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Journal articles on the topic 'Magnetic deformation properties'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

SZABÓ, DÉNES, and MIKLÓS ZRÍNYI. "NONHOMOGENEOUS, NON-LINEAR DEFORMATION OF POLYMER GELS SWOLLEN WITH MAGNETO-RHEOLOGICAL SUSPENSIONS." International Journal of Modern Physics B 16, no. 17n18 (2002): 2616–21. http://dx.doi.org/10.1142/s0217979202012748.

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Polymer gels swollen with a magneto-rheological suspension are highly elastic materials with considerable magnetic susceptibility. In this work the magnetic field induced deformation and motion of these magnetic polymer systems is discussed. We present a continuum material model by introducing magnetic equations into non-linear elasticity theory. The material properties of these magnetic rubber-like substances are characterized with a Langevin type magnetization and a neo-Hookean strain energy function. The non-linear character of the equations that describe the material properties and the non

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2

Mushnikov, A. N., A. M. Povolotskaya, S. M. Zadvorkin, and K. D. Kryucheva. "Effect of symmetrical biaxial tension on the magnetic properties of the composite specimen of two steel plates with different mechanical and magnetic properties." Defektoskopiâ, no. 9 (October 2, 2024): 25–39. http://dx.doi.org/10.31857/s0130308224090031.

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The results of studying the behavior of the magnetic characteristics of two-layer material containing layers of annealed sheet low-carbon Steel 15 and sheet metastable austenitic 12Kh18N9Т steel, subjected to cold rolling with a compression of 50 %, under biaxial symmetric tension have been presented. Experiments on biaxial deformation were carried out on the original biaxial testing machine, allowed to determine the physical properties of materials during elastic-plastic deformation independently along two axes. It has been shown that the coercive force of the studied two-layer material vary

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3

Giannouli, Christina. "Use of Superficial Magnetic Techniques to Evaluate the Mechanical Properties of Duplex Stainless Steels." Key Engineering Materials 495 (November 2011): 253–56. http://dx.doi.org/10.4028/www.scientific.net/kem.495.253.

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Aim of this study is the correlation among magnetic properties, tensile deformation and microstructure of the duplex stainless steel 2205. This correlation is achieved by the magnetic ferrite phase of the two phase microstructure. The amount of Barkhausen noise for a given material is linked with the amount of impurities, crystal dislocations, etc. and can be a good indication of mechanical properties of the material. Specimens of the alloy DSS2205 were tested under tensile deformation in different percentages and the magnetic measurements were taken online, during the tensile deformation. The

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Hai, N. H., N. M. Dempsey, and D. Givord. "Magnetic properties of hard magnetic FePt prepared by cold deformation." IEEE Transactions on Magnetics 39, no. 5 (2003): 2914–16. http://dx.doi.org/10.1109/tmag.2003.815762.

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Daem, Andries, Peter Sergeant, Luc Dupré, Somsubhro Chaudhuri, Vitaliy Bliznuk, and Leo Kestens. "Magnetic Properties of Silicon Steel after Plastic Deformation." Materials 13, no. 19 (2020): 4361. http://dx.doi.org/10.3390/ma13194361.

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The energy efficiency of electric machines can be improved by optimizing their manufacturing process. During the manufacturing of ferromagnetic cores, silicon steel sheets are cut and stacked. This process introduces large stresses near cutting edges. The steel near cutting edges is in a plastically deformed stress state without external mechanical load. The magnetic properties of the steel in this stress state are investigated using a custom magnetomechanical measurement setup, stress strain measurements, electrical resistance measurements, and transmission electron microscopic (TEM) measurem

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Bassani, Paola, Marco Breda, Katya Brunelli, et al. "Characterization of a Cold-Rolled 2101 Lean Duplex Stainless Steel." Microscopy and Microanalysis 19, no. 4 (2013): 988–95. http://dx.doi.org/10.1017/s1431927613001426.

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AbstractDuplex stainless steels (DSS) may be defined as a category of steels with a two-phase ferritic–austenitic microstructure, which combines good mechanical and corrosion properties. However, these steels can undergo significant microstructural modification as a consequence of either thermo-mechanical treatments (ferrite decomposition, which causes σ- and χ-phase formation and nitride precipitation) or plastic deformation at room temperature [austenite transformation into strain-induced martensite (SIM)]. These secondary phases noticeably affect the properties of DSS, and therefore are of

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Korneva, Anna, Galiya Korznikova, Rishat Kashaev, and Boris Straumal. "Microstructure Evolution and Some Properties of Hard Magnetic FeCr30Co8 Alloy Subjected to Torsion Combined with Tension." Materials 12, no. 18 (2019): 3019. http://dx.doi.org/10.3390/ma12183019.

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The hard magnetic alloy FeCr30Co8 alloy was subjected to severe plastic deformation (SPD) by torsion combined with tension in the temperature range of 750 °C to 850 °C. This range of deformation temperatures corresponds to the α solid solution on the Fe–Cr–Co phase diagram. The study of the alloy after SPD by means of X-ray diffraction (XRD) and scanning and transmission electron microscopy techniques showed the formation of a gradient microstructure with fine grain size in the surface layer and precipitation of the hard intermetallic σ-phase. Next, the magnetic and mechanical properties of th

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8

Ivanova, A. I., A. Yu Karpenkov, E. M. Semenova, I. I. Musabirov, and A. D. Vasiliev. "Effect of deformation on magnetic properties of Heusler alloys." Izvestiâ Akademii nauk SSSR. Seriâ fizičeskaâ 88, no. 5 (2024): 835–39. https://doi.org/10.31857/s0367676524050239.

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Magnetic properties of Heusler alloys with the Ni54.4Mn17.6Ga26.2Si1.8 composition subjected to comprehensive isothermal forging have been investigated. It was found that comprehensive isothermal forging leads to a shift in the temperatures of structural and magnetic phase transitions toward low temperatures, a slight decrease in magnetization and magnetocaloric effect, as well as a qualitative change in the magnetic domain structure.

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9

Sun, Yang, Javid A. Sheikh, and Gui-Lu Long. "Nuclear magnetic dipole properties and the triaxial deformation." Physics Letters B 533, no. 3-4 (2002): 253–58. http://dx.doi.org/10.1016/s0370-2693(02)01625-8.

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10

Gurau, Gheorghe, Carmela Gurau, Felicia Tolea, Mihaela Valeanu, Vedamanickam Sampath, and Leandru Gheorghe Bujoreanu. "Effect of Severe Plastic Deformation on the Structure and Magnetic Behaviour of an Fe-Mn-Si Shape Memory Alloy." Advanced Materials Research 1143 (February 2017): 240–46. http://dx.doi.org/10.4028/www.scientific.net/amr.1143.240.

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This work focuses on the relation between severe plastic deformation process via HSHPT and magnetic properties of an Fe–Mn–Si-Cr shape memory alloy. High speed high pressure torsion (HSHPT) was applied on cast state of alloy. Microstructure evolution of severe plastic deformed iron based alloy subjected to different deformation degree were investigated. The microstructure and phase compositions of alloy were characterized using optical microscopy, scanning electron microscopy and transmission electron microscopy. The magnetic properties are discussed on the basis of the severe plastic deformat

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Jang, Ye Ryeong, Wonjin Kim, Sumin Kim, and Wooyoung Lee. "Effect of Pressure on Ce-Substituted Nd-Fe-B Hot-Deformed Magnets in the Hot-Pressing Process." Materials 17, no. 15 (2024): 3769. http://dx.doi.org/10.3390/ma17153769.

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With the increasing demand for Nd-Fe-B magnets across various applications, the cost-effective substitution of Ce has garnered significant interest. Many studies have been conducted to achieve the high magnetic properties of Nd-Ce-Fe-B hot deformation magnets in which Nd is replaced with Ce. We propose a method to improve magnetic properties of the Ce-substituted Nd-Ce-Fe-B hot-deformed magnets by optimizing the hot-pressing process. This study investigates the microstructure and properties following hot deformation of Ce-substituted Nd-Ce-Fe-B magnets fabricated at a constant temperature and

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Mushnikov, A. N., A. M. Povolotskaya, S. M. Zadvorkin, L. S. Goruleva, and E. A. Putilova. "Effect of elastic-plastic deformation by biaxial tension on the magnetic characteristics of the nickel." Дефектоскопия, no. 11 (December 15, 2023): 3–16. http://dx.doi.org/10.31857/s0130308223110015.

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The studies were carried out in a test facility based on the original biaxial testing machine created at the IES UB RAS, designed to determine the physical properties of materials during elastic-plastic deformation independently along two axes. Finite element modeling of the stress-strain state of a cruciform nickel specimen has shown that, under symmetric biaxial tension, equivalent von Mises stresses are uniformly distributed in the central part. The results of microstructural studies indicate that dynamic recrystallization takes place in the material during biaxial deformation at room tempe

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13

Shen, Qian, Yi Long Ma, Xue Guo Yin, and Tao Zhou. "Preparation of Anisotropic Nd-Lean Nd-Fe-B Magnets with Improved Coercivity." Materials Science Forum 898 (June 2017): 1675–80. http://dx.doi.org/10.4028/www.scientific.net/msf.898.1675.

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Anisotropic bulk nanocrystal Nd-lean Nd-Fe-B magnets were prepared by hot-pressing the mixture of Nd11.5Fe81.5Nb1B6 melt-spun ribbons and pure Zn powder and subsequent hot-deforming. The effects of deformation on the magnetic properties and microstructure were also studied. The magnetic properties increased significantly for hot-deformed (HD) samples due to the formation of good c-axis texture with increasing deformation. The remanence Mr and maximal energy product (BH)m increased and reached their maximal values at 65% deformation due to the increasing orientation. On the other hand, the grai

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14

Stückler, Martin, Stefan Wurster, Markus Alfreider, Michael Zawodzki, Heinz Krenn, and Andrea Bachmaier. "Magnetic Properties of a High-Pressure Torsion Deformed Co-Zr Alloy." Nanomaterials 13, no. 16 (2023): 2280. http://dx.doi.org/10.3390/nano13162280.

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Co-Zr amorphous alloys exhibit soft magnetic properties, whereas the Co-rich crystalline magnetic phases in this alloy system displayed a hard magnetic behavior. In this study, an initial two-phase Co-Zr composite with an overall composition of 75 at.% Co and 25 at.% Zr was processed by high-pressure torsion (HPT), and the effects of severe plastic deformation and subsequent thermal treatment on the composite’s structural evolution and its magnetic properties were investigated. HPT processing allowed us to achieve an amorphous microstructure with low coercivity in its as-deformed state. To fur

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Stepanov, G. V., and P. A. Storozhenko. "Elastic properties of a magnetic elastomer." Izvestiâ Akademii nauk SSSR. Seriâ fizičeskaâ 88, no. 4 (2024): 660–67. http://dx.doi.org/10.31857/s0367676524040197.

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Magnetoactive (aka magnetorheological) elastomer is a composite material consisting of an elastic matrix and magnetic filling substance. A study dedicated to the relationship between its viscoelastic parameters and the strength of the external magnetic field has been done. Under the influence of a field, the material can demonstrate elasticity and viscosity increased by ten folds. The elastic properties of the composite remaining under those conditions heavily depend on the degree of deformation of the sample. Thus, this type of magnetic composite is a prospective material for being used as th

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16

Cheng, Chin-Hsiang, Minh-Tien Nguyen, Tzong-Shyng Leu та ін. "Magnetic and Mechanical Properties of Deformed Iron Nitrideγ′-Fe4N". Journal of Applied Mathematics 2015 (2015): 1–9. http://dx.doi.org/10.1155/2015/238730.

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The present study is aimed at magnetic and mechanical properties of iron nitride (γ′-Fe4N) with elastic deformation. Electronic structure and thermal properties of the iron nitride are also studied to have a comprehensive understanding of the characteristics ofγ′-Fe4N. This study is focused on the variation of the magnetic and the mechanical properties of iron nitride with a change in crystal size represented by lattice constant. As the lattice constant is altered with deformation, magnetic moment of Fe-II atoms is appreciably elevated, while that of Fe-I atoms is nearly unchanged. Dependence

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17

Glezer, A. M., M. P. Plotnikova, A. V. Shalimova, and N. S. Perov. "Severe plastic deformation of amorphous alloys: II. Magnetic properties." Bulletin of the Russian Academy of Sciences: Physics 73, no. 9 (2009): 1240–44. http://dx.doi.org/10.3103/s1062873809090135.

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18

Papadopoulou, S. "Correlation of magnetic properties with deformation in electrical steels." IOP Conference Series: Materials Science and Engineering 108 (March 18, 2016): 012015. http://dx.doi.org/10.1088/1757-899x/108/1/012015.

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19

Gorshenkov, M. V., D. Y. Karpenkov, R. V. Sundeev, V. V. Cheverikin, and I. V. Shchetinin. "Magnetic properties of Mn-Al alloy after HPT deformation." Materials Letters 272 (August 2020): 127864. http://dx.doi.org/10.1016/j.matlet.2020.127864.

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20

Oršulová, Tatiana, Peter Palček, and Jozef Kúdelčík. "Changes of the Magnetic Properties during Heat Treatment in AISI 304." Periodica Polytechnica Transportation Engineering 47, no. 4 (2018): 290–94. http://dx.doi.org/10.3311/pptr.12102.

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The aim of this study was to evaluate changes of the magnetic properties during heat treatment in austenitic stainless steel AISI 304. Investigated changes were caused by plastic deformation in material. Specific composition of alloying elements in austenitic stainless steels has got influence on their deformation behavior. Samples were heat treated before measurement of magnetic properties in different intervals of temperatures. The first series of measurements has shown, that it is necessary to make more precise analysis of temperature intervals in the second part of experiment. For verifica

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21

Nishihara, Tadashi. "Measurement of Deformation-Induced Martensite in Stainless Steel Using Magnetic Contact Force." Materials Science Forum 706-709 (January 2012): 2217–21. http://dx.doi.org/10.4028/www.scientific.net/msf.706-709.2217.

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Metastable austenitic stainless steels are attractive industrial materials with excellent corrosion resistance, mechanical properties, and formability. However, during plastic deformation, α’martensite can be formed. The volume fraction of that particular phase influences the mechanical and other properties (such as corrosion resistance) of these steels. Therefore, it is important to determine the amount of α’martensite in the obtained microstructures. Currently, the volume fraction of deformation-induced martensite in stainless steel is most commonly measured by the X-ray diffraction or magne

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22

Belim, Sergey V. "Investigation of Phase Transitions in Ferromagnetic Nanofilms on a Non-Magnetic Substrate by Computer Simulation." Materials 15, no. 7 (2022): 2390. http://dx.doi.org/10.3390/ma15072390.

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Magnetic properties of ferromagnetic nanofilms on non-magnetic substrate are examined by computer simulation. The substrate influence is modeled using the two-dimensional Frenkel-Kontorova potential. The film has a cubic crystal lattice. Cases of different ratio for substrate period and ferromagnetic film period are considered. The difference in film and substrate periods results in film deformations. These deformations result in a change in the magnetic properties of the film. The Ising model and the Metropolis algorithm are used for the study of magnetic properties. The dependence of Curie t

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23

Jumril, Yunas, Mohd Said Muzalifah, Yeop Majlis Burhanuddin, and Badariah Bais. "Finite Element Analysis and Preliminary Fabrication of Flexible Membrane with Embedded Magnetic Nanoparticles." Advanced Materials Research 1024 (August 2014): 147–50. http://dx.doi.org/10.4028/www.scientific.net/amr.1024.147.

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In this study, mechanical characteristic of flexible polymer membrane embedded with nanomagnetic particles is analyzed using COMSOL Multiphysics 4.3. The mechanical properties of the membrane is studied by considering the magnetic particles as matrix structures embedded inside the polymer. The target of this work is to realize a new type of magnetic actuator that is able to generate a strong magnetic field and has large mechanical deformation capability as well. On the other hand, the flexible membrane properties should be optically paternable and display very high magnetic sensitivity. Theref

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24

Minaev, Andrey, Juri Korovkin, Hammat Valiev, G. V. Stepanov, and Dmitry Yu Borin. "Studies of Magnetically Active Silicone Elastomers on a Vibrostend." Materials Science Forum 1037 (July 6, 2021): 141–47. http://dx.doi.org/10.4028/www.scientific.net/msf.1037.141.

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Experimental studies magnetorheological elastomer specimens dynamic properties under the magnetic fields action on the vibrostend are carried out. Amplitude-frequency characteristics have been obtained. The magnetic field effect on the silicone magnetoreactive elastomers deformation properties and damping coefficients experimentally is established.

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25

Li, Chun Hong, Feng Li, Deng Ming Chen, et al. "Effects of Hot Pressing and Deforming on the Microstructure and Properties of NdFeB Magnets." Materials Science Forum 852 (April 2016): 194–98. http://dx.doi.org/10.4028/www.scientific.net/msf.852.194.

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In this paper, the NdFeB magnets were prepared by hot pressing and deforming, the influence of pressing temperature, pressing strain, deforming temperature, deforming rate and amount on the density, hardness and magnetic properties of magnets were analyzed with the microstructure analysis. The results show that the density of the magnets and the hardness increase with the increase of the hot pressing temperature and pressure, but the hardness decreases when the pressing temperature reaches 800°C.After thermal deformation, the gap of the magnets reduced, the density is increased, the hardness b

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Chen, Yen Ju, Chao Cheng Chang, Po Jen Hsiao, and Can Xun Chang. "Investigation on the Improvement of Magnetic Properties by Hot Deformation Processes for NdFeB Magnets." Key Engineering Materials 626 (August 2014): 317–22. http://dx.doi.org/10.4028/www.scientific.net/kem.626.317.

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Traditionally, NdFeB magnets with high remanent flux density or high energy product could only be manufactured through altering the material compounds. In recent years, studies indicated that the magnet properties of NdFeB magnets could be improved through plastic deformation. These studies pointed out that the degree of plastic deformation is a key factor to improve magnetic properties. However, there are still many other process parameters that could affect the magnetic properties either positively or negatively. In this paper, process parameters such as strain, strain rate, and temperature

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Belozerov, E. V., N. N. Shchegoleva, G. V. Ivanova, and N. V. Mushnikov. "Features of the Post-Deformation Hardening of Fe-Cr-Co Hard Magnetic Alloys with W and Ga Additives." Solid State Phenomena 152-153 (April 2009): 54–57. http://dx.doi.org/10.4028/www.scientific.net/ssp.152-153.54.

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The structure, mechanical and magnetic properties have been studied for Fe-Cr-Co-based hard magnetic alloys with W and Ga additives, subjected by the quenching and post-deformation hardening. The alloys combine the properties of the hard magnetic material with outstanding mechanical strength and plasticity. Using X-ray and electron microscopy analysis, the reasons and conditions of formation of these properties have been determined.

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28

Ikram, Awais, Muhammad Awais, Richard Sheridan, et al. "Spark Plasma Sintering as an Effective Texturing Tool for Reprocessing Recycled HDDR Nd-Fe-B Magnets with Lossless Coercivity." Metals 10, no. 3 (2020): 418. http://dx.doi.org/10.3390/met10030418.

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The low-pressure hot-deformation methodology was applied to reprocess the nanocrystalline hydrogenation–disproportionation–desorption–recombination (HDDR) Nd-Fe-B powders from end-of-life (EOL) permanent magnets’ waste to determine the mechanism of texture development and the resultant improvement in remanence (and BHmax) in the recycled material. Both the hot-pressed and hot-deformed magnets produced via spark plasma sintering (SPS) were compared in terms of their magnetic properties with respect to forging pressures. Also, a comparison was established with the microstructure to cite the effe

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29

Nikitin, S. A., A. I. Smarzhevskaya, T. P. Kaminskaya, et al. "The Effect of Structural State on Magnetic and Magnetocaloric Properties of Micro-and Nanocrystalline Gd." Solid State Phenomena 190 (June 2012): 315–18. http://dx.doi.org/10.4028/www.scientific.net/ssp.190.315.

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The effect of micro-and nanocrystalline structural state on magnetic properties and magnetic entropy (ΔSM) of Gd is investigated. The marked influence of severe plastic deformation on ΔSM is demonstrated.

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30

Gong, Jiaxin, Jiheng Li, Xiaoqian Bao, and Xuexu Gao. "Lattice Deformation of Tb0.29Dy0.71Fe1.95 Alloy during Magnetization." Micromachines 14, no. 10 (2023): 1861. http://dx.doi.org/10.3390/mi14101861.

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In Tb-Dy-Fe alloy systems, Tb0.29Dy0.71Fe1.95 alloy shows giant magnetostrictive properties under low magnetic fields, thus having great potential for transducer and sensor applications. In this work, the lattice parameters of Tb0.29Dy0.71Fe1.95 compounds as a function of a magnetic field were investigated using in situ X-ray diffraction under an applied magnetic field. The results showed that the c-axis elongation of the rhombohedral unit cell was the dominant contributor to magnetostriction at a low magnetic field (0–500 Oe). As the magnetic field intensity increased from 500 Oe to 1500 Oe,

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31

Vorhauer, A., K. Rumpf, P. Granitzer, Siegfried Kleber, H. Krenn, and Reinhard Pippan. "Magnetic Properties and Microstructure of a FeCo Ferritic Steel after Severe Plastic Deformation." Materials Science Forum 503-504 (January 2006): 299–304. http://dx.doi.org/10.4028/www.scientific.net/msf.503-504.299.

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A commercial FeCo ferritic steel with an initial grain size of 10 μm was subjected to Severe Plastic Deformation in a temperature range between 293 K (0.16Tm, Tm: melting temperature in K) and 723 K (0.4Tm) up to strain levels where a saturation of the microstructural refinement is observed. The microstructure of the severely deformed state is analyzed by Back Scattered Electrons micrographs captured in a SEM. The magnetic properties were characterized by means of SQUID-magnetometer providing information about the magnetization behavior of the material in the as processed state. Depending on t

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32

Kryucheva, K. D., E. A. Putilova, S. M. Zadvorkin, L. S. Goruleva, and R. A. Savrai. "Stady of the structure, hardness and magnetic characteristics of austenitic steel 04Kh17N8T with varying surface hardening modes." Industrial laboratory. Diagnostics of materials 91, no. 3 (2025): 42–47. https://doi.org/10.26896/1028-6861-2025-91-3-42-47.

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Surface plastic deformation is widely used in various branches of mechanical engineering to improve the operational properties of materials. The paper presents the results of the study of the influence of surface plastic deformation modes on the structure, microhardness and magnetic characteristics of austenitic steel 04Kh17N8T. The experiments included changing the parameter of surface plastic deformation — normal load on the indenter. Using microstructural analysis, including optical and electron microscopy, changes in the crystalline structure of the material after deformation were analyzed

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Riveiro, J. M., and R. Pareja. "ELECTRICAL AND MAGNETIC PROPERTIES OF METALLIC GLASSES DURING TENSILE DEFORMATION." Le Journal de Physique Colloques 49, no. C8 (1988): C8–1331—C8–1332. http://dx.doi.org/10.1051/jphyscol:19888608.

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Ivanova, A. I., A. Yu Karpenkov, E. M. Semenova, I. I. Musabirov, and A. D. Vasiliev. "Effect of Deformation on the Magnetic Properties of Heusler Alloys." Bulletin of the Russian Academy of Sciences: Physics 88, no. 5 (2024): 798–801. http://dx.doi.org/10.1134/s1062873824706627.

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35

Lipiec, Wojciech. "The Influence of Powder Particle Size on Behavior of Hot Plastic Deformation, Structure and Magnetic Properties of Nd-Fe-B Die-Upset Magnets." Solid State Phenomena 190 (June 2012): 196–99. http://dx.doi.org/10.4028/www.scientific.net/ssp.190.196.

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The influence of powder particle size on behaviour of hot plastic deformation, structure and magnetic properties of Nd–Fe–B die-upset magnets have been examined. It was found, that powder particle size strongly affected plastic properties of material during hot deformation process. Precursors made of powder with the smallest particles (d < 32 μm) shown bigger plastic resistance than those made of powder with the larger ones (32 – 88 or 88 – 350 μm). For the same pressing force and temperature, applied within hot plastic deformation process, precursors made of the smallest particle powder al

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36

Sun, Bohua. "Deformation, Vibration, Buckling of Continuum Nanotorus." Journal of Nanomaterials 2010 (2010): 1–6. http://dx.doi.org/10.1155/2010/480628.

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A nanotorus is theoretically described as carbon nanotube bent into a torus (doughnut shape). Nanotori are predicted to have many unique properties, such as magnetic moments 1000 times larger than previously expected for certain specific radii. Its properties vary widely depending on radius of the torus and radius of the tube. Here, we developed a continuum model of nanotorus and obtained a closed form solutions for nanotorus deformation, vibration, and buckling and embedded in an elastic medium. The nanotorus is considered as a continuum model.

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Ma, Yi Long, Qian Shen, An Ruo Zhou, Jian Chun Sun, Chun Hong Li, and Deng Ming Chen. "Study on the Magnetic Properties and Microstructure of Single-Stage Hot-Deformed Nd-Fe-B Magnets." Materials Science Forum 815 (March 2015): 281–86. http://dx.doi.org/10.4028/www.scientific.net/msf.815.281.

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The Nd-Fe-B powder was prepared to bulk by cold pressing, and then was hot-deformed by the vacuum hot-pressing machine. Effects of hot-deformation temperature and rate on the density, anisotropy, performance and microstructure were studied. The results showed that the grain size was small, but the density and orientation degree was low, thus leading to poor performance when the deformation temperature was too low or deformation rate was too large. When the temperature was higher than 750 °C or the rate was lower than 0.1mm/s, the anisotropic magnets with good density and texture could be obtai

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Piotrowski, Leszek, Marek Chmielewski, and Zbigniew Kowalewski. "On the application of magnetoelastic properties measurements for plastic level determination in martensitic steels." Journal of Electrical Engineering 69, no. 6 (2018): 502–6. http://dx.doi.org/10.2478/jee-2018-0086.

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Abstract The change in the dislocation density, induced by plastic deformation, influences strongly the magnetic domain structure inside the material. Being so, classic parameters, like the coercivity or magnetic permeability, can be a good measure of the deformation level, yet their reliable determination in a non-destructive way in industrial environment is problematic. The magnetoacoustic emission (MAE) which results from the non-180° domain walls (DW) movement in materials with non-zero magnetostriction can be used as an alternative. The intensity of the MAE signal changes strongly as a re

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Glezer, Alex M., Margarita R. Plotnikova, Sergey V. Dobatkin, Nikolai S. Perov, and Anna V. Shalimova. "Effect of the High Pressure Torsion on Magnetic Properties of Amorphous Alloys." Materials Science Forum 667-669 (December 2010): 1077–82. http://dx.doi.org/10.4028/www.scientific.net/msf.667-669.1077.

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The effect of severe plastic deformation in Bridgman’s chamber on magnetic properties of the amorphous alloys of metal-metalloid type Ni44Fe29Co15Si2B10, Fe50Ni33B17, Fe70Cr15B15 obtained by the melt quenching was studied. The substantial alteration of saturation magnetization depending on the number of ferromagnetic and antiferromagnetic components in the alloy was revealed. It was supposed that the internal separation into nanoscaled areas enriched and depleted by ferromagnetic components took place in the amorphous matrix under the action of severe plastic deformation.

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Kveglis, Liudmila I., Riza B. Abylkalykova, Alexey V. Djes, Michail N. Volochaev, Alexander G. Cherkov, and Michail V. Gorev. "Lorentz's Electron Microscopy of Thin Films with Frustrated Magnetic Structure." Solid State Phenomena 215 (April 2014): 448–53. http://dx.doi.org/10.4028/www.scientific.net/ssp.215.448.

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The unique electrical and magnetic properties Fe86Mn13C alloy (Hadfield's steel) are due to special modulated structure. The alloy is widely used in mechanical engineering. Complex studies of the structure and properties of the alloy both in bulk samples and thin-films are suggested to describe the formation of a deformation martensite structure in Fe86Mn13C alloy in the form of self-assembled clusters. It is shown that combinations of anti-ferromagnetic austenite and ferrimagnetic martensite of deformation create unique electric and magnetic properties of Fe86Mn13C alloy both in bulk and in a

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Korneva, A., M. Bieda-Niemiec, G. Korznikova, A. Korznikov, and Krzystof Sztwiertnia. "Gradient Microstructure of FeCr30Co8 Hard Magnetic Alloy Subjected to Plastic Deformation by Complex Loading." Materials Science Forum 702-703 (December 2011): 344–47. http://dx.doi.org/10.4028/www.scientific.net/msf.702-703.344.

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Magnetically hard Fe-Cr-Co-based alloys are distinguished by their good ductility, excellent magnetic properties and low cost. Their superior magnetic properties are obtained by magnetic treatment and multistage tempering, which results in spinodal decomposition of the solid solution into the isomorphous α1 and α2 phases. However, the α1+α2 microstructure causes a reduction in the plasticity and strength of the material. It can often be advantageous for permanent magnets to maintain fine magnetic properties throughout their volume along while retaining good mechanical properties only in the su

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Gordienko, Valeriy. "Magnetic control of structural changes in structural steels during plastic deformation." E3S Web of Conferences 164 (2020): 08023. http://dx.doi.org/10.1051/e3sconf/202016408023.

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The analysis and consideration of the influence of the main factors on the damage of welded metal structures during long-term operation. The relationship between the strength of the magnetic field of the Hр scattering and structural changes in structural steels that occur during cold plastic deformation to different degrees is established. It is shown that at small degrees of deformation, the change in the magnetic parameter Hр is large. As they increase, the HP value decreases and tends to the values of the Earth's magnetic field. The data of microstructural analysis of the metal of structura

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Kaleta, Jerzy, Daniel Lewandowski, and Piotr Zając. "Experimental Identification of Magnetorheological Composites and Elastomers Properties." Materials Science Forum 482 (April 2005): 403–6. http://dx.doi.org/10.4028/www.scientific.net/msf.482.403.

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The paper presents measurement and results of mathematical modelling of damping in cyclic loaded magnetorheological composites - MRC. The original experimental set-up for cyclic shearing mode has been created. Examples of possible applications, measurement and processing mechanical signals (shear stress - T, deformation - g) and magnetic signals (strength of magnetic field - H) were provided. For the modelling four-parameters viscoelastic-viscoplastic model was chosen. Result of identification confirmed an appropriate choice of the model.

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López-Granados, Nancy Margarita, Emmanuel José Gutiérrez-Castañeda, and Armando Salinas-Rodríguez. "Effect of Cold Rolling Prior to Annealing on the Grain Size-Energy Losses Relationship in a Low Carbon Grain Non-Oriented Semi-Processed Electrical Steel." Metals 12, no. 7 (2022): 1211. http://dx.doi.org/10.3390/met12071211.

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In this work, the effect of cold deformation prior to annealing treatment on the microstructure and magnetic hysteresis energy losses in a low carbon grain non-oriented semi-processed electrical steel with 0.60 mm thickness was investigated. The samples were subjected to different percentages of deformation, in a range of 5–20% reduction and annealed at temperatures between 650 and 950 °C for 60 min, these were characterized by Optical Microscopy. Meanwhile the energy losses were calculated from the magnetic hysteresis loops using a Vibrating Sample Magnetometer. The experimental results showe

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А. Zhakupov. "APPLICATION FEATURES OF STEEL PRODUCTS NON-DESTRUCTIVE TESTING." Science and Technology of Kazakhstan, no. 4.2024 (December 30, 2024): 263–69. https://doi.org/10.48081/dlrf5238.

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This article presents the research results of the changes dependence in the magnetic properties of 25CrMoV steel on the degree of products stress-strain state. This phenomenon of influence allows non-destructive detection of the steel products loading degree by determining magnetic characteristics such as coercive force and residual magnetic induction. These parameters are the main indicators of intensity and magnetization for the hysteresis loop of steels. Changes in magnetic characteristics during plastic deformation are due to the formation of the martensite phase. The effect of deformation

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Paulischin, Alexander, Stefan Wurster, Heinz Krenn, and Andrea Bachmaier. "Magnetostrictive Behavior of Severe Plastically Deformed Nanocrystalline Fe-Cu Materials." Metals 14, no. 10 (2024): 1157. http://dx.doi.org/10.3390/met14101157.

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Reducing the saturation magnetostriction is an effective way to improve the performance of soft magnetic materials and reduce core losses in present and future applications. The magnetostrictive properties of binary Fe-based alloys are investigated for a broad variety of alloying elements. Although several studies on the influence of Cu-alloying on the magnetic properties of Fe are reported, few studies have focused on the effect on its magnetostrictive behavior. High pressure torsion deformation is a promising fabrication route to produce metastable, single-phase Fe-Cu alloys. In this study,

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Oh, Juhee, Sujung Son, Hyoung Seop Kim, Jae Bok Seol, Hyokyung Sung, and Jung Gi Kim. "Mechanical Properties and Microstructural Evolutions of High-Pressure Torsion-Processed Al7068 Alloy." Korean Journal of Metals and Materials 61, no. 1 (2023): 1–8. http://dx.doi.org/10.3365/kjmm.2023.61.1.1.

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The combination of severe plastic deformation, deformational heat, and frictional heat generated during the high-pressure torsion process has a great effect on microstructural evolutions, including grain refinement, dynamic recrystallization and recovery. In particular, the low melting temperature metallic alloys (e.g., aluminum and magnesium) also induce nano-precipitations in the matrix during high-pressure torsion, which results in both unique microstructure and mechanical properties of the nanocrystalline metallic materials. In this study, the mechanical properties and microstructural evol

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Singh, Deepak, Kati Mökkönen, Jarmo Poutala, Paavo Rasilo, Anouar Belahcen, and Reijo Kouhia. "Preliminary results on the effect of plastic deformation on magnetic properties." Rakenteiden Mekaniikka 50, no. 3 (2017): 372–75. http://dx.doi.org/10.23998/rm.65180.

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Golinelli, Nicola, Andrea Spaggiari, and Eugenio Dragoni. "Mechanical behaviour of magnetic Silly Putty: Viscoelastic and magnetorheological properties." Journal of Intelligent Material Systems and Structures 28, no. 8 (2015): 953–60. http://dx.doi.org/10.1177/1045389x15591655.

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In this work the mechanical and viscoelastic properties of magnetic Silly Putty are investigated. Silly Putty is a non-Newtonian material whose response depends on the rate at which it is deformed. For a rapid deformation, it behaves as an elastic solid, while over a relatively long time scale, the polymer molecules can be untangled and it flows as a fluid. The purpose of this article is to study the behaviour of this material firstly under a quasi-static compression and shear loading, and secondly under dynamic shear loading. The Silly Putty under study has a volume fraction of ferromagnetic

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BÖSE, HOLGER. "VISCOELASTIC PROPERTIES OF SILICONE-BASED MAGNETORHEOLOGICAL ELASTOMERS." International Journal of Modern Physics B 21, no. 28n29 (2007): 4790–97. http://dx.doi.org/10.1142/s0217979207045670.

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Magnetorheological (MR) elastomers are composite materials consisting of magnetic particles in elastomer matrices, whose mechanical properties can be influenced by applying a magnetic field. Main parameters which determine the behavior of these smart materials are the concentration of the magnetic particles and the mechanical stiffness of the elastomer matrix. The viscoelastic properties of silicone-based MR elastomers are outlined in terms of their storage and loss moduli. The mechanical behavior of the material is also influenced by a magnetic field during the curing of the elastomer matrix,

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