公开(公告)号：US12123069B2

公开(公告)日：2024-10-22

申请号：US17286148

申请日：2019-10-16

申请人： JFE STEEL CORPORATION

发明人： Yoshihiko Ono ,  Junya Tobata ,  Hiroyuki Akimoto ,  Yoichiro Matsui ,  Shinjiro Kaneko

IPC分类号： C21D9/46 ,  C21D1/20 ,  C21D6/00 ,  C21D8/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/42 ,  C22C38/44 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58 ,  C22C38/60

CPC分类号： C21D9/46 ,  C21D1/20 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0263 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/42 ,  C22C38/44 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58 ,  C22C38/60 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008

摘要： A steel sheet having a specified chemical composition and a method for producing the steel sheet. The steel sheet has a microstructure comprising ferrite: 5% or less, and at least one of upper bainite, fresh martensite, tempered martensite, lower bainite, and retained γ: 95% to 100% by area percentage, and retained γ: 4% to 15% by volume percentage. Retained γUB has a specified area percentage SγUB, retained γLB has a specified distribution number NγLB, and at least one of (i) fresh martensite has a specified equivalent circular grain diameter and aspect ratio and (ii) retained γ grains has a specified equivalent circular grain diameter and aspect ratio.

公开(公告)号：US12123064B2

公开(公告)日：2024-10-22

申请号：US17422406

申请日：2020-01-30

申请人： NIPPON STEEL CORPORATION

发明人： Hiroshi Shuto ,  Koutarou Hayashi ,  Hiroshi Kaido ,  Akifumi Sakakibara ,  Jun Ando ,  Tetsu Asato

IPC分类号： C21D9/46 ,  C21D8/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C21D1/02

CPC分类号： C21D8/0226 ,  C21D9/46 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C21D1/02 ,  C21D2211/001

摘要： This hot-rolled steel sheet has a predetermined chemical composition, in which a metal microstructure contains, by area %, 3.0% or more of residual austenite, has a ratio L52/L7 of a length L52 of a grain boundary having a crystal orientation difference of 52° to a length L7 of a grain boundary having a crystal orientation difference of 7° about a direction of 0.10 or more and 0.18 or less, has a standard deviation of a Mn concentration of 0.60 mass % or less, and has a tensile strength of 980 MPa or more.

公开(公告)号：US20240344164A1

公开(公告)日：2024-10-17

申请号：US18646241

申请日：2024-04-25

申请人： POSCO CO., LTD

发明人： Ki-Cheol Kang ,  Chung-Hwan Lee ,  Yong-Joo Kim ,  Kang-Min Lee ,  Kyoo-Young Lee

IPC分类号： C21D9/46 ,  B32B15/01 ,  B32B15/04 ,  B32B15/18 ,  C21D1/19 ,  C21D1/25 ,  C21D1/76 ,  C21D1/84 ,  C21D3/04 ,  C21D6/00 ,  C21D8/02 ,  C21D9/56 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/18 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/34 ,  C22C38/38 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/58 ,  C23C2/02 ,  C23C2/06 ,  C23C2/28 ,  C23C2/40 ,  C23C28/00 ,  C23C28/02 ,  C23C30/00

CPC分类号： C21D9/46 ,  B32B15/01 ,  B32B15/013 ,  B32B15/04 ,  B32B15/043 ,  B32B15/18 ,  C21D1/19 ,  C21D1/25 ,  C21D1/76 ,  C21D1/84 ,  C21D3/04 ,  C21D6/002 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0257 ,  C21D8/0263 ,  C21D8/0273 ,  C21D8/0278 ,  C21D9/562 ,  C22C38/001 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C22C38/14 ,  C22C38/18 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/34 ,  C22C38/38 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/58 ,  C23C2/02 ,  C23C2/022 ,  C23C2/0224 ,  C23C2/024 ,  C23C2/06 ,  C23C2/28 ,  C23C2/29 ,  C23C2/40 ,  C23C28/025 ,  C23C28/3225 ,  C23C28/345 ,  C23C30/00 ,  C23C30/005 ,  B32B2307/732 ,  Y10T428/12583 ,  Y10T428/1259 ,  Y10T428/12597 ,  Y10T428/12611 ,  Y10T428/12618 ,  Y10T428/1266 ,  Y10T428/12667 ,  Y10T428/12799 ,  Y10T428/12958 ,  Y10T428/12965 ,  Y10T428/12972 ,  Y10T428/12993 ,  Y10T428/24942 ,  Y10T428/2495 ,  Y10T428/24967 ,  Y10T428/24983 ,  Y10T428/26 ,  Y10T428/27 ,  Y10T428/273

摘要： The present disclosure relates to a high-strength hot-dip galvanized steel sheet having excellent surface quality and electrical resistance spot weldability, and a method for manufacturing the same. A galvanized steel sheet according to an aspect of the present disclosure is a galvanized steel sheet including a base steel sheet and a zinc-based plating layer formed on a surface of the base steel sheet, wherein a ratio (a/b) of a hardness of a surface layer portion (a) to a hardness of an internal portion (b) of the base steel sheet may be less than 0.95.

公开(公告)号：US12110598B2

公开(公告)日：2024-10-08

申请号：US18235219

申请日：2023-08-17

申请人： Osaka Gas Co., Ltd.

发明人： Mitsuaki Echigo ,  Hisao Ohnishi

IPC分类号： C23C8/18 ,  C22C38/50 ,  C23C28/00 ,  C23C28/04 ,  C25D3/12 ,  C25D5/48 ,  H01M8/1226

CPC分类号： C23C8/18 ,  C22C38/50 ,  C23C28/04 ,  C23C28/345 ,  C25D3/12 ,  C25D5/48 ,  H01M8/1226

摘要： Provided is an alloy material including a metal oxide thin layer that can be formed using a simple method at low cost and can further suppress volatilization of Cr, which causes deterioration of a fuel cell, compared with a case where conventional expensive materials are used. Disclosed is a manufacturing method for an alloy material including a coating treatment step for coating a substrate made of a Fe—Cr based alloy with Co, and an oxidation treatment step for performing oxidation treatment on the substrate in a moisture-containing atmosphere after the coating treatment step.

公开(公告)号：US20240327941A1

公开(公告)日：2024-10-03

申请号：US18251034

申请日：2021-09-01

申请人： Siemens Energy Global GmbH & Co. KG

发明人： Torsten Neddemeyer ,  Bora Kocdemir ,  Axel Bublitz ,  Karsten Kolk

IPC分类号： C21D6/00 ,  C21D1/26 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58 ,  C22C38/60

CPC分类号： C21D6/004 ,  C21D1/26 ,  C21D6/005 ,  C21D6/008 ,  C22C38/001 ,  C22C38/002 ,  C22C38/008 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58 ,  C22C38/60 ,  C21D2211/001

摘要： An alloy, a raw workpiece, a component and a method contain or create austenites. The new alloy allows austenites to be formed or treated at higher temperatures, with new heat treatments also being used. Various heat treatments may be carried out with reference to the strength/toughness balance and notch sensitivity.

公开(公告)号：US12098450B2

公开(公告)日：2024-09-24

申请号：US17271024

申请日：2019-08-22

申请人： KOMATSU LTD. ,  NIPPON STEEL CORPORATION

发明人： Eiji Amada ,  Kazuo Maeda ,  Naomi Kobayashi ,  Takashi Noda ,  Mamoru Hatano ,  Takafumi Amata ,  Yutaka Neishi ,  Kei Miyanishi ,  Ryoji Nishijima

IPC分类号： C22C38/04 ,  C21D7/13 ,  C21D9/00 ,  C22C38/00 ,  C22C38/02 ,  C22C38/44 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54

CPC分类号： C22C38/04 ,  C21D7/13 ,  C21D9/0087 ,  C22C38/002 ,  C22C38/02 ,  C22C38/44 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C21D2211/008

摘要： A track link which is a tracked undercarriage component is made of a steel having a specific component composition, and includes a high hardness portion having a hardness of HRC 57 or more and HRC 60 or less, and a low hardness portion. The high hardness portion includes a first matrix including a martensite phase and a residual austenite phase, and first nonmetallic particles dispersed in the first matrix and including at least one species selected from the group consisting of MnS, TiCN, and NbCN, and it does not include a M23C6 carbide. The low hardness portion includes a second matrix including a martensite phase, and second nonmetallic particles dispersed in the second matrix and including at least one species selected from the group consisting of MnS, TiCN, and NbCN, and it does not include a M23C6 carbide.

公开(公告)号：US20240301539A1

公开(公告)日：2024-09-12

申请号：US17758881

申请日：2022-03-21

申请人： SHANDONG INDUSTRIAL RESEARCH INSTITUTE OF ADVANCED MATERIALS CO., LTD. ,  STATE POWER INVESTMENT CORPORATION HYDROGEN ENERGY CO., LTD.

发明人： Huaxing LU ,  Yeting XI ,  Yunmin YANG ,  Jian WEI

IPC分类号： C22C38/44 ,  C22C38/02 ,  C22C38/42 ,  C22C38/48 ,  C22C38/50 ,  C25D11/34 ,  C25D21/12 ,  H01M8/021

CPC分类号： C22C38/44 ,  C22C38/02 ,  C22C38/42 ,  C22C38/48 ,  C22C38/50 ,  C25D11/34 ,  C25D21/12 ,  H01M8/021

摘要： Provided are a ferritic stainless steel used for bipolar plates of fuel cells, a controlling method of surface roughness, a method of forming passivation films, and use. The ferritic stainless steel comprises C of less than or equal to 0.03 wt. %, N of less than or equal to 0.02 wt. %, Si of less than or equal to 0.4 wt. %, Mn of less than or equal to 0.5 wt. %, Cr of 16-23 wt. %, Cu of 0-2.0 wt. %, Mo of 1.8-2.5 wt. %, Ni of 0.2-2.0 wt. %, Ti of 0.1-0.5 wt. %, Nb of 0.005-0.5 wt. %, P of less than or equal to 0.02 wt. %, S of less than or equal to 0.02 wt. %, and a remainder composed of Fe and other unavoidable accompanying elements, and the ferritic stainless steel has a grain size number of 4-9. The ferritic stainless steel has excellent corrosion resistance and electrical conductivity, and good elongation and deformation as well, exhibiting both economy and cost advantages.

公开(公告)号：US12084752B2

公开(公告)日：2024-09-10

申请号：US17977622

申请日：2022-10-31

申请人： QUESTEK INNOVATIONS LLC

发明人： Abhinav Saboo ,  Ricardo Komai ,  Dana Frankel ,  Marie Thomas ,  Greg Olson

IPC分类号： C22C38/50 ,  B33Y70/00 ,  C22C38/00 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  B33Y10/00

CPC分类号： C22C38/50 ,  B33Y70/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  B22F2201/11 ,  B22F2301/35 ,  B33Y10/00

摘要： Exemplary alloys may comprise, by weight percentage, 13.25% to 14.75% chromium; 4.5% to 5.5% nickel; 0.11% to 0.17% carbon; 0.01% to 0.31% titanium; and the balance of weight percent comprising iron and incidental elements and impurities. Exemplary methods may include conducting additive manufacturing with an atomized alloy powder to generate a manufactured article, where the atomized alloy powder may comprise, by weight percentage, 13.25% to 14.75% chromium; 4.5% to 5.5% nickel; 0.11% to 0.17% carbon; 0.01% to 0.31% titanium; and the balance of weight percent comprising iron and incidental elements and impurities.

公开(公告)号：US20240275217A1

公开(公告)日：2024-08-15

申请号：US18440296

申请日：2024-02-13

申请人： Vacuumschmelze GmbH & Co KG

发明人： Philipp LINK

IPC分类号： H02K1/02 ,  B32B7/14 ,  B32B15/04 ,  B32B15/18 ,  B32B37/12 ,  B32B37/18 ,  B32B38/00 ,  B32B38/04 ,  B32B38/14 ,  C22C19/07 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/10 ,  C22C38/12 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/30 ,  C22C38/32 ,  C22C38/34 ,  C22C38/38 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/52 ,  C22C38/54 ,  C22C38/58 ,  H01F1/147 ,  H02K15/02

CPC分类号： H02K1/02 ,  B32B7/14 ,  B32B15/043 ,  B32B15/18 ,  B32B37/1292 ,  B32B37/18 ,  B32B38/0004 ,  B32B38/04 ,  B32B38/14 ,  C22C19/07 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/10 ,  C22C38/105 ,  C22C38/12 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/30 ,  C22C38/32 ,  C22C38/34 ,  C22C38/38 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/52 ,  C22C38/54 ,  C22C38/58 ,  H01F1/147 ,  H02K15/02 ,  B32B2038/0076 ,  B32B2038/042 ,  B32B2250/05 ,  B32B2255/06 ,  B32B2255/26 ,  B32B2305/72 ,  B32B2305/74 ,  B32B2307/206 ,  B32B2307/208 ,  B32B2309/02 ,  B32B2309/105 ,  B32B2309/12 ,  B32B2310/0825 ,  B32B2311/22 ,  B32B2311/30 ,  B32B2457/00 ,  C22C2202/02

摘要： A method for the production of a laminated core is provided. A plurality of laminations are provided that are made of a soft-magnetic CoFe alloy and that have a first main surface and a second main surface that is located opposite the first main surface. An adhesive is applied to the first main surface of a first of the laminations by means of a printing process. The adhesive is then transferred to a partially cured B-stage. A second main surface of a second of the laminations is stacked on the B-stage adhesive, which is located on the first main surface of the first lamination, thereby forming a stack of loose laminations. The stack or the adhesive in the stack is cured, the adhesive thus being transferred to the fully cured C-stage in order to bond the first and second laminations to one another and so produce the laminated core.

公开(公告)号：US20240269734A1

公开(公告)日：2024-08-15

申请号：US18568741

申请日：2022-05-25

申请人： Primetals Technologies Austria GmbH

发明人： Kerstin BAUMGARTNER ,  Simon GROSSEIBER ,  Thomas LENGAUER ,  Gero SCHWARZ

IPC分类号： B22D11/00 ,  B22D11/124 ,  B22D11/22 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50

CPC分类号： B22D11/001 ,  B22D11/124 ,  B22D11/225 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50

摘要： A process that produces a microalloyed steel in an integrated casting-rolling plant having a continuous casting machine with a mold, a single- or multi-stand prerolling train, a finish-rolling train having a first stand group with at least one first finish-rolling stand and a second stand group having at least one stand cooler. A metallic melt is cast in the mold to obtain a partly solidified thin-slab strand, which is supported, deflected and cooled. The solidified thin-slab strand is rolled by the prerolling train to obtain a prerolled strip that is finish-rolled in the first stand group to obtain the finish-rolled strip, which is fed to the second stand group and force-cooled in the second stand group, the finish-rolled strip having a thickness that results in a cooling rate of the core of the finish-rolled strip in the second stand group greater than 20° C./s and less than 200° C./s.