公开(公告)号：US20240352565A1

公开(公告)日：2024-10-24

申请号：US18579354

申请日：2021-08-27

申请人： NIPPON STEEL CORPORATION

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

IPC分类号： 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分类号： 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

摘要： 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

申请人： POSCO CO., LTD

发明人： Young-Roc IM ,  Sang-Ho UHM ,  Young-Ha KIM

IPC分类号： 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分类号： 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

摘要： 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

申请人： NISSAN MOTOR CO., LTD.

发明人： Ichiro Ishikawa ,  Takeshi Noda ,  Kazuhiro Ogawa

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

CPC分类号： H01F1/147 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C23C8/32 ,  H01F1/16

摘要： 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：US12123082B2

公开(公告)日：2024-10-22

申请号：US17594382

申请日：2020-04-13

申请人： JFE STEEL CORPORATION

发明人： Yukino Miyamoto ,  Yoshiaki Zaizen ,  Yoshihiko Oda

IPC分类号： C22C38/14 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/12

CPC分类号： C22C38/14 ,  C22C38/002 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/12

摘要： A non-oriented electrical steel sheet having: low high-frequency iron loss and high magnetic flux density; an inner layer and surface layers provided on both sides of the inner layer, the surface layers and the inner layer having specific chemical compositions; the thickness t of 0.01 mm to 0.35 mm; a multilayer ratio of t1 to t of 0.10 to 0.70, t1 denoting a total thickness of the surface layers; a difference between [Si]1 and [Si]0 of 1.0 mass % to 4.5 mass % or less, [Si]1 denoting a Si content in each of the surface layers and [Si]0 denoting a Si content in the inner layer; and a difference between [Mn]0 and [Mn]1 of 0.01 mass % to 0.40 mass %, [Mn]0 denoting a Mn content at a mid-thickness position t/2 and [Mn]1 denoting an average Mn content in a region from a surface to a position at a depth of ( 1/10)t.

公开(公告)号：US12123080B2

公开(公告)日：2024-10-22

申请号：US18008639

申请日：2021-08-06

申请人： NIPPON STEEL CORPORATION

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

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

CPC分类号： 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

摘要： 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

申请人： TATA STEEL IJMUIDEN B.V.

发明人： Radhakanta Rana

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

CPC分类号： 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

摘要： 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

申请人： JFE STEEL CORPORATION

发明人： Keishi Inoue ,  Hidetaka Kawabe ,  Masataka Yoshino ,  Mitsuyuki Fujisawa

IPC分类号： 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分类号： 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

摘要： 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：US12123065B2

公开(公告)日：2024-10-22

申请号：US16065785

申请日：2016-12-23

申请人： POSCO

发明人： Oh Yeoul Kwon ,  Se Min Park ,  Jong-Tae Park ,  Jae Kyoum Kim ,  Seung Gon Lee ,  Won Gul Lee

IPC分类号： B23K26/364 ,  B23K26/40 ,  C21D8/12 ,  C21D10/00 ,  C23G1/02 ,  H01F1/18 ,  B23K103/04 ,  C21D9/46 ,  C22C38/02

CPC分类号： C21D8/1283 ,  B23K26/364 ,  B23K26/40 ,  C21D8/12 ,  C21D10/00 ,  C23G1/02 ,  H01F1/18 ,  B23K2103/04 ,  C21D8/1222 ,  C21D8/1233 ,  C21D8/1255 ,  C21D8/1294 ,  C21D9/46 ,  C21D2201/05 ,  C22C38/02

摘要： A grain-oriented electrical steel sheet according to an embodiment of the present disclosure includes: a forsterite layer formed on the surface of an electrical steel sheet; a groove which is formed on the forsterite layer in a direction perpendicular to a rolling direction; and a forsterite calcination layer which is formed in the direction of both ends of the electrical steel sheet on the basis of an upper end of the groove and has a width of 1.1 to 1.3 times the width of the groove.

公开(公告)号：US20240344188A1

公开(公告)日：2024-10-17

申请号：US18634803

申请日：2024-04-12

申请人： UT-Battelle, LLC

发明人： Dean T. Pierce ,  Govindarajan Muralidharan

IPC分类号： C22C38/54 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/52

CPC分类号： C22C38/54 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/52

摘要： A steel alloy can comprise, consist essentially of, or consist of, in weight percent: 0.022 to 0.257 C; 0.01 to 0.085 N; 0.0 to 1.5 Ni; 0.1 to 0.7 Mn; 2.52 to 5.05 Cu; 8.67 to 14 Cr; 0.1 to 0.96 Si; 0.1 to 0.47 V; 0.4 to 2 Mo; 0 to 1.1 W; 0.0 to 0.5 Nb; 0.0 to 0.03 S; 0.0 to 0.03 P; 0.0 to 2 Co; and, balance Fe.

公开(公告)号：US20240344186A1

公开(公告)日：2024-10-17

申请号：US18294342

申请日：2022-03-30

申请人： SUMITOMO ELECTRIC INDUSTRIES, LTD.

发明人： Hiromu IZUMIDA ,  Tetsuya NAKAJIMA ,  Hiroto KONTANI

IPC分类号： C22C38/34 ,  C21D1/18 ,  C21D1/74 ,  C21D6/00 ,  C21D9/52 ,  C22C38/02 ,  C22C38/04 ,  C22C38/24

CPC分类号： C22C38/34 ,  C21D1/18 ,  C21D1/74 ,  C21D6/002 ,  C21D6/005 ,  C21D6/008 ,  C21D9/525 ,  C22C38/02 ,  C22C38/04 ,  C22C38/24 ,  C21D2211/008

摘要： A steel wire for springs includes a main steel body and having a line shape, and an oxidized layer covering an outer peripheral surface of the main body. The steel constituting the main body contains between 0.6 and 0.7 mass % C, between 1.7 and 2.5 mass % Si, between 0.2 and 1 mass % Mn, between 0.6 and 2 mass % Cr, and between 0.08 and 0.25 mass % V, with the balance consisting of Fe and unavoidable impurities. The steel constituting the main body has a tempered martensitic structure. The oxidized layer includes a high Si concentration layer having a maximum concentration of Si of not less than 2.5 times and not more than 5.5 times that of the main body. The main body includes an intergranular oxidized layer arranged to constitute the outer peripheral surface and having a thickness of not less than 0.5 μm and not more than 2.5 μm.