公开(公告)号：US20180347003A1

公开(公告)日：2018-12-06

申请号：US16001297

申请日：2018-06-06

Applicant: ATI Properties LLC

Inventor： Richard L. Kennedy ,  Robert M. Davis ,  Rex W. Bradley ,  Robin M. Forbes Jones

IPC: C21D3/06 ,  C22F1/18 ,  C22C14/00 ,  C22C1/06 ,  C21D8/00 ,  C21D1/773 ,  B22D21/02 ,  C22C1/02

CPC classification number: C21D3/06 ,  B22D21/022 ,  C21D1/773 ,  C21D8/00 ,  C22C1/02 ,  C22C1/06 ,  C22C14/00 ,  C22F1/183

Abstract: A method of producing an article selected from a titanium article and a titanium alloy article comprises melting feed materials with a source of hydrogen to form a molten heat of titanium or a titanium alloy, and casting at least a portion of the molten heat to form a hydrogenated titanium or titanium alloy ingot. The hydrogenated ingot is deformed at an elevated temperature to form a worked article comprising a cross-sectional area smaller than a cross-sectional area of the hydrogenated ingot. The worked article is dehydrogenated to reduce a hydrogen content of the worked article. In certain non-limiting embodiments of the method, the dehydrogenated article comprises an average α-phase particle size of less than 10 microns in the longest dimension.

公开(公告)号：US20180305782A1

公开(公告)日：2018-10-25

申请号：US15769898

申请日：2016-10-12

Applicant: voestalpine Krems GmbH

Inventor： Alfred SEYR ,  Christian ROUET

IPC: C21D9/00 ,  C21D8/00 ,  B21D5/00 ,  B21D5/08

CPC classification number: C21D9/0068 ,  B21D5/008 ,  B21D5/08 ,  B32B15/013 ,  C21D8/00 ,  C21D8/005 ,  C21D2211/001 ,  C21D2221/00

Abstract: The invention relates to a method for continuously roller-forming and hardening sheet steel in which a sheet steel strip is continuously roller-formed into a profile in a roller-profiling unit, characterized in that the roller-formed profile strand is preheated to a temperature below the austenite starting temperature (Ac1) and the roller-formed profile strand is then heated across subregions of its cross-section and/or subregions of its length to a temperature above AC3, with the roller-formed profile strand being acted on with an axial tensile stress at least during the heating of subregions to a temperature >AC3.

公开(公告)号：US10071406B2

公开(公告)日：2018-09-11

申请号：US14652709

申请日：2014-03-24

Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION

Inventor： Kazutoshi Ichikawa ,  Hidetoshi Ito ,  Noriaki Onodera

IPC: C22C38/46 ,  C22C38/48 ,  C21D8/02 ,  B21B1/02 ,  C22C38/26 ,  C22C38/24 ,  C22C38/16 ,  C22C38/08 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  B21B45/00 ,  B21B45/02 ,  C21D8/00 ,  C22C38/00 ,  C22C38/12

CPC classification number: B21B1/026 ,  B21B45/004 ,  B21B45/0203 ,  C21D8/00 ,  C21D8/0226 ,  C21D2211/004 ,  C21D2211/005 ,  C21D2211/009 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/16 ,  C22C38/24 ,  C22C38/26 ,  C22C38/48

Abstract: In a steel sheet pile according to the present invention, a carbon equivalent CEN is 0.260 to 0.500, a structure includes a ferrite, a pearlite, a Widmanstätten ferrite, and a precipitate, the precipitate is one or both of Nb carbonitride and V carbonitride, a total number density of the precipitate is 0.10 to 0.30 pieces/μm2, a total area ratio of the ferrite and the pearlite is 70% or more, an area ratio of the Widmanstätten ferrite is 1% or more, an average grain size of the ferrite and the pearlite is 10 to 80 μm, and a yield strength is 460 MPa or more.

公开(公告)号：US20180209009A1

公开(公告)日：2018-07-26

申请号：US15747825

申请日：2016-06-29

Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION

Inventor： Yusaku TOMIO ,  Hiroshi KAIDO

IPC: C21D9/46 ,  C22C38/54 ,  C22C38/52 ,  C22C38/50 ,  C22C38/48 ,  C22C38/46 ,  C22C38/44 ,  C22C38/42 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C21D8/02 ,  C21D6/00 ,  C21D1/18

CPC classification number: C21D9/46 ,  C21D1/18 ,  C21D1/25 ,  C21D6/004 ,  C21D6/005 ,  C21D6/007 ,  C21D6/008 ,  C21D8/00 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0247 ,  C21D8/0263 ,  C21D2211/001 ,  C21D2211/005 ,  C21D2211/008 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/52 ,  C22C38/54

Abstract: A stainless steel is provided having good corrosion resistance and good low-temperature toughness. A stainless steel contains, in mass %, Cr: 15.5 to 18.0%. The stainless steel has a matrix structure having, by volume ratio, 40 to 80% tempered martensite, 10 to 50% ferrite and 1 to 15% austenite. When a microstructure image obtained by photographing the matrix structure at a magnification of 100 times is positioned in an x-y coordinate system and each of 1024×1024 pixels is represented by a gray scale level, β defined by Equation (2) is not smaller than 1.55: 1.0≤Mo+0.5W≤3.5   (1). Here, Mo and W are the Mo and W contents in mass %. [ Formula   1 ] β = Su Sv ( 2 ) In Equation (2), Su is defined by Equation (3), and Sv is defined by Equation (4): [ Formula   2 ] Su = ∑ u = 1 1023   F  ( u , 0 )  ( 3 ) Sv = ∑ v = 1 1023   F  ( 0 , v )  ( 4 ) In Equations (3) and (4), F(u,v) is defined by Equation (5): [ Formula   3 ] F  ( u , v ) = ∑ x = 0 1023  ∑ y = 0 1023  f  ( x , y )  exp  { - 2  π   i  ( ux 1024 + vy 1024 ) } ( 5 ) In Equation (5), f(x,y) represents the gray level of the pixel at coordinates (x,y).

公开(公告)号：US20180161841A1

公开(公告)日：2018-06-14

申请号：US15830328

申请日：2017-12-04

Applicant: MS AUTOTECH CO., LTD.

Inventor： Jang Soo KIM ,  Hong Seag CHA ,  Dae Ho YANG ,  Mun Seok CHOI ,  Won IK EOM

IPC: B21D22/02 ,  C21D1/18 ,  C21D8/00 ,  B21D47/00 ,  B21D53/88 ,  B23K26/38

CPC classification number: B21D22/022 ,  B21D35/006 ,  B21D47/00 ,  B21D53/88 ,  B23K26/38 ,  C21D1/18 ,  C21D8/00 ,  C21D2211/008 ,  C21D2261/00

Abstract: Provided is a method for manufacturing vehicle body parts, including: rolling a blank such that the blank has two or more regions with different thicknesses; trimming the rolled blank; and performing hot press forming on the trimmed blank, and cooling the trimmed blank. The blank to be rolled has an absorption hole, and a flange protrudes from an edge region of the blank corresponding to a position of the absorption hole. The blank is rolled in two or more different directions.

公开(公告)号：US09735645B2

公开(公告)日：2017-08-15

申请号：US14322675

申请日：2014-07-02

Applicant: Saint-Augustin Canada Electric Inc.

Inventor： Cheruvari Karthik Hari Dharan

IPC: G01L1/04 ,  G01L1/22 ,  H02K7/09 ,  H02K7/02 ,  B21J1/06 ,  B21K1/28 ,  C21D8/00 ,  C21D9/00 ,  H02K5/24 ,  H02K7/00 ,  H02K7/08 ,  B21K1/32 ,  G01M13/04 ,  G01L1/24 ,  G01L5/00 ,  H02K11/20 ,  H02K11/215 ,  H02K15/02 ,  H02K16/00 ,  G01M1/14

CPC classification number: H02K7/09 ,  B21J1/06 ,  B21K1/28 ,  B21K1/32 ,  C21D8/00 ,  C21D9/00 ,  G01L1/24 ,  G01L5/0009 ,  G01M1/14 ,  G01M13/04 ,  H02K5/24 ,  H02K7/003 ,  H02K7/025 ,  H02K7/08 ,  H02K11/20 ,  H02K11/215 ,  H02K15/02 ,  H02K16/00 ,  Y02E60/16 ,  Y10T29/49012 ,  Y10T74/2119

Abstract: A flywheel energy storage system incorporates various embodiments in design and processing to achieve a very high ratio of energy stored per unit cost. The system uses a high-strength steel rotor rotating in a vacuum envelope. The rotor has a geometry that ensures high yield strength throughout its cross-section using various low-cost quenched and tempered alloy steels. Low-cost is also achieved by forging the rotor in a single piece with integral shafts. A high energy density is achieved with adequate safety margins through a pre-conditioning treatment. The bearing and suspension system utilizes an electromagnet that off-loads the rotor allowing for the use of low-cost, conventional rolling contact bearings over an operating lifetime of several years.

公开(公告)号：US09708677B2

公开(公告)日：2017-07-18

申请号：US14004994

申请日：2012-03-13

Applicant: Pieter Cornelis Van Eldijk ,  Abraham Van Eldijk

Inventor： Pieter Cornelis Van Eldijk ,  Abraham Van Eldijk

IPC: C21D5/00 ,  C21D8/00

CPC classification number: C21D5/00 ,  C21D8/00 ,  C21D8/005

Abstract: The invention relates to a method of heat treating a cast iron having graphite particles, in particular a cast iron having graphite nodules with a substantially spherical geometry. The method comprises the step of subjecting the cast iron to a first austenitizing temperature, in order to obtain a cast iron having an austenite matrix with a substantially homogeneous carbon content. Subsequently, at least part of the cast iron is subjected to at least a second, different austenitizing temperature in order to change, in at least part of the cast iron, the carbon concentration in a part of the matrix surrounding the (spherical) geometry of the graphite particles. The method yields improved controllability on strength properties characteristics for cast irons including malleable irons, in particular for ductile iron.

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：US20160355910A1

公开(公告)日：2016-12-08

申请号：US15117458

申请日：2015-02-25

Applicant: NIPPON STEEL & SUMITOMO CORPORATION

Inventor： Taizo MAKINO ,  Yukitru TAKESHITA ,  Naomitsu MIZUI ,  Yutaka WAKASU

IPC: C22C38/50 ,  C22C38/42 ,  B60B35/00 ,  C22C38/06 ,  C22C38/02 ,  C22C38/00 ,  C22C38/44 ,  C22C38/04

CPC classification number: C22C38/50 ,  B60B35/00 ,  B60B35/025 ,  B60B35/04 ,  B60Y2200/30 ,  C21D1/28 ,  C21D8/00 ,  C21D9/28 ,  C21D2211/005 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/18 ,  C22C38/28 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46

Abstract: Provided is a rail vehicle axle having an excellent fatigue limit and notch factor. A rail vehicle axle according to the present embodiment has a chemical composition consisting of, in mass %, C: 0.20 to 0.35%, Si: 0.20 to 0.65%, Mn: 0.40 to 1.20%, P: 0.020% or less, S: 0.020% or less, Cu: 0 to 0.30%, Ni: 0 to 0.30%, Cr: 0 to 0.30%, Mo: 0 to 0.08%, Al: 0 to 0.100%, N: 0.0200% or less, V: 0 to 0.060%, and Ti: 0 to 0.020%, with the balance being Fe and impurities, and satisfying Formulae (1) and (2): 0.58≦C+Si/8+Mn/5+Cu/10+Cr/4+V≦0.67  (1) Si+0.9Cr≧0.50  (2) where, each element symbol in Formulae (1) and (2) is substituted by the content (mass %) of a corresponding element.

Abstract translation: 提供了具有优异的疲劳极限和缺口因数的轨道车辆车轴。 根据本实施方式的轨道车辆轴具有质量％C：0.20〜0.35％，Si：0.20〜0.65％，Mn：0.40〜1.20％，P：0.020％以下的化学成分，S： 0.020％以下，Cu：0〜0.30％，Ni：0〜0.30％，Cr：0〜0.30％，Mo：0〜0.08％，Al：0〜0.100％，N：0.0200％ 至0.060％，Ti：0〜0.020％，余量为Fe和杂质，满足公式（1）和（2）：0.58‰C + Si / 8 + Mn / 5 + Cu / 10 + Cr / 4 + V‰0.67 Si + 0.9 Cr‰¥0.50其中，式（1）和（2）中的每个元素符号由相应元素的含量（质量％）代替。

公开(公告)号：US09464344B2

公开(公告)日：2016-10-11

申请号：US14356544

申请日：2012-11-07

Applicant: UNIVERSITE DE LORRAINE ,  ECOLE NATIONALE D'INGENIEURS DE METZ (ENIM) ,  ARTS ,  INSTITUT NATIONAL DES SCIENCES APPLIQUEES DE RENNES (INSA DE RENNES) ,  CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS)

Inventor： Pascal Laheurte ,  Frédéric Prima ,  Thierry Gloriant ,  Wafa Elmay ,  André Eberhardt ,  Etienne Patoor

IPC: A61L27/06 ,  C21D8/00 ,  C22F1/18 ,  C22C14/00 ,  A61L27/50

CPC classification number: C22F1/183 ,  A61L27/06 ,  A61L27/50 ,  C21D8/00 ,  C22C14/00

Abstract: According to a thermomechanical treatment process for a titanium alloy including between 23 and 27% niobium in atomic proportion, between 0 and 10% zirconium, and between 0 and 1% oxygen, nitrogen and/or silicon, the following steps are performed: a) an increase of a sample of the alloy to a temperature higher than 900° C., b) a fast quench, c) a severe cold strain, d) an ageing treatment at a temperature included between 200 and 600° C., the time of the ageing treatment being included between 10 seconds and 10 minutes. Alloy obtained by this process and prostheses made from such an alloy.