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公开(公告)号：US11643700B2
公开(公告)日：2023-05-09
申请号：US17043514
申请日：2019-03-20
发明人： Yoshiyasu Kawasaki , Kazuki Endo , Yuki Toji , Yoshimasa Funakawa , Satoshi Maeda , Mai Aoyama
IPC分类号： C21D9/46 , B32B15/00 , C21D6/00 , C21D8/00 , C22C38/00 , B32B15/01 , C21D8/02 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/54 , C23C2/02 , C23C2/06 , C23C2/28 , C23C2/40
CPC分类号： C21D9/46 , B32B15/013 , C21D6/004 , C21D6/005 , C21D6/008 , C21D8/0205 , C21D8/0226 , C21D8/0236 , C21D8/0263 , 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 , C23C2/02 , C23C2/06 , C23C2/28 , C23C2/40 , C21D2211/001 , C21D2211/003 , C21D2211/005 , C21D2211/008
摘要： A high-strength steel includes a steel structure with: in area fraction, 60.0% to less than 90.0% of ferrite, 0% to less than 5.0% of unrecrystallized ferrite, 2.0% to 25.0% of martensite, 0% to 5.0% of carbide, and 0% to 3.0% of bainite; in volume fraction, more than 7.0% of retained austenite; in a cross-sectional view of 100 μm×100 μm, a value obtained by dividing number of retained austenite that are not adjacent to retained austenite whose crystal orientations are different by a total number of retained austenite being less than 0.80, an average crystal grain size of the ferrite being 6.0 μm or less, an average crystal grain size of the retained austenite being 3.0 μm or less, and a value obtained by dividing, by mass %, an average content of Mn in the retained austenite by an average content of Mn in steel being 1.50 or more.
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42.发明申请公开(公告)号：US20190247902A1
公开(公告)日：2019-08-15
申请号：US16342015
申请日：2017-10-18
IPC分类号： B21B45/08 , C22C38/60 , C22C38/40 , C22C38/34 , C22C38/16 , C22C38/14 , C22C38/12 , C22C38/06 , C22C38/04 , C22C38/00 , C21D9/46 , C21D8/12 , C21D8/00 , C21D6/00
CPC分类号： B21B45/08 , C21D6/004 , C21D6/005 , C21D6/008 , C21D8/005 , C21D8/12 , C21D8/1222 , C21D9/46 , C22C38/00 , C22C38/001 , C22C38/002 , C22C38/008 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/34 , C22C38/40 , C22C38/60
摘要： With a hot-rolled steel sheet for electrical steel sheet production having a scale layer on the surface, where the surface of the steel sheet has a lightness L* as defined in JIS Z 8781-4: 2013 satisfying 30≤L*≤50, and chromaticities a* and b* as defined in JIS Z 8781-4: 2013 satisfying −1≤a*≤2 and −5≤b*≤3 respectively, and with one end portion in the longitudinal direction of a coil as a reference, a color difference ΔEab* as defined in JIS Z 8781-4: 2013 at the central portion and at the opposite end portion satisfies ΔEab*≤8, it is possible to obtain a grain-oriented electrical steel sheet where the variation of properties in a product coil is small.
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公开(公告)号：US20190218639A1
公开(公告)日：2019-07-18
申请号：US16302992
申请日：2017-05-23
申请人： ARCELORMITTAL
IPC分类号： C21D9/46 , C22C38/58 , C22C38/46 , C22C38/44 , C22C38/42 , C22C38/28 , C22C38/06 , C22C38/02 , C22C38/00 , C21D8/02 , C21D6/00 , C23C2/02 , C23C2/06 , C23C2/12 , C23C2/40 , B32B15/01
CPC分类号： C21D9/46 , B32B15/012 , B32B15/013 , C21D6/001 , C21D6/004 , C21D6/005 , C21D6/008 , C21D8/0205 , C21D8/0236 , C21D8/0268 , C21D8/0468 , C21D2211/001 , C21D2211/004 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/28 , C22C38/32 , C22C38/34 , C22C38/38 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/58 , C23C2/02 , C23C2/06 , C23C2/12 , C23C2/40 , C23C28/021 , C23C28/023 , C23C28/025
摘要： A cold rolled and recovered TWIP steel sheet is provided having an austenitic matrix including by weight: 0.71
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公开(公告)号：US20190211430A1
公开(公告)日：2019-07-11
申请号：US16309202
申请日：2017-06-06
发明人： Sota Goto , Hiroshi Nakata , Junji Shimamura
IPC分类号： C22C38/58 , C22C38/50 , C22C38/48 , C22C38/44 , C22C38/42 , C22C38/32 , C22C38/24 , C22C38/28 , C22C38/26 , C22C38/14 , C22C38/12 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/00 , C22C38/38 , C21D9/08 , C21D8/10 , C21D6/00
CPC分类号： C22C38/58 , C21D6/002 , C21D6/004 , C21D6/005 , C21D6/008 , C21D8/0226 , C21D8/0263 , C21D8/105 , C21D9/08 , C21D9/085 , C21D9/46 , C21D2211/002 , C21D2211/005 , C21D2211/008 , C21D2211/009 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/38 , C22C38/42 , C22C38/44 , C22C38/48 , C22C38/50 , F16L1/123
摘要： A hot-rolled steel sheet for a heavy-wall, high-strength line pipe, the steel sheet having a chemical composition including, in mass %, C: 0.02 to 0.20%, Mn: 0.80 to 2.10%, Si: 0.01 to 0.50%, P: 0.034% or less, S: 0.0050% or less, Nb: 0.01 to 0.15%, Ti: 0.001 to 0.030%, and Al: 0.001 to 0.080%, the balance being Fe and incidental impurities, the steel sheet having a microstructure in which a main phase is a continuous cooling transformation structure and in which {001}α grains in a plane whose normal direction is the sheet width direction constitute an area fraction of 10% or less and have a combined size of 10 μm or less, wherein the steel sheet has a tensile strength of 520 MPa or greater, and, in a drop weight tear test, a temperature at which a percent ductile fracture reaches 85% is −25° C. or lower.
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45.发明申请公开(公告)号：US20190201972A1
公开(公告)日：2019-07-04
申请号：US16304578
申请日：2017-05-25
CPC分类号： B22F1/0085 , B22F3/04 , B22F3/10 , B22F3/15 , B22F3/225 , B22F5/009 , B22F9/082 , B22F2301/35 , B22F2998/10 , B22F2999/00 , C21D1/18 , C21D6/004 , C21D6/02 , C22C19/055 , C22C19/056 , C22C30/00 , C22C30/02 , C22C38/004 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/42 , C22C38/44 , C22C38/48 , C22C38/50 , C22C38/52 , F01D5/28 , F04D29/02 , F05D2300/17 , C22C38/00 , B22F3/02
摘要： Turbomachines, as well as their components, are disclosed being in the field of production and treatment of oil and gas containing e.g. hydrocarbon plus hydrogen sulfide, carbon dioxide, with or without other contaminants. The components are made of a high corrosion high temperature resistant alloy, capable of resisting to corrosion and/or stress at high temperature better than state of art martensitic stainless steels and behaving similarly to premium nickel base superalloys, and at the same time showing a very improved hardness value.
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公开(公告)号：US20180327877A1
公开(公告)日：2018-11-15
申请号：US15800500
申请日：2017-11-01
发明人： Jae-Woong CHOI , Won-Seok YANG
IPC分类号： C21D8/00 , C22C38/48 , C22C38/42 , C22C38/04 , C22C38/02 , C22C38/00 , C22C21/02 , C21D6/00 , C23G1/08 , C23C18/48 , C23C18/16 , B32B15/01
CPC分类号： C21D8/005 , B32B15/012 , C21D6/004 , C21D6/005 , C21D6/008 , C21D2211/005 , C22C21/02 , C22C38/002 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/42 , C22C38/48 , C23C18/1637 , C23C18/1692 , C23C18/48 , C23G1/08
摘要： A low-alloy and corrosion-resistant steel for a vehicle, may include about 0.001 wt % to about 0.1 wt % of C, about 0.01 wt % to about 0.5 wt % of Si, about 0.1 wt % to about 0.6 wt % of Mn, more than 0 wt % and about 0.18 wt % or less of P, more than 0 wt % and less than about 0.02 wt % of S, about 0.001 wt % to about 0.03 wt % of Nb, more than 0 wt % and about 0.03 wt % or less of Cr, about 0.05 wt % to about 0.3 wt % of Cu, about 0.05 wt % to about 0.2 wt % of Ni, and more than 0 wt % and about 0.2 wt % or less of a combined weight of Sn and Sb, and the balance iron and inevitable impurities.
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47.发明申请公开(公告)号：US20180320243A1
公开(公告)日：2018-11-08
申请号：US15774608
申请日：2016-10-19
发明人： Hiroki KAMITANI , Taro OE
IPC分类号： C21D9/08 , C21D8/10 , C21D6/00 , C22C38/54 , C22C38/50 , C22C38/46 , C22C38/44 , C22C38/42 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/00
CPC分类号： C21D9/08 , C21D1/19 , C21D1/25 , C21D6/004 , C21D6/008 , C21D8/10 , C21D8/105 , C21D2211/001 , C21D2211/005 , C21D2211/008 , C22C38/00 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/50 , C22C38/54
摘要： A method of manufacturing a stainless steel pipe includes preparing a hollow shell having a composition (mass %): up to 0.05% C; up to 1.0% Si; 0.01 to 1.0% Mn; up to 0.05% P; below 0.002% S; 0.001 to 0.1% Al; 16.0 to 18.0% Cr; 3.0 to 5.5% Ni; 1.8 to 3.0% Mo; 1.0 to 3.5% Cu; up to 0.05% N; up to 0.05% O; 0 to 0.3% Ti; 0 to 0.3% Nb; 0 to 0.3% V; 0 to 2.0% W; 0 to 0.01% Ca; 0 to 0.01% B; the balance Fe and impurities, holding the shell in a temperature range of 420 to 460° C. for 60 to 180 minutes; and then holding the shell in a temperature range of 550 to 600° C. for 5 to 300 minutes.
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公开(公告)号：US20180305797A1
公开(公告)日：2018-10-25
申请号：US15764013
申请日：2016-09-20
发明人： Tetsuyuki Nakamura , Shin Ishikawa , Chikara Kami
IPC分类号： C22C38/54 , C22C38/52 , C22C38/50 , C22C38/48 , C22C38/46 , C22C38/44 , C22C38/42 , C22C38/06 , C22C38/02 , C22C38/04 , C22C38/00 , C21D9/46 , C21D8/02 , C21D6/00
CPC分类号： C22C38/54 , C21D6/004 , C21D6/005 , C21D6/008 , C21D8/0205 , C21D8/0226 , C21D8/0236 , C21D8/0263 , C21D8/0273 , C21D9/46 , C21D2211/005 , C22C38/00 , C22C38/001 , C22C38/002 , C22C38/004 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/34 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/52 , C22C38/58
摘要： Provided is a ferritic stainless steel excellent in oxidation resistance and thermal fatigue resistance.The ferritic stainless steel contains, in mass %, C: 0.020% or less, Si: more than 0.1% and 3.0% or less, Mn: 0.05 to 2.0%, P: 0.050% or less, S: 0.010% or less, Al: 0.3 to 6.0%, N: 0.020% or less, Cr: 12 to 30%, Nb: more than 0.3% and 1.0% or less, Ti: 0.01 to 0.5%, Mo: 0.3 to 6.0%, Co: 0.01 to 3.0%, and Ni: 0.02 to 1.0%, the balance being Fe and unavoidable impurities. Moreover, Si+Al>1.0%, Al—Mn>0%, and Nb—Ti>0% hold.
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公开(公告)号：US20180305779A1
公开(公告)日：2018-10-25
申请号：US16021890
申请日：2018-06-28
申请人： JTEKT CORPORATION
CPC分类号： C21D1/667 , C21D1/42 , C21D6/004 , C21D6/005 , C21D6/008 , C22C38/00 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/44 , H05B6/101 , Y02P10/253
摘要： A heat treatment apparatus that thermally treats an annular workpiece formed of a steel material by inductively heating the workpiece includes a treatment tank in which the workpiece is set and thermally treated, a holding portion that holds the workpiece at a predetermined position, an induction heating coil that surrounds the workpiece to inductively heat the workpiece, and a cooling medium that cools surfaces of the workpiece during the induction heating of the workpiece.
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公开(公告)号：US20180274050A1
公开(公告)日：2018-09-27
申请号：US15523036
申请日：2015-10-23
申请人： DRESSER-RAND COMPANY
发明人： Byron Mohr , Steven Nove
IPC分类号： C21D6/00 , C22C38/52 , C22C38/46 , C22C38/44 , C22C38/04 , C22C38/02 , C22C38/00 , C22C38/42
CPC分类号： C21D6/004 , C21D2211/008 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/52
摘要： A metal article including an at least partially heat treated metal composition, and a method for treating the metal article are provided. The method for treating the metal article may include heating the metal article to a first holding temperature of about 690° C., and holding the metal article at the first holding temperature for at least about 10 hours. The method may also include cooling the metal article from the first holding temperature to a first cooling temperature of about 65° C. or less. The method may further include heating the metal article to a second holding temperature of about 615° C., and holding the metal article at the second holding temperature for at least about 10 hours. The method may also include cooling the metal article from the second holding temperature to a second cooling temperature of about 65° C. or less.
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