Recrystallization behavior and magnetostriction under pre-compressive stress of Fe-Ga-B sheets

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• 作者：J.H. Li^a ; X.X. Gao^b ; ^{gaox@skl.ustb.edu.cn} ; J.X. Xie^b ; ^c ; C. Yuan^b ; J. Zhu^b ; R.B. Yu^a
• 关键词：A. Magnetic intermetallics ; C. Recrystallization and recovery ; B. Texture ; B. Magnetic properties ; G. Magnetic applications
• 刊名：Intermetallics
• 出版年：2012
• 期刊代码：36_09669795
• 类别：ms
• 出版时间：July, 2012
• 卷：26
• 期：Complete
• 页码：66-71
• 文件大小：1343 K

摘要

The recrystallization behavior of the rolled Feb>82.2b>Gab>16.8b>B alloy sheet suggested that the material was fully recrystallized and the distribution of grain size had become quite heterogeneous after annealing at 650聽掳C for 1聽h. The strong primary recrystallization texture {111}<110> was developed by way of the discontinuous growth of {111}<110> grains. The magnetic field paralleling to the rolling direction promoted the development of 畏-fiber texture during primary recrystallization. The relation between secondary recrystallization texture and magnetostriction indicated that the cubic texture {001}<100> was obtained in secondary-recrystallized sheets, corresponding to the largest magnetostriction, and a deviation from {001}<100> texture resulted in a decrease of magnetostriction. The 鈥渏ump effect鈥?of magnetostrictive strain was obvious when the sample was subjected to compressive stress. Large magnetostrictive strains, of 171聽ppm and of聽鈭?46聽ppm, were observed for the annealed sheets with the thickness of 0.26聽mm under 24聽MPa compressive stresses.