公开(公告)号：US20190292622A1

公开(公告)日：2019-09-26

申请号：US16302999

申请日：2017-05-23

Applicant: ARCELORMITTAL

Inventor： Xavier GARAT ,  Ian Alberto ZUAZO RODRIGUEZ ,  Irène DE DIEGO CALDERON

IPC: C21D9/46 ,  B32B15/01 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C21D8/02 ,  C21D6/00

Abstract: A cold rolled and annealed steel sheet is provided which includes by weight: 0.6

公开(公告)号：US20240117457A1

公开(公告)日：2024-04-11

申请号：US18529599

申请日：2023-12-05

Applicant: ARCELORMITTAL

Inventor： Xavier GARAT ,  Ian Alberto ZUAZO RODRIGUEZ ,  Irène DE DIEGO CALDERON

IPC: C21D9/46 ,  B32B15/01 ,  C21D6/00 ,  C21D8/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06

CPC classification number: C21D9/46 ,  B32B15/012 ,  B32B15/013 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0205 ,  C21D8/0236 ,  C21D8/0268 ,  C22C38/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  B32B2605/00 ,  C21D2211/001 ,  C21D2211/004 ,  C21D2211/005

Abstract: A cold rolled and annealed steel sheet is provided which includes by weight: 0.6

公开(公告)号：US20190276909A1

公开(公告)日：2019-09-12

申请号：US16302977

申请日：2017-05-23

Applicant: ARCELORMITTAL

Inventor： Michel SOLER ,  Ian Alberto ZUAZO RODRIGUEZ ,  Irène DE DIEGO CALDERON

IPC: C21D9/46 ,  C21D8/02 ,  C21D6/00 ,  C22C38/12 ,  C22C38/06 ,  C22C38/02 ,  C22C38/04 ,  C22C38/00 ,  C21D1/26

Abstract: A cold rolled and annealed steel sheet includes by weight: 0.6

公开(公告)号：US20210123121A1

公开(公告)日：2021-04-29

申请号：US16772379

申请日：2018-12-18

Applicant: ArcelorMittal

Inventor： Patrick BARGES ,  Ian Alberto ZUAZO RODRIGUEZ

IPC: C22C38/08 ,  C22C38/02 ,  C22C38/06 ,  C21D8/02 ,  C21D9/46 ,  C22C38/04

Abstract: A cold rolled and heat treated steel sheet having a composition including the following elements, expressed in % by weight: 0.1%≤carbon≤0.6% 4%≤manganese≤20% 5%≤aluminum≤15% 0≤silicon≤2% aluminium+silicon+nickel≥6.5% and can possibly contain one or more of the following optional elements: 0.01%≤niobium≤0.3%, 0.01%≤titanium≤0.2% 0.01%≤vanadium≤0.6% 0.01%≤copper≤2.0% 0.01%≤nickel≤2.0% cerium≤0.1% boron≤0.01% magnesium≤0.05% zirconium≤0.05% molybdenum≤2.0% tantalum≤2.0% tungsten≤2.0% the remainder being composed of iron and unavoidable impurities caused by elaboration, wherein the microstructure of said steel sheet includes in area fraction, 10 to 50% of austenite, the austenite phase optionally including intragranular kappa carbides, the remainder being regular ferrite and ordered ferrite of D03 structure (Fe,Mn,X)3Al, optionally including up to 2% of intragranular kappa carbides (Fe,Mn)3AlCx said steel sheet presenting a ultimate tensile strength higher than or equal to 900 MPa. It also deals with a manufacturing method and with use of such grade for making vehicle parts.

公开(公告)号：US20210025041A1

公开(公告)日：2021-01-28

申请号：US17060493

申请日：2020-10-01

Applicant: ArcelorMittal

Inventor： Patrick BARGES ,  Ian Alberto ZUAZO RODRIGUEZ

IPC: C22C38/04 ,  C21D6/00 ,  C21D8/02 ,  C22C38/02 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16

Abstract: A method of production of a cold rolled and heat treated steel sheet has the following steps: providing a cold rolled steel sheet with a composition including the following elements, expressed in percent by weight: 0.15%≤carbon≤0.6%, 4%≤manganese≤20%, 5%≤aluminum≤15%, 0≤silicon≤2%, aluminium+silicon≥6.5%, a remainder being composed of iron and unavoidable impurities caused by elaboration; heating said cold rolled steel sheet up to a soaking temperature between 800 and 950° C. during less than 600 seconds, then cooling the sheet down to a temperature in a range of 600° C. to room temperature, reheating the steel sheet to a soaking temperature of 150° C. to 600° C. during 10 s to 250 h, then cooling the sheet.