公开(公告)号：US20240363272A1

公开(公告)日：2024-10-31

申请号：US18646207

申请日：2024-04-25

Applicant: Proterial, Ltd.

Inventor： Futoshi KUNIYOSHI

IPC: H01F1/057 ,  B22F3/16 ,  B22F9/02 ,  B22F9/04 ,  C22C28/00 ,  C22C38/00 ,  C22C38/06 ,  C22C38/10 ,  C22C38/14 ,  C22C38/16

CPC classification number: H01F1/0577 ,  B22F3/16 ,  B22F9/023 ,  B22F9/04 ,  C22C28/00 ,  C22C38/002 ,  C22C38/005 ,  C22C38/06 ,  C22C38/10 ,  C22C38/14 ,  C22C38/16 ,  B22F2009/044 ,  B22F2201/02 ,  B22F2201/11 ,  B22F2202/05 ,  B22F2998/10 ,  B22F2999/00

Abstract: Provided is a sintered R-T-B based magnet having high Br and high HcJ. A sintered R-T-B based magnet containing: R: 26.8 mass % or more and 31.5 mass % or less (R is a rare earth element, and necessarily contains Pr); M: 0.05 mass % or more and 2.00 mass % or less (M is at least one selected from the group consisting of Ga, Cu, Zn, Al, and Si, and necessarily contains Cu); B: 0.84 mass % or more and 0.94 mass % or less; and T: 61.5 mass % or more (T is Fe and Co, and 90% or more of T is Fe in mass ratio), and having an internal structure, wherein the internal structure includes: crystal grains; a first phase between adjacent two crystal grains; and a second phase with Cu and Pr concentrations higher than those of the first phase between the first phase and one or each of the two crystal grains and, wherein the second phase contains Pr of 20 mass % or more 65 mass % or less.

公开(公告)号：US20240352565A1

公开(公告)日：2024-10-24

申请号：US18579354

申请日：2021-08-27

Applicant: NIPPON STEEL CORPORATION

Inventor： Ryuichi NISHIMURA ,  Yasuhiro ITO ,  Yasunori SAWA ,  Koichi HAMADA ,  Satoshi HIRONAKA

IPC: C22C38/60 ,  B21D28/26 ,  C21D6/00 ,  C21D8/02 ,  C21D9/46 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/20 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  C22C38/44 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58

CPC classification number: C22C38/60 ,  B21D28/26 ,  C21D6/002 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0205 ,  C21D8/021 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0263 ,  C21D8/0278 ,  C21D9/46 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/20 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  C22C38/44 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58

Abstract: This outer plate component for an automobile includes a steel sheet, and a rolling direction of the steel sheet extends along a vehicle body left-right direction in plan view.

公开(公告)号：US20240352551A1

公开(公告)日：2024-10-24

申请号：US18684593

申请日：2022-08-25

Applicant: POSCO CO., LTD

Inventor： Young-Roc IM ,  Sang-Ho UHM ,  Young-Ha KIM

IPC: C21D9/46 ,  C21D1/18 ,  C21D1/84 ,  C21D6/00 ,  C21D8/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/06 ,  C22C38/22 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38

CPC classification number: C21D9/46 ,  C21D1/18 ,  C21D1/84 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0263 ,  C21D8/0278 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/06 ,  C22C38/22 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  C21D2211/001 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008

Abstract: Provided is a cold-rolled steel sheet including: by weight %, C: 0.10 to 0.16%, Si: 0.3 to 0.8%, Al: 0.01 to 0.5%, Mn: 2.0 to 3.0%, Cr: 0.001 to 0.5%, Mo: 0.001 to 0.5%, B: 0.0001 to 0.001%, Nb: 0.001 to 0.05%, Ti: 0.001 to 0.05%, P: 0.04% or less (excluding 0%), S: 0.01% or less (excluding 0%), N: 0.01% or less (excluding 0%), a remainder of Fe, and other unavoidable impurities, as a microstructure, by area %, ferrite: 10% or less (excluding 0%), retained austenite: more than 1% to 5% or less, martensite: 25% or more but less than 50%, and bainite: 35% or more but less than 70%. An average size of martensite-austenite (MA) in the bainite is 0.35 to 0.55 μm.

公开(公告)号：US12125620B2

公开(公告)日：2024-10-22

申请号：US17634321

申请日：2019-08-13

Applicant: NISSAN MOTOR CO., LTD.

Inventor： Ichiro Ishikawa ,  Takeshi Noda ,  Kazuhiro Ogawa

IPC: H01F1/147 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C23C8/32 ,  H01F1/16

CPC classification number: H01F1/147 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C23C8/32 ,  H01F1/16

Abstract: An electrical steel sheet includes a main surface and an end surface. The electrical steel sheet includes a base material part and an end surface nitrided layer that is provided on the end surface in a manner adjacent to the base material part and that contains nitrogen. The end surface nitrided layer has a surface hardness of 430 HV or more and 1250 HV or less. The end surface contains nitrogen in an amount higher than a nitrogen concentration at the main surface.

公开(公告)号：US12123080B2

公开(公告)日：2024-10-22

申请号：US18008639

申请日：2021-08-06

Applicant: NIPPON STEEL CORPORATION

Inventor： Yuji Sakiyama ,  Takashi Yasutomi ,  Katsuya Nakano ,  Yoshiaki Honda ,  Masahiro Nakata

IPC: C22C38/02 ,  B32B15/01 ,  C22C38/00 ,  C22C38/04 ,  C22C38/06 ,  C22C38/22 ,  C22C38/32 ,  C22C38/42 ,  C22C38/46 ,  C22C38/48 ,  C22C38/60

CPC classification number: C22C38/02 ,  B32B15/011 ,  C22C38/001 ,  C22C38/04 ,  C22C38/06 ,  C22C38/22 ,  C22C38/32 ,  C22C38/42 ,  C22C38/46 ,  C22C38/48 ,  C22C38/60 ,  B32B2307/536 ,  B32B2307/54 ,  B32B2311/30

Abstract: Provided is a steel sheet comprising a sheet thickness center part and a first surface layer part and a second surface layer part respectively arranged at two sides of the sheet thickness center part, wherein the first surface layer part and second surface layer part respectively independently have thicknesses of more than 10 μm to 30% or less of the sheet thickness, the first surface layer part and second surface layer part have average Vickers hardnesses different from the average Vickers hardness of a sheet thickness ½ position, and a first hardness cumulative value at a region from a surface of the first surface layer part side to 30% of the sheet thickness is 1.05 times or more of a second hardness cumulative value at a region from a surface of the second surface layer part side to 30% of the sheet thickness.

公开(公告)号：US12123071B2

公开(公告)日：2024-10-22

申请号：US17760448

申请日：2021-02-11

Applicant: TATA STEEL IJMUIDEN B.V.

Inventor： Radhakanta Rana

IPC: B32B15/01 ,  C21D6/00 ,  C21D8/02 ,  C21D9/52 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12

CPC classification number: C21D9/52 ,  B32B15/012 ,  B32B15/013 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0263 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C21D2211/008

Abstract: A hot-rolled (HR) strip steel with high flangeability at ultra-high strength levels with a high total elongation, bendability and toughness values, and a method of manufacturing the hot-rolled steel and use thereof.

公开(公告)号：US12123070B2

公开(公告)日：2024-10-22

申请号：US17299308

申请日：2019-11-27

Applicant: JFE STEEL CORPORATION

Inventor： Keishi Inoue ,  Hidetaka Kawabe ,  Masataka Yoshino ,  Mitsuyuki Fujisawa

IPC: C21D9/46 ,  C21D6/00 ,  C21D8/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/50 ,  C22C38/52 ,  C22C38/54 ,  C22C38/60

CPC classification number: C21D9/46 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0263 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/50 ,  C22C38/52 ,  C22C38/54 ,  C22C38/60 ,  C21D2211/005

Abstract: A ferritic stainless steel sheet has a predetermined chemical composition and thickness, and has an area ratio of crystal grains of 45 μm or more in grain size of 20% or less.

公开(公告)号：US20240344165A1

公开(公告)日：2024-10-17

申请号：US18681807

申请日：2021-08-27

Applicant: NIPPON STEEL CORPORATION

Inventor： Yasuhiro ITO ,  Mai NAGANO ,  Hiroyuki KAWATA ,  Satoshi HIRONAKA

IPC: C21D9/46 ,  C21D8/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C23C2/06 ,  C23C2/40

CPC classification number: C21D9/46 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0273 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C23C2/06 ,  C23C2/40

Abstract: Adopted are a steel sheet contains, as a chemical composition, by mass %, C: 0.040% to 0.105%, Mn: 1.00% to 2.30%, Si: 0.005% to 1.500%, Al: 0.005% to 0.700%, P: 0.100% or less, S: 0.0200% or less, N: 0.0150% or less, O: 0.0100% or less, and a remainder: Fe and impurities, in which ΔC that is calculated from C20, which is a C content at a 20 μm depth position from a surface, C60, which is a C content at a 60 μm depth position from the surface, and the following expression (1) is in a range of 0.20 to 0.90 mass %/mm, and a press-formed article that is obtained by press-forming the steel sheet.








Δ
⁢
C

=


(


C
60

-

C

2
⁢
0



)

/

(
0.04
)






(
1
)

公开(公告)号：US12116672B2

公开(公告)日：2024-10-15

申请号：US17596389

申请日：2020-04-24

Applicant: JFE STEEL CORPORATION

Inventor： Akito Mizutani ,  Mitsuyuki Fujisawa

IPC: C23C2/12 ,  C21D8/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/44 ,  C22C38/50 ,  C23C2/26 ,  C23C2/28 ,  C23C2/40

CPC classification number: C23C2/12 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0236 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/44 ,  C22C38/50 ,  C23C2/261 ,  C23C2/28 ,  C23C2/29 ,  C23C2/40 ,  C21D2211/005

Abstract: Provided is an Al or Al alloy-coated stainless steel sheet having a coating substrate and a hot-dip Al or Al alloy coated layer provided on a surface of the coating substrate, the coating substrate having a predetermined chemical composition, the Mo content and W content of the chemical composition of the coating substrate, the thickness of the coating substrate, and the thickness of the hot-dip Al or Al alloy coated layer satisfying predetermined relations.

公开(公告)号：US20240337004A1

公开(公告)日：2024-10-10

申请号：US18707639

申请日：2022-11-10

Applicant: KANTHAL AB

Inventor： Mats HÄTTESTRAND ,  Roger BERGLUND ,  Martin ÖSTLUND

IPC: C22C38/50 ,  B22F3/15 ,  B22F5/10 ,  B22F9/08 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/26 ,  C22C38/44

CPC classification number: C22C38/50 ,  B22F3/15 ,  B22F5/106 ,  B22F9/082 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/26 ,  C22C38/44 ,  B22F2009/0824 ,  B22F2301/35 ,  B22F2998/10 ,  B22F2999/00

Abstract: The present disclosure relates to a ferritic iron-chromium-aluminium (FeCrAl) powder which will provide seamless tubes of said powder and therefore will have a combination of good formability and form stability, good oxidation resistance and creep resistance. The present disclosure also relates to a seamless tube comprising a FeCrAl alloy. The FeCrAl powder comprises the following elements in weight %: Balance Fe and unavoidable impurities Al 4.0 to 6.0 0.01 to 0.10 Hf 0.05 to 0.25 O 0.01 to 0.04 Cr 19.0 to 23.0 Ta 0.01 to 0.40 Ti 0.01 to 0.15 C 0.01 to 0.05 N 0.01 to 0.10 Si Max 0.50 Mn Max 0.30 Zr 0.05 to 0.20 fulfilling the condition of: 2*[Y]−3*[O]