公开(公告)号：US12247274B2

公开(公告)日：2025-03-11

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%, aluminum+ silicon≥6.5%, a remainder being composed of iron and unavoidable impurities caused by processing; heating said cold rolled steel sheet up to a soaking temperature between 80° 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.

公开(公告)号：US12060629B2

公开(公告)日：2024-08-13

申请号：US18077594

申请日：2022-12-08

Applicant: ArcelorMittal

Inventor： Patrick Barges ,  Ian Alberto Zuazo Rodriguez

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

CPC classification number: C22C38/08 ,  C21D8/0205 ,  C21D8/0236 ,  C21D9/46 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C21D2211/001 ,  C21D2211/005

Abstract: A method of production of a cold rolled and heat treated steel sheet having the following steps: providing a cold rolled steel sheet with a composition with the following elements, expressed in percent by weight: 0.10%≤carbon≤0.6%; 4%≤manganese≤20%; 5%≤aluminum≤15%; 0≤silicon≤2% aluminium+silicon+nickel≥6.5%; and optionally at least one of certain optional elements; a remainder being composed of iron and unavoidable impurities caused by processing; heating the cold rolled steel sheet up to a soaking temperature between 750 and 950° C. during less than 600 seconds, then cooling the sheet down to room temperature; and reheating the steel sheet to a soaking temperature of 150° C. to 600° C. during 10 s to 1000 h, then further cooling the sheet.

公开(公告)号：US11549163B2

公开(公告)日：2023-01-10

申请号：US16772379

申请日：2018-12-18

Applicant: ArcelorMittal

Inventor： Patrick Barges ,  Ian Alberto Zuazo Rodriguez

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

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 processing, 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：US12247273B2

公开(公告)日：2025-03-11

申请号：US16466959

申请日：2016-12-22

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 cold rolled and heat treated steel sheet having a composition containing the following elements, expressed in percent by weight: 0.15%≤carbon≤0.6%; 4%≤manganese≤20%; 5%≤aluminum≤15%; 0≤silicon≤2%; aluminum+silicon≥6.5%; and possibly one or more of the following 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 processing, wherein the microstructure of said steel sheet contains in area fraction, 10 to 50% of austenite, the reminder being regular ferrite and ordered ferrite of D03 structure. A manufacturing method and use of the steel sheet for making vehicle parts is also described.

公开(公告)号：US11486017B2

公开(公告)日：2022-11-01

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 ,  C21D1/26 ,  C21D6/00 ,  C21D8/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12

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

公开(公告)号：US10900105B2

公开(公告)日：2021-01-26

申请号：US14404750

申请日：2013-05-27

Applicant: ARCELORMITTAL

Inventor： Astrid Perlade ,  Ian Alberto Zuazo Rodriguez ,  Xavier Garat

IPC: C22C38/14 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12 ,  C21D8/02 ,  C21D9/46 ,  C21D6/00 ,  C21D8/04 ,  B21B1/46 ,  B21B45/02 ,  B21C47/02

Abstract: A rolled steel sheet is provided. The rolled steel sheet has a mechanical strength greater than or equal to 600 MPa and an elongation at fracture that is greater than or equal to 20%. A a method for its fabrication is also provided. The chemical composition of the steel sheet includes 0.10≤C≤0.30%, 6.0≤Mn≤15.0%, 6.0≤Al≤15.0%, and optionally one or more elements selected from among: Si≤2.0%, Ti≤0.2%, V≤0.6% and Nb≤0.3%. The remainder of the composition includes iron and the unavoidable impurities resulting from processing. The ratio of the weight of manganese to the weight of aluminum is such that Mn Al > 1.0 . The microstructure of the sheet includes ferrite, austenite and up to 5% Kappa precipitates in area fraction.

公开(公告)号：US20150147221A1

公开(公告)日：2015-05-28

申请号：US14404750

申请日：2013-05-27

Applicant: ARCELORMITTAL INVESTIGACIÓN Y DESARROLLO, S.L.

Inventor： Astrid Perlade ,  Ian Alberto Zuazo Rodriguez ,  Xavier Garat

IPC: C22C38/14 ,  B21B1/46 ,  C22C38/02 ,  C22C38/12 ,  C22C38/06 ,  C22C38/04 ,  B21B45/02 ,  B21C47/02

CPC classification number: C22C38/14 ,  B21B1/463 ,  B21B45/0203 ,  B21C47/02 ,  C21D6/005 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0436 ,  C21D8/0473 ,  C21D9/46 ,  C21D2211/001 ,  C21D2211/004 ,  C21D2211/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/12

Abstract: A rolled steel sheet is provided. The rolled steel sheet has a mechanical strength greater than or equal to 600 MPa and an elongation at fracture that is greater than or equal to 20%. A a method for its fabrication is also provided. The chemical composition of the steel sheet includes 0.10≦C≦0.30%, 6.0≦Mn≦15.0%, 6.0≦Al≦15.0%, and optionally one or more elements selected from among: Si≦2.0%, Ti≦0.2%, V≦0.6% and Nb≦0.3%. The remainder of the composition includes iron and the unavoidable impurities resulting from processing. The ratio of the weight of manganese to the weight of aluminum is such that Mn Al > 1.0 . The microstructure of the sheet includes ferrite, austenite and up to 5% Kappa precipitates in area fraction.

Abstract translation: 提供轧制钢板。 轧制钢板的机械强度大于等于600MPa，断裂伸长率大于等于20％。 还提供了一种其制造方法。 钢板的化学成分包括0.10＆lt; NlE; C＆nlE; 0.30％，6.0＆nlE; Mn＆nlE; 15.0％，6.0＆lt; A1; Al＆amp; 15.0;和任选的一种或多种选自以下的元素：Si＆NlE; 2.0％Ti＆ ％，V＆nlE; 0.6％和Nb＆nlE; 0.3％。 组合物的其余部分包括铁和由加工产生的不可避免的杂质。 锰的重量与铝的重量的比例使得Mn Al> 1.0。 片材的微观结构包括铁素体，奥氏体和面积分数中高达5％的Kappa沉淀物。