Single grain growth and large magnetostriction in secondarily recrystallized Fe–Ga thin sheet with sharp Goss (0 1 1)[1 0 0] orientation

Na, Suok-Min; Flatau, Alison B.

doi:10.1016/j.scriptamat.2011.11.020

Cited by 74 publications

(49 citation statements)

References 20 publications

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“…After the primary annealing, samples were rapidly heated from 850 to 900 • C at a rate of 10 • C/min in the furnace, and they were then slowly heated from 900 to 1080 • C at a controlled rate of 0.25 • C/min, and they were finally cooled by air to room temperature without dwell at 1080 • C. 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]. Previous studies have reported the achievement of sharp Goss orientation, by the combined effects of NbC particles as inhibitors and sulfur-induced surface energy [15][16][17]. Presently, most studies are about the rolling and recrystallization behaviors of the Fe-Ga polycrystalline alloys with equiaxed grains, and mainly focus on the influence of the final annealing process on abnormal grain growth.…”

Section: Methodsmentioning

confidence: 99%

“…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]. Previous studies have reported the achievement of sharp Goss orientation, by the combined effects of NbC particles as inhibitors and sulfur-induced surface energy [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

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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: Methodsmentioning

confidence: 99%

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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“…3) Some studies reported high performances of textured Fe-Ga alloy. 4,5) Fabrication of a single crystal has also been attempted, which has contributed for understanding the nature of magnetostriction in Fe-Ga alloys. [6][7][8] The texture formation by thermomechanical processing has also been suggested, which can realize flat-sheet forming and texture/microstructure control, simultaneously.…”

Section: Introductionmentioning

confidence: 99%

“…Na and Falatau successfully formed Goss texture ({011} < 100 > ) by applying hot/worm-rolling and annealing. 5) This was due to the secondary recrystallization as known as the fabrication technique of the Fe-Si oriented electrical steels. However, annealing in toxic H 2 S atmosphere was required to form the sharp texture.…”

Section: Introductionmentioning

confidence: 99%

Improvement of Magnetostrictive Properties of Fe-15mol%Ga Alloy by Texture Formation during High Temperature Uniaxial Compression Deformation

et al. 2017

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The texture control of Fe-Ga solid solution alloy is examined by high temperature deformation, based on the previously suggested mechanism of high temperature deformation texture formation, "preferential dynamic grain growth (PDGG)". As the result of uniaxial compression deformation of Fe-15 mol% Ga alloy at 1 173 K, sharp alignment of < 001 > along the compression axis was observed. Microstructural observation by EBSD revealed that the < 001 > alignment was attributable to the growth of < 001 > oriented grains. The observed textures and microstructures were similar to those seen in the previous studies of Fe-Si alloys, in which the activation of PDGG was confirmed. Based on these facts, it is concluded that PDGG can be applied as a texture control technique for Fe-Ga alloy. The deformed sample showed larger saturation magnetostriction than the sample without deformation, indicating the effectiveness of the texture control by high temperature deformation.

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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] . Previous studies have reported the achievement of sharp Goss orientation, by the combined effects of NbC particles as inhibitors and sulfur-induced surface energy effects [15][16][17] .…”

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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Single grain growth and large magnetostriction in secondarily recrystallized Fe–Ga thin sheet with sharp Goss (0 1 1)[1 0 0] orientation

Cited by 74 publications

References 20 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

Improvement of Magnetostrictive Properties of Fe-15mol%Ga Alloy by Texture Formation during High Temperature Uniaxial Compression Deformation

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

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