{"title":"Influence of Low-Energy High-Current Electron Beam Exposure on the Phase Composition and Corrosion Resistance of the AM60 Magnesium Alloy","authors":"K. O. Akimov, K. V. Ivanov, M. G. Figurko","doi":"10.1134/s0031918x23603128","DOIUrl":"https://doi.org/10.1134/s0031918x23603128","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The surface of an AM60 (Al—5.5, Zn—0.2, Cu—0.009, Fe—0.005, Si—0.1, Ni —0.002, Mn—0.3 wt %, Mg—the rest) magnesium alloy was exposed to a low-energy high-current electron beam. After the irradiation, the content of the β-phase (Mg<sub>17</sub>Al<sub>12</sub>) decreases and the aluminum content increases in the alloy surface layer. After the exposure to the electron beam, the corrosion resistance of the alloy in a 1-molar NaCl solution increases significantly compared to the initial state. The physical reason for an increase in the alloy corrosion resistance after exposure to the electron beam is the higher corrosion resistance of the oxide film formed on the alloy surface due to the increased aluminum content.</p>","PeriodicalId":20180,"journal":{"name":"Physics of Metals and Metallography","volume":"33 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141166738","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}
I. V. Alekseev, S. V. Andreev, A. S. Volegov, N. V. Selezneva
{"title":"Magnetization Processes of Exchange Coupled Nd2(Fe,Co)14B Alloys in Various Demagnetized States","authors":"I. V. Alekseev, S. V. Andreev, A. S. Volegov, N. V. Selezneva","doi":"10.1134/s0031918x23603013","DOIUrl":"https://doi.org/10.1134/s0031918x23603013","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Processes of magnetization in exchange-coupled rapidly quenched nanocrystalline alloys Nd<sub>2</sub>(Fe<sub>1 – <i>x</i></sub>Co<sub><i>x</i></sub>)<sub>14</sub>B, where <i>x</i> = 0, 0.07, 0.2, 0.5, have been studied. Initial magnetization curves and interaction plots δ<i>M</i>(<i>H</i>) for various demagnetized states were obtained. Based on comparison of measurement results, influence of the pinning type mechanism on magnetization process in the Nd<sub>2</sub>(Fe<sub>1 – <i>x</i></sub>Co<sub><i>x</i></sub>)<sub>14</sub>B melt-spun ribbons is shown. Using δ<i>M</i>(<i>H</i>) plots, a change in intergrain exchange interaction depending on cobalt concentration in rapidly quenched Nd<sub>2</sub>(Fe<sub>1 – <i>x</i></sub>Co<sub><i>x</i></sub>)<sub>14</sub>B nanocrystalline alloys was investigated.</p>","PeriodicalId":20180,"journal":{"name":"Physics of Metals and Metallography","volume":"65 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141173462","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}
S. V. Tomilin, A. V. Karavaynikov, S. D. Lyashko, E. T. Milyukova, O. A. Tomilina, V. N. Berzhansky
{"title":"Resonance Enhancement of the Faraday Effect in a Magnetoplasmonic Composite","authors":"S. V. Tomilin, A. V. Karavaynikov, S. D. Lyashko, E. T. Milyukova, O. A. Tomilina, V. N. Berzhansky","doi":"10.1134/s0031918x23603001","DOIUrl":"https://doi.org/10.1134/s0031918x23603001","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The paper presents the results of a theoretical and experimental study of the enhancement of the magneto-optical Faraday effect in a magnetoplasmonic nanocomposite, caused by localized plasmon resonance (LPR) in metal nanoparticles. The nanocomposite comprises a three-layer structure of self-assembled gold nanoparticles in a bismuth-substituted iron-garnet matrix. It is shown theoretically and experimentally that the enhancement of the magneto-optical Faraday effect is determined by the action of a magnetic field on the magnetoplasmonic composite as an effective medium as a whole. In this case, in the magnetoplasmonic nanocomposite, the Faraday effect is enhanced at the LPR wavelengths and is slightly weakened in the region of short wavelengths relative to the LPR. It is theoretically shown that the complex gyration index in the off-diagonal terms of the effective permittivity tensor for the magnetoplasmonic composite, in addition to rotation of the polarization plane, leads to the appearance of alternating ellipticity in the vicinity of the plasmon resonance, which is observed in the form of asymmetry of magneto-optical rotation.</p>","PeriodicalId":20180,"journal":{"name":"Physics of Metals and Metallography","volume":"23 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141166725","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}
I. M. Sapovskii, N. V. Ilin, G. S. Kraynova, T. R. Rakhmatullaev, I. A. Tkachenko, V. V. Tkachev, V. S. Plotnikov, K. E. Pinchuk, A. M. Frolov
{"title":"Temperature Dependence of Magnetization and Exchange Interaction in Amorphous Fe–Ni–Si–B Alloys","authors":"I. M. Sapovskii, N. V. Ilin, G. S. Kraynova, T. R. Rakhmatullaev, I. A. Tkachenko, V. V. Tkachev, V. S. Plotnikov, K. E. Pinchuk, A. M. Frolov","doi":"10.1134/s0031918x24600155","DOIUrl":"https://doi.org/10.1134/s0031918x24600155","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The temperature dependence of the magnetization of rapidly quenched amorphous Fe–Ni–Si–B alloys was studied by the magnetometry method. The Curie temperatures were determined, and the exchange interaction parameters were calculated: the constants of spin-wave stiffness and exchange stiffness, the root mean-square range of the exchange interaction. The nearest neighboring distance between transition metal atoms was estimated based on the magnetic characteristics.</p>","PeriodicalId":20180,"journal":{"name":"Physics of Metals and Metallography","volume":"33 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141166727","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}
A. V. Skripov, O. A. Babanova, R. V. Skoryunov, A. V. Soloninin
{"title":"Anion Reorientations and Cation Diffusion in Nanostructured Closo-Borates: NMR and Quasielastic Neutron Scattering Studies","authors":"A. V. Skripov, O. A. Babanova, R. V. Skoryunov, A. V. Soloninin","doi":"10.1134/s0031918x23603050","DOIUrl":"https://doi.org/10.1134/s0031918x23603050","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The dynamical properties of sodium closo-borate NaCB<sub>11</sub>H<sub>12</sub> embedded into SiO<sub>2</sub>-based nanoporous scaffolds have been studied by nuclear magnetic resonance (NMR) and quasielastic neutron scattering (QENS) over wide temperature ranges. It has been found that a confinement of the closo-borate in nanopores suppresses the order-disorder phase transition, retaining the orientationally disordered phase with high reorientational mobility of the anions and high diffusive mobility of the cations down to low temperatures. This paper is based on the presentation at the RNIKS-2023 conference.</p>","PeriodicalId":20180,"journal":{"name":"Physics of Metals and Metallography","volume":"49 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141166737","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}
I. I. Gorbachev, E. I. Korzunova, V. V. Popov, D. M. Khabibulin, N. V. Urtsev
{"title":"Simulation of the Evolution of Phase Composition and Austenite Grain Size upon Multi-Pass Hot Deformation of Low-Alloy Steels","authors":"I. I. Gorbachev, E. I. Korzunova, V. V. Popov, D. M. Khabibulin, N. V. Urtsev","doi":"10.1134/s0031918x23602858","DOIUrl":"https://doi.org/10.1134/s0031918x23602858","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">\u0000<b>Abstract</b>\u0000</h3><p>The paper presents a model for predicting the structural characteristics and phase composition of low-alloy steels upon hot rolling in the multi-pass deformation mode. The model considers recovery, dynamic, primary, dynamic and static recrystallization of grains, and the normal grain growth, as well as nucleation (including accelerated nucleation during deformation), growth or dissolution, and coarsening of carbonitride particles. The comparison between the calculated results and the experimental data available in the publications shows a satisfactory agreement.</p>","PeriodicalId":20180,"journal":{"name":"Physics of Metals and Metallography","volume":"58 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141166750","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}
Yu. V. Korkh, E. A. Ponomareva, A. V. Druzhinin, E. G. Gerasimov, N. V. Mushnikov, T. V. Kuznetsova
{"title":"Temperature Studies of the LaMn2Si2 Intermetallide by the Raman Spectroscopy and Magnetic Force Microscopy Methods","authors":"Yu. V. Korkh, E. A. Ponomareva, A. V. Druzhinin, E. G. Gerasimov, N. V. Mushnikov, T. V. Kuznetsova","doi":"10.1134/s0031918x23603086","DOIUrl":"https://doi.org/10.1134/s0031918x23603086","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">\u0000<b>Abstract</b>\u0000</h3><p>Raman spectra of the LaMn<sub>2</sub>Si<sub>2</sub> compound were obtained for the first time by Raman spectroscopy. The change in the Raman spectral characteristics in the temperature range of 263–553 K was investigated. The high sensitivity of the Raman spectroscopy method to a change in the magnetic state caused by a temperature influence has been determined. A change in the spectral characteristics of the vibration mode of manganese atoms near the Curie and Neel temperatures has been revealed. The magnetic force microscopy technique was used to investigate the surface features of the LaMn<sub>2</sub>Si<sub>2</sub> compound at room temperature. A change in the type of magnetic domain structure in LaMn<sub>2</sub>Si<sub>2</sub> after cooling from 298 to 263 K has been found.</p>","PeriodicalId":20180,"journal":{"name":"Physics of Metals and Metallography","volume":"46 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141166752","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}
N. A. Kovalenko, V. V. Tarnavich, Yu. O. Chetverikov
{"title":"Investigation of the Absorption Properties of Multilayer Composites Based on ABS Plastic with Boron Nitride","authors":"N. A. Kovalenko, V. V. Tarnavich, Yu. O. Chetverikov","doi":"10.1134/s0031918x23602834","DOIUrl":"https://doi.org/10.1134/s0031918x23602834","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The absorption capabilities of various plastics, including those with different contents of boron nitride for ABS plastic, were simulated. Simulation was performed using the PHITS software package. In this study, the results of simulating the absorption capacity of plastic are compared with the experimental data. A case of the practical application of ABS plastic as neutron-absorbing shutters of a diaphragm is considered.</p>","PeriodicalId":20180,"journal":{"name":"Physics of Metals and Metallography","volume":"25 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140925783","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}
A. S. Fortuna, T. A. Morozova, D. Yu. Karpenkov, M. V. Gorshenkov
{"title":"The Features of the Phase Composition and Structure of a Rapidly Quenched Ferromagnetic Mn–Al–Ga Alloy","authors":"A. S. Fortuna, T. A. Morozova, D. Yu. Karpenkov, M. V. Gorshenkov","doi":"10.1134/s0031918x23602810","DOIUrl":"https://doi.org/10.1134/s0031918x23602810","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">\u0000<b>Abstract</b>—</h3><p>Rapidly quenched Mn<sub>55</sub>Al<sub>36</sub>Ga<sub>9</sub> ribbons have been obtained using a spinning method. In the initial quenched state, the ribbon structure is a two-phase one consisting of the ε and γ<sub>2</sub> phases. It has been established that, upon heating, the alloy undergoes a series of phase transformations, including the precipitation of the equilibrium β-Mn phase and its subsequent dissolution, the formation of the ferromagnetic τ phase from both the ε and γ<sub>2</sub> phases. The largest amount of the τ phase was obtained by annealing at a temperature of 700°C for 20 min. This work describes both the phase composition obtained as a result of annealing at different temperatures and the features of the microstructure studied via electron microscopy.</p>","PeriodicalId":20180,"journal":{"name":"Physics of Metals and Metallography","volume":"38 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140925849","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":"Capillary Phenomena during Interaction of Copper Melt with Dense and Porous MAX Phases with General Formula (Cr,Mn)2AlC","authors":"S. N. Zhevnenko, M. V. Gorshenkov","doi":"10.1134/s0031918x23602640","DOIUrl":"https://doi.org/10.1134/s0031918x23602640","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>In this study, we experimentally investigated the interaction of a pure copper melt with dense MAX phase (Cr,Mn)<sub>2</sub>AlC obtained as a result of sintering by the spark plasma method and with a porous phase compacted by room temperature pressing. The porous phase (porosity 20%) absorbs a molten copper at temperatures above 1200°C. The absorption kinetics is measured using a high speed (HS) thermo-visioning camera and an HS video camera. The experiments are carried out under a vacuum pressure of 10<sup>–3</sup> Pa. Scanning electron microscopy studies, microanalyses by the method of X-ray spectroscopy, and X-ray diffraction studies have shown that chemical reactions of the MAX phase with a copper melt lead to the formation of a solution of aluminum and chromium in copper and the decomposition of the MAX phase to stable and/or metastable chromium carbides. The dense sintered sample reacts with the melt though the contact (wetting) angles are more than 100°. The difference between porous and dense samples is in the reaction kinetics. The obtained results are compared with the earlier conducted experiments on wetting of the Cr<sub>2</sub>AlC MAX phase by a Cu melt (with 0.8 at % Cr). The conditions in the earlier described experiments and the results of determining changes in the chemical composition and the phase composition during capillary experiments indicate that a composite material with a submicrometer structure of chromium carbide impregnated with aluminum bronze can be obtained.</p>","PeriodicalId":20180,"journal":{"name":"Physics of Metals and Metallography","volume":"357 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140942219","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}