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Title:
NON-ORIENTED ELECTROMAGNETIC STEEL SHEET AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2022/196800
Kind Code:
A1
Abstract:
This non-oriented electromagnetic steel sheet has a prescribed chemical composition, wherein one or more particles formed from a precipitate of one or more kinds of sulfides or oxysulfides selected from the group consisting of Mg, Ca, Sr, Ba, Ce, La, Nd, Pr, Zn, and Cd or a precipitate of both a sulfide and an oxysulfide and having a particle diameter of greater than 0.5 μm are present in a 10000 μm2 visual field, and under observation by means of EBSD in a plane parallel to the surface of the steel sheet, when the entire surface area is Stot, the surface area of {100} orientation particles is S100, the surface area of oriented particles for which the Taylor factor M is greater than 2.8 is Styl, the total surface area of oriented particles for which the Taylor factor M is 2.8 or less is Stra, the average KAM value of the {100} orientation particles is K100, and the average KAM value of the oriented particles for which the Taylor factor M is greater than 2.8 is Ktyl, the inequalities 0.20≤Styl/Stot≤0.85, 0.05≤S100/Stot≤0.80, S100/Stra≥0.50, and K100/Ktyl≤0.990 are satisfied.

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Inventors:
MURAKAWA TESSHU (JP)
FUKUCHI MINAKO (JP)
Application Number:
PCT/JP2022/012698
Publication Date:
September 22, 2022
Filing Date:
March 18, 2022
Export Citation:
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Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C21D8/12; C21D9/46; C22C38/00; C22C38/60; H01F1/147
Domestic Patent References:
WO2019160108A12019-08-22
WO2016148010A12016-09-22
WO2015199211A12015-12-30
Foreign References:
JP2011162821A2011-08-25
JP2013112853A2013-06-10
JP2021509154A2021-03-18
JP2002363713A2002-12-18
KR20120074394A2012-07-06
JP2021045986A2021-03-25
JP2017193754A2017-10-26
JP2011111658A2011-06-09
JP2018003049A2018-01-11
JPH08143960A1996-06-04
JP2002363713A2002-12-18
JP2011162821A2011-08-25
JP2013112853A2013-06-10
JP4029430B22008-01-09
JPH1036912A1998-02-10
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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