Patent ID: 11970751
Assignee: NIPPON STEEL CORPORATION
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  H | IPC C  H

Claim 1:
2. The grain-oriented electrical steel sheet according to claim 1, wherein,
in the cross-sectional view of the strain region, when an entire length of an observation field of view in a direction orthogonal to the sheet thickness direction of the base steel sheet is defined as Lz, and a total of void lengths Ld in the direction orthogonal to the sheet thickness direction of the base metal sheet is ΣLd, and a line segment ratio X of a void region in which the voids are present is defined by the following Equation 1,
the line segment ratio X is 20% or less.

X=(ΣLd/Lz)×100  (Equation 1)