公开(公告)号：US20170283894A1

公开(公告)日：2017-10-05

申请号：US15529263

申请日：2015-04-30

申请人： POSCO

发明人： Soo-Ho PARK ,  Jae-Hong SHIM

IPC分类号： C21D9/00 ,  C22C38/06 ,  C22C38/04 ,  C21D6/00 ,  C22C38/00 ,  B22D27/04 ,  C21D8/02 ,  C22C38/28 ,  C22C38/02

CPC分类号： C21D9/0081 ,  B22D11/002 ,  B22D27/04 ,  C21D6/002 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0205 ,  C21D8/021 ,  C21D8/0226 ,  C21D8/0263 ,  C21D2211/004 ,  C21D2211/005 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/28

摘要： Ferritic stainless steel having a high degree of ductility and a method for manufacturing the ferritic stainless steel are provided. The stainless steel includes, by wt %, C: 0.005% to 0.1%, Si: 0.01% to 2.0%, Mn: 0.01% to 1.5%, P: 0.05% or less, S: 0.005% or less, Cr: 10% to 30%, Ti: 0.005% to 0.5%, Al: 0.01% to 0.15%, N: 0.005% to 0.03%, and the balance of Fe and inevitable impurities, wherein the ferritic stainless steel includes 3.5×106 or fewer particles of an independent Ti(CN) precipitate per square millimeter (mm2) of ferrite matrix.

公开(公告)号：US09732395B2

公开(公告)日：2017-08-15

申请号：US14347386

申请日：2012-09-27

申请人： JFE STEEL CORPORATION ,  NTN CORPORATION

发明人： Minoru Honjo ,  Kiyoshi Uwai ,  Shinji Mitao

IPC分类号： C21D9/40 ,  C21D8/00 ,  C22C38/22 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C21D7/13 ,  C21D9/00 ,  C21D1/26 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/44 ,  C22C38/48 ,  C22C38/50 ,  B22D7/00 ,  F16C33/12

CPC分类号： C21D8/005 ,  B22D7/00 ,  C21D1/26 ,  C21D7/13 ,  C21D9/0081 ,  C21D9/40 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/42 ,  C22C38/44 ,  C22C38/48 ,  C22C38/50 ,  F16C33/121

摘要： A method is provided with which a bearing steel, even when obtained from an ingot, is made to have a segregation part reduced in the degree of segregation and maximum inclusion diameter. The ingot contains 0.56-0.70 mass % C, 0.15-0.50 mass %, excluding 0.50 mass %, Si, 0.60-1.50 mass % Mn, 0.50-1.10 mass % Cr, 0.05-0.5 mass % Mo, up to 0.025 mass % P, up to 0.025 mass % S, 0.005-0.500 mass % Al, up to 0.0015 mass % O, and 0.0030-0.015 mass % N, with the remainder comprising Fe and incidental impurities. The ingot has a degree of segregation of 2.8 or less and a predicted value of the maximum diameter of inclusions present in 30,000 mm2 of the ingot, as calculated by extreme value statistics, of 60 μm or less.

公开(公告)号：US20170166988A1

公开(公告)日：2017-06-15

申请号：US15438313

申请日：2017-02-21

申请人： The NanoSteel Company, Inc.

发明人： Daniel James BRANAGAN ,  Andrew E. FRERICHS ,  Brian E. MEACHAM ,  Grant G. JUSTICE ,  Andrew T. BALL ,  Jason K. WALLESER ,  Kurtis CLARK ,  Logan J. TEW ,  Scott T. ANDERSON ,  Scott LARISH ,  Sheng CHENG ,  Taylor L. GIDDENS ,  Alla V. SERGUEEVA

IPC分类号： C21D9/00 ,  C21D6/00 ,  B22D11/00 ,  C22C38/58 ,  C22C38/54 ,  C22C38/42 ,  C22C38/34 ,  C22C38/04 ,  C22C38/02 ,  B23H7/00 ,  B23K26/38 ,  B21D28/26 ,  B26F3/00 ,  B21D22/02 ,  C21D8/00

CPC分类号： C21D9/0068 ,  B21D28/00 ,  B21D28/26 ,  B22D11/002 ,  B23H7/00 ,  B23K26/38 ,  B23K2101/006 ,  B23K2103/05 ,  B26F3/004 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/005 ,  C21D8/0205 ,  C21D8/021 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0263 ,  C21D8/0273 ,  C21D9/0081 ,  C21D2201/03 ,  C21D2261/00 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/08 ,  C22C38/16 ,  C22C38/20 ,  C22C38/32 ,  C22C38/34 ,  C22C38/38 ,  C22C38/42 ,  C22C38/54 ,  C22C38/58

摘要： This disclosure is directed at methods for mechanical property improvement in a metallic alloy that has undergone one or more mechanical property losses as a consequence of forming an edge, such as in the formation of an internal hole or an external edge. Methods are disclosed that provide the ability to improve mechanical properties of metallic alloys that have been formed with one or more edges placed in the metallic alloy by a variety of methods which may otherwise serve as a limiting factor for industrial applications.

公开(公告)号：US20160369365A1

公开(公告)日：2016-12-22

申请号：US14901782

申请日：2014-07-09

申请人： NATIONAL INSTITUTE FOR MATERIALS SCIENCE

发明人： Toshihiro HANAMURA ,  Shiro TORIZUKA

IPC分类号： C21D9/00 ,  C22C38/04 ,  B21J5/00 ,  C22C38/00 ,  C21D8/00 ,  C22C38/06 ,  C22C38/02

CPC分类号： C21D9/0081 ,  B21J5/00 ,  C21D6/005 ,  C21D7/13 ,  C21D8/005 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12

摘要： Provided is martensitic steel which is used in structures such as buildings and bridges, and automotive underbody, and mechanical parts such as gears and is more suitably used for steel products such as thick steel sheets, shape steel, a deformed steel bar, steel bars, or steel wires. The martensitic steel has a microstructure of a martensite structure containing a chemical composition, by mass %, of Si: 1.0 to 3.5%, Mn: 4.5 to 5.5%, Al: 0.001 to 0.080%, Nb: 0.045% or less, and C having an amount in which the following regression equation (1) is satisfied and the maximum stress (TS) becomes 1800 to 2160 MPa, a balance being Fe and inevitable impurities of: P: 0.030% or less, S: 0.020% or less, and N: 0.010% or less, the martensitic steel having total elongation of 13 to 15%. TS(maximum stress) [MPa]=4000×C[mass %]+1050  (1)

摘要翻译： 本发明提供用于建筑物，桥梁，汽车底盘等结构的马氏体钢，齿轮等机械部件，更适用于厚钢板，形状钢，变形钢棒，钢筋等钢材， 或钢丝。 马氏体钢具有包含以质量％计的Si：1.0〜3.5％，Mn：4.5〜5.5％，Al：0.001〜0.080％，Nb：0.045％以下的化学组成的马氏体组织，C 其中满足以下回归方程（1），最大应力（TS）为1800〜2160MPa，余量为P：0.030％以下，Fe：不可避免的杂质，S：0.020％以下，S N：0.010％以下，总伸长率为13〜15％的马氏体钢。 TS最大应力MPa = 4000×C质量％+ 1050

公开(公告)号：US20160215358A1

公开(公告)日：2016-07-28

申请号：US15023543

申请日：2013-12-03

申请人： PEKING UNIVERSITY FOUNDER GROUP CO., LTD. ,  SUZHOU SUXIN SPECIAL STEEL CO., LTD. ,  JIANGSU SUZHOU STEEL GROUP CO., LTD.

发明人： Donglin LIU ,  Xu ZHOU ,  Yifeng XU ,  Zhiwei ZHOU ,  Jie YU

IPC分类号： C21D9/00 ,  C22C38/46 ,  C22C38/42 ,  C22C38/06 ,  C22C38/04 ,  C21D1/60 ,  C22C38/00 ,  C22C33/04 ,  C21D8/00 ,  C21D6/00 ,  C21D1/667 ,  B22D11/00 ,  C22C38/02

CPC分类号： C21D9/0081 ,  B22D11/001 ,  C21D1/60 ,  C21D1/667 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/005 ,  C21D8/0231 ,  C21D8/065 ,  C21D9/0062 ,  C21D11/005 ,  C21D2211/005 ,  C21D2211/009 ,  C22C33/04 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/16 ,  C22C38/42 ,  C22C38/46 ,  C22C38/58

摘要： A non quenched and tempered steel and manufacturing process thereof. The manufacturing process of the non quenched and tempered steel has a cooling step after the finish rolling step, wherein intense cooling and moderate cooling are carried out alternatively. The intense cooling can ensure the surface temperature of the steel to decrease rapidly; and the moderate cooling allows the core temperature of the steel to dissipate gradually to the surface; a further intense cooling is carried out to allow rapid heat dissipation. The intense cooling and the moderate cooling can be carried out alternately several times according to practical requirement. A water cooling mode combining intense cooling and moderate cooling allows the core temperature and the surface temperature of the steel to become the same within a short time, and thus ensures the uniformity of the mechanical properties of the steel and improves production efficiency.

摘要翻译： 非淬火回火钢及其制造方法。 非淬火和回火钢的制造过程在精轧步骤之后具有冷却步骤，其中强制冷却和适度冷却交替进行。 强烈的冷却可以确保钢的表面温度迅速下降; 而适度的冷却使得钢的核心温度逐渐向表面散发; 进行进一步强烈的冷却以允许快速散热。 根据实际需要可以多次进行强冷却和中度冷却。 结合强烈冷却和适度冷却的水冷模式使得钢芯的温度和表面温度在短时间内变得相同，从而确保钢的机械性能的均匀性并提高生产效率。

公开(公告)号：US20150299835A1

公开(公告)日：2015-10-22

申请号：US14753223

申请日：2015-06-29

申请人： INDUSTEEL CREUSOT

发明人： Jean BEGUINOT ,  Valery NGOMO

IPC分类号： C22C38/58 ,  C21D9/00 ,  C21D9/46 ,  C22C38/46 ,  C22C38/04 ,  C22C38/02 ,  C22C38/44 ,  C21D8/02 ,  C21D6/00

CPC分类号： C22C38/58 ,  B29C33/38 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0205 ,  C21D8/0242 ,  C21D8/0263 ,  C21D9/0081 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C22C38/22 ,  C22C38/44 ,  C22C38/46

摘要： High-strength steel of which the chemical composition comprises, by weight: 0.03%≦C

摘要翻译： 高强度钢，其化学组成按重量计包含：0.03％＆lt; NlE; C <0.2％Si＆nlE; 0.49％3％

公开(公告)号：US20150247223A1

公开(公告)日：2015-09-03

申请号：US14428194

申请日：2013-09-13

申请人： TATA STEEL NEDERLAND TECHNOLOGY BV

发明人： Cheng Liu ,  Christian Theodorus Wilhelmus Lahaye

IPC分类号： C22C38/06 ,  B22D11/12 ,  C21D8/02 ,  C21D9/00 ,  C21D9/52 ,  C21D6/00 ,  C21D1/26 ,  C23C2/02 ,  C23C2/40 ,  C25D7/00 ,  C25D5/36 ,  C22C38/14 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  B22D11/00

CPC分类号： C22C38/06 ,  B22D11/001 ,  B22D11/12 ,  C21D1/26 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0263 ,  C21D9/0081 ,  C21D9/52 ,  C22C38/001 ,  C22C38/002 ,  C22C38/004 ,  C22C38/02 ,  C22C38/04 ,  C22C38/14 ,  C23C2/02 ,  C23C2/40 ,  C25D5/36 ,  C25D7/00

摘要： A particle-reinforced high strength and low density steel with improved E-modulus and method for producing the steel.

摘要翻译： 具有改进的E模量的颗粒增强的高强度和低密度钢以及用于生产钢的方法。

公开(公告)号：US09103008B2

公开(公告)日：2015-08-11

申请号：US12990583

申请日：2009-05-05

申请人： Jean Beguinot ,  Valery Ngomo

发明人： Jean Beguinot ,  Valery Ngomo

IPC分类号： C22C38/04 ,  C22C38/00 ,  C22C38/60 ,  C22C38/16 ,  C22C38/20 ,  C22C38/42 ,  C22C38/18 ,  C22C38/22 ,  C22C38/40 ,  C22C38/08 ,  C22C38/12 ,  B29C33/38 ,  C22C38/02 ,  C22C38/58

CPC分类号： C22C38/58 ,  B29C33/38 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0205 ,  C21D8/0242 ,  C21D8/0263 ,  C21D9/0081 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C22C38/22 ,  C22C38/44 ,  C22C38/46

摘要： High-strength steel of which the chemical composition comprises, by weight: 0.03%≦C

摘要翻译： 高强度钢，其化学组成按重量计包含：0.03％＆lt; NlE; C <0.2％Si＆nlE; 0.49％3％

公开(公告)号：US20150167135A1

公开(公告)日：2015-06-18

申请号：US14622402

申请日：2015-02-13

申请人： INDUSTEEL CREUSOT ,  UGITECH

发明人： Bernard BONNEFOIS ,  Jérôme PEULTIER ,  Mickael SERRIERE ,  Jean-Michel HAUSER ,  Eric CHAUVEAU

IPC分类号： C22C38/60 ,  C21D6/00 ,  C21D9/46 ,  C21D9/52 ,  C21D9/00 ,  C22C38/56 ,  C22C38/54 ,  C22C38/52 ,  C22C38/50 ,  C22C38/48 ,  C22C38/46 ,  C22C38/44 ,  C22C38/42 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  B21B1/26 ,  C21D8/02

CPC分类号： C22C38/60 ,  B21B1/26 ,  C21D6/002 ,  C21D6/004 ,  C21D6/005 ,  C21D6/007 ,  C21D6/008 ,  C21D8/021 ,  C21D8/0226 ,  C21D8/0263 ,  C21D9/0081 ,  C21D9/46 ,  C21D9/52 ,  C21D9/525 ,  C21D2211/005 ,  C22C38/001 ,  C22C38/002 ,  C22C38/004 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/52 ,  C22C38/54 ,  C22C38/56

摘要： The invention relates to a duplex stainless steel composition, the composition of which consists of, in % by weight: C≦0.05% 21%≦Cr≦25% 1%≦Ni≦2.95% 0.16%≦N≦0.28% Mn≦2.0% Mo+W/2≦0.50% Mo≦0.45% W≦0.15% Si≦1.4% Al≦0.05% 0.11%≦Cu≦0.50% S≦0.010% P≦0.040% Co≦0.5% REM≦0.1% V≦0.5% Ti≦0.1% Nb≦0.3% Mg≦0.1% the balance being iron and impurities resulting from the smelting, and the microstructure consisting of austenite and 35 to 65% ferrite by volume, the composition furthermore satisfying the following relationships: 40≦IF≦70 where IF=6×(% Cr+1.32×% Mo+1.27×% Si)−10×(% Ni+24×% C+16.15×% N+0.5×% Cu+0.4×% Mn)−6.17 and ILCR≧30.5 where ILCR=% Cr+3.3×% Mo+16×% N+2.6×% Ni−0.7×% Mn, and also to a process for manufacturing plate, strip, coil, bar, rod, wire, sections, forgings and castings made of this steel.

摘要翻译： 本发明涉及一种双组份不锈钢组合物，其组成由以重量％计：C＆lt; EL; 0.05％21％＆lt; EL; Cr＆NlE; 25％1％＆NlE; Ni＆NlE; 2.95％0.16％＆NlE; N＆lt; Mn和nlE; 2.0％Mo + W /2≤n1E; 0.50％Mo和NlE; 0.45％W＆lt; llE; 0.15％Si＆NlE; 1.4％Al＆NlE; 0.05％0.11％＆lt; Cu＆nlE; 0.50％S＆NlE; 0.010％P＆NlE; 0.040％Co＆NlE; 0.5％REM＆ 0.1％V＆NlE; 0.5％Ti＆NlE; 0.1％Nb＆NlE; 0.3％Mg＆NlE; 0.1％余量为铁和冶炼产生的杂质，以及由奥氏体和体积含量为35至65％的铁素体组成的组织，其组成还满足以下 关系：40＆nlE; IF＆nlE; 70其中IF = 6×（％Cr + 1.32×％Mo + 1.27×％Si）-10×（％Ni + 24×％C + 16.15×％N + 0.5×％Cu + 0.4× ％Mn）-6.17和ILCR≥30.5其中ILCR =％Cr + 3.3×％Mo + 16×％N + 2.6×％Ni-0.7×％Mn，以及制造板，带，线圈，棒， 棒，线，截面，锻件和铸钢件。

公开(公告)号：US20150144290A1

公开(公告)日：2015-05-28

申请号：US14364334

申请日：2013-08-08

申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION

发明人： Seiji Miyamoto ,  Takayoshi Kagari

IPC分类号： B22D11/00 ,  C22C30/02 ,  C22C19/05 ,  B22D11/12

CPC分类号： B22D11/001 ,  B22D11/00 ,  B22D11/002 ,  B22D11/12 ,  B22D11/1206 ,  B22D11/1213 ,  C21D6/004 ,  C21D7/13 ,  C21D9/0081 ,  C22C19/055 ,  C22C19/056 ,  C22C30/00 ,  C22C30/02

摘要： Provided is a method for manufacturing a round billet of Ni-containing high alloy including steps of continuously casting a molten steel by using a casting mold, thereby obtaining a rectangular billet, and shaping the rectangular billet into round billet by forging/rolling, wherein the casting mold has a shape such that a w/h ratio between long side length (w) and short side length (h) of a cross section of the rectangular billet perpendicular to the casting direction of rectangular billet is 1.0 to 2.0, the chemical composition of molten steel is, by mass %: C: 0.005 to 0.250%, Si: 0.05 to 2.00%, Mn: 0.05 to 3.00%, P: 0.04% or less, S: 0.004% or less, Cu: 0.01 to 3.00%, Cr: 10 to 35%, Ni: 10 to 80%, Mo: 1.5 to 10.0%, Al: 0.001 to 0.300%, N: 0.001 to 0.300%, W: 0.00 to 6.00%, Ti: 0.00 to 2.00%, and the balance: Fe and impurities.

摘要翻译： 本发明提供一种含镍高合金圆钢坯的制造方法，其特征在于，包括使用铸模连续铸造钢水的步骤，得到矩形钢坯，通过锻造/轧制将矩形钢坯成形为圆钢坯，其中， 铸造模具具有与长方形坯料的铸造方向垂直的矩形坯料的长边长度（w）和短边长度（h）之间的aw / h比为1.0〜2.0的形状， 钢水以质量％计：C：0.005〜0.250％，Si：0.05〜2.00％，Mn：0.05〜3.00％，P：0.04％以下，S：0.004％以下，Cu：0.01〜3.00％ Cr：10〜35％，Ni：10〜80％，Mo：1.5〜10.0％，Al：0.001〜0.300％，N：0.001〜0.300％，W：0.00〜6.00％，Ti：0.00〜2.00％ 余量：铁和杂质。