Abstract
J. Fuzer, Z Bircakova, A. Zeleňakova, P. Hrubovcak, P. Kollar, M. Predmerský and J. Huňady Institute of Physics, Faculty of Science, P.J. Safarik University, Park Angelinum 9, 041 54 Kosice, Slovakia U.S. Steel Kosice, s.r.o., Vstupný areal U.S. Steel, 044 54 Kosice, Slovakia The aim of this work was to investigate the influence of microstructural features on the soft magnetic properties. The materials chosen for this work were two types of the Epstein strips of commercially produced non-oriented electrical steels by U.S. Steel Kosice. The AC magnetic properties in 0.2–100 Hz frequency range were obtained by measurements of AC hysteresis loops by a fluxmeter based non-standard single sheet AC hysteresisgraph. The influence of the grain size and magnetic domains structure on the partial contributions (hysteresis, eddy current and anomalous) to the total losses is also discussed. The results of the frequency dependence of the total losses, measured by a single sheet loop tracer along the rolling direction and perpendicular to the rolling direction, show different contribution of partial components.
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