Relation between the microstructural properties of electrical steels and the Preisach modelling

• Published in: Journal of magnetism and magnetic materials Vol. 195; no. 1; pp. 233 - 249
• Main Authors: Dupré, Luc R, Bán, Gabor, Von Rauch, Marianne, Melkebeek, Jan A.A
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.04.1999; Elsevier Science
• Subjects: Applied sciences; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Crystallographic texture; Domain effects, magnetization curves, and hysteresis; Dynamic Preisach model; Exact sciences and technology; Grain size; Hysteresis; Magnetic properties and materials; Magnetization curves, hysteresis, Barkhausen and related effects; Magnetization curves, magnetization reversal, hysteresis, barkhausen and related effects; Metals. Metallurgy; Physics; Silicon iron alloys; Grain size; Crystallographic texture; Silicon iron alloys; 75.60.−d; 02.70; Hysteresis; Dynamic Preisach model; Silicon alloys; Magnetization; Theoretical study; Iron alloys; Steels; Microstructure; Texture
• ISSN: 0304-8853
• DOI: 10.1016/S0304-8853(98)01158-5

In this paper, the relation of the microstructural properties of electrical steels and the material parameters in the dynamic Preisach model is established. Particular experimental work was performed in order to separate the influence of grain size from the crystallographic texture. First, the parameters defined in the dynamic Preisach model has been fitted using the hysteresis loss characteristics. Next, we identified and separated the effect of average grain size from the crystallographic texture on each material parameter defined in the Lorentzian–Preisach distribution function. Here, the same texture dependence was identified for all kinds of magnetisation processes, i.e. for the irreversible and reversible parts of the quasi-static magnetisation and for the AC excess loss behaviour. Finally, the Preisach distribution function is rewritten explicitly including the grain size and crystallographic texture dependence.