無方向性電磁鋼板の集合組織に基づく磁化の異方性
1990 年 76 巻 1 号 p. 81-88
詳細
1990 年 76 巻 1 号 p. 81-88
A quantitative method for deriving the anisotropy in the magnetic induction from the texture data of electrical steel sheets was developed. Using the data of the three dimensional texture analysis by the vector method, magnetic induction parameter BT for any direction in the steel sheet plane was formulated, under the assumptions of (1) each grain is magnetized in one of the easy magnetization directions having a smallest angle from the direction of the applied field, and (2) interaction between neighbouring grains is negligible.
Comparing BT calculated from the data of the three dimensional texture analysis by the vector method with observed B50/BS, it was confirmed that the two agreed well in three kinds of non-oriented electrical steel sheets. By an observation of magnetic domains by SEM, it was revealed that the assumption for the calculation of BT that each grains had no domain walls in themselves was realized in the vicinity of B50. This was the reason for the agreement of calculated BT with observed B50/BS.
