Ductility, texture and large magnetostriction of Fe–Ga-based sheets

Li, J.H.; Gao, Xuexu; Zhu, Jie; Bao, Xiaoqian; Xia, Tongling; Zhang, M.C.

doi:10.1016/j.scriptamat.2010.03.068

Cited by 81 publications

(35 citation statements)

References 12 publications

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“…In order to produce thin sheets with reasonable robustness and magnetostrictive properties, efforts have been made to produce the textured sheets by rolling and secondary crystallization processes [8][9][10][11][12]. Up to now, the secondary recrystallization, also named abnormal grain growth (AGG), of Goss-oriented ({110}<001>) grains has been considered as the most effective way to achieve the sharp <001> orientation along the rolling direction in the rolled Fe-Ga alloy sheets [13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Effect of Initial Oriented Columnar Grains on the Texture Evolution and Magnetostriction in Fe–Ga Rolled Sheets

Yuan

et al. 2017

Metals

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Abstract:The effects of initial oriented columnar grains on the texture evolution and magnetostriction in (Fe 83 Ga 17 ) 99.9 (NbC) 0.1 rolled sheets were investigated. The recrystallization texture evolution exhibited the heredity of initial orientations, concerning the formation of cube and Goss textures in the primary recrystallized sheet for the columnar-grained sample. Moreover, the growth advantage of Goss grains was more obvious than that of cube grains during the secondary recrystallization process. Because of the combined effect of this and Nb-rich precipitates as inhibitors, a sharp Goss texture and very large Goss grains were achieved in the secondary recrystallized sheet for the columnar-grained sample. For comparison, the secondary recrystallization in the equiaxed-grained sample was not fully developed although there were Nb-rich precipitates as inhibitors. We think this could be ascribed to the large particle size and premature coarsening of precipitates. Magnetostriction of the secondary recrystallized columnar-grained sheet was up to 232 ppm owing to the ideal Goss texture and quite large grain size. As for the equiaxed-grained sample, the magnetostriction was only 163 ppm in the secondary recrystallized sheet.

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Section: Introductionmentioning

confidence: 99%

Effect of Initial Oriented Columnar Grains on the Texture Evolution and Magnetostriction in Fe–Ga Rolled Sheets

Yuan

et al. 2017

Metals

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“…Thermal mechanical processes involving deformation and recrystallization have been employed to produce rolled Fe-Ga sheets [8][9][10][11][12] , and <001> orientation along the rolling direction (RD) is preferred to maximize the magnetostrictive performance. Up to now, the secondary recrystallization, also named by abnormal grain growth (AGG), of Goss oriented ({110}<001>) grains has been the most effective way to achieve the sharp <001> orientation and large magnetostriction along the RD in the rolled Fe-Ga sheets [13][14][15][16][17][18] .…”

Section: Introductionmentioning

confidence: 99%

Selective Abnormal Growth Behavior of Goss Grains in Magnetostrictive Fe-Ga Alloy Sheets

Yuan

et al. 2016

Mater. Trans.

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Selective abnormal growth behavior of Goss grains was investigated by interrupting secondary recrystallization process in magnetostrictive (Fe 83 Ga 17 ) 99.9 (NbC) 0.1 rolled alloy sheets. The evolution of microstructure and texture was analyzed by electron back-scattered diffraction while ramping the temperature from 1123 to 1353 K. The results indicate that before temperature increasing up to 1203 K, Goss grains had no advantages in size and quantity, and the abnormal grain growth did not occur. Goss grains grew abnormally from about 1218 K due to the inhibitory action of Nb-rich precipitates on normal growth of other orientated grains. The γ-ber texture was the predominant texture before the onset of secondary recrystallization. When the secondary recrystallization got fully development, a sharp Goss texture and an average magnetostriction up to 210 ppm were obtained in the sample annealed at 1353 K.

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“…As well known, the dispersion of NbC or Fe 2 B precipitates could refine grain size and pin dislocations, which results in the inhibition of intergranular fracture and the enhancement of mechanical properties. On the other hand, precipitates of NbC or Fe 2 B acting as inhibitors which resulted in abnormal grain growth (AGG) have promoted the developing of Cubic texture {100}<001> or Goss texture {110} <001> in the Fe-Ga rolled sheets [12,13]. Cubic or Goss texture play an important role in achieving high magnetostrictive performance due to the anisotropic nature of the magnetostriction in the Fe-Ga rolled sheets.…”

Section: Introductionmentioning

confidence: 99%

Effects of Precipitate Element Addition on Microstructure and Magnetic Properties in Magnetostrictive Fe₈₃Ga₁₇alloy

Li¹,

Yuan²,

Zhang³

et al. 2016

Journal of Magnetics

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The <100> oriented Fe 83 Ga 17 alloys with various contents of NbC or B were prepared by directionally solidification method at the growth rate of 720 mm·h. With a small amount of precipitates, the columnar grains grew with cellular mode during directional solidification process, while like-dendrite mode of grains growth was observed in the alloys with higher contents of 0.5 at% due to the dragging effect of precipitates on the boundaries. The NbC precipitates disperse both inside grains and along the boundaries of Fe 83 Ga 17 alloys with NbC addition, and the Fe 2 B secondary phase particles preferentially distribute along the grain boundaries in B-doped alloys. Precipitates could affect grain growth and improved the <100> orientation during directional solidification process. Small amount of precipitate element addition slightly increased the magnetostrictive strain, and a high value of 335 ppm under pre-stress of 15 MPa was achieved in the alloys with 0.1 at% NbC. Despite the fact that the effect on magnetic induction density of small amount of precipitates could be negligible, the coercivity markedly increased with addition of precipitate element for Fe 83 Ga 17 alloy due to the retarded domain motion resulted by precipitates.

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Ductility, texture and large magnetostriction of Fe–Ga-based sheets

Cited by 81 publications

References 12 publications

Effect of Initial Oriented Columnar Grains on the Texture Evolution and Magnetostriction in Fe–Ga Rolled Sheets

Effect of Initial Oriented Columnar Grains on the Texture Evolution and Magnetostriction in Fe–Ga Rolled Sheets

Selective Abnormal Growth Behavior of Goss Grains in Magnetostrictive Fe-Ga Alloy Sheets

Effects of Precipitate Element Addition on Microstructure and Magnetic Properties in Magnetostrictive Fe₈₃Ga₁₇alloy

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Ductility, texture and large magnetostriction of Fe–Ga-based sheets

Cited by 81 publications

References 12 publications

Effect of Initial Oriented Columnar Grains on the Texture Evolution and Magnetostriction in Fe–Ga Rolled Sheets

Effect of Initial Oriented Columnar Grains on the Texture Evolution and Magnetostriction in Fe–Ga Rolled Sheets

Selective Abnormal Growth Behavior of Goss Grains in Magnetostrictive Fe-Ga Alloy Sheets

Effects of Precipitate Element Addition on Microstructure and Magnetic Properties in Magnetostrictive Fe83Ga17alloy

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Effects of Precipitate Element Addition on Microstructure and Magnetic Properties in Magnetostrictive Fe₈₃Ga₁₇alloy