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Effect of Material Processing and Imposed Mechanical Stress on the Magnetic, Mechanical, and Microstructural Properties of High‐Silicon Electrical Steel
Author(s) -
Leuning Nora,
Steentjes Simon,
Hameyer Kay,
Schulte Markus,
Bleck Wolfgang
Publication year - 2016
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.201600039
Subject(s) - materials science , magnetostriction , composite material , anisotropy , residual stress , ultimate tensile strength , electrical steel , coercivity , perpendicular , metallurgy , magnetic field , condensed matter physics , optics , physics , geometry , mathematics , quantum mechanics
This paper investigates the detrimental effect of material processing steps on magnetic, mechanical, and microstructural properties of silicon‐alloyed steel. For that purpose, both water jet and guillotine cutting as well as various tensile loadings (elastic and plastic) are studied, which correlate to shape giving processes and mechanical loadings that occur during machine production and operation. Mechanical processing such as guillotine shear cutting induces internal stresses that alter the extrinsic magnetic material properties, such as coercivity and remnant induction. In comparison, water jet cutting causes smaller residual stresses. Particular attention is paid to the effect of magneto‐crystalline anisotropy, i.e., the influence of the cutting direction with respect to the rolling direction. In order to examine this further, the influence of internal stresses caused by cutting along and perpendicular to the rolling direction is investigated with the help of single‐sheet tester magnetic measurements. Therefore, the induced anisotropy is evaluated. The induced anisotropy due to the cutting technique is related to the stress‐dependent magnetostriction constant and the grain alignment during cutting. In order to evaluate the general influence of elastic mechanical loadings applied along or perpendicular to the rolling direction on the magnetic behavior, a single‐sheet tester equipped with a tensile loading unit is used. In addition, plastically deformed samples are characterized magnetically.