Texture and Magnetostriction in Warm Rolled and Recrystallized Fe–Ga Alloy

A (Fe83.4Ga16.6)99.9(NbC)0.1 alloy was used to investigate the effect of thermomechanical treatment on the texture formation and magnetostriction. The main idea was to develop the Goss and cube texture after rolling and primary recrystallization, without secondary one, in order to enhance the magnetostriction strain. Rolling at elevated temperature was used to produce thin sheets; total degree of deformation was 83%. As a result, heterogeneous texture of deformation with a significant amount of orientations with 〈100〉 directions along the rolling direction was created. Subsequent primary recrystallization was initialized by annealing at different temperatures: 900, 950, and 1000°C. The texture evolution was studied by EBSD technique. The texture, residual stress level, and parallel magnetostriction were studied in the samples after recrystallization. By applying high temperature annealing, the magnetostriction is increased. The maximal magnetostriction strain is obtained after annealing for 2 h at 1000°C. An increase in magnetostriction caused by the texture change and a decrease in the internal stresses were shown.