The effect of magnetic annealing on crystallographic texture and magnetic properties of Fe-2.6% Si

Salih, M.Z.; Uhlarz, M.; Pyczak, Florian; Brokmeier, Heinz Günter; Weidenfeller, B.; Al-Hamdany, Nowfal; Gan, Weimin; Zhong, Z.Y.; Schell, Norbert

doi:10.1016/j.jmmm.2015.01.004

Cited by 11 publications

(5 citation statements)

References 32 publications

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“…Значительный вклад может внести, например, проведение отжига в сильном магнитном поле. Как показано, например, в [18,19]…”

Section: заключениеunclassified

Texture formation under rolling and primary recrystallization in Fe86Ga14 alloy

Gervasyeva¹,

Milyutin²

2018

LoM

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Fe-Ga alloys possess the increased magnetostriction in comparison with the traditional magnetostrictive materials Fe-Co and Fe-Al and have a number of advantages over magnetostrictive materials based of rare earths elements. In literature, much attention is paid to composition Fe 81 Ga 19 , as this alloy possesses the greatest magnetostriction in one-phase area. Important condition for attainment of the best functional properties in this material is creation of certain crystallographic texture. However, the substantial difficulty at manufacture of samples and wares consists in a high brittleness of alloy at such content of gallium, for this reason the features of formation of crystallographic texture at deformation and recrystallization in this alloy are studied poorly. In this work, the attempt to study influence of various modes of rolling and annealing on structure and magnetic properties of Fe-Ga alloy with the smaller content of Ga is made. The structure and texture of primary recrystallization were studied by means of an electron back-scattering diffraction, besides field dependences of magnetization were measured. The amount of grains with the direction of easy magnetization in different samples was estimated by the value of magnetic induction at a defined value of magnetic field on a magnetization curve. The values of magnetostriction increased with increase of volume fraction of the components including the direction of easy magnetization of iron-gallium alloy. Absolute values of magnetostriction did not exceed 50 ppm that is at the level of values for traditional materials, but lower than for Fe 81 Ga 19. Plastic deformation by hot and, especially cold rolling causes great difficulties in connection with a high brittleness of alloy even with the lower value of gallium concentration. Therefore, it is necessary to find new methods of a plastic deformation of alloy or to add the chemical elements improving plastic properties of material.

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Section: заключениеunclassified

Texture formation under rolling and primary recrystallization in Fe86Ga14 alloy

Gervasyeva¹,

Milyutin²

2018

LoM

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“…В работах [32,33] было показано, что магнитное поле может влиять не только на фазообразование, но и на структурные превращения, в частности, на рекристаллизацию холоднодеформированных металлических материалов. Такое влияние проявляется в изменении скорости протекания процессов рекристаллизации [33], а также в изменении микроструктуры и кристаллографической текстуры [34], подвергнутых магнитному отжигу образцов. В настоящий момент в научной литературе насчитывается не так много работ по исследованию структурных превращений в условиях наличия внешнего магнитного поля.…”

Section: структурные превращения в условиях магнитного поляunclassified

“…Предполагается, что магнитное поле ускоряет рост зерен в этих условиях. В более поздней работе [34] авторы обнаружили, что в образцах из сплава Fe -2,6 % Si после отжига в магнитном поле 7 и 14 Тл усиливается текстурная компонента (<100> || RD), а так же улучшаются магнитные свойства.…”

Section: структурные превращения в условиях магнитного поляunclassified

Effect of high magnetic field on phase and structural transformations in ferromagnetic alloys. Review

Milyutin¹,

Gervasyeva²

2018

LoM

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Review of relevant research about the effect of high DC magnetic field on structural and phase transformations in different ferromagnetic alloys are presented. Main experimental results of simultaneous impact high temperature and magnetic field with induction up to 45 T on alloys Fe-C, Fe-Co, Fe-Si, Mn-Bi, Fe-Ni, Ni-Co and other are presented. The main high magnetic field effect on a phase transformation is equilibrium temperature changing, which reaches tens degrees. Modern views about cause of such effect, which consist in changing of thermodynamic conditions of transformation under external magnetic field due different magnetic properties between parent and appearing phase are described. In the theoretical and experimental determination of the phase transformation temperature shift magnitude in most cases there is a significant discrepancy. The probable causes such discrepancy are discussed. Moreover, review of results on investigations effect of magnetic field on structure transformations; in particular recovery and recrystallization in cold-rolled ferromagnetic alloys are presented. It is shown, that magnetic field retards recovery process and furthermore promotes preferential formation of certain texture components. Nowadays there is no consensus in the scientific literature on the nature of the observed effects. In this paper, critical analyses of the approaches proposed by different authors to the interpretation of experimental results are presented. The current state of the problem is described; in conclusion, the prospects for further studies of thermally activated processes in the conditions of application of a high DC magnetic field are indicated.

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“…Several recent papers have demonstrated that high magnetic fields applied during thermal processing can affect the grain boundary mobility and the crystallographic texture development in FeSi electro-technical steels [7][8][9]. However, the observed structural changes were not particularly prominent.…”

Section: Introductionmentioning

confidence: 98%

Influence of Thermal Processing in High Magnetic Field on Soft Magnetic Properties and Crystallographic Texture of Non-Oriented Fe-Si Steels

et al. 2017

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In this work, we report on the effects of high static magnetic field on the formation of desirable crystallographic orientation of grains ("rotating" cube) during the primary recrystallization of non-oriented steels. Vacuum degassed non-oriented steel with the silicon content about 1 wt% was taken from industrial line after final cold rolling with 80% of deformation and then it was subjected to the laboratory annealing at temperature of primary recrystallization. Whole annealing process was carried with and without the applied external magnetic field of 14 T. The analysis of crystallographic orientation of experimental material was studied by electron backscattered diffraction technique. The microstructural and textural observations have shown a small difference in average grain size between samples annealed with and without magnetic field as well as increase of the "rotating" Cube component and decrease of the intensity of deformation texture by application of magnetic field. The magnetic measurements show that the coercivity value of the sample annealed in the magnetic field of 14 T can be reduced by approximately 3% in comparison with sample annealed under the zero field conditions.

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The effect of magnetic annealing on crystallographic texture and magnetic properties of Fe-2.6% Si

Cited by 11 publications

References 32 publications

Texture formation under rolling and primary recrystallization in Fe86Ga14 alloy

Texture formation under rolling and primary recrystallization in Fe86Ga14 alloy

Effect of high magnetic field on phase and structural transformations in ferromagnetic alloys. Review

Influence of Thermal Processing in High Magnetic Field on Soft Magnetic Properties and Crystallographic Texture of Non-Oriented Fe-Si Steels

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