Structure and texture formation in rolled Fe82Ga18 and (Fe82 Ga18)99B1 alloys after annealing under high magnetic field

The structure and crystallographic texture formation processes in two Fe–Ga magnetostrictive alloys during annealing of deformed samples under high magnetic field (HMF) 20 T have been studied. It was shown that the effect of the magnetic field on the structure transformation during annealing depends on the features of the recrystallization in alloys. In the case of recrystallization in a single-phase binary Fe-Ga alloy, the application of HMF along the rolling direction promotes the formation of <100> grains along this direction. This leads to a twofold increase in the magnetostriction of the polycrystalline sample. In the same alloy, but with the presence of particles of the second phase, HMF does not affect the texture. The reasons for this phenomenon were discussed. In addition, it was found that in both alloys, the application of HMF during annealing retards the processes of structure evolution. • High magnetic field (HMF) 20 T retards recovery and recrystallization processes in deformed Fe–Ga alloys. • In binary Fe–Ga alloy annealing under HMF led to significant texture changes and, consequently twofold increase in magnetostriction. • This effect is absent in the FeGaB alloy, where particles of the second phase change the regularities of recrystallization.