5O12), and iron oxides such as hematite and maghemite. The study examines the local composition and determines the orientation ratios between the crystallized phases and the substrate. The films with a thickness greater than 10 nm predominantly exhibit a highly textured phase of o-YFeO3 with a small admixture of iron-yttrium garnet.","PeriodicalId":20180,"journal":{"name":"Physics of Metals and Metallography","volume":"122 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140624376","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}

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Micromagnetic Simulation of Irregular Magnetization Reversal Dynamics in a Nanosized Permalloy Film with a Stepped Relief of the Boundary Surface 边界表面有阶梯凸起的纳米级坡莫合金薄膜中不规则磁化反转动力学的微磁模拟

IF 1.2 4区材料科学

Physics of Metals and Metallography Pub Date : 2024-04-21 DOI: 10.1134/s0031918x23602391

V. V. Zverev

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The Effect of Multidirectional Forging on the Microstructure and Superplasticity of the Al–Mg–Si–Cu System Alloys with Different Contents of Mg and Si 多向锻造对不同镁和硅含量的 Al-Mg-Si-Cu 系合金微观结构和超塑性的影响

IF 1.2 4区材料科学

Physics of Metals and Metallography Pub Date : 2024-04-21 DOI: 10.1134/s0031918x23602172

A. G. Mochugovskiy, E. U. Chukwuma, A. V. Mikhaylovskaya

{"title":"The Effect of Multidirectional Forging on the Microstructure and Superplasticity of the Al–Mg–Si–Cu System Alloys with Different Contents of Mg and Si","authors":"A. G. Mochugovskiy, E. U. Chukwuma, A. V. Mikhaylovskaya","doi":"10.1134/s0031918x23602172","DOIUrl":"https://doi.org/10.1134/s0031918x23602172","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3>This study focuses on investigating the effect of Mg and Si content in different ratios on the microstructure evolution and superplasticity after processing by multidirectional isothermal forging of the Al–Mg–Si–Cu based alloys with additions of Fe and Ni forming large particles of phases of crystallization origin and dispersoid-forming elements Sc and Zr. The study examined alloys with the following Mg/Si content: 1.2/0.4 (3), 1.2/0.7 (1.7), and 2.0/0.7 (2.8) (wt %). The alloys underwent six cycles of isothermal multidirectional forging (MDF) at a temperature of 325°C with cumulative deformation of up to ∑ε = 14.4. During the MDF process, fragmentation occurred in particles of Mg2Si and Al9FeNi eutectic phases, resulting in the formation of particles with sizes of 0.6–0.7 and 1.2–1.5 µm, respectively. Due to particle stimulated nucleation mechanism and suppressed grain growth by nanoscale dispersoids the finegrained structure with a mean grain size of 2 μm was formed in alloys. An increase in Si concentration at constant Mg content, as well as an increase in Mg and Si concentration at a close Mg/Si ratio leads to an increase in fraction of recrystallized grains and a decrease in grain size after MDF. The alloy with the lowest Mg and Si content has shown the highest elongation under superplastic deformation, which is explained by the reduced fraction of Mg2Si phase particles of crystallization origin.","PeriodicalId":20180,"journal":{"name":"Physics of Metals and Metallography","volume":"118 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140624415","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}

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Distribution of Cobalt Co2+ Ions in Single Crystals of Spinel Li0.5Ga2.5O4 尖晶石 Li0.5Ga2.5O4 单晶中 Co2+ 钴离子的分布

IF 1.2 4区材料科学

Physics of Metals and Metallography Pub Date : 2024-04-21 DOI: 10.1134/s0031918x23602883

V. V. Shapovalov, V. A. Shapovalov, T. V. Drokina, A. M. Vorotynov, V. I. Val’kov

{"title":"Distribution of Cobalt Co2+ Ions in Single Crystals of Spinel Li0.5Ga2.5O4","authors":"V. V. Shapovalov, V. A. Shapovalov, T. V. Drokina, A. M. Vorotynov, V. I. Val’kov","doi":"10.1134/s0031918x23602883","DOIUrl":"https://doi.org/10.1134/s0031918x23602883","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">\u0000Abstract\u0000</h3>The distribution of Co2+ ions over sublattices and structurally nonequivalent positions in the unit cell of the crystal lattice of a single crystal of lithium gallium spinel Li0.5Ga2.5O4 is shown. This distribution determines the properties of both mono- and nanocrystalline substances. The distribution is obtained by a special technology and is manifested in the electron paramagnetic resonance (EPR) spectra. The distribution of Co2+ ions depends on the structural and magnetic nonequivalence. The structural and magnetic nonequivalence causes a multiminimum behavior of the crystal field potential in the unit cells of single crystals at the locations of Co2+ ions. The Co2+ ions are found in complexes with tetrahedral and octahedral oxygen ions. Three types of EPR spectra of Co2+ ions have been found and investigated. The ({text{Co}}_{{{text{tetr}}}}^{{2 + }}) spectrum is attributed to the Co2+ ion, which replaces the Ga3+ ion located in a tetrahedral oxygen environment. The spectrum of the ({text{Co}}_{{{text{oct}}}}^{{2 + }}) ion located in the crystal field with axial symmetry belongs to the Co2+ ion replacing the Li+ ion located in an octahedral oxygen environment. The spectrum of the ({text{Co}}_{{{text{oct}}}}^{{2 + }}) ion located in a low symmetry crystal field belongs to the Co2+ ion replacing the Ga3+ ion located in an octahedral oxygen environment. The nearest cationic environment of the ion creates rhombic distortions due to the different valence numbers of Li+ and Ga3+. The results of studying the angular dependences of the spectra show the presence of four and twelve magnetically nonequivalent positions in the unit cells.","PeriodicalId":20180,"journal":{"name":"Physics of Metals and Metallography","volume":"17 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140624640","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}

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Influence of Deposition Conditions on the Morphology of Cerium Oxide Particles 沉积条件对氧化铈粒子形态的影响

IF 1.2 4区材料科学

Physics of Metals and Metallography Pub Date : 2024-04-21 DOI: 10.1134/s0031918x23602561

O. A. Goryacheva, A. V. Ushakov, A. A. Bakal, N. R. Popova

引用次数: 0