公开(公告)号：US20170250015A1

公开(公告)日：2017-08-31

申请号：US15440660

申请日：2017-02-23

Applicant: TDK CORPORATION

Inventor： Masashi MIWA ,  Takurou IWASA ,  Tamotsu ISHIYAMA

IPC: H01F1/055 ,  C22C38/14 ,  C22C38/10 ,  C22C38/06 ,  C21D6/00 ,  B22D11/00 ,  C22C33/04 ,  B22F9/04 ,  B22F3/16 ,  B22F3/24 ,  C22C38/16 ,  C22C38/00

Abstract: An R-T-B based permanent magnet includes main phase grains composed of R2T14B type compound. R is a rare earth element. T is iron group element(s) essentially including Fe or Fe and Co. B is boron. The magnet contains at least C, Ga, and M selected from Zr, Ti, and Nb in addition to R, T, and B. B is contained at 0.71 mass % to 0.88 mass %. C is contained at 0.15 mass % to 0.34 mass %. Ga is contained at 0.40 mass % to 1.40 mass %. M is contained at 0.25 mass % to 2.50 mass %. A formula (1) of 0.14≦[C]/([B]+[C])≦0.30 and a formula (2) of 5.0≦[B]+[C]−[M]≦5.6 are satisfied, where [B], [C], and [M] are respectively a content of B, C, and M by atom %.

公开(公告)号：US20170233855A1

公开(公告)日：2017-08-17

申请号：US15428259

申请日：2017-02-09

Applicant: Seoul National University R&DB Foundation

Inventor： Eun Soo PARK ,  Hyun Seok Oh ,  Sangjun Kim ,  Kooknoh Yoon ,  Chae Woo Ryu

IPC: C22C38/58 ,  C22C33/04 ,  C22C30/00 ,  C22C1/02 ,  C22C22/00 ,  C22C19/07 ,  C22C19/05 ,  C22C38/52 ,  C22C27/06

CPC classification number: C22C38/58 ,  C22C1/023 ,  C22C19/058 ,  C22C19/07 ,  C22C22/00 ,  C22C27/06 ,  C22C30/00 ,  C22C33/04 ,  C22C38/52

Abstract: The present invention relates to a high entropy alloy having more improved mechanical properties by controlling contents of additive elements in a NiCoFeMnCr 5-element alloy to control stacking fault energy, thereby controlling stability of a γ austenite phase to control a transformation mechanism, wherein the stacking fault energy is controlled in a composition range of NiaCobFecMndCre (a+b+c+d+e=100, 1≦a≦50, 1≦b≦50, 1≦c≦50, 1≦d≦50, 10≦e≦25, and 77a−42b−22c+73d−100e+2186≦1500), and thus, the γ austenite phase exhibits a twin-induced plasticity (TWIP) property or a transformation induced-plasticity (TRIP) property in which the γ austenite phase is subjected to phase transformation into an ε martensite phase or an α′ martensite phase, under stress, thereby having improved strength and elongation at the same time to have excellent mechanical properties.

公开(公告)号：US20170233841A1

公开(公告)日：2017-08-17

申请号：US15501643

申请日：2015-07-17

Applicant: Ausferritic AB

Inventor： Richard LARKER

IPC: C21D1/20 ,  C22C38/34 ,  C22C38/04 ,  B22D11/00 ,  B21J1/00 ,  C21D9/00 ,  C21D6/00 ,  C21D5/00 ,  C22C37/08 ,  C22C37/10 ,  C22C38/44 ,  C22C33/04

Abstract: Austempered steel for components requiring high strength and high ductility and/or fracture toughness, which has a silicon content of 3.1 weight-% to 4.4 weight-% and a carbon content of 0.4 weight-% to 0.6 weight-%. The microstructure of the austempered steel is ausferritic or superbainitic.

公开(公告)号：US20170107589A1

公开(公告)日：2017-04-20

申请号：US15129518

申请日：2015-04-09

Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION

Inventor： Masaki MIZOGUCHI ,  Kazutoshi ICHIKAWA ,  Kazuaki MITSUYASU ,  Hirokazu SUGIYAMA

IPC: C21D9/00 ,  C22C38/50 ,  C22C38/46 ,  C22C38/44 ,  C22C38/42 ,  C22C38/16 ,  C22C38/14 ,  C22C38/12 ,  C22C38/08 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C22C33/04 ,  C21C7/06 ,  C21C7/00 ,  C21D8/00 ,  B22D25/02 ,  C22C38/58

CPC classification number: C21D9/0068 ,  B22D25/02 ,  C21C7/0006 ,  C21C7/06 ,  C21D8/00 ,  C21D8/005 ,  C22C33/04 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/50 ,  C22C38/58 ,  E04C3/06 ,  E04C2003/0421 ,  E04C2003/0452

Abstract: An H-section steel has a predetermined chemical composition, in which a Mg-containing oxide having an equivalent circle diameter of 0.005 μm to 0.5 μm is contained at a total number density of 100 pieces/mm2 to 5000 pieces/mm2, a thickness of a flange is 100 mm to 150 mm, at a strength evaluation portion which is at a ⅙ position from a surface of the flange in a length direction and at a ¼ position from the surface in a thickness direction, a fraction of bainite in a steel structure is 80% or more, and the average prior austenite grain size is 70 μm or more, and at a toughness evaluation portion which is at a ½ position from the surface of the flange in the length direction and at a ¾ position from the surface of the flange in the thickness direction, the average prior austenite grain size in a steel structure is 200 μm or less.

公开(公告)号：US20170081745A1

公开(公告)日：2017-03-23

申请号：US15365026

申请日：2016-11-30

Applicant: Technological Resources Pty. Limited

Inventor： Rodney James Dry ,  Jacques Pilote

IPC: C22C38/12 ,  C21B13/00 ,  C21B11/08 ,  C22C33/04 ,  C21B3/04

CPC classification number: C22C38/12 ,  C03C3/062 ,  C21B3/04 ,  C21B11/08 ,  C21B13/0006 ,  C21B13/0013 ,  C21C5/54 ,  C22C33/04 ,  Y02P10/136 ,  Y02P10/216

Abstract: A molten bath-based direct smelting process comprises controlling the process conditions in a direct smelting vessel so that molten slag in a molten bath of metal and slag in the vessel has a viscosity in a range of 0.5-5 poise when the slag temperature is in the range of 1400-1550° C. in the molten bath in the vessel.

公开(公告)号：US09580778B2

公开(公告)日：2017-02-28

申请号：US14334801

申请日：2014-07-18

Applicant: AICHI STEEL CORPORATION

Inventor： Yuji Adachi ,  Naoki Fukuda

IPC: C22C38/44 ,  C22C38/42 ,  C22C38/06 ,  C22C38/04 ,  C22C33/04 ,  C22C38/00 ,  C22C38/54 ,  C22C38/02 ,  C22C38/20 ,  C22C38/22 ,  C22C38/32 ,  C23C8/22 ,  C21C5/52

CPC classification number: C22C38/001 ,  C21C5/5211 ,  C22C33/04 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/20 ,  C22C38/22 ,  C22C38/32 ,  C22C38/42 ,  C22C38/44 ,  C22C38/54 ,  C23C8/22 ,  Y02P10/216

Abstract: An electric furnace steel contains, by mass %, C: 0.12 to 0.28%, Si: equal to or less than 0.15%, Mn: 0.65 to 0.95%, P: equal to or less than 0.035%, S: equal to or less than 0.035%, Cr: 1.35 to 1.90%, Al: 0.020 to 0.050%, and N: 0.0080 to 0.0230%. A scrap material is selected such that Cu, Ni, and Mo that derive from the scrap material and are thus contained as impurities in the electric furnace steel satisfy Expression 1. The electric furnace steel further contains Fe and unavoidable impurities as a remainder thereof. Accordingly, the electric furnace steel can secure carburizing quality equivalent to or higher than that of Cr—Mo steel, and can have properties equivalent to or higher than that of Cr—Mo steel, without adding Mo. ([Cu]+2×[Ni])0.76×[Mo]≧0.0040  Expression 1:

Abstract translation: 电炉钢以质量％计含有C：0.12〜0.28％，Si：0.15％以下，Mn：0.65〜0.95％，P：等于或小于0.035％，S：等于或等于 0.035％以下，Cr：1.35〜1.90％，Al：0.020〜0.050％，N：0.0080〜0.0230％。 选择废料，使得从废料中衍生并因此在电炉钢中作为杂质而含有的Cu，Ni和Mo满足表达式1.电炉钢还含有Fe和其余部分的不可避免的杂质。 因此，电炉钢可以确保等于或高于Cr-Mo钢的渗碳质量，并且可以具有等于或高于Cr-Mo钢的性能，而不添加Mo（[Cu] + 2×[ Ni]）0.76×[Mo]≥0.0040表达式1：

公开(公告)号：US09567146B2

公开(公告)日：2017-02-14

申请号：US14418655

申请日：2013-08-01

Applicant: MITSUBISHI GAS CHEMICAL COMPANY, INC.

Inventor： Natsuko Matsushita ,  Emi Ishihara ,  Hirokazu Tanaka ,  Tatsuo Iwai

IPC: B65D81/26 ,  A23L3/3436 ,  B22F1/02 ,  C08K3/08 ,  B01D53/02 ,  B01D53/82 ,  B01D53/86 ,  B22F1/00 ,  B01J20/26 ,  B01J20/28 ,  B01J20/30 ,  B01J20/32 ,  B01D53/14 ,  C08K3/10 ,  B01J20/02 ,  C22C1/02 ,  C22C33/04 ,  C22C38/06 ,  B22F9/04 ,  B22F3/10

CPC classification number: B65D81/266 ,  A23L3/3436 ,  B01D53/02 ,  B01D53/14 ,  B01D53/82 ,  B01D53/8671 ,  B01D2257/104 ,  B01J20/0225 ,  B01J20/0229 ,  B01J20/0248 ,  B01J20/261 ,  B01J20/28026 ,  B01J20/28033 ,  B01J20/2805 ,  B01J20/28059 ,  B01J20/3014 ,  B01J20/3085 ,  B01J20/3204 ,  B01J20/3236 ,  B01J2220/46 ,  B22F1/00 ,  B22F1/0011 ,  B22F1/0088 ,  B22F1/02 ,  B22F9/04 ,  B22F2003/1014 ,  B22F2998/10 ,  B22F2999/00 ,  C08K3/08 ,  C08K3/10 ,  C22C1/02 ,  C22C33/04 ,  C22C38/06 ,  C23F1/00

Abstract: A process for producing an oxygen absorbing agent includes treating an alloy with an aqueous solution of an acid or an alkali, the alloy including at least one transition metal selected from the group consisting of manganese, iron, platinum, and copper group metals and at least one metal selected from the group consisting of aluminum, zinc, tin, lead, magnesium, and silicon to elute and remove at least a part of the component; and subjecting the alloy obtained by removing at least a part of the component in the alloy to treatment with an aqueous solution of a salt of an inorganic acid or a salt of an organic acid that can form a salt with the transition metal as the component, to form a metal salt in at least a part of the surface of the alloy.

Abstract translation: 一种制备氧吸收剂的方法包括用酸或碱的水溶液处理合金，所述合金包括至少一种选自由锰，铁，铂和铜族金属组成的组的过渡金属，并且至少 选自由铝，锌，锡，铅，镁和硅组成的组中的一种金属，以洗脱并除去至少一部分组分; 并且将通过除去合金中的至少一部分成分而获得的合金用无机酸盐或与过渡金属形成盐的有机酸的盐的水溶液作为组分进行处理， 以在合金的至少一部分表面形成金属盐。

公开(公告)号：US20160244856A1

公开(公告)日：2016-08-25

申请号：US15026037

申请日：2014-07-03

Applicant: FEDERAL-MOGUL FRIEDBERG GMBH

Inventor： CHRISTOPH BRADL ,  MARC-MANUEL MATZ ,  ANDREAS DENGLER ,  ANDREAS KUMPFMULLER

IPC: C21D9/40 ,  C22C33/04 ,  C21D1/09 ,  C22C33/08 ,  F16J15/34 ,  C21D5/00

CPC classification number: C21D9/40 ,  C21D1/09 ,  C21D1/34 ,  C21D1/38 ,  C21D5/00 ,  C21D2211/002 ,  C21D2211/004 ,  C21D2211/007 ,  C21D2211/008 ,  C21D2221/00 ,  C21D2221/10 ,  C21D2251/04 ,  C22C33/04 ,  C22C33/08 ,  F16J15/3496

Abstract: A slide ring includes a main body composed of grey cast iron, wherein at least a partial region of a functional surface has a ledeburitic microstructure at the surface. A method for producing such a slide ring includes heating a functional surface of the slide ring by irradiating with high-energy radiation, wherein the irradiation is carried out so that at least a partial region of the irradiated surface is remelted, wherein the parameters of the irradiation are selected so that at least a partial region of the functional surface has a ledeburitic microstructure after cooling.

Abstract translation: 滑动环包括由灰口铸铁构成的主体，其中功能表面的至少部分区域在表面具有引线组织。 制造这种滑环的方法包括通过用高能辐射照射来加热滑动环的功能表面，其中进行照射以使被照射表面的至少部分区域重熔，其中， 选择照射，使得功能表面的至少一部分区域在冷却后具有带状微结构。

公开(公告)号：US20160230247A1

公开(公告)日：2016-08-11

申请号：US15023544

申请日：2013-12-03

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

Inventor： Donglin LIU ,  Xu ZHOU ,  Yifeng XU ,  Zhiwei ZHOU ,  Jie YU

IPC: C21D9/52 ,  C22C38/46 ,  C22C38/42 ,  C22C38/06 ,  C22C38/04 ,  C21D9/00 ,  C22C38/00 ,  C22C33/04 ,  C21D8/06 ,  C21D6/00 ,  C21D1/667 ,  C21D1/60 ,  C22C38/58 ,  C22C38/02

CPC classification number: C21D9/525 ,  B21B1/46 ,  B21B37/76 ,  B22D11/001 ,  C21D1/60 ,  C21D1/667 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0231 ,  C21D8/065 ,  C21D9/0062 ,  C21D11/005 ,  C21D2211/005 ,  C21D2211/009 ,  C22C33/04 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/16 ,  C22C38/42 ,  C22C38/46 ,  C22C38/58

Abstract: A non quenched and tempered steel and manufacturing process thereof. The process comprises a cooling step after the finish rolling step; and the process utilizes alternate intense cooling and moderate cooling. 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 the production efficiency.

Abstract translation: 非淬火回火钢及其制造方法。 该方法包括精轧步骤之后的冷却步骤; 并且该方法利用交替的强冷却和适度的冷却。 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，从而确保了钢的机械性能的均匀性并提高了生产效率。

公开(公告)号：US20160208358A1

公开(公告)日：2016-07-21

申请号：US15023539

申请日：2013-12-03

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

Inventor： Donglin LIU ,  Xu ZHOU ,  Yifeng XU ,  Zhiwei ZHOU ,  Jie YU

IPC: C21D9/00 ,  C22C38/58 ,  C22C38/46 ,  C22C38/42 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C21D1/60 ,  C21D8/02 ,  C21D6/00 ,  C21C5/52 ,  C21C5/02 ,  C22C33/04 ,  B22D11/00

CPC classification number: C21D9/0081 ,  B22D11/001 ,  C21C5/02 ,  C21C5/52 ,  C21D1/60 ,  C21D1/667 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0205 ,  C21D8/021 ,  C21D8/0226 ,  C21D8/0231 ,  C21D8/0247 ,  C21D8/065 ,  C21D9/0062 ,  C21D9/28 ,  C21D11/005 ,  C21D2211/005 ,  C21D2211/009 ,  C22C33/04 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/16 ,  C22C38/42 ,  C22C38/46 ,  C22C38/58

Abstract: A non quenched and tempered steel and manufacturing process thereof. The process comprises a cooling step after the finish rolling step; and the process utilizes alternate intense cooling and moderate cooling. 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 the production efficiency.