RPTU Kaiserslautern-Landau
FeSi alloy, also referred to as electrical steel (ES), is the most common material among all soft magnetic materials in electric power drives. It is well known, that the grain orientation of ES significant influences the magnetic anisotropy. Magnetization is easy alongside <001>, while the direction of hard magnetization is known to be <111>. Therefore, electrical steel classified as grain-oriented electrical steel (GOES) mainly is used as a core material for static equipment and non-oriented electrical steel (NOES) is used in rotating electrical parts. Additively manufactured electrical steel (AMES) is subject to growing scientific and industrial attention. AMES allows producing of components for electric power drives with specific local grain orientation. Furthermore, it is possible to increase the Si content of these alloys. In present study, crystallographic microstructure and magnetic domain structure of three types of electrical steel were thoroughly assessed: GOES, NOES and AMES with 3 wt-% of Si were investigated by light and scanning electron microscopy (SEM) inclusive electron backscatter diffraction (EBSD). Hence, the (110)<001> texture of GOES, individual grain orientations of NOSE and AMES as well as misorientation distribution within the grains and at the grain boundaries were characterized. Further, the magnetic domain structure of the three investigated materials was visualized using the Magneto Optical Kerr Effect (MOKE) in light microscopy. The comparison of SEM/EBSD micrographs with MOKE micrographs allows for comprehensive characterization of the relationship between crystallographic microstructure and the magnetic domain structure as well as give the information about the mobility of magnetic domains.
Poster
Erwerben Sie einen Zugang, um dieses Dokument anzusehen.
© 2026