-
公开(公告)号：US12123069B2
公开(公告)日：2024-10-22
申请号：US17286148
申请日：2019-10-16
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：US12110568B2
公开(公告)日：2024-10-08
申请号：US17434255
申请日：2020-02-28
发明人： Yoichiro Matsui , Yuka Miyamoto , Takeshi Yokota
IPC分类号： C21D9/46 , C21D6/00 , C21D8/02 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/54
CPC分类号： C21D9/46 , C21D6/004 , C21D6/005 , C21D6/008 , C21D8/0205 , C21D8/0226 , C21D8/0263 , C22C38/001 , C22C38/002 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/54 , C21D2211/004 , C21D2211/005
摘要： A steel sheet and a member excellent in cold workability, hardenability, and post-quenching surface layer hardness, and methods for manufacturing the steel sheet and the member. The steel sheet has a specified chemical composition and a microstructure containing ferrite and carbides, a ratio of the volume of ferrite and carbides to the volume of the entire microstructure is 90% or more, a ratio of the volume of proeutectoid ferrite to the volume of the entire microstructure is 20% or more and 80% or less, a Mn concentration in the carbides is 0.10 mass % or more and 0.50 mass % or less, and a ratio of the number of carbides with particle diameters of 1 μm or more to the total number of carbides is 30% or more and 60% or less.
-
公开(公告)号：US12110566B2
公开(公告)日：2024-10-08
申请号：US17913106
申请日：2021-03-10
申请人： MOTP LLC
发明人： Michio Shimotomai
IPC分类号： C21D9/00 , C21D6/00 , C21D8/02 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/34 , C22C38/38
CPC分类号： C21D9/0081 , C21D6/004 , C21D6/005 , C21D6/008 , C21D8/0205 , C21D8/0226 , C21D8/0236 , C21D8/0263 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/34 , C22C38/38 , C21D2211/002 , C21D2211/004 , C21D2211/008 , C22C2202/04
摘要： To provide a steel and a manufacturing method thereof that can contribute to achieving both high strength and hydrogen embrittlement resistance. The steel has a chemical composition represented by: C: 0.15% to 0.35%; Si: 0.8% to 2.5%; Mn: 0.8% to 2.5%; Al: 0.03% to 2.0%; N: 0.002% to 0.010%; P: 0.01% or less; S: 0.01% or less; O: 0.01% or less; B: 0.0001% to 0.005%; Nb: 0.0% to 0.05%; Ti: 0.0% to 0.2%; V 0.0% to 0.05%; Mo: 0.0% to 1.0%; Cr: 0.0% to 1.0%; Ni: 0.01% to 1.0%; Cu: 0.05% to 1.0%; at least one of Ca, Mg and REM: 0.0005% to 0.01%; and the balance: Fe and impurities, and has a martensite phase or/and a bainite phase in which ε-carbide is dispersedly precipitated.
-
4.发明公开公开(公告)号：US20240327941A1
公开(公告)日：2024-10-03
申请号：US18251034
申请日：2021-09-01
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：US20240271262A1
公开(公告)日：2024-08-15
申请号：US18681571
申请日：2022-08-19
发明人： Yusuke MIYAKOSHI
IPC分类号： C22C38/60 , C21D1/32 , C21D6/00 , C21D8/06 , C21D9/52 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/44
CPC分类号： C22C38/60 , C21D1/32 , C21D6/002 , C21D6/004 , C21D6/005 , C21D6/008 , C21D8/065 , C21D9/525 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/44
摘要： A steel material contains, in mass %, C: 0.30 to 0.50%, Si: 0.40% or less, Mn: 0.10 to 0.60%, P: 0.030% or less, S: 0.030% or less, Cr: 0.90 to 1.80%, Mo: 0.30 to 1.00%, Al: 0.005 to 0.100%, and N: 0.003 to 0.030%, with the balance comprising Fe and impurities. When a Cr concentration in an extraction residue obtained by electrolyzing and removing a region from a surface of the steel material to a depth position of 100±20 μm by performing a preliminary constant current electrolysis and thereafter further electrolyzing a region from a surface of the steel material to a depth position of 100±20 μm by performing a main constant current electrolysis is defined as “[Cr]” (mass %), and a Mo concentration in the extraction residue is defined as “[Mo]” (mass %), the steel material satisfies Formula (1).
10.
≤
[
Cr
]
+
[
Mo
]
≤
30.
(
1
)-
公开(公告)号：US12054798B2
公开(公告)日：2024-08-06
申请号：US17265614
申请日：2019-10-16
发明人： Yuji Arai , Shinji Yoshida , Hiroki Kamitani , Yohei Otome
CPC分类号： C21D8/105 , C21D6/004 , C21D6/005 , C21D6/007 , C21D6/008 , C21D9/085 , C22C38/001 , C22C38/44 , C22C38/46 , C22C38/54
摘要： The steel material according to the present disclosure has a chemical composition consisting of, in mass %, C: 0.15 to 0.45%, Si: 0.05 to 1.00%, Mn: 0.01 to 1.00%, P: 0.030% or less, S: 0.0050% or less, Al: 0.005 to 0.100%, Cr 0.60 to 1.80%, Mo: 0.80 to 2.30%, Ti: 0.002 to 0.020%, V: 0.05 to 0.30%, Nb: 0.002 to 0.100%, B: 0.0005 to 0.0040%, Cu: 0.01 to 0.50%, Ni: 0.01 to 0.50%, N: 0.0020 to 0.0100% and O: 0.0020% or less, with the balance being Fe and impurities. The number density of BN in the steel material is 10 to 100 particles/100 μm2. The yield strength of the steel material is 758 MPa or more.
-
7.发明公开公开(公告)号：US20240254586A1
公开(公告)日：2024-08-01
申请号：US18625591
申请日：2024-04-03
申请人： ArcelorMittal
IPC分类号： C21D9/48 , B32B15/01 , C21D1/673 , C21D6/00 , C21D8/02 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/44 , C22C38/48 , C22C38/50 , C22C38/54 , C23C2/02 , C23C2/06 , C23C2/12 , C23C2/28 , C23C2/40
CPC分类号： C21D9/48 , B32B15/012 , B32B15/013 , C21D1/673 , C21D6/004 , C21D6/005 , C21D6/008 , C21D8/0205 , C21D8/0226 , C21D8/0236 , C21D8/0263 , C22C38/001 , C22C38/004 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/44 , C22C38/48 , C22C38/50 , C22C38/54 , C23C2/02 , C23C2/022 , C23C2/024 , C23C2/06 , C23C2/12 , C23C2/28 , C23C2/40 , C21D2211/002 , C21D2211/008
摘要： A method for manufacture of a hot-rolled steel sheet which includes: producing a liquid steel to which manganese, silicon, niobium, and chromium are added, the additions being made in a vacuum chamber, then desulfurizing the liquid metal without increasing its nitrogen content, then adding titanium, said additions being made so as to obtain a liquid metal having a chemical composition where the titanium and nitrogen contents satisfy: Ti/N>3.42, and the carbon, manganese, chromium, and silicon contents satisfy: 2.6C+Mn/5.3+Cr/13+Si/15>=1.1%, then casting a semi-finished product, then heating said semi-finished product to a temperature between 1250° C. and 1300° C. for a holding period at this temperature between 20 minutes and 45 minutes, then hot rolling said semi-finished product to a rolling end temperature TFL between 825° C. and 950° C., to obtain a hot-rolled sheet, then coiling said hot-rolled sheet at a temperature between 500° C. and 750° C. to obtain a hot-rolled and coiled sheet, then pickling the oxide layer formed in the previous steps.
-
公开(公告)号：US20240229179A1
公开(公告)日：2024-07-11
申请号：US18008926
申请日：2022-09-08
发明人： Patrik ALOISI , Wilhelm WEINMEISTER
IPC分类号： C21D9/00 , C21D1/18 , C21D6/00 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/44 , C22C38/46 , C22C38/50 , C22C38/54 , C22C38/58
CPC分类号： C21D9/0068 , C21D1/18 , C21D6/00 , C21D6/004 , C21D6/005 , C21D6/008 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/44 , C22C38/46 , C22C38/50 , C22C38/54 , C22C38/58 , C21D2211/001
摘要： The invention relates to a method for producing a hardened sheet steel component, wherein sheet steel sheet bars are cut from a coil made of a hardenable steel alloy or steel strip, formed into sheet steel component blanks in a cold forming process, and the blanks are heated in a continuous furnace to a temperature above the austenitization temperature required for the hardening and pressed and quench hardened in a form hardening tool. The blanks have point-shaped or linear beads, raised bumps, or flanges whose free ends or partial lengths are bent relative to the contact element so that the blanks rest on the contact element using only the point-shaped or linear beads, raised bumps, or free ends or partial lengths of the flanges. During form hardening, the beads, bumps or bends are pressed or deformed into the desired geometry of the finished component.
-
公开(公告)号：US20240182994A1
公开(公告)日：2024-06-06
申请号：US18526078
申请日：2023-12-01
申请人： SINTOKOGIO, LTD.
发明人： Yuta Saito , Atsuki Kurokawa , Kan Aoki
IPC分类号： C21D8/00 , C21D1/18 , C21D6/00 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/42 , C22C38/44 , C22C38/46
CPC分类号： C21D8/005 , C21D1/18 , C21D6/004 , C21D6/005 , C21D6/008 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/42 , C22C38/44 , C22C38/46 , C21D2201/00 , C21D2211/001
摘要： The manufacturing method of the reference piece for measuring retained austenite includes performing quenching and tempering a metal member after performing nano-crystallization on at least a portion of a surface of the metal member.
-
公开(公告)号：US12000006B2
公开(公告)日：2024-06-04
申请号：US17248953
申请日：2021-02-15
申请人： MACLEAN-FOGG COMPANY
发明人： Charles D. Tuffile , Harald Lemke
IPC分类号： C21D8/02 , B22F10/00 , B22F10/20 , B22F10/28 , B22F10/32 , B22F10/36 , B22F12/17 , B23K26/00 , B33Y10/00 , B33Y40/00 , B33Y70/00 , C21D1/18 , C21D1/613 , C21D6/00 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/20 , C22C38/22 , C22C38/26 , C22C38/40 , C22C38/42 , C22C38/44 , C22C38/48 , C23C8/22 , C23C8/54 , B22F1/05 , B22F3/24 , B22F9/08 , C22C33/02
CPC分类号： C21D1/18 , B22F10/00 , B22F10/20 , B22F10/28 , B22F10/32 , B22F10/36 , B22F12/17 , B23K26/0006 , B33Y10/00 , B33Y40/00 , B33Y70/00 , C21D1/613 , C21D6/002 , C21D6/004 , C21D6/005 , C21D6/008 , C21D8/0257 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/20 , C22C38/22 , C22C38/26 , C22C38/40 , C22C38/42 , C22C38/44 , C22C38/48 , C23C8/22 , C23C8/54 , B22F1/05 , B22F2003/241 , B22F2003/248 , B22F9/082 , B22F2201/02 , B22F2201/30 , B22F2998/10 , B22F2999/00 , C22C33/0278 , Y02P10/25
摘要： Alloy compositions for 3D metal printing procedures which provide metallic parts with high hardness, tensile strengths, yield strengths, and elongation. The alloys include Fe, Cr and Mo and at least three or more elements selected from C, Ni, Cu, Nb, Si and N. As built parts indicate a tensile strength of at least 1000 MPa, yield strength of at least 640 MPa, elongation of at least 3.0% and hardness (HV) of at least 375.
-
-
-
-
-
-
-
-
-
搜索结果
1342 条记录 (耗时 0.024 秒)
