	US 11,942,246 B2
	Non-oriented electrical steel sheet
Minako Fukuchi, Tokyo (JP); Yoshiaki Natori, Tokyo (JP); and Tesshu Murakawa, Tokyo (JP)
Assigned to NIPPON STEEL CORPORATION, Tokyo (JP)
Appl. No. 18/274,385
Filed by NIPPON STEEL CORPORATION, Tokyo (JP)
PCT Filed Mar. 31, 2022, PCT No. PCT/JP2022/016385 § 371(c)(1), (2) Date Jul. 26, 2023, PCT Pub. No. WO2022/210998, PCT Pub. Date Oct. 6, 2022.
Claims priority of application No. 2021-063551 (JP), filed on Apr. 2, 2021.
Prior Publication US 2024/0047106 A1, Feb. 8, 2024
Int. Cl. C21D 9/46 (2006.01); C21D 1/74 (2006.01); C21D 6/00 (2006.01); C21D 8/12 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/08 (2006.01); C22C 38/10 (2006.01); C22C 38/14 (2006.01); C22C 38/16 (2006.01); C22C 38/60 (2006.01); H01F 1/147 (2006.01)

CPC H01F 1/14775 (2013.01) [C21D 1/74 (2013.01); C21D 6/001 (2013.01); C21D 6/005 (2013.01); C21D 6/007 (2013.01); C21D 6/008 (2013.01); C21D 8/1222 (2013.01); C21D 8/1233 (2013.01); C21D 8/1261 (2013.01); C21D 8/1277 (2013.01); C21D 9/46 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/004 (2013.01); C22C 38/008 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/08 (2013.01); C22C 38/10 (2013.01); C22C 38/14 (2013.01); C22C 38/16 (2013.01); C22C 38/60 (2013.01); C22C 2202/02 (2013.01)]

2 Claims

1. A non-oriented electrical steel sheet comprising, as a chemical composition, by mass %:

C: 0.0100% or less;

Si: 1.5% to 4.0%;

sol. Al: 0.0001% to 1.000%;

S: 0.0100% or less;

N: 0.0100% or less;

Ti: 0.0005% to 0.0050%;

one or more selected from the group consisting of Mn, Ni, and Cu: 2.5% to 5.0% in total;

Co: 0.0% to 1.0%;

Sn: 0.00% to 0.40%;

Sb: 0.00% to 0.40%;

P: 0.000% to 0.400%;

one or more selected from the group consisting of Mg, Ca, Sr, Ba, Ce, La, Nd, Pr, Zn, and Cd: 0.000% to 0.010% in total, in which Expression (1) is satisfied in a case where a Mn content (mass %) is indicated as [Mn], a Ni content (mass %) is indicated as [Ni], a Cu content (mass %) is indicated as [Cu], a Si content (mass %) is indicated as [Si], a sol. Al content (mass %) is indicated as [sol. Al], and a P content (mass %) is indicated as [P]; and

a remainder consisting of Fe and impurities,

wherein, in a case where an area ratio of grains having a crystal orientation of an {hkl}<uvw> orientation (within a tolerance of 10°) when measured by EBSD is denoted as Ahkl-uvw, A411-011 is 15.0% or more, and

the non-oriented electrical steel sheet has an average grain size of 10.0 μm to 40.0 μm,

(2×[Mn]+2.5×[Ni]+[Cu])−([Si]+2×[sol. Al]+4×[P])≥1.50% (1).