ABSTRACT

A finite element microstructure model with permeability tensors that considers crystallographic texture and grain size based on magnetic domain theory has been developed for the evaluation of magnetic anisotropy in polycrystalline steels. The model has proved capable of capturing the crystallographic texture, the grain size and the vector induction effects on the effective permeability behaviours for typical textures in steels. The predicted magnetic properties as a function of the magnetic field direction enables a quantitative characterisation of the magnetic anisotropy. The predicted effective permeability maps can serve as a visual indication of the crystallographic texture from magnetic values. These features have been experimentally validated against a commercial grain oriented electrical steel featuring strong texture and magnetic anisotropy.

摘要

已经开发了一种基于磁畴理论的具有渗透性张量的有限元微观结构模型，该模型考虑了晶体学纹理和晶粒尺寸，用于评估多晶钢中的磁各向异性。该模型已被证明能够捕获结晶纹理，晶粒尺寸和矢量感应对钢中典型纹理的有效磁导率行为的影响。所预测的作为磁场方向的函数的磁特性使得能够定量表征磁各向异性。预测的有效磁导率图可以用作根据磁值的晶体织构的视觉指示。