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公开(公告)号：US20240153683A1
公开(公告)日：2024-05-09
申请号：US18281193
申请日：2022-03-18
发明人： Tesshu MURAKAWA
IPC分类号： H01F1/147 , C21D6/00 , C21D8/12 , C21D9/46 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/20 , C22C38/30 , C22C38/32 , C22C38/34 , C22C38/40 , C22C38/60
CPC分类号： H01F1/14791 , C21D6/002 , C21D6/004 , C21D6/005 , C21D6/007 , C21D6/008 , C21D8/1233 , C21D8/1266 , C21D9/46 , C22C38/001 , C22C38/002 , C22C38/004 , C22C38/005 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/20 , C22C38/30 , C22C38/32 , C22C38/34 , C22C38/40 , C22C38/60 , C22C2202/02
摘要： This non-oriented electrical steel sheet has a predetermined chemical composition, when EBSD observation is performed on a surface parallel to a steel sheet surface, in a case where a total area is indicated by Stot, an area of {411} orientated grains is indicated by S411, an area of orientated grains in which a Taylor factor M becomes more than 2.8 is indicated by Styl, a total area of orientated grains in which the Taylor factor M becomes 2.8 or less is indicated by Stra, an average KAM value of the {411} orientated grains is indicated by K411, and an average KAM value of the orientated grains in which the Taylor factor M becomes more than 2.8 is indicated by Ktyl, 0.20≤Styl/Stot≤0.85, 0.05≤S411/Stot≤0.80, S411/Stra≥0.50, and K411/Ktyl≤0.990 are satisfied.
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公开(公告)号：US20230326637A1
公开(公告)日：2023-10-12
申请号：US18209532
申请日：2023-06-14
发明人： Brennan YAHATA , Eric CLOUGH , Christopher HENRY , Amber SUCICH , Darby LAPLANT , Tobias SCHAEDLER
IPC分类号： H01F1/055 , C22C38/00 , C22C38/30 , C22C38/08 , C22C38/10 , C22C38/06 , B33Y80/00 , H01F7/02 , H01F1/057 , H01F13/00 , H01F41/02
CPC分类号： H01F1/055 , C22C38/005 , C22C38/30 , C22C38/08 , C22C38/105 , C22C38/06 , B33Y80/00 , H01F7/021 , H01F7/0278 , H01F1/0577 , H01F13/003 , H01F41/0266 , H01F41/0273 , C22C2202/02
摘要： This invention provides methods for fabricating a hard or soft magnet with tailorable magnetic and crystallographic orientations. Methods are disclosed to individually tailor three-dimensional voxels for selected crystallographic orientations and, independently, selected magnetic orientations with location specificity throughout a magnet. Some variations provide a method of making a magnet, comprising: providing a feedstock composition containing magnetic or magnetically susceptible materials; exposing the feedstock composition to an energy source for melting, thereby generating a first melt layer; solidifying the first melt layer in the presence of an externally applied magnetic field, thereby generating a magnetic metal layer containing a plurality of individual voxels; optionally repeating to generate a plurality of solid layers; and recovering a magnet comprising the magnetic metal layer(s), wherein the externally applied magnetic field has a magnetic-field orientation that is selected to control a magnetic axis and a crystallographic texture within the magnetic metal layer(s).
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3.发明公开公开(公告)号：US20230295786A1
公开(公告)日：2023-09-21
申请号：US18001894
申请日：2021-06-02
发明人： Mingxin HUANG , Kaiping YU
CPC分类号： C22C38/38 , C22C38/30 , C22C38/02 , C22C33/04 , C21D9/46 , C21D8/0205 , C21D8/0236
摘要： The present invention provides a non-magnetic stainless steel with high strength and corrosion resistance and a preparation method thereof. The non-magnetic stainless steel composed of the following components according to percentage by weight: 17%
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公开(公告)号：US20230193438A1
公开(公告)日：2023-06-22
申请号：US18017777
申请日：2021-09-21
IPC分类号： C22C38/32 , C22C38/30 , C22C38/28 , C22C38/26 , C22C38/24 , C22C38/22 , C22C38/20 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/00 , E01B11/50 , E01B5/02
CPC分类号： C22C38/32 , C22C38/30 , C22C38/28 , C22C38/26 , C22C38/24 , C22C38/22 , C22C38/20 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/005 , C22C38/002 , C22C38/001 , E01B11/50 , E01B5/02 , B23K11/04
摘要： A welded rail according to an aspect of the present invention includes: a plurality of rail portions having a head portion and a web portion and having a height h; and a welded joint portion that joins the rail portions together, in which the rail portion has a predetermined chemical composition, a HAZ width of the welded joint portion is 60 mm or less, in a region of 0 to (⅔)×h from a head top portion outer surface in a cross section of the welded joint portion which is parallel to a longitudinal direction and an up-down direction of the welded rail and passes through a center of the welded joint portion and of ±5 mm in the longitudinal direction from a welding center, an area ratio of a martensite structure is 0.0006% or more and 0.1000% or less, and in the region, the number of martensite structures having a grain size of 20 to 200 μm is 3 to 80.
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公开(公告)号：US20230081462A1
公开(公告)日：2023-03-16
申请号：US17904445
申请日：2021-02-19
发明人： Shinya TERAMOTO , Yutaka NEISHI , Michimasa AONO , Shoichi SUZUKI , Tatsuro OCHI
IPC分类号： C22C38/34 , C22C38/32 , C22C38/30 , C22C38/28 , C22C38/26 , C22C38/24 , C22C38/22 , C22C38/04
摘要： A damper spring which has an excellent fatigue limit is provided. A chemical composition of the damper spring according to the present embodiment contains in mass %, C: 0.50 to 0.80%, Si: 1.20 to less than 2.50%, Mn: 0.25 to 1.00%, P: 0.020% or less, S: 0.020% or less, Cr: 0.40 to 1.90%, V: 0.05 to 0.60%, and N: 0.0100% or less, with the balance being Fe and impurities. In the damper spring, a number density of V-based precipitates having a maximum diameter ranging from 2 to 10 nm is 5000 to 80000 pieces/m3.
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公开(公告)号：US20230059951A1
公开(公告)日：2023-02-23
申请号：US17792112
申请日：2021-01-12
发明人： Yuya SUZUKI , Kengo TAKEDA
IPC分类号： C21D9/46 , B32B15/01 , C22C38/44 , C22C38/58 , C22C38/32 , C22C38/30 , C22C38/28 , C22C38/26 , C22C38/24 , C22C38/20 , C22C38/06 , C22C38/02 , C22C38/00 , C21D8/02 , C21D6/00 , C23C2/02 , C23C2/40
摘要： In the present invention, provided is a steel sheet having a predetermined chemical composition and a metallographic structure, in which A/B, which is a ratio of a length A of an interface between epitaxial ferrite and ferrite to a length B of an interface between the epitaxial ferrite and martensite in a cross section that is along a rolling direction and perpendicular to a surface of the steel sheet at a position of ¼ of a sheet thickness from the surface of the steel sheet is more than 1.5, a ratio of a major axis to a minor axis of the martensite is 5.0 or more, and a tensile strength is 980 MPa or more.
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公开(公告)号：US20230051620A1
公开(公告)日：2023-02-16
申请号：US17396763
申请日：2021-08-09
发明人： Jien-Wei Yeh
IPC分类号： C22C38/34 , C22C38/32 , C22C38/26 , C22C38/22 , C22C38/28 , C22C38/20 , C22C38/24 , C22C38/30 , C22C38/04 , C22C38/06
摘要： A high chromium and silicon-rich corrosion resistant steel is disclosed, which comprises, in weight percent: 22-30% Cr, 2-10% Si, and the balance Fe and incidental impurities, of which a content amount of Cr and Si is less than 37%. Experimental data reveal that, samples of the high chromium and silicon-rich corrosion resistant steel all have a pitting potential greater than 0.8 V and a hardness in a range between HV170 and HV500 in the as-homogenized condition. As a result, experimental data have proved that the high chromium and silicon-rich corrosion resistant steel of the present invention can replace conventional stainless steels having poor pitting resistance like type 304 and type 316 L, and then be adopted for the applications of components and/or structural parts requiring high corrosion resistance.
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公开(公告)号：US11577303B2
公开(公告)日：2023-02-14
申请号：US16320634
申请日：2016-07-28
发明人： Weiyi Wang
IPC分类号： B21K11/02 , B23P23/04 , B23K31/02 , C21D9/18 , C22C38/00 , C21D9/50 , B21K11/00 , C21D1/06 , C21D1/18 , B23K26/34 , B23K26/00 , B26B9/00 , C21D1/25 , C22C38/24 , C22C38/30
摘要： A method of manufacturing a cutting member include cutting a first metal material to form a first portion of the cutting member; cutting second metal material to form a second portion of the cutting member, wherein a first edge of the second portion has at least two line segments, a curve formed by the at least two line segments being mathematically continuously differentiable; welding the first portion and the second portion together; raising the cutting member blank to a first temperature at a first rate and holding raising the cutting member blank from the first temperature to a second temperature at a second rate lower than the first rate and holding, and raising the cutting member blank from the second temperature to a third temperature at a third rate not higher than the second rate and holding.
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公开(公告)号：US11530462B2
公开(公告)日：2022-12-20
申请号：US16958278
申请日：2018-12-17
申请人： POSCO
发明人： Dae-Hyun Song , June Soo Park , Il-Nam Yang
IPC分类号： C21D9/46 , C21D6/00 , C21D8/12 , C22C38/00 , C22C38/06 , C22C38/30 , C22C38/34 , C22C38/60 , H01F1/147
摘要： The present invention relates to a grain-oriented electrical steel sheet including 2.0 to 6.0 wt % of Si, 0.01 wt % or less (excluding 0 wt %) of C, 0.01 wt % or less (excluding 0 wt %) of N, and 0.005 to 0.1 wt % of Co, and including a balance of Fe and other inevitable impurities.
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10.发明申请公开(公告)号：US20220372601A1
公开(公告)日：2022-11-24
申请号：US17460308
申请日：2021-08-30
发明人： Qingchun Zhou , Weiming Xu , Jincai Gu , Jianhui Ge , Bowei Zhao , Junliang Wu , Sheng Ma
IPC分类号： C22C38/30 , C22C38/22 , C22C38/26 , C22C38/28 , C22C38/02 , C22C38/04 , C22C38/00 , C21D9/00 , C21D8/00
摘要： The present application relates to the technical field of die steel, and particularly discloses a hot working die steel with high thermal strength and high toughness and a manufacturing process thereof. The hot working die steel with high thermal strength and high toughness includes the following components in percentage by mass: 0.20-0.40% of carbon, 0.05-0.20% of silicon, 0.30-0.60% of manganese, 1.00-4.00% of chromium, 0.50-1.50% of molybdenum, 0.20-0.60% of vanadium, 0.60-1.00% of cobalt, 0.06-0.16% of titanium, 0.03-0.08% of yttrium, 0.03-0.08% of niobium, 0.005-0.012% of phosphorus, 0.003-0.008% of sulfur, and a balance of iron and inevitable impurities.
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