Intermediate Annealing of Warm-rolled Sheets and its Influence on the Texture Evolution in the Rolled Columnar-grained Fe-Ga Alloys

Abstract

Magnetostrictive Fe-Ga rolled sheets were prepared from columnar-grained alloys with <001> preferred orientation, and the texture evolution during rolling and annealing processes was investigated. During rolling processes without intermediate annealing, η-fiber texture was inherited from the initial <001> oriented columnar grains, but η-grains tended to cluster in the primarily annealed sheets. Intermediate annealing, 850°C for 5min, on the warm-rolled sheets greatly affected the evolution of annealing texture. The main texture was γ-fiber texture in the primarily annealed sheets with intermediate annealing, and strong Goss texture with saturation magnetostriction above 200ppm was achieved in the finally annealed sheets.