公开(公告)号：US20230203617A1

公开(公告)日：2023-06-29

申请号：US18177109

申请日：2023-03-01

Applicant: ArcelorMittal

Inventor： Martin BEAUVAIS ,  Alice DUMONT ,  Alexandre GIBOT ,  Astrid PERLADE ,  Kangying ZHU

IPC: C21D9/50 ,  B32B15/01 ,  C21D6/00 ,  C21D8/04 ,  C21D9/46 ,  C22C38/00 ,  C22C38/02 ,  C22C38/06 ,  C22C38/22 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38

CPC classification number: C21D9/50 ,  B32B15/013 ,  C21D6/002 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0405 ,  C21D8/0426 ,  C21D8/0436 ,  C21D8/0463 ,  C21D9/46 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/06 ,  C22C38/22 ,  C22C38/26 ,  C22C38/28 ,  C22C38/32 ,  C22C38/38 ,  B32B2605/00 ,  C21D2211/001 ,  C21D2211/002 ,  C21D2211/003 ,  C21D2211/005 ,  C21D2211/008

Abstract: A steel sheet for the manufacture of a press hardened part is provided, having a composition of: 0.15%≤C≤0.22%, 3.5%≤Mn

公开(公告)号：US20230201919A1

公开(公告)日：2023-06-29

申请号：US17919824

申请日：2020-04-20

Applicant: ArcelorMittal

Inventor： Michael MASLEID ,  Bruce Ross FORMAN ,  Bernard O. CHUKWULEBE

IPC: B22D41/58 ,  B22D11/117 ,  B22D41/42

CPC classification number: B22D41/58 ,  B22D11/117 ,  B22D41/42

Abstract: A method for maintaining the optimal argon injection flow rate which will result in production of steel slab of a chosen alloy having optimal cleanliness. The steel is cast using an argon injected slide gate. The selected steel has a known optimal argon injection flow rate Qb* for casting steel of optimal cleanliness. The method involves calculating the present steel pressure and determining the present injection flow rate conductance Gb′ of the argon injected slide gate during either of 1) a steel pressure change event; or 2) an argon flow change event. The measurements are used to calculate present argon pressure required to insure the required injection flow rate of argon into the steel for optimal cleanliness of the cast steel.

公开(公告)号：US11680331B2

公开(公告)日：2023-06-20

申请号：US16754011

申请日：2018-10-19

Applicant: ArcelorMittal

Inventor： Anirban Chakraborty ,  Pascal Bertho ,  Hassan Ghassemi-Armaki ,  Christian Allely ,  Tiago Machado Amorim

IPC: C25D3/22 ,  B32B15/01 ,  B32B7/05 ,  B23K11/11 ,  C21D6/00 ,  C21D9/46 ,  C22C18/00 ,  C22C38/02 ,  C22C38/06 ,  C22C38/22 ,  C22C38/38 ,  C23F17/00

CPC classification number: C25D3/22 ,  B23K11/11 ,  B32B7/05 ,  B32B15/012 ,  C21D6/002 ,  C21D6/005 ,  C21D6/008 ,  C21D9/46 ,  C22C18/00 ,  C22C38/02 ,  C22C38/06 ,  C22C38/22 ,  C22C38/38 ,  C23F17/00 ,  B32B2250/02 ,  B32B2605/08 ,  C21D2211/001 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008

Abstract: A steel sheet coated with a coating comprising from 10 to 40% of nickel, the balance being zinc, such steel sheet having a microstructure comprising from 1 to 50% of residual austenite, from 1 to 60% of martensite and optionally at least one element chosen from: bainite, ferrite, cementite and pearlite, and the following chemical composition in weight: 0.10

公开(公告)号：US11674209B2

公开(公告)日：2023-06-13

申请号：US16769912

申请日：2018-10-22

Applicant: ArcelorMittal

Inventor： Michel Bordignon ,  Jonas Staudte

IPC: C21D1/26 ,  C23C2/02 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C23C2/06 ,  C25D3/30

CPC classification number: C23C2/02 ,  C21D1/26 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C23C2/06 ,  C25D3/30

Abstract: A hot-dip coated steel substrate coated with a layer of Sn directly topped by a zinc or an aluminum based coating is provided, the steel substrate having the following chemical composition in weight percent:

0.10≤C≤0.4%,

1.2≤Mn≤6.0%,

0.3≤Si≤2.5%,

Al≤2.0%,

and on a purely optional basis, one or more elements such as

P

公开(公告)号：US20230175104A1

公开(公告)日：2023-06-08

申请号：US18016396

申请日：2021-07-12

Applicant: ArcelorMittal

Inventor： Astrid PERLADE ,  Kangying ZHU ,  Frédéric KEGEL ,  Blandine REMY

IPC: C22C38/04 ,  C22C38/14 ,  C22C38/12 ,  C22C38/06 ,  C22C38/02 ,  C22C38/00 ,  C21D9/46 ,  C21D8/02 ,  C21D6/00

CPC classification number: C22C38/04 ,  C22C38/14 ,  C22C38/12 ,  C22C38/06 ,  C22C38/02 ,  C22C38/002 ,  C22C38/001 ,  C21D9/46 ,  C21D8/0205 ,  C21D8/0236 ,  C21D8/0263 ,  C21D6/008 ,  C21D6/005 ,  C21D2211/001 ,  C21D2211/005 ,  C21D2211/008 ,  C21D8/0226 ,  B23K11/11

Abstract: A cold rolled and annealed steel sheet, made of a steel having a composition including, by weight percent



C: 0.03-0.18%
Mn: 6.0-11.0%
Al: 0.2-3%
Mo: 0.05-0.5%
B: 0.0005-0.005%
S≤0.010%
P≤0.020%
N≤0.008%
and including optionally one or more of the following elements, in weight percentage:
Si≤1.20%
Ti≤0.050%
Nb≤0.050%
Cr≤0.5%
V≤0.2%
the remainder of the composition being iron and unavoidable impurities resulting from the smelting, the steel sheet having a microstructure including, in surface fraction,

from 30% to 55% of retained austenite,
from 45% to 70% of ferrite,
less than 5% of fresh martensite
a carbon [C]A and manganese [Mn]A content in austenite, expressed in weight percent, satisfying








[C]A*[Mn]A/((0.1+C %2)*(Mn %+2))≥1.10





and an inhomogeneous repartition of manganese characterized by a manganese distribution with a slope above or equal to −30.

公开(公告)号：US11668002B2

公开(公告)日：2023-06-06

申请号：US16642559

申请日：2018-07-20

Applicant: ARCELORMITTAL

Inventor： Daniel Chaleix ,  Christian Allely ,  Eric Silberberg ,  Sergio Pace ,  Lucie Gaouyat

IPC: C23C2/02 ,  C23C14/16 ,  C23C2/06 ,  C23C2/12 ,  C23C2/36 ,  C23C14/02 ,  C23C14/24 ,  C23C14/35 ,  C23C14/56 ,  C23C28/02

CPC classification number: C23C14/16 ,  C23C2/02 ,  C23C2/06 ,  C23C2/12 ,  C23C2/36 ,  C23C14/028 ,  C23C14/24 ,  C23C14/35 ,  C23C14/562 ,  C23C28/023

Abstract: A coated metallic substrate including at least a first coating of aluminum, such first coating having a thickness below 5 μm and being directly topped by a second coating including from 0.5 to 5.9% by weight of magnesium, the balance being zinc.

公开(公告)号：US20230160033A1

公开(公告)日：2023-05-25

申请号：US18094503

申请日：2023-01-09

Applicant: ArcelorMittal

Inventor： Anirban CHAKRABORTY ,  Hassan GHASSEMI-ARMAKI

IPC: C21D9/46 ,  C21D8/02 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/32 ,  C23C2/06 ,  C23C2/28 ,  C23C2/40 ,  C23C28/02 ,  B23K11/11

CPC classification number: C21D9/46 ,  B23K11/11 ,  C21D8/0273 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/32 ,  C23C2/06 ,  C23C2/28 ,  C23C2/40 ,  C23C28/025 ,  C23C28/027 ,  B23K2103/04 ,  C21D2211/009

Abstract: A galvannealed steel sheet having a steel substrate coated with a first alloy layer with iron and nickel directly topped by a second alloy layer based on zinc, the first and second alloyed layers being alloyed through diffusion such that the second alloy layer includes from 5 to 15 wt.% of iron, from 0 to 15 wt.% of nickel, a balance being zinc.

公开(公告)号：US11623436B2

公开(公告)日：2023-04-11

申请号：US17299477

申请日：2019-12-10

Applicant: ArcelorMittal

Inventor： Renaud Vignal ,  Paul Wouters ,  Lionel Fourdrinier

IPC: B32B37/10 ,  B32B37/00 ,  H01L31/18 ,  H01L31/046 ,  H02S20/25

Abstract: A lamination device for laminating a photovoltaic stack on a profiled metallic panel, the lamination device including a lid covered on its underside with an upper flexible pressure membrane so as to form an airtight upper chamber that may be ventilated or evacuated and/or including an upper heating device whose bottom side has a crenellated profile, the device also including a chassis covered on its top with a lower flexible pressure membrane so as to form an airtight lower chamber that may be ventilated or evacuated and/or including a lower heating device whose upper side has a cross-section which differs from the crenellated profile of the bottom side of the upper heating device, wherein the lid is capable of sealably laying on the chassis so that the cavity thus formed is airtight and may be ventilated or evacuated. A corresponding process is also provided.

公开(公告)号：US11618931B2

公开(公告)日：2023-04-04

申请号：US15322947

申请日：2015-07-03

Applicant: ArcelorMittal

Inventor： Rashmi Ranjan Mohanty ,  Hyun Jo Jun ,  Dongwei Fan

IPC: C21D9/46 ,  C21D1/26 ,  C21D1/25 ,  C22C38/06 ,  C22C38/02 ,  C22C38/28 ,  C22C38/26 ,  C21D6/00 ,  C22C38/38 ,  C22C38/34 ,  C21D9/48 ,  C21D8/02 ,  C21D1/19 ,  C21D8/04

Abstract: A method for producing a high strength steel sheet having a yield strength YS of at least 850 MPa, a tensile strength TS of at least 1180 MPa, a total elongation of at least 14% and a hole expansion ratio HER of at least 30%. The chemical composition of the steel contains: 0.15%≤C≤0.25%, 1.2%≤Si≤1.8%, 2%≤Mn≤2.4%, 0.1%≤Cr≤0.25%, Nb≤0.05%, Ti≤0.05%, Al≤0.50%, the remainder being Fe and unavoidable impurities. The sheet is annealed at an annealing temperature TA higher than Ac3 but less than 1000° C. for more than 30 s, by cooling it to a quenching temperature QT between 275° C. and 325° C., at a cooling speed sufficient to have, just after quenching, a structure consisting of austenite and at least 50% of martensite, the austenite content en.) being such that the final structure can contain between 3% and 15% of residual austenite and between 85 and 97% of the sum of martensite and bainite, without ferrite, heated to a partitioning temperature PT between 420° C. and 470° C. and maintained at this temperature for time between 50 s and 150 s and cooled to the room temperature.

公开(公告)号：US20230058956A1

公开(公告)日：2023-02-23

申请号：US17783926

申请日：2020-12-15

Applicant: ArcelorMittal

Inventor： Dorien DE KNIJF ,  Lode DUPREZ ,  Koenraad THEUWISSEN ,  Tom WATERSCHOOT

IPC: C21D8/02 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/00 ,  C22C38/60 ,  C22C38/12 ,  C22C38/14

Abstract: A hot rolled steel sheet having a composition including the following elements, 0.18%≤Carbon≤0.3%, 1.8%≤Manganese≤4.5%. 0.8%≤Silicon≤2%,0 001%≤Aluminum ≤0.2%, 0.1%≤Molybdenum≤1%, 0.001%≤Titanium≤0.2%, 0.0001%≤Boron≤0.01%, 0%≤Phosphorus≤0.09%, 0%≤Sulfur≤0.09%.,0%≤Nitrogen≤0.09%, 0%≤Chromium≤0.5%, 0%≤Niobium≤0.1%, 0%≤Vanadium≤0.5%, 0%≤Nickel≤1%, 0%≤Copper≤1%, 0%≤Calcium≤0.005%, 0%≤Magnesium≤0.0010% the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of said steel sheet including in area fraction, of at least 70% martensite, 8% to 25% residual austenite, wherein the shape factor of the residual austenite is between 4 and 12.