Pub Date : 2024-02-05DOI: 10.1134/s0031918x23601178
Jai Singh, S. K. Nath
Abstract
This study investigates the utilization of cyclic heat treatment (CHT), also referred to as thermal cycling, to design microstructures in steel to achieve specific properties. Through a comprehensive review of existing literature, it analyzes the influence of CHT on microstructure, strengthening mechanisms, and structure-property relationships, drawing parallels with conventional heat treatment methods. Mechanical properties are examined to establish meaningful correlations with structural modifications. The study delves into the impact of CHT parameters on microstructural changes and suggests to optimize these parameters to attain an ideal microstructure. While underscoring the potential advantages of CHT in enhancing steel’s mechanical properties, it also conscientiously acknowledges its limitations, concluding with valuable recommendations for future research and practical implementation.
{"title":"Enhancing Steel Properties through Microstructure Design Using Cyclic Heat Treatment: A Comprehensive Review","authors":"Jai Singh, S. K. Nath","doi":"10.1134/s0031918x23601178","DOIUrl":"https://doi.org/10.1134/s0031918x23601178","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>This study investigates the utilization of cyclic heat treatment (CHT), also referred to as thermal cycling, to design microstructures in steel to achieve specific properties. Through a comprehensive review of existing literature, it analyzes the influence of CHT on microstructure, strengthening mechanisms, and structure-property relationships, drawing parallels with conventional heat treatment methods. Mechanical properties are examined to establish meaningful correlations with structural modifications. The study delves into the impact of CHT parameters on microstructural changes and suggests to optimize these parameters to attain an ideal microstructure. While underscoring the potential advantages of CHT in enhancing steel’s mechanical properties, it also conscientiously acknowledges its limitations, concluding with valuable recommendations for future research and practical implementation.</p>","PeriodicalId":20180,"journal":{"name":"Physics of Metals and Metallography","volume":"37 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139688604","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}
Pub Date : 2024-02-05DOI: 10.1134/s0031918x22601500
Yong Chen, Xianrui Zhao, Tao Zhang, Daochun Hu, Chenfu Fang, Yapeng Cai
Abstract
The cable-type welding wire (CWW) submerged arc surfacing (SAS) is an innovative welding process with the advantages of high efficiency, energy saving, and good welding quality. At present, this welding process has been applied to repair the large structure. This study investigate the arc heat efficiency and arc heat distribution of CWW SAS using the mathematical calculation method. The deposition rate and the surfacing layer area of CWW SAS increases with the increasing welding current. The deposition rate and the surfacing layer area of CWW SAS are larger than those in single-wire SAS. The ratio of the surfacing layer area between CWW SAS and single-wire SAS is similar to the ratio of the surfacing deposition rates between CWW SAS and single-wire SAS. The efficiency of the arc heat on melting wire in CWW SAS is larger than that in single-wire SAS. The arc heat working on base metal in CWW SAS is lower than that in single-wire SAS, leading to a smaller molten base metal area. The arc heat working on droplet transfer in CWW SAS is greater than that in single-wire SAS, leading to a larger surfacing area.
摘要 电缆型焊丝（CWW）埋弧堆焊（SAS）是一种创新的焊接工艺，具有高效、节能、焊接质量好等优点。目前，这种焊接工艺已被应用于大型结构的修复。本研究采用数学计算方法研究了 CWW SAS 的电弧热效率和电弧热分布。CWW SAS 的熔敷率和堆焊层面积随焊接电流的增大而增大。CWW SAS 的熔敷率和堆焊层面积均大于单丝 SAS。CWW SAS 与单丝 SAS 的堆焊层面积之比类似于 CWW SAS 与单丝 SAS 的堆焊沉积速率之比。在 CWW SAS 中，熔化金属丝的电弧热效率大于单丝 SAS。CWW SAS 对基底金属的电弧热量低于单丝 SAS，导致基底金属熔化面积较小。在 CWW SAS 中，熔滴传递的电弧热量大于单丝 SAS，因此堆焊面积较大。
{"title":"Arc Heat Distribution in Cable-Type Welding Wire Submerged Arc Surfacing","authors":"Yong Chen, Xianrui Zhao, Tao Zhang, Daochun Hu, Chenfu Fang, Yapeng Cai","doi":"10.1134/s0031918x22601500","DOIUrl":"https://doi.org/10.1134/s0031918x22601500","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The cable-type welding wire (CWW) submerged arc surfacing (SAS) is an innovative welding process with the advantages of high efficiency, energy saving, and good welding quality. At present, this welding process has been applied to repair the large structure. This study investigate the arc heat efficiency and arc heat distribution of CWW SAS using the mathematical calculation method. The deposition rate and the surfacing layer area of CWW SAS increases with the increasing welding current. The deposition rate and the surfacing layer area of CWW SAS are larger than those in single-wire SAS. The ratio of the surfacing layer area between CWW SAS and single-wire SAS is similar to the ratio of the surfacing deposition rates between CWW SAS and single-wire SAS. The efficiency of the arc heat on melting wire in CWW SAS is larger than that in single-wire SAS. The arc heat working on base metal in CWW SAS is lower than that in single-wire SAS, leading to a smaller molten base metal area. The arc heat working on droplet transfer in CWW SAS is greater than that in single-wire SAS, leading to a larger surfacing area.</p>","PeriodicalId":20180,"journal":{"name":"Physics of Metals and Metallography","volume":"39 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139688612","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}
Pub Date : 2024-02-05DOI: 10.1134/s0031918x23601889
Abstract
Here we present the results of the study of the joint manifestation of the effects of anisotropic spin waves (SW) propagation in a system of laterally and vertically coupled ferrimagnetic microwaveguides when both the magnetization angle and air gap between waveguide are changed. The micromagnetic modeling method based on the numerical solution of the Landau–Lifshitz–Hilbert equation was used to provide the possibility of controlling the direction of SW propagation in a system of laterally and vertically coupled iron-yttrium garnet (YIG) microwaveguides by changing the magnetization angle and direction of the equilibrium of magnetization direction. The spatial distributions of the dynamic magnetization out-of-plane component of the SW excited in two microwaveguides located on the same substrate obtained in micromagnetic simulations indicate a change in the nature of the SW power localization in the output sections of the microwaveguides. The variation of the magnetization angle of the array leads to the variation of the transverse width of the spin-wave beam and localization of the amplitude maximum in each of the microwaveguides within the array. The joint manifestation of dipole coupling effects in each separately taken layer of the structure realizes the regime of non-diffraction propagation of the spin-wave beam.
{"title":"Control of Spin Wave Propagation in the System of Laterally and Vertically Coupled Ferimagnetic Stripes by the Varying of the Equilibrium of Magnetization Direction","authors":"","doi":"10.1134/s0031918x23601889","DOIUrl":"https://doi.org/10.1134/s0031918x23601889","url":null,"abstract":"<span> <h3>Abstract</h3> <p>Here we present the results of the study of the joint manifestation of the effects of anisotropic spin waves (SW) propagation in a system of laterally and vertically coupled ferrimagnetic microwaveguides when both the magnetization angle and air gap between waveguide are changed. The micromagnetic modeling method based on the numerical solution of the Landau–Lifshitz–Hilbert equation was used to provide the possibility of controlling the direction of SW propagation in a system of laterally and vertically coupled iron-yttrium garnet (YIG) microwaveguides by changing the magnetization angle and direction of the equilibrium of magnetization direction. The spatial distributions of the dynamic magnetization out-of-plane component of the SW excited in two microwaveguides located on the same substrate obtained in micromagnetic simulations indicate a change in the nature of the SW power localization in the output sections of the microwaveguides. The variation of the magnetization angle of the array leads to the variation of the transverse width of the spin-wave beam and localization of the amplitude maximum in each of the microwaveguides within the array. The joint manifestation of dipole coupling effects in each separately taken layer of the structure realizes the regime of non-diffraction propagation of the spin-wave beam.</p> </span>","PeriodicalId":20180,"journal":{"name":"Physics of Metals and Metallography","volume":"254 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139688776","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}
Pub Date : 2024-02-05DOI: 10.1134/s0031918x23600884
Y. F. Wang, H. Zhou, J. H. Wang, Y. Liu, H. Tu, X. P. Su
Abstract
In this study, an experimental device was designed to conduct melt quenching of Al–18Si alloy. The effect of annealing treatment on microstructure and mechanical properties of Al–18Si alloy cast by melt quenching was studied. The results showed that the microstructure of Al–18Si alloy cast by melt quenching was transformed into a pseudo-eutectic microstructure. With the increasing annealing temperature, the dissolution and diffusion rates of the eutectic silicon phase increased, and with the extension of holding time, eutectic silicon tended to spherulite. The best spherulite microstructure was obtained by annealing the alloy at 580°C or 40 min, and the silicon phase surface shape factor (φ) in the microstructure was 0.8. After annealing at 580°C for 40 min, the maximum impact toughness (σb) and elongation (δ) of Al–18Si alloy cast by melt quenching was 99.0 J/cm2 and 13.6%, respectively. Compared with the unannealed Al–18Si alloy cast by melt quenching, the impact toughness and elongation of the annealed alloy increased by 239.0 and 112.5%, respectively.
{"title":"Effect of Annealing on Microstructure and Mechanical Properties of Al–18Si Alloy Cast by Melt Quenching","authors":"Y. F. Wang, H. Zhou, J. H. Wang, Y. Liu, H. Tu, X. P. Su","doi":"10.1134/s0031918x23600884","DOIUrl":"https://doi.org/10.1134/s0031918x23600884","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>In this study, an experimental device was designed to conduct melt quenching of Al–18Si alloy. The effect of annealing treatment on microstructure and mechanical properties of Al–18Si alloy cast by melt quenching was studied. The results showed that the microstructure of Al–18Si alloy cast by melt quenching was transformed into a pseudo-eutectic microstructure. With the increasing annealing temperature, the dissolution and diffusion rates of the eutectic silicon phase increased, and with the extension of holding time, eutectic silicon tended to spherulite. The best spherulite microstructure was obtained by annealing the alloy at 580°C or 40 min, and the silicon phase surface shape factor (φ) in the microstructure was 0.8. After annealing at 580°C for 40 min, the maximum impact toughness (σ<sub>b</sub>) and elongation (δ) of Al–18Si alloy cast by melt quenching was 99.0 J/cm<sup>2</sup> and 13.6%, respectively. Compared with the unannealed Al–18Si alloy cast by melt quenching, the impact toughness and elongation of the annealed alloy increased by 239.0 and 112.5%, respectively.</p>","PeriodicalId":20180,"journal":{"name":"Physics of Metals and Metallography","volume":"305 2 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139688772","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}
Pub Date : 2024-02-05DOI: 10.1134/s0031918x22600774
Zhonglin Wu, Cainian Jing, Yan Feng, Zhaotong Li, Jingrui Zhao, Tao Lin
Abstract
The effect of dynamic strain rate on the microstructure and properties of Q&P980 high-strength steel is studied. The quenching and partitioning, and tempering (Q&P-T) heat-treatment process was used to select different dynamic strain rates (1, 600, 1200 s–1) for tensile testing. The microstructure was characterized by OM, XRD, SEM, EBSD, and other tests to investigate the relationship between microstructure and mechanical properties. The results show that the strengthening stage and the necking stage of the tested steel appear to be prolonged, at dynamic strain rates. The strength and plasticity of the tested steel were significantly improved. The microstructure and morphology of the tested steels in the deformed and undeformed areas were found to be increasingly near to each other at dynamic strain rates of 600 and 1200 s–1. Under the impact of the TRIP effect and the adiabatic temperature rise effect at high strain rate stretching, the microstructure appears to be refined and elongated. The tested steel performed best overall at a dynamic strain rate of 1200 s–1, with a tensile strength of 1080 MPa and an energy absorption strength of 38.97 GPa%.
{"title":"The Effect of Strain Rate on the Microstructure and Mechanical Properties of Q&P 980 Steel","authors":"Zhonglin Wu, Cainian Jing, Yan Feng, Zhaotong Li, Jingrui Zhao, Tao Lin","doi":"10.1134/s0031918x22600774","DOIUrl":"https://doi.org/10.1134/s0031918x22600774","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The effect of dynamic strain rate on the microstructure and properties of Q&P980 high-strength steel is studied. The quenching and partitioning, and tempering (Q&P-T) heat-treatment process was used to select different dynamic strain rates (1, 600, 1200 s<sup>–1</sup>) for tensile testing. The microstructure was characterized by OM, XRD, SEM, EBSD, and other tests to investigate the relationship between microstructure and mechanical properties. The results show that the strengthening stage and the necking stage of the tested steel appear to be prolonged, at dynamic strain rates. The strength and plasticity of the tested steel were significantly improved. The microstructure and morphology of the tested steels in the deformed and undeformed areas were found to be increasingly near to each other at dynamic strain rates of 600 and 1200 s<sup>–1</sup>. Under the impact of the TRIP effect and the adiabatic temperature rise effect at high strain rate stretching, the microstructure appears to be refined and elongated. The tested steel performed best overall at a dynamic strain rate of 1200 s<sup>–1</sup>, with a tensile strength of 1080 MPa and an energy absorption strength of 38.97 GPa%.</p>","PeriodicalId":20180,"journal":{"name":"Physics of Metals and Metallography","volume":"9 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139688607","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}
Pub Date : 2024-02-05DOI: 10.1134/s0031918x2110094x
Bibin John, S. Varadharajaperumal
Abstract
Despite the deep interest of materials scientists in cadmium telluride (CdTe) crystal growth, there is no single source to which the researchers can turn towards for comprehensive knowledge of CdTe compound semiconductor synthesis protocols, physical properties and performance. Considering this, the present review work focuses to bridge this shortcoming. The direct band gap (Eg) CdTe crystals have been in limelight in photovoltaic application (PV) since the optoelectronic properties such as Eg (1.49 eV), absorption coefficient (~105 cm–1), p-type conductivity, carrier concentration (6 × 1016 cm–3) and mobility (1040 cm2/(V s)) at the room temperature are reported that optimum for solar cells. Additionally, Cd-based compounds such as CdTe and CdZnTe have also been widely studied in the field of α and γ-ray radiation detector, because of their extraordinary advantages like large atomic number, low weight, high mechanical hardness, flexibility, and the availability of the constituent materials. CdTe has demerits like toxicity and high melting temperature, which will complicate the growth of stoichiometric cadmium telluride crystals at high temperatures. In this regard, the review work focused the periodic evolution of the growth protocols until now. The different synthesis methods, characterization, and recent progress in the field of crystalline CdTe were discussed briefly. Important optical and electrical characteristics are presented in the tables and remaining issues have discussed, this could be looked into for further research. The applications of CdTe crystals for photovoltaic fields are also discussed in this review paper.
{"title":"Comprehensive Review on CdTe Crystals: Growth, Properties, and Photovoltaic Application","authors":"Bibin John, S. Varadharajaperumal","doi":"10.1134/s0031918x2110094x","DOIUrl":"https://doi.org/10.1134/s0031918x2110094x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Despite the deep interest of materials scientists in cadmium telluride (CdTe) crystal growth, there is no single source to which the researchers can turn towards for comprehensive knowledge of CdTe compound semiconductor synthesis protocols, physical properties and performance. Considering this, the present review work focuses to bridge this shortcoming. The direct band gap (<i>E</i><sub>g</sub>) CdTe crystals have been in limelight in photovoltaic application (PV) since the optoelectronic properties such as <i>E</i><sub>g</sub> (1.49 eV), absorption coefficient (~10<sup>5</sup> cm<sup>–1</sup>), <i>p</i>-type conductivity, carrier concentration (6 × 10<sup>16</sup> cm<sup>–3</sup>) and mobility (1040 cm<sup>2</sup>/(V s)) at the room temperature are reported that optimum for solar cells. Additionally, Cd-based compounds such as CdTe and CdZnTe have also been widely studied in the field of α and γ-ray radiation detector, because of their extraordinary advantages like large atomic number, low weight, high mechanical hardness, flexibility, and the availability of the constituent materials. CdTe has demerits like toxicity and high melting temperature, which will complicate the growth of stoichiometric cadmium telluride crystals at high temperatures. In this regard, the review work focused the periodic evolution of the growth protocols until now. The different synthesis methods, characterization, and recent progress in the field of crystalline CdTe were discussed briefly. Important optical and electrical characteristics are presented in the tables and remaining issues have discussed, this could be looked into for further research. The applications of CdTe crystals for photovoltaic fields are also discussed in this review paper.</p>","PeriodicalId":20180,"journal":{"name":"Physics of Metals and Metallography","volume":"16 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139688775","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}
Pub Date : 2024-02-05DOI: 10.1134/s0031918x23601415
S. S. Belykh, C. V. Yerin
Abstract
The features of the magneto-optical effect of optical density change in magnetic emulsions with low interfacial tension, synthesized on the basis of kerosene magnetic fluid and AMG-10 oil, are studied. It is shown that the magnitude and sign of the effect essentially depend on the size of the emulsion droplets. The effect is interpreted on the basis of the anomalous diffraction approximation, and a method is proposed for estimating the size of magnetic emulsion microdroplets depending on the sign of the magneto-optical effect in longitudinal and transverse magnetic fields.
{"title":"Influence of the Microdroplets Sizes of Magnetic Emulsions on the Magneto-Optical Effect","authors":"S. S. Belykh, C. V. Yerin","doi":"10.1134/s0031918x23601415","DOIUrl":"https://doi.org/10.1134/s0031918x23601415","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The features of the magneto-optical effect of optical density change in magnetic emulsions with low interfacial tension, synthesized on the basis of kerosene magnetic fluid and AMG-10 oil, are studied. It is shown that the magnitude and sign of the effect essentially depend on the size of the emulsion droplets. The effect is interpreted on the basis of the anomalous diffraction approximation, and a method is proposed for estimating the size of magnetic emulsion microdroplets depending on the sign of the magneto-optical effect in longitudinal and transverse magnetic fields.</p>","PeriodicalId":20180,"journal":{"name":"Physics of Metals and Metallography","volume":"23 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139689422","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}
Pub Date : 2024-02-05DOI: 10.1134/s0031918x23601452
I. F. Sharafullin, A. R. Yuldasheva, D. I. Abdrakhmanov, A. G. Nugumanov
Abstract
The spin Heisenberg antiferromagnet on the frustrated triangular lattice is known to feature various zero-field ground-state phases, consisting of skyrmion lattice phase and the multiple spin spiral ground states as well as a spiral spin state. Using steepest-descent method we investigate the properties of this system and the related ferroelectric lattice in the presence of a finite magnetoelectric coupling, addressing both the ground-state phase diagram. In addition to the zero-field ground states, we find at moderate values magnetoelectric coupling a skyrmion lattice phase. We show that magnetic frustration induces the creation and emergence of a skyrmion lattice at moderate values of Dzyaloshinskii–Moriya interaction and interface magnetoelectric coupling with adjacent ferroelectric layer. At intermediate Dzyaloshinskii–Moriya interaction, we identify that the skyrmion lattice states are stabilized by a spin anisotropy.
{"title":"Skyrmion Lattices Phase Driven by Interfacial-Engineered Dzyaloshinskii–Moriya Interaction in Frustrated Antiferromagnetic/Ferroelectric Bilayers","authors":"I. F. Sharafullin, A. R. Yuldasheva, D. I. Abdrakhmanov, A. G. Nugumanov","doi":"10.1134/s0031918x23601452","DOIUrl":"https://doi.org/10.1134/s0031918x23601452","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The spin Heisenberg antiferromagnet on the frustrated triangular lattice is known to feature various zero-field ground-state phases, consisting of skyrmion lattice phase and the multiple spin spiral ground states as well as a spiral spin state. Using steepest-descent method we investigate the properties of this system and the related ferroelectric lattice in the presence of a finite magnetoelectric coupling, addressing both the ground-state phase diagram. In addition to the zero-field ground states, we find at moderate values magnetoelectric coupling a skyrmion lattice phase. We show that magnetic frustration induces the creation and emergence of a skyrmion lattice at moderate values of Dzyaloshinskii–Moriya interaction and interface magnetoelectric coupling with adjacent ferroelectric layer. At intermediate Dzyaloshinskii–Moriya interaction, we identify that the skyrmion lattice states are stabilized by a spin anisotropy.</p>","PeriodicalId":20180,"journal":{"name":"Physics of Metals and Metallography","volume":"15 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139688601","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}
Pub Date : 2024-02-05DOI: 10.1134/s0031918x23601427
Abstract
The Monte Carlo simulation of behavior and magnetic properties of three types of active used spin-valve structures is carried out. It is identified the effect of magnetic anisotropy and intra- and interlayer exchange interaction influence on hysteresis phenomena in a spin-valve structures upon varying the thickness of nanosized ferromagnetic films.
{"title":"Simulation of Magnetic Properties of Different Types of Spin-Valve Nanostructures","authors":"","doi":"10.1134/s0031918x23601427","DOIUrl":"https://doi.org/10.1134/s0031918x23601427","url":null,"abstract":"<span> <h3>Abstract</h3> <p>The Monte Carlo simulation of behavior and magnetic properties of three types of active used spin-valve structures is carried out. It is identified the effect of magnetic anisotropy and intra- and interlayer exchange interaction influence on hysteresis phenomena in a spin-valve structures upon varying the thickness of nanosized ferromagnetic films.</p> </span>","PeriodicalId":20180,"journal":{"name":"Physics of Metals and Metallography","volume":"117 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139688603","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}
Pub Date : 2024-02-05DOI: 10.1134/s0031918x23601312
Abstract
For decades, researchers have been concerned about the formability of manufactured wrought cast iron, with brittleness being a major issue in these alloys. To address this, the ferrite phase has been identified as a suitable matrix for cast iron deformation due to its ability to provide satisfactory ductility and avoid brittle limitations. In this study, machined parts of ductile cast iron were subjected to an annealing process at approximately 900°C for 1 h before undergoing hot plastic deformation with varying degrees of reduction. The deformation was carried out using a cylinder-covered hot compression (CCC or CCHC) technique. The primary objective of this study is to gain a microscopic understanding of hot plastically deformed ductile cast iron and propose a mathematically formulated flow strain that takes into account the contributions of the microstructure’s constituent phases. This analysis aims to provide a comprehensive characterization of deformed graphite within the microstructure. Optical microscopy (OM) and scanning electron microscopy (SEM) were employed to obtain results for the characterization. The findings revealed that as the reduction increased, spheroidal graphite tended to transform into a lamellar structure, resulting in diverse properties. Additionally, a microhardness test was conducted to assess the variation in mechanical properties throughout each deformation step.
{"title":"On the Morphology Variation of Graphite in Ductile Cast Iron through Severe Plastic Deformation","authors":"","doi":"10.1134/s0031918x23601312","DOIUrl":"https://doi.org/10.1134/s0031918x23601312","url":null,"abstract":"<span> <h3>Abstract</h3> <p>For decades, researchers have been concerned about the formability of manufactured wrought cast iron, with brittleness being a major issue in these alloys. To address this, the ferrite phase has been identified as a suitable matrix for cast iron deformation due to its ability to provide satisfactory ductility and avoid brittle limitations. In this study, machined parts of ductile cast iron were subjected to an annealing process at approximately 900°C for 1 h before undergoing hot plastic deformation with varying degrees of reduction. The deformation was carried out using a cylinder-covered hot compression (CCC or CCHC) technique. The primary objective of this study is to gain a microscopic understanding of hot plastically deformed ductile cast iron and propose a mathematically formulated flow strain that takes into account the contributions of the microstructure’s constituent phases. This analysis aims to provide a comprehensive characterization of deformed graphite within the microstructure. Optical microscopy (OM) and scanning electron microscopy (SEM) were employed to obtain results for the characterization. The findings revealed that as the reduction increased, spheroidal graphite tended to transform into a lamellar structure, resulting in diverse properties. Additionally, a microhardness test was conducted to assess the variation in mechanical properties throughout each deformation step.</p> </span>","PeriodicalId":20180,"journal":{"name":"Physics of Metals and Metallography","volume":"10 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139688778","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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