Grain-oriented electrical steel sheet and method for manufacturing same
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United States of America Patent
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Dec 4, 2018
Grant Date -
Sep 3, 2015
app pub date -
Dec 28, 2012
filing date -
Dec 28, 2011
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Abstract
A grain-oriented electrical steel sheet exhibits reduced iron loss and reduced noise. The electrical steel sheet has magnetic domains refined by regions with a high lattice defect density being locally formed on the surface of or within the steel sheet, in which the regions with a high lattice defect density has a hardness, as measured by a micro Vickers hardness meter, equal to or lower than that of other regions.
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