Nippon Steel Corporation

Shota Morimoto

Shuichi Nakamura

Shinya Yano

Tomoji Kumano

Shingo Okada

Yusuke Kawamura

Akio Oguri

A grain oriented electrical steel sheet includes the texture aligned with Goss orientation. In the grain oriented electrical steel sheet, when (αβγ) and (αβγ) represent deviation angles of crystal orientations measured at two measurement points which are adjacent on the sheet surface and which have an interval of 1 mm, the boundary condition BA is defined as [(α−α)+(β−β)+(γ−γ)]≥0.5°, and the boundary condition BB is defined as [(α−α)+(β−β)+(γ−γ)]≥2.0°, the boundary which satisfies the boundary condition BA and which does not satisfy the boundary condition BB is included.

Grain oriented electrical steel sheet

A grain-oriented electrical steel sheet having a metallographic structure after secondary-recrystallized annealing including matrix grains of Goss-oriented secondary recrystallized grains, wherein an existence frequency of Goss-oriented crystal grains having a major diameter of 5 mm or less in the matrix grains is 1.5 grains/cmor more and 8 grains/cmor less, and the magnetic flux density B8 is 1.88 T or more, and wherein deviation angles from a rolling direction of [001] direction of the Goss-oriented crystal grains having the major diameter of 5 mm or less are 7&#x2033; or less and 5&#xb0; or less, in terms of a simple or arithmetic average of &#x3b1; angle and &#x3b2; angle, respectively, wherein the &#x3b1; angle represents an angle formed by a longitudinal direction and a projection of the [001] on a specimen surface, and the &#x3b2; angle represents a tilt of the [001] out of the specimen surface.

Grain-oriented electrical steel sheet with excellent magnetic characteristics

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Tokyo, Japan

Shota Morimoto