Retaining the ⟨001⟩ Orientation from Initial Columnar Grains and Magnetostriction in Binary Fe-Ga Alloy Sheets

抄録

Sheets of binary Fe₈₃Ga₁₇ alloy were prepared by a method which involved rolling of specimens with ⟨100⟩ oriented columnar grains arranged initially along rolling direction. The ductility of the binary Fe₈₃Ga₁₇ alloy with ⟨100⟩ oriented columnar grains fabricated via directional solidification could be improved compared with that of the alloy with equiaxed grains. The orientation gradually rotated to a ⟨110⟩ from the ⟨100⟩ direction during the rolling process, and the final rolled texture was dominated by strong {100}⟨011⟩. The sharp {110}⟨001⟩ Goss orientation was confirmed in the final annealed sheets. Excluding the effects of inhibitors and surface energy on textural evolution, it is thought that the ⟨001⟩ orientation was obtained from the hereditary characteristics of the initial columnar grains. A high magnetostriction of 185 ppm without pre-stress was attributed to the strong Goss texture observed in the final recrystallized sheets.