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Jianxin Xie - One of the best experts on this subject based on the ideXlab platform.
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the effects of Recrystallization Texture and grain size on magnetic properties of 6 5 wt si electrical steel
Journal of Magnetism and Magnetic Materials, 2016Co-Authors: Hongjiang Pan, Zhihao Zhang, Jianxin XieAbstract:Abstract Cold rolled sheets of high silicon electrical steel (Fe-6.5 wt% Si alloy) with thicknesses of 0.2–0.4 mm were fabricated by directional solidification and rolling, and the microstructure, Texture and magnetic properties of the sheets annealed at 700–1300 °C for 1 h were investigated. The roles of Recrystallization Texture and grain size in influencing the magnetic induction and core loss were clarified. All the samples had strong {100} Recrystallization Texture with volume fraction of 18.3–47.3% and exhibited high magnetic induction and low core loss. For the samples with a thickness of 0.2 mm after annealing at 800–1200 °C, the magnetic induction B8 and the core loss P10/50 reached 1.273–1.378 T and 0.49–0.84 W/kg, respectively. The grain size played a much more important role in the core loss than Recrystallization Texture. The average grain size to seek minimum core loss P10/50 was 536–615 μm in the high silicon electrical steel sheets with thicknesses of 0.2–0.4 mm, which was larger than 100–200 μm for the electrical steel with common silicon content. The magnetic induction B8 of the samples improved with an enhancement of {100} Recrystallization Texture, but reduced with an increase of average grain size. The effect of Recrystallization Texture on the magnetic induction B8 was much greater than that of grain size.
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Preparation of High Silicon Electrical Steel Sheets with Strong {100} Recrystallization Texture by the Texture Inheritance of Initial Columnar Grains
Metallurgical and Materials Transactions A, 2016Co-Authors: Hongjiang Pan, Zhihao Zhang, Jianxin XieAbstract:Texture evolutions and Recrystallization Texture features in warm- and cold-rolled sheets of high silicon electrical steel with two different initial microstructures (columnar-grained and equiaxed-grained microstructures) were investigated. The relationships between the Recrystallization Textures and the initial Textures (the Textures before rolling) of the samples were analyzed. The results showed that after annealing at 1073 K (800 °C) for 1 hour, strong {100} Recrystallization Textures with volume fractions of more than 47 pct were obtained in the columnar-grained samples fabricated by warm and cold rolling along the growing direction of the columnar grains. While after rolling and annealing in the same processes, only 12.8 pct volume fractions of {100} Recrystallization Texture were revealed in the equiaxed-grained samples. The formation of strong {100} Recrystallization Texture in the annealed sheets of high silicon electrical steel with initial columnar grains was attributed to the favorable Texture inheritance of the initial Texture during rolling and annealing. The columnar grains of strong near {100}〈001〉 ({100}〈001〉 ~ {310}〈001〉) orientation in the samples before rolling were transferred into deformed grains with orientations such as {100}〈011〉 and {100}〈012〉. after rolling. Afterwards, these deformed grains were further transferred into {100} oriented recrystallized grains, which formed strong {100} Recrystallization Texture in the annealed sheets and exhibited preferable soft magnetic properties.
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preparation of high silicon electrical steel sheets with strong 100 Recrystallization Texture by the Texture inheritance of initial columnar grains
Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science, 2016Co-Authors: Hongjiang Pan, Zhihao Zhang, Jianxin XieAbstract:Texture evolutions and Recrystallization Texture features in warm- and cold-rolled sheets of high silicon electrical steel with two different initial microstructures (columnar-grained and equiaxed-grained microstructures) were investigated. The relationships between the Recrystallization Textures and the initial Textures (the Textures before rolling) of the samples were analyzed. The results showed that after annealing at 1073 K (800 °C) for 1 hour, strong {100} Recrystallization Textures with volume fractions of more than 47 pct were obtained in the columnar-grained samples fabricated by warm and cold rolling along the growing direction of the columnar grains. While after rolling and annealing in the same processes, only 12.8 pct volume fractions of {100} Recrystallization Texture were revealed in the equiaxed-grained samples. The formation of strong {100} Recrystallization Texture in the annealed sheets of high silicon electrical steel with initial columnar grains was attributed to the favorable Texture inheritance of the initial Texture during rolling and annealing. The columnar grains of strong near {100}〈001〉 ({100}〈001〉 ~ {310}〈001〉) orientation in the samples before rolling were transferred into deformed grains with orientations such as {100}〈011〉 and {100}〈012〉. after rolling. Afterwards, these deformed grains were further transferred into {100} oriented recrystallized grains, which formed strong {100} Recrystallization Texture in the annealed sheets and exhibited preferable soft magnetic properties.
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The effects of Recrystallization Texture and grain size on magnetic properties of 6.5 wt% Si electrical steel
Journal of Magnetism and Magnetic Materials, 2016Co-Authors: Hongjiang Pan, Zhihao Zhang, Jianxin XieAbstract:Abstract Cold rolled sheets of high silicon electrical steel (Fe-6.5 wt% Si alloy) with thicknesses of 0.2–0.4 mm were fabricated by directional solidification and rolling, and the microstructure, Texture and magnetic properties of the sheets annealed at 700–1300 °C for 1 h were investigated. The roles of Recrystallization Texture and grain size in influencing the magnetic induction and core loss were clarified. All the samples had strong {100} Recrystallization Texture with volume fraction of 18.3–47.3% and exhibited high magnetic induction and low core loss. For the samples with a thickness of 0.2 mm after annealing at 800–1200 °C, the magnetic induction B8 and the core loss P10/50 reached 1.273–1.378 T and 0.49–0.84 W/kg, respectively. The grain size played a much more important role in the core loss than Recrystallization Texture. The average grain size to seek minimum core loss P10/50 was 536–615 μm in the high silicon electrical steel sheets with thicknesses of 0.2–0.4 mm, which was larger than 100–200 μm for the electrical steel with common silicon content. The magnetic induction B8 of the samples improved with an enhancement of {100} Recrystallization Texture, but reduced with an increase of average grain size. The effect of Recrystallization Texture on the magnetic induction B8 was much greater than that of grain size.
Guodong Wang - One of the best experts on this subject based on the ideXlab platform.
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effect of the size and dispersion of precipitates formed in hot rolling on Recrystallization Texture in ferritic stainless steels
Journal of Materials Science, 2013Co-Authors: Fei Gao, Zhenyu Liu, Guodong WangAbstract:In the present paper, the size and dispersion of precipitates in ferritic stainless steels have been varied by applying different hot rolling processes, the effect of which on the evolution of Recrystallization Textures was investigated. The precipitate characterization was observed and studied by transmission electron microscopy and the Texture evolution processes were characterized by X-ray diffraction and electron backscattering diffraction. The results show that low temperature finish rolling can promote the formation of a large number of fine and dense TiC precipitates in hot band. These fine and dense precipitates can be inherited in the final sheet, and are beneficial to facilitating the nucleation of randomly oriented grains by promoting the formation of inhomogeneous cold rolled microstructure, strongly suppressing the growth of recrystallized grains by pinning grain boundary migration, thereby weakening the formation of γ-fiber Recrystallization Texture and deteriorating the formability of final sheet. By contrast, strong γ-fiber Recrystallization Texture is developed in the sample with sparsely distributed coarse precipitates. Therefore, the size and dispersion of precipitates formed in hot rolling have significant effects on the nucleation of randomly oriented grains and the growth of recrystallized grains during Recrystallization annealing, which play important roles in controlling the γ-fiber Recrystallization Texture in ferritic stainless steels.
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development of λ fiber Recrystallization Texture and magnetic property in fe 6 5 wt si thin sheet produced by strip casting and warm rolling method
Materials Letters, 2013Co-Authors: Haitao Liu, Fei Gao, Zhenyu Liu, Yu Sun, Guodong WangAbstract:Abstract An 6.5 wt%Si–0.3 wt%Al non-oriented electrical steel as-cast sheet with strong columnar grains was produced by twin-roll strip casting process, and subsequently treated with hot rolling, warm rolling and annealing. It was shown that the warm rolled sheet was characterized by strong α-fiber ( ∥RD), quite weak γ-fiber ( ∥ND) Texture and inhomogeneous deformed microstructure. After annealing, desirable λ-fiber ( ∥ND) mainly including {001} ∼{001} components dominated the Recrystallization Texture while the γ-fiber had all but disappeared, thus the annealed sheet showed a very high magnetic induction. It was indicated that the development of λ-fiber Recrystallization Texture could be attributed to the preferred nucleation and grain growth under the applied processes. The present study provides a new efficient way to optimize the Recrystallization Texture and improve the magnetic induction of high-silicon non-oriented electrical steel sheet.
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Texture evolution and formability under different hot rolling conditions in ultra purified 17 cr ferritic stainless steels
Materials Characterization, 2013Co-Authors: Fei Gao, Zhenyu Liu, Haitao Liu, Guodong WangAbstract:Abstract A very non-uniform γ-fiber Recrystallization Texture usually takes place in ferritic stainless steels, which can deteriorate the formability of final sheets. In order to work out the way of improving the uniformity of γ-fiber Recrystallization Texture, conventional rolling and warm rolling processes have been carried out with an ultra purified ferritic stainless steel. Texture evolution under different hot rolling conditions was investigated by using macro and micro-Texture analyses. It was observed that a non-uniform γ-fiber Recrystallization Texture was obtained in the final sheet after conventional rolling process, while a nearly uniform γ-fiber Recrystallization Texture was formed in the final sheet after warm rolling process. Therefore, the formability of the final sheet was significantly improved after warm rolling process. It was indicated that the formation of non-uniform γ-fiber Recrystallization Texture was attributed to oriented nucleation, whereas the formation of uniform γ-fiber Recrystallization Texture was explained by a combination of oriented nucleation and preferred growth.
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formation of 001 Recrystallization Texture and magnetic property in strip casting non oriented electrical steel
Materials Letters, 2012Co-Authors: Haitao Liu, Zhenyu Liu, Yu Sun, Yiqing Qiu, Chenggang Li, Guangming Cao, Byungdeug Hong, Sanghoon Kim, Guodong WangAbstract:Abstract A 3.2 wt.%Si–0.7 wt.%Al non-oriented silicon steel as-cast sheet with developed columnar grains and λ-fiber ( ∥ ND) Texture was produced by twin-roll strip casting process, and subsequently treated with cold rolling and annealing. Texture evolution at each condition was investigated using macro-/microTexture analysis. It was shown that the cold rolled sheet was characterized by pronounced {001} ~{115} fiber and quite weak γ-fiber ( ∥ ND) Texture. After annealing, the Recrystallization Texture was dominated by desirable λ-fiber with a peak at {001} together with extremely weak γ-fiber, and consequently the magnetic induction was significantly improved. It was indicated that the formation of {001} Recrystallization Texture could be attributed to the preferred nucleation and grain growth by the strain-induced grain boundary migration (SIBM) mechanism.
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Recrystallization Texture Characteristic and Drawability of a Warm Rolled and Cold Rolled Interstitial-Free Steel
Journal of Materials Engineering and Performance, 2006Co-Authors: Zhaodong Wang, Guodong Wang, Yan-hui Guo, Xianghua Liu, Peng ZhangAbstract:The Recrystallization Textures and drawability in an interstitial-free (IF) steel were investigated as a function of cold rolling reduction. The hot bands for further cold rolling were obtained by lubricated hot rolling in the ferrite region. The orientation distribution function (ODF) was applied to analyze Recrystallization Textures. Texture analysis showed that hot bands rolled in the ferrite region had strong {111}//ND Texture component. The {111}//ND Recrystallization Texture of the cold rolled steel with 73% reduction displayed the highest intensity, but weakened as more cold work was introduced. The highestr-value was obtained at a cold reduction of 73% when the hot band was previously rolled in the ferrite region.
Hongjiang Pan - One of the best experts on this subject based on the ideXlab platform.
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Effects of grain boundary on {100} Recrystallization Texture of high silicon electrical steel
Metals and Materials International, 2018Co-Authors: Hongjiang Pan, Li Xiang, Shengtao QiuAbstract:In this study, high silicon electrical steel (Fe-6.5 wt% Si alloy) as-cast ingot with columnar grains was prepared by directional solidification. Additionally, equiaxed-grained samples with different initial grain sizes were fabricated by casting, rolling and annealing at different temperatures. The deformation band, dislocation morphology and Recrystallization Texture of these samples during subsequent rolling and annealing were investigated. The effects of initial grain boundary directions of columnar-grained samples and initial grain sizes (grain boundary densities) of equiaxed-grained samples on the {100} Recrystallization Texture of high silicon electrical steel were analyzed. The results showed that the grain boundaries played an important role in the formation of the {100} Recrystallization Texture. Due to a low dislocation density (low deformation stored energy) after rolling, the samples without grain boundaries parallel to transverse direction (e.g. rolling along the axis of the columnar grains) or with small grain boundary densities (e.g. large initial grain sizes) were favorable to the formation of a {100} Recrystallization Texture during annealing.
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the effects of Recrystallization Texture and grain size on magnetic properties of 6 5 wt si electrical steel
Journal of Magnetism and Magnetic Materials, 2016Co-Authors: Hongjiang Pan, Zhihao Zhang, Jianxin XieAbstract:Abstract Cold rolled sheets of high silicon electrical steel (Fe-6.5 wt% Si alloy) with thicknesses of 0.2–0.4 mm were fabricated by directional solidification and rolling, and the microstructure, Texture and magnetic properties of the sheets annealed at 700–1300 °C for 1 h were investigated. The roles of Recrystallization Texture and grain size in influencing the magnetic induction and core loss were clarified. All the samples had strong {100} Recrystallization Texture with volume fraction of 18.3–47.3% and exhibited high magnetic induction and low core loss. For the samples with a thickness of 0.2 mm after annealing at 800–1200 °C, the magnetic induction B8 and the core loss P10/50 reached 1.273–1.378 T and 0.49–0.84 W/kg, respectively. The grain size played a much more important role in the core loss than Recrystallization Texture. The average grain size to seek minimum core loss P10/50 was 536–615 μm in the high silicon electrical steel sheets with thicknesses of 0.2–0.4 mm, which was larger than 100–200 μm for the electrical steel with common silicon content. The magnetic induction B8 of the samples improved with an enhancement of {100} Recrystallization Texture, but reduced with an increase of average grain size. The effect of Recrystallization Texture on the magnetic induction B8 was much greater than that of grain size.
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Preparation of High Silicon Electrical Steel Sheets with Strong {100} Recrystallization Texture by the Texture Inheritance of Initial Columnar Grains
Metallurgical and Materials Transactions A, 2016Co-Authors: Hongjiang Pan, Zhihao Zhang, Jianxin XieAbstract:Texture evolutions and Recrystallization Texture features in warm- and cold-rolled sheets of high silicon electrical steel with two different initial microstructures (columnar-grained and equiaxed-grained microstructures) were investigated. The relationships between the Recrystallization Textures and the initial Textures (the Textures before rolling) of the samples were analyzed. The results showed that after annealing at 1073 K (800 °C) for 1 hour, strong {100} Recrystallization Textures with volume fractions of more than 47 pct were obtained in the columnar-grained samples fabricated by warm and cold rolling along the growing direction of the columnar grains. While after rolling and annealing in the same processes, only 12.8 pct volume fractions of {100} Recrystallization Texture were revealed in the equiaxed-grained samples. The formation of strong {100} Recrystallization Texture in the annealed sheets of high silicon electrical steel with initial columnar grains was attributed to the favorable Texture inheritance of the initial Texture during rolling and annealing. The columnar grains of strong near {100}〈001〉 ({100}〈001〉 ~ {310}〈001〉) orientation in the samples before rolling were transferred into deformed grains with orientations such as {100}〈011〉 and {100}〈012〉. after rolling. Afterwards, these deformed grains were further transferred into {100} oriented recrystallized grains, which formed strong {100} Recrystallization Texture in the annealed sheets and exhibited preferable soft magnetic properties.
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preparation of high silicon electrical steel sheets with strong 100 Recrystallization Texture by the Texture inheritance of initial columnar grains
Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science, 2016Co-Authors: Hongjiang Pan, Zhihao Zhang, Jianxin XieAbstract:Texture evolutions and Recrystallization Texture features in warm- and cold-rolled sheets of high silicon electrical steel with two different initial microstructures (columnar-grained and equiaxed-grained microstructures) were investigated. The relationships between the Recrystallization Textures and the initial Textures (the Textures before rolling) of the samples were analyzed. The results showed that after annealing at 1073 K (800 °C) for 1 hour, strong {100} Recrystallization Textures with volume fractions of more than 47 pct were obtained in the columnar-grained samples fabricated by warm and cold rolling along the growing direction of the columnar grains. While after rolling and annealing in the same processes, only 12.8 pct volume fractions of {100} Recrystallization Texture were revealed in the equiaxed-grained samples. The formation of strong {100} Recrystallization Texture in the annealed sheets of high silicon electrical steel with initial columnar grains was attributed to the favorable Texture inheritance of the initial Texture during rolling and annealing. The columnar grains of strong near {100}〈001〉 ({100}〈001〉 ~ {310}〈001〉) orientation in the samples before rolling were transferred into deformed grains with orientations such as {100}〈011〉 and {100}〈012〉. after rolling. Afterwards, these deformed grains were further transferred into {100} oriented recrystallized grains, which formed strong {100} Recrystallization Texture in the annealed sheets and exhibited preferable soft magnetic properties.
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The effects of Recrystallization Texture and grain size on magnetic properties of 6.5 wt% Si electrical steel
Journal of Magnetism and Magnetic Materials, 2016Co-Authors: Hongjiang Pan, Zhihao Zhang, Jianxin XieAbstract:Abstract Cold rolled sheets of high silicon electrical steel (Fe-6.5 wt% Si alloy) with thicknesses of 0.2–0.4 mm were fabricated by directional solidification and rolling, and the microstructure, Texture and magnetic properties of the sheets annealed at 700–1300 °C for 1 h were investigated. The roles of Recrystallization Texture and grain size in influencing the magnetic induction and core loss were clarified. All the samples had strong {100} Recrystallization Texture with volume fraction of 18.3–47.3% and exhibited high magnetic induction and low core loss. For the samples with a thickness of 0.2 mm after annealing at 800–1200 °C, the magnetic induction B8 and the core loss P10/50 reached 1.273–1.378 T and 0.49–0.84 W/kg, respectively. The grain size played a much more important role in the core loss than Recrystallization Texture. The average grain size to seek minimum core loss P10/50 was 536–615 μm in the high silicon electrical steel sheets with thicknesses of 0.2–0.4 mm, which was larger than 100–200 μm for the electrical steel with common silicon content. The magnetic induction B8 of the samples improved with an enhancement of {100} Recrystallization Texture, but reduced with an increase of average grain size. The effect of Recrystallization Texture on the magnetic induction B8 was much greater than that of grain size.
Liang Zuo - One of the best experts on this subject based on the ideXlab platform.
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Recrystallization Texture development in rare-earth (RE)-doped non-oriented silicon steel
Journal of Iron and Steel Research International, 2020Co-Authors: Yuhui Sha, Fang Zhang, Yongkuang Gao, Songtao Chang, Liang ZuoAbstract:High-grade non-oriented silicon steel with higher permeability and lower core loss has become the pursed target with the rapid development of electrical machines. The effects of rare-earth (RE) element on Recrystallization Texture in RE-doped Fe-3.1 wt.% Si-1.2 wt.% Al non-oriented silicon steel were investigated by macro- and micro-Texture analyses. Nonlinear variation of Recrystallization Texture with RE element content was observed. In the competition among main Recrystallization Texture components, favorable {113} and λ fiber ( //ND) are strengthened and unfavorable γ fiber is evidently decreased by the addition of RE element, whereas the effect of RE element is reversed by excess RE element. The Recrystallization Texture development is determined by RE-affected nucleation and grain growth in terms of grain boundary migration related to segregation and inclusion. The properly inhibited grain boundary mobility can promote favorable Recrystallization Texture by the improved nucleation and efficient grain growth.
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Recrystallization Texture Transition in Fe-2.1 Wt Pct Si Steel by Different Cold Rolling Reduction
Metallurgical and Materials Transactions A, 2015Co-Authors: Ning Shan, Fang Zhang, Yuhui Sha, Liu Jinlong, Liang ZuoAbstract:The competition dependent on cold rolling reduction among main Recrystallization Texture components in Fe-2.1 wt pct Si sheets was investigated from the hot band characterized by strong Cube ({001}〈100〉) at center layer and weak Goss ({110}〈001〉) at quarter layer. The deformation and Recrystallization Textures through thickness were both analyzed by X-ray diffraction technique. Goss, Cube, and {111}〈112〉 components dominate the Recrystallization Texture in sequence with the cold rolling reduction increasing from 60 to 90 pct. This Recrystallization Texture transition with cold rolling reduction can be explained in terms of the number and nature of nucleation sites for various Texture components. A variety of final Recrystallization Textures are proposed for non-oriented silicon steel by designing Texture and microstructure of hot band and cold rolling reduction.
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development of strong η fiber Recrystallization Texture in rolled fe81ga19 thin sheet
Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science, 2014Co-Authors: Yuhui Sha, Fang Zhang, Feifei Lin, Liang ZuoAbstract:The 0.50-mm-thick Fe81Ga19 sheets were produced by rolling procedure, and Texture evolution was investigated using macro- and microTexture analyses. The Recrystallization Texture dominated with strong η fiber (〈001〉//RD) was successfully obtained through sheet thickness by primary Recrystallization annealing. The η fiber development can be attributed to the advantage in both grain number and grain size derived from the specially applied rolling process.
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Primary Recrystallization Texture in Rolled (Fe81Ga19)99B1 Sheet
Advanced Materials Research, 2012Co-Authors: Di Yao Su, Fang Zhang, Yuhui Sha, Liang ZuoAbstract:The Recrystallization Texture in a rolled polycrystalline (Fe81Ga19)99B1 alloy sheet was investigated using X-ray and EBSD (Electron backscattering diffraction) methods. The η fiber (//RD) with dominant Goss ({110}) component was successfully obtained through sheet thickness after primary Recrystallization. Goss remains the dominant Texture component during further grain growth. The development of Goss can be attributed to the specific rolling induced favorable shear band morphology and deformation Texture. The results provide a prospective route for the efficient Recrystallization Texture optimization and economical production of Fe-Ga sheets.
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Effects of External Electric Field on AlN Precipitation and Recrystallization Texture of Deep-drawing 08Al Killed Steel Sheet
Journal of Materials Science & Technology, 2009Co-Authors: X. Zhao, Liang ZuoAbstract:The effects of an electric field on AIN precipitation and Recrystallization Texture were investigated. Cold-rolled 08Al killed steel sheets were annealed at 550℃according to the two-step processes, for various maintaining times, with and without applying an electric field. It was found that the electric field promotes the precipitation of the second phase (AIN particles), strengthens theγ-fiber and weakens theα-fiber Texture component in the recrystallized specimens. A possible explanation for the reinforcement ofγ-fiber Texture by the electric field is that the second phase AIN particle promotes the growth ofγ-fiber at the expense of differently oriented grains.
Zhihao Zhang - One of the best experts on this subject based on the ideXlab platform.
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the effects of Recrystallization Texture and grain size on magnetic properties of 6 5 wt si electrical steel
Journal of Magnetism and Magnetic Materials, 2016Co-Authors: Hongjiang Pan, Zhihao Zhang, Jianxin XieAbstract:Abstract Cold rolled sheets of high silicon electrical steel (Fe-6.5 wt% Si alloy) with thicknesses of 0.2–0.4 mm were fabricated by directional solidification and rolling, and the microstructure, Texture and magnetic properties of the sheets annealed at 700–1300 °C for 1 h were investigated. The roles of Recrystallization Texture and grain size in influencing the magnetic induction and core loss were clarified. All the samples had strong {100} Recrystallization Texture with volume fraction of 18.3–47.3% and exhibited high magnetic induction and low core loss. For the samples with a thickness of 0.2 mm after annealing at 800–1200 °C, the magnetic induction B8 and the core loss P10/50 reached 1.273–1.378 T and 0.49–0.84 W/kg, respectively. The grain size played a much more important role in the core loss than Recrystallization Texture. The average grain size to seek minimum core loss P10/50 was 536–615 μm in the high silicon electrical steel sheets with thicknesses of 0.2–0.4 mm, which was larger than 100–200 μm for the electrical steel with common silicon content. The magnetic induction B8 of the samples improved with an enhancement of {100} Recrystallization Texture, but reduced with an increase of average grain size. The effect of Recrystallization Texture on the magnetic induction B8 was much greater than that of grain size.
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Preparation of High Silicon Electrical Steel Sheets with Strong {100} Recrystallization Texture by the Texture Inheritance of Initial Columnar Grains
Metallurgical and Materials Transactions A, 2016Co-Authors: Hongjiang Pan, Zhihao Zhang, Jianxin XieAbstract:Texture evolutions and Recrystallization Texture features in warm- and cold-rolled sheets of high silicon electrical steel with two different initial microstructures (columnar-grained and equiaxed-grained microstructures) were investigated. The relationships between the Recrystallization Textures and the initial Textures (the Textures before rolling) of the samples were analyzed. The results showed that after annealing at 1073 K (800 °C) for 1 hour, strong {100} Recrystallization Textures with volume fractions of more than 47 pct were obtained in the columnar-grained samples fabricated by warm and cold rolling along the growing direction of the columnar grains. While after rolling and annealing in the same processes, only 12.8 pct volume fractions of {100} Recrystallization Texture were revealed in the equiaxed-grained samples. The formation of strong {100} Recrystallization Texture in the annealed sheets of high silicon electrical steel with initial columnar grains was attributed to the favorable Texture inheritance of the initial Texture during rolling and annealing. The columnar grains of strong near {100}〈001〉 ({100}〈001〉 ~ {310}〈001〉) orientation in the samples before rolling were transferred into deformed grains with orientations such as {100}〈011〉 and {100}〈012〉. after rolling. Afterwards, these deformed grains were further transferred into {100} oriented recrystallized grains, which formed strong {100} Recrystallization Texture in the annealed sheets and exhibited preferable soft magnetic properties.
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preparation of high silicon electrical steel sheets with strong 100 Recrystallization Texture by the Texture inheritance of initial columnar grains
Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science, 2016Co-Authors: Hongjiang Pan, Zhihao Zhang, Jianxin XieAbstract:Texture evolutions and Recrystallization Texture features in warm- and cold-rolled sheets of high silicon electrical steel with two different initial microstructures (columnar-grained and equiaxed-grained microstructures) were investigated. The relationships between the Recrystallization Textures and the initial Textures (the Textures before rolling) of the samples were analyzed. The results showed that after annealing at 1073 K (800 °C) for 1 hour, strong {100} Recrystallization Textures with volume fractions of more than 47 pct were obtained in the columnar-grained samples fabricated by warm and cold rolling along the growing direction of the columnar grains. While after rolling and annealing in the same processes, only 12.8 pct volume fractions of {100} Recrystallization Texture were revealed in the equiaxed-grained samples. The formation of strong {100} Recrystallization Texture in the annealed sheets of high silicon electrical steel with initial columnar grains was attributed to the favorable Texture inheritance of the initial Texture during rolling and annealing. The columnar grains of strong near {100}〈001〉 ({100}〈001〉 ~ {310}〈001〉) orientation in the samples before rolling were transferred into deformed grains with orientations such as {100}〈011〉 and {100}〈012〉. after rolling. Afterwards, these deformed grains were further transferred into {100} oriented recrystallized grains, which formed strong {100} Recrystallization Texture in the annealed sheets and exhibited preferable soft magnetic properties.
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The effects of Recrystallization Texture and grain size on magnetic properties of 6.5 wt% Si electrical steel
Journal of Magnetism and Magnetic Materials, 2016Co-Authors: Hongjiang Pan, Zhihao Zhang, Jianxin XieAbstract:Abstract Cold rolled sheets of high silicon electrical steel (Fe-6.5 wt% Si alloy) with thicknesses of 0.2–0.4 mm were fabricated by directional solidification and rolling, and the microstructure, Texture and magnetic properties of the sheets annealed at 700–1300 °C for 1 h were investigated. The roles of Recrystallization Texture and grain size in influencing the magnetic induction and core loss were clarified. All the samples had strong {100} Recrystallization Texture with volume fraction of 18.3–47.3% and exhibited high magnetic induction and low core loss. For the samples with a thickness of 0.2 mm after annealing at 800–1200 °C, the magnetic induction B8 and the core loss P10/50 reached 1.273–1.378 T and 0.49–0.84 W/kg, respectively. The grain size played a much more important role in the core loss than Recrystallization Texture. The average grain size to seek minimum core loss P10/50 was 536–615 μm in the high silicon electrical steel sheets with thicknesses of 0.2–0.4 mm, which was larger than 100–200 μm for the electrical steel with common silicon content. The magnetic induction B8 of the samples improved with an enhancement of {100} Recrystallization Texture, but reduced with an increase of average grain size. The effect of Recrystallization Texture on the magnetic induction B8 was much greater than that of grain size.