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公开(公告)号：US11884989B2
公开(公告)日：2024-01-30
申请号：US17599935
申请日：2020-05-13
发明人： Daisuke Maeda , Yuri Toda , Tomohito Tanaka , Kazuo Hikida
IPC分类号： B32B15/01 , C21D9/48 , C21D1/18 , C21D6/00 , C21D8/04 , C22C18/00 , C22C38/00 , C22C38/02 , C22C38/06 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/38
CPC分类号： C21D9/48 , B32B15/013 , C21D1/18 , C21D6/002 , C21D6/005 , C21D6/008 , C21D8/0405 , C21D8/0426 , C21D8/0436 , C21D8/0463 , C22C18/00 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/06 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/38 , C21D2211/001 , C21D2211/008
摘要： A hot-stamping formed body includes: a steel sheet having a predetermined chemical composition; and a plating layer provided on a surface of the steel sheet, the plating layer having an adhesion amount of 10 g/m2 to 90 g/m2 and a Ni content of 10 mass % to 25 mass %, and containing a remainder consisting of Zn and impurities. The hot-stamping formed body includes, in a surface layer region of the steel sheet, an average grain size of prior austenite grains to 10.0 μm or less, a Ni concentration per unit area at grain boundaries having an average crystal orientation difference of 15° or more is 1.5 mass %/μm2 or more.
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公开(公告)号：US20180257122A1
公开(公告)日：2018-09-13
申请号：US15759185
申请日：2016-01-14
发明人： Byung Gil Yoo , Seung Ha Lee , Hyeong-Hyeop Do , Chee Woong Song
CPC分类号： B21B3/00 , B21D22/20 , B21D22/208 , B21D37/16 , B21D53/88 , C21D8/04 , C21D8/0426 , C21D8/0436 , C21D8/0473 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/38
摘要： A method for producing a molded article includes the steps of: preparing a first steel plate and a second steel plate. The first steel plate and the second steel plate are joined to each other, thereby preparing a joined steel plate. The joined steel plate is heated at a temperature between 910° C. and 950° C. The heated joined steel plate is then subjected to hot-press molding, thereby preparing an intermediate molded article; and cooling the intermediate molded article, wherein the first steel plate has a tensile strength (TS) higher than that of the second steel plate.
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公开(公告)号：US20180223399A1
公开(公告)日：2018-08-09
申请号：US15749732
申请日：2016-08-03
发明人： PETER PALZER , THOMAS EVERTZ
CPC分类号： C22C38/04 , C21D1/26 , C21D6/005 , C21D8/0226 , C21D8/0231 , C21D8/0236 , C21D8/0426 , C21D8/0431 , C21D8/0436 , C21D9/46 , C21D2211/001 , C21D2211/002 , C21D2211/004 , C21D2211/005 , C21D2211/008 , C21D2211/009 , C22C33/006 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/06 , C22C38/18 , C22C38/20 , C22C38/22 , C22C38/40 , C22C38/42 , C22C38/44 , C22C2202/00 , C23C2/02 , C23C2/06
摘要： A high-strength, manganese-containing steel, in particular for producing a flexibly rolled flat steel product in the form of a hot or cold strip, includes the following chemical composition (in wt. %): C: 0.005 to 0.6; Mn: 4 to 10; Al: 0.005 to 4; Si: 0.005 to 2; P: 0.001 to 0.2; S: up to 0.05; N: 0.001 to 0.3; with the remainder being iron including unavoidable steel-associated elements, with optional alloying of one or more of the following elements (in wt. %): Sn: 0 to 0.5; Ni: 0 to 2; Cu: 0.005 to 3; Cr: 0.1 to 4; V: 0.005 to 0.9; Nb: 0.005 to 0.9; Ti: 0.005 to 0.9; Mo: 0.01 to 3; W: 0.1 to 3; Co: 0.1 to 3; B: 0.0001 to 0.05; Zr: 0.005 to 0.5; Ca: 0.0002 to 0.1 which has a good combination of strength, expansion and deformation properties.
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公开(公告)号：US09988697B2
公开(公告)日：2018-06-05
申请号：US14110896
申请日：2012-04-12
申请人： Yoshihiro Suwa , Kazuaki Nakano , Kunio Hayashi , Riki Okamoto , Nobuhiro Fujita , Kohichi Sano
发明人： Yoshihiro Suwa , Kazuaki Nakano , Kunio Hayashi , Riki Okamoto , Nobuhiro Fujita , Kohichi Sano
IPC分类号： C21D8/02 , C22C38/02 , C21D9/46 , C22C38/00 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14 , C21D8/04 , B32B15/01 , C22C38/08 , C22C38/10 , C22C38/16 , C22C38/26 , C22C38/28 , C22C38/38 , C22C38/22 , C23C2/06 , C23C2/28 , C23C2/36
CPC分类号： C21D9/46 , B32B15/013 , C21D8/02 , C21D8/0205 , C21D8/0226 , C21D8/0236 , C21D8/0263 , C21D8/0426 , C21D8/0436 , C21D8/0473 , C21D2201/05 , C21D2211/001 , C21D2211/002 , C21D2211/005 , C21D2211/008 , C21D2211/009 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/10 , C22C38/105 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/22 , C22C38/26 , C22C38/28 , C22C38/38 , C23C2/06 , C23C2/285 , C23C2/36 , Y10T428/12799
摘要： This high-strength hot-rolled steel sheet having excellent local deformability contains, in mass %, C: 0.07% to 0.20%; Si: 0.001% to 2.5%; Mn: 0.01% to 4.0%; P: 0.001% to 0.15%; S: 0.0005% to 0.03%; Al: 0.001% to 2.0%; N: 0.0005% to 0.01%; and O: 0.0005% to 0.01%; and a balance being composed of iron and inevitable impurities, in which an area ratio of bainite in a metal structure is 95% or more, at a sheet thickness center portion being a range of ⅝ to ⅜ in sheet thickness from the surface of the steel sheet, an average value of pole densities of the {100} to {223} orientation group is 4.0 or less, and a pole density of the {332} crystal orientation is 5.0 or less, and a mean volume diameter of crystal grains in the metal structure is 10 μm or less.
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公开(公告)号：US09938599B2
公开(公告)日：2018-04-10
申请号：US14008169
申请日：2012-03-28
申请人： Keiji Ueda , Nobuyuki Ishikawa
发明人： Keiji Ueda , Nobuyuki Ishikawa
IPC分类号： C21D8/02 , C22C38/02 , C22C38/50 , C22C38/00 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/18 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/40 , C21D8/04 , C21D1/25
CPC分类号： C21D8/0263 , C21D1/25 , C21D8/0426 , C21D8/0463 , C21D8/0473 , C21D2211/008 , C22C38/00 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/18 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/40 , C22C38/50
摘要： An abrasion resistant steel plate or steel sheet suitable for use in construction machines, industrial machines, and the like and a method for manufacturing the same. In particular, a steel plate or steel sheet has a composition containing 0.20% to 0.30% C, 0.05% to 1.0% Si, 0.40% to 1.20% Mn, P, S, 0.1% or less Al, 0.01% or less N, and 0.0003% to 0.0030% B on a mass basis, the composition further containing one or more of Cr, Mo, and W, the composition further containing one or more of Nb, Ti, Cu, Ni, V, an REM, Ca, and Mg as required, the remainder being Fe and inevitable impurities. A semi-finished product having the above steel composition is heated, hot rolling is performed, air cooling is performed, reheating is performed, and accelerated cooling is then performed or accelerated cooling is performed immediately after hot rolling.
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公开(公告)号：US09903023B2
公开(公告)日：2018-02-27
申请号：US14430410
申请日：2013-09-26
IPC分类号： C22C38/02 , C22C38/06 , C22C38/12 , C22C38/14 , C21D9/46 , C21D8/02 , C23C30/00 , C22C38/00 , C22C38/04 , B32B15/01 , C21D6/00 , C22C38/08 , C22C38/16 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/38 , C21D8/04 , C23C2/02 , C23C2/06 , C23C2/28
CPC分类号： C23C30/005 , B32B15/01 , C21D6/001 , C21D6/002 , C21D6/005 , C21D6/008 , C21D8/0221 , C21D8/0263 , C21D8/0278 , C21D8/0426 , C21D8/0463 , C21D9/46 , C21D2211/001 , C21D2211/004 , C21D2211/005 , C21D2211/008 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/38 , C23C2/02 , C23C2/06 , C23C2/28 , Y10T428/12972
摘要： A hot rolled steel sheet consisting of, in mass %, C: 0.05% to 0.15%, Si: 0% to 0.2%, Al: 0.5% to 3.0%, Mn: 1.2% to 2.5%, P: 0.1% or less, S: 0.01% or less, N: 0.007% or less, Ti: 0.03% to 0.10%, Nb: 0.008% to 0.06%, V: 0% to 0.12%, one or more of Cr, Cu, Ni, and Mo: 0% to 2.0% in total, B: 0% to 0.005%, one or more of Ca, Mg, La, and Ce: 0% to 0.01% in total, total amount of Si and Al: 0.8×(Mn−1)% or more, total amount of Ti and Nb: 0.04% to 0.14%, and the balance: Fe and impurities. In a structure of steel, a total area ratio of martensite and retained austenite is 3% to 20%, an area ratio of ferrite is 50% to 96%, and an area ratio of pearlite is 3% or less. In a superficial layer part, the thickness in a sheet thickness direction of a region in which a network-like oxide is present is less than 0.5 μm, and a maximum tensile strength is 720 MPa or more.
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公开(公告)号：US20180023160A1
公开(公告)日：2018-01-25
申请号：US15547100
申请日：2016-01-27
IPC分类号： C21D9/46 , C22C38/22 , C22C38/28 , C22C38/24 , C22C38/38 , C22C38/16 , C22C38/14 , C22C38/12 , C22C38/60 , C22C38/08 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/00 , C23C2/06 , C23C2/40 , C23F17/00 , C21D8/02
CPC分类号： C21D9/46 , C21D1/25 , C21D6/001 , C21D6/002 , C21D6/005 , C21D6/008 , C21D8/00 , C21D8/005 , C21D8/02 , C21D8/0205 , C21D8/0221 , C21D8/0226 , C21D8/0236 , C21D8/0247 , C21D8/0278 , C21D8/04 , C21D8/0405 , C21D8/0421 , C21D8/0426 , C21D8/0447 , C21D8/0473 , C21D2211/005 , C21D2211/008 , C22C38/00 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18 , C22C38/22 , C22C38/24 , C22C38/28 , C22C38/38 , C22C38/60 , C23C2/02 , C23C2/06 , C23C2/28 , C23C2/40 , C23F17/00
摘要： A steel sheet has a microstructure that contains ferrite in an area ratio of 20% or more, martensite in an area ratio of 5% or more, and tempered martensite in an area ratio of 5% or more. The ferrite has a mean grain size of 20.0 μm or less. An inverse intensity ratio of γ-fiber to α-fiber in the ferrite is 1.00 or more and an inverse intensity ratio of γ-fiber to α-fiber in the martensite and the tempered martensite is 1.00 or more.
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公开(公告)号：US09657380B2
公开(公告)日：2017-05-23
申请号：US14395929
申请日：2012-04-26
申请人： Noriaki Kosaka , Kazuhiro Seto , Hidetaka Kawabe
发明人： Noriaki Kosaka , Kazuhiro Seto , Hidetaka Kawabe
CPC分类号： C22C38/14 , B32B15/013 , C21D8/0263 , C21D8/04 , C21D8/0426 , C21D8/0463 , C21D9/46 , C21D2211/004 , C21D2211/005 , C22C18/00 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06
摘要： A slab has a steel composition including 0.020% to 0.065% of C, 0.1% or less of Si, 0.40% to less than 0.80% of Mn, 0.030% or less of P, 0.005% or less of S, 0.08% to 0.16% of Ti, 0.005% to 0.1% of Al, 0.005% or less of N, and the balance being Fe and incidental impurities, in which Ti*(=Ti−(48/14)×N) satisfies [Ti*≧0.08] and [0.300≦C/Ti*≦0.375], is subjected to hot rolling to obtain a hot-rolled steel sheet in which the steel microstructure includes, in terms of area fraction, 95% or more of a ferrite phase; the average ferrite grain size is 10 μm or less; the average grain size of Ti carbides precipitated in steel is 10 nm or less; and Ti in the amount of 80% or more of Ti* is precipitated as Ti carbides.
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公开(公告)号：US20170101695A1
公开(公告)日：2017-04-13
申请号：US15312974
申请日：2015-05-07
申请人： ArcelorMittal
IPC分类号： C21D9/48 , C22C38/58 , C22C38/54 , C22C38/50 , C22C38/48 , C22C38/46 , C22C38/44 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/00 , C23C2/02 , C23C2/06 , C23C2/12 , C23F17/00 , C21D8/04
CPC分类号： C21D9/48 , C21D8/0405 , C21D8/0426 , C21D8/0436 , C21D8/0447 , C21D8/0463 , C21D8/0478 , C21D9/46 , C21D2211/001 , C21D2211/002 , C21D2211/008 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/54 , C22C38/58 , C23C2/02 , C23C2/06 , C23C2/12 , C23C2/28 , C23C2/40 , C23F17/00
摘要： The invention relates to a double-annealed steel sheet, the composition of which includes, expressed in per cent by weight, 0.20% ≦C ≦0.40%, 0.8% ≦Mn ≦1.4%, 1.60% ≦Si ≦3.00%, 0.015 ≦Nb ≦0.150%, Al ≦0.1%, Cr ≦1.0%, S ≦0.006%, P ≦0.030%, Ti ≦0.05%, V ≦0.05%, B ≦0.003%, N ≦0.01%, the remainder of the composition being constituted of iron and unavoidable impurities resulting from processing, the microstructure being constituted, in area percentages, of 10 to 30% residual austenite, 30 to 60% annealed martensite, 5 to 30% bainite, 10 to 30% fresh martensite and less than 10% ferrite. The invention further relates to its fabrication method and the use of such sheet.
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公开(公告)号：US09580766B2
公开(公告)日：2017-02-28
申请号：US12600085
申请日：2008-04-29
CPC分类号： C21D9/46 , C21D6/005 , C21D8/021 , C21D8/0215 , C21D8/0226 , C21D8/0236 , C21D8/0247 , C21D8/041 , C21D8/0415 , C21D8/0426 , C21D8/0436 , C21D2211/005 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/14 , C22C38/44 , C22C38/48 , C22C38/50
摘要： The invention relates to a hot-rolled ferritic steel sheet, the composition of the steel of which comprises, the contents being expressed by weight: 0.001≦C≦0.15%, Mn≦1%, Si≦1.5%, 6%≦Al≦10%, 0.020%≦Ti≦0.5%, S≦0.050%, P≦0.1%, and, optionally, one or more elements chosen from: Cr≦1%, Mo≦1%, Ni≦1%, Nb≦0.1%, V≦0.2%, B≦0.010%, the balance of the composition consisting of iron and inevitable impurities resulting from the smelting, the average ferrite grain size dIV measured on a surface perpendicular to the transverse direction with respect to the rolling being less than 100 microns.
摘要翻译： 本发明涉及一种热轧的铁素体钢板，其组成为：其含量以0.001≤C≤0.15％，Mn≤1％，Si≤1.5％，6％≤Al≤ 10％，0.020％≤Ti≤0.5％，S≤0.050％，P≤0.1％，以及任选的一种或多种选自Cr≤1％，Mo≤1％，Ni≤1％，Nb≤0.1的元素 ％，V≤0.2％，B≤0.010％，由冶炼产生的铁和不可避免的杂质组成的组成的平衡，在与横向垂直的表面上测量的相对于轧制的平均铁素体晶粒尺寸dIV较小 超过100微米。
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