方向性ケイ素鋼板の圧縮力印加および除去による応力磁化特性

抄録

The effects of stress magnetization in grainoriented silicon steel sheets under compressive stress were investigated. Reversible and irreversible magnetization changes due to the application and remova1 of compression under a constant magnetic field were measured and discussed. There was no difference in the reversible magnetization change when compression was applied or removed. However, there was a large difference in the irreversible magnetization change when compression was applied or removed. The irreversible magnetization change due to the removal of compression can be explained clearly by the difference in the magnetization on the stress-magnetization hysteresis loop under the same magnetic field. This magnetization change can be calculated from the change in the volume of the domain structure. The irreversible magnetization change due to the angle of the sample is also discussed.