Anisotropy study of grain oriented steels with Magnetic Barkhausen Noise

被引:24
作者
de Campos, M. F. [1 ]
Campos, M. A. [1 ]
Landgraf', F. J. G. [1 ]
Padovese, L. R. [1 ]
机构
[1] PUVR Univ Fed Fluminense, BR-27255125 Volta Redonda, RJ, Brazil
来源
JOINT EUROPEAN MAGNETIC SYMPOSIA (JEMS) | 2011年 / 303卷
关键词
ELECTRICAL STEELS; HYSTERESIS LOOP; CARBON-STEEL; MICROSTRUCTURE; DEFORMATION; EMISSION; SILICON;
D O I
10.1088/1742-6596/303/1/012020
中图分类号
O59 [应用物理学];
学科分类号
摘要
Grain oriented electrical steels present strong anisotropy, due to a {110} < 001 > texture (Goss), with [100] direction parallel to rolling direction (RD) and [110] direction parallel to transverse direction (TD). MBN (Magnetic Barkhausen Noise) were employed to measure magnetic properties in several angles towards RD using a 15 degrees step. For 90 degrees to the rolling direction (i.e., TD), the MBN signal changes, decreasing the MBN(rms). It is found a connection between initial permeability and MBNrms. The lower initial permeability for the TD is related to a larger contribution of irreversible rotation in the hysteresis. The MBN procedure is non-destructive and provides rapid understanding of the anisotropy of the material, without the use of laborious methods like Epstein frame or toroidal coils.
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页数:6
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