Abstract: The magnetostrictive phenomenon of oriented electrical steel with different angles to the rolling direction was studied systematically, and it was found that the magnetostrictive strain λ0－p first increased slowly in the negative direction with the increase of the angle between external magnetic field direction and the rolling direction, then increased rapidly in the positive direction after reaching the peak value with the angle about 30°, and reached the positive peak value when the angle reached to 90°. This was mainly related to the angle between the direction of initial domain magnetization and the external magnetic field direction. At the same time, the strain amplitude λp－p was rising generally, which was at first increased slowly and decreased slightly when the strain amplitude between 30° and 60° because of the existing process of the sample from shortening to elongation in length direction. The variation law of A weight velocity LvA and A weight acceleration LaA was consistent with the strain amplitude.

Key words: magnetostriction, oriented electrical steel, angle to the rolling direction