Magnetostriction, Barkhausen noise and magnetization processes in E110 grade non-oriented electrical steels

被引:20
|
作者
Bohn, F. [1 ]
Guendel, A.
Landgraf, F. J. G.
Severino, A. M.
Sommer, R. L.
机构
[1] Univ Fed Santa Maria, Dept Fis, BR-97105900 Santa Maria, RS, Brazil
[2] Univ Fed Pelotas, BR-96412420 Bage, RS, Brazil
[3] Univ Sao Paulo, Dept Met & Mat Engn, BR-05508900 Sao Paulo, Brazil
[4] Ctr Brasileiro Pesquisas Fis, BR-22290180 Rio De Janeiro, Brazil
关键词
magnetostriction; Barkhausen noise; non-oriented electrical steels; magnetization processes;
D O I
10.1016/j.jmmm.2007.04.006
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Magnetostriction and Barkhausen noise are investigated in non-oriented electrical steels, with composition FeSi3.2%, corresponding to the E110 grade produced by ACESITA (Brazil), as a function of both, the magnetic induction level and the angle between the applied magnetic field and the rolling direction. The aim of this study is to understand the magnetization and hysteresis loss processes for this steel, identifying the magnetization mechanism taking place when magnetic field is applied in directions not aligned with the rolling direction, mainly at high magnetic induction levels (above 0.8 T). It is shown that the Barkhausen noise is always present at these high induction levels which can be associated to domain wall motion and to the nucleation and annihilation of 180 degrees and 90 degrees domains as well as to their evolution with the applied field. Thus, it is shown that the origin of the high induction loss in these samples is the motion of domain walls, irrespective to the angle with respect to the rolling direction. (c) 2007 Elsevier B. V. All rights reserved.
引用
收藏
页码:20 / 28
页数:9
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