公开(公告)号：US20170253941A1

公开(公告)日：2017-09-07

申请号：US15500090

申请日：2015-07-29

Applicant: ArcelorMittal

Inventor： Sebastian Cobo ,  Juan David Puerta Velasquez ,  Martin Beauvais ,  Catherine Vinci

IPC: C21D9/46 ,  C21D1/673 ,  C21D1/18 ,  C23C2/06 ,  C23C2/28 ,  C23C2/40 ,  C23F17/00 ,  C22C38/58 ,  C22C38/54 ,  C22C38/50 ,  C22C38/48 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/44 ,  C22C38/00 ,  B21D22/02 ,  C21D8/02

Abstract: The present invention provides a rolled steel sheet, for press hardening, for which the chemical composition includes, with contents expressed by weight, 0.24%≦C≦0.38%, 0.40%≦Mn≦3%, 0.10%≦Si≦0.70%, 0.015%≦Al≦0.070%, 0%≦Cr≦2%, 0.25%≦Ni≦2%, 0.015%≦Ti≦0.10%, 0%≦Nb≦0.060%, 0.0005%≦B≦0.0040%, 0.003%≦N≦0.010%, 0.0001%≦S≦0.005%, 0.0001%≦P≦0.025%, it being understood that the titanium and nitrogen content satisfy: Ti/N>3.42, and that the carbon, manganese, chromium and silicon content satisfy: 2.6   C + Mn 5.3 + Cr 13 + Si 15 ≥ 1.1  % , with the chemical composition optionally including one or more of the following elements: 0.05%≦Mo≦0.65%, 0.001%≦W≦0.30%, 0.0005%≦Ca≦0.005%, with the remainder made up of iron and inevitable impurities coming from preparation. The sheet includes a nickel content Nisurf at any point of the steel near the surface of said sheet over a depth Δ, such that Nisurf>Ninom, where Ninom designates the nominal nickel content of the steel, and such that Nimax designates the maximum nickel content within Δ: ( Ni max + Ni nom ) 2 × ( Δ ) ≥ 0.6 and such that: ( Ni max + Ni nom ) Δ ≥ 0.01 , with the depth Δ expressed in microns and the Nimax and Ninom contents expressed in percentages by weight.

公开(公告)号：US20160222486A1

公开(公告)日：2016-08-04

申请号：US15097039

申请日：2016-04-12

Applicant: ArcelorMittal

Inventor： Antoine Moulin ,  Veronique Sardoy ,  Catherine Vinci ,  Gloria Restrepo Gacess ,  Tom Watershoot ,  Mohamed Goune

IPC: C21D9/46 ,  C23C2/06 ,  C23C2/36 ,  C22C38/58 ,  C22C38/54 ,  C22C38/50 ,  C22C38/48 ,  C22C38/44 ,  C22C38/06 ,  C22C38/02 ,  C22C38/00 ,  C21D8/02 ,  C21D6/00 ,  C21D1/84 ,  B22D7/00 ,  B22D11/00 ,  C23C2/02

CPC classification number: C21D9/46 ,  B22D7/00 ,  B22D11/001 ,  C21D1/84 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0205 ,  C21D8/021 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0263 ,  C21D8/0273 ,  C21D8/0278 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/44 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58 ,  C23C2/02 ,  C23C2/06 ,  C23C2/28 ,  C23C2/36

Abstract: The present invention provides a cold-rolled and annealed Dual-Phase steel sheet having strength from 980 to 1100 MPa and a breaking elongation greater than 9%. The composition includes the contents being expressed by weight: 0.055%≦C≦0.095%, 2%≦Mn≦2.6%, 0.005%≦Si≦0.35%, S≦0.005%, P≦0.050%, 0.1≦Al≦0.3%, 0.05%≦Mo≦0.25%, 0.2%≦Cr≦0.5%, Cr+2Mo≦0.6%, Ni≦0.1%, 0.010≦Nb≦0.040%, 0.010≦Ti≦0.050%, 0.0005≦B≦0.0025%, and 0.002%≦N≦0.007%. The remainder of the composition includes iron and inevitable impurities resulting from the smelting. A manufacturing method is also provided.

Abstract translation: 本发明提供一种强度为980〜1100MPa，断裂伸长率大于9％的冷轧退火双相钢板。 该组合物包含以重量计：0.055％≤C≤0.095％，2％≤Mn≤2.6％，0.005％≤Si≤0.35％，S≤0.005％，P≤0.050％，0.1≤Al≤0.3％ ，0.05％≤Mo≤0.25％，0.2％≤Cr≤0.5％，Cr +2Mo≤0.6％，Ni≤0.1％，0.010≤Nb≤0.040％，0.010≤Ti≤0.050％，0.0005≤B≤0.0025％ 0.002％≤N≤0.007％。 组合物的其余部分包括由冶炼产生的铁和不可避免的杂质。 还提供了一种制造方法。

公开(公告)号：US20190106765A1

公开(公告)日：2019-04-11

申请号：US16213455

申请日：2018-12-07

Applicant: ArcelorMittal

Inventor： Antoine Moulin ,  Veronique Sardoy ,  Catherine Vinci ,  Gloria Restrepo Gacess ,  Tom Watershoot ,  Mohamed Goune

IPC: C21D9/46 ,  C22C38/54 ,  C21D8/02 ,  B22D7/00 ,  B22D11/00 ,  C21D1/84 ,  C21D6/00 ,  C22C38/00 ,  C22C38/02 ,  C22C38/06 ,  C22C38/44 ,  C22C38/48 ,  C22C38/50 ,  C23C2/36 ,  C22C38/58 ,  C23C2/28 ,  C23C2/02 ,  C22C38/04 ,  C23C2/06

Abstract: The present invention provides a cold-rolled and annealed Dual-Phase steel sheet having a tensile strength from 980 to 1100 MPa. The composition includes the contents being expressed by weight: 0.055%≤C≤0.095%, 2%≤Mn≤2.6%, 0.005%≤Si≤0.35%, S≤0.005%, P≤0.050%, 0.1≤Al≤0.3%, 0.05%≤Mo≤0.25%, 0.2%≤Cr≤0.5%, Cr+2 Mo≤0.6%, Ni≤0.1%, 0.010≤Nb≤0.040%, 0.010≤Ti≤0.050%, 0.0005≤B≤0.0025%, and 0.002%≤N≤0.007%. The remainder of the composition includes iron and inevitable impurities resulting from the smelting. A microstructure of the steel sheet is 40 to 65% ferrite, 35 to 50% martensite and 0 to 10% bainite. A non-recrystallized ferrite fraction is less than or equal to 15%.

公开(公告)号：US20170298465A1

公开(公告)日：2017-10-19

申请号：US15610084

申请日：2017-05-31

Applicant: ArcelorMittal

Inventor： Sebastian Cobo ,  Juan David Puerta Velasquez ,  Martin Beauvais ,  Catherine Vinci

IPC: C21D9/00 ,  B21B3/02 ,  C23C2/12 ,  C23C2/06 ,  C22C38/58 ,  C22C38/54 ,  C22C38/50 ,  C22C38/48 ,  C22C38/44 ,  C22C38/14 ,  C22C38/12 ,  C22C38/08 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C23C2/28 ,  C21D1/06 ,  C21D8/00 ,  C23C2/40

CPC classification number: C21D9/0068 ,  B21B3/02 ,  B21D22/022 ,  C21D1/06 ,  C21D1/18 ,  C21D1/673 ,  C21D8/005 ,  C21D8/02 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0263 ,  C21D8/0273 ,  C21D8/0278 ,  C21D9/46 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008 ,  C21D2211/009 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/18 ,  C22C38/38 ,  C22C38/40 ,  C22C38/44 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58 ,  C23C2/06 ,  C23C2/12 ,  C23C2/28 ,  C23C2/40 ,  C23F17/00

Abstract: The present invention provides a rolled steel sheet, for press hardening, for which the chemical composition includes, with contents expressed by weight, 0.24%≦C≦0.38%, 0.40%≦Mn≦3%, 0.10%≦Si≦0.70%, 0.015%≦Al≦0.070%, 0%≦Cr≦2%, 0.25%≦Ni≦2%, 0.015%≦Ti≦0.10%, 0%≦Nb≦0.060%, 0.0005%≦B≦0.0040%, 0.003%≦N≦0.010%, 0.0001%≦S≦0.005%, 0.0001%≦P≦0.025%, it being understood that the titanium and nitrogen content satisfy: Ti/N>3.42, and that the carbon, manganese, chromium and silicon content satisfy: 2.6  C + Mn 5.3 + Cr 13 + Si 15 ≥ 1.1  % , with the chemical composition optionally including one or more of the following elements: 0.05%≦Mo≦0.65%, 0.001%≦W≦0.30%, 0.0005%≦Ca≦0.005%, with the remainder made up of iron and inevitable impurities coming from preparation. The sheet includes a nickel content Nisurf at any point of the steel near the surface of said sheet over a depth Δ, such that Nisurf>Ninom, where Ninom designates the nominal nickel content of the steel, and such that Nimax, designates the maximum nickel content within Δ: ( Ni ma   x + Ni nom ) 2 × ( Δ ) ≥ 0.6 and such that: ( Ni max - Ni nom ) Δ ≥ 0.01 , with the depth Δ expressed in microns and the Nimax and Ninom contents expressed in percentages by weight.

公开(公告)号：US20210214816A1

公开(公告)日：2021-07-15

申请号：US17217770

申请日：2021-03-30

Applicant: ArcelorMittal

Inventor： Sebastian Cobo ,  Juan David Puerta Velasquez ,  Martin Beauvais ,  Catherine Vinci

IPC: C21D9/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C21D8/02 ,  C23C2/06 ,  C21D1/673 ,  C23C2/12 ,  C23C2/28 ,  C23C2/40 ,  C22C38/18 ,  C22C38/40 ,  C22C38/38 ,  C21D9/46 ,  B21D22/02 ,  C21D1/18 ,  C22C38/00 ,  C22C38/44 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58 ,  C23F17/00 ,  B21B3/02 ,  C21D1/06 ,  C21D8/00 ,  C22C38/12 ,  C22C38/14

Abstract: The present invention provides fabrication methods for cold rolled, precoated and press hardened steel sheets, for which the chemical composition includes, with contents expressed by weight, 0.24%≤C≤0.38%, 0.40%≤Mn≤3%, 0.10%≤Si≤0.70%, 0.015%≤Al≤0.070%, 0%≤Cr≤2%, 0.25%≤Ni≤2%, 0.015%≤Ti≤0.10%, 0%≤Nb≤0.060%, 0.0005%≤B≤0.0040%, 0.003%≤N≤0.010%, 0.0001%≤S≤0.005%, 0.0001%≤P≤0.025%, it being understood that the titanium and nitrogen content satisfy: Ti/N>3.42, and that the carbon, manganese, chromium and silicon content satisfy: 2.6C+Mn/5.3+Cr/13+Si/15≥1.1%, with the chemical composition optionally including one or more of the following elements: 0.05%≤Mo≤0.65%, 0.001%≤W≤0.30%, 0.0005%≤Ca≤0.005%, with the remainder made up of iron and inevitable impurities coming from preparation.

公开(公告)号：US10190187B2

公开(公告)日：2019-01-29

申请号：US15097039

申请日：2016-04-12

Applicant: ArcelorMittal

Inventor： Antoine Moulin ,  Veronique Sardoy ,  Catherine Vinci ,  Gloria Restrepo Gacess ,  Tom Watershoot ,  Mohamed Goune

IPC: C21D9/46 ,  C21D8/02 ,  C23C2/06 ,  C23C2/28 ,  C22C38/04 ,  C23C2/02 ,  B22D7/00 ,  B22D11/00 ,  C21D1/84 ,  C21D6/00 ,  C22C38/00 ,  C22C38/02 ,  C22C38/06 ,  C22C38/44 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58 ,  C23C2/36

Abstract: The present invention provides a cold-rolled and annealed Dual-Phase steel sheet having strength from 980 to 1100 MPa and a breaking elongation greater than 9%. The composition includes the contents being expressed by weight: 0.055%≤C≤0.095%, 2%≤Mn≤2.6%, 0.005%≤Si≤0.35%, S≤0.005%, P≤0.050%, 0.1≤Al≤0.3%, 0.05%≤Mo≤0.25%, 0.2%≤Cr≤0.5%, Cr+2Mo≤0.6%, Ni≤0.1%, 0.010≤Nb≤0.040%, 0.010≤Ti≤0.050%, 0.0005≤B≤0.0025%, and 0.002%≤N≤0.007%. The remainder of the composition includes iron and inevitable impurities resulting from the smelting. A manufacturing method is also provided.

公开(公告)号：US09845518B2

公开(公告)日：2017-12-19

申请号：US15610084

申请日：2017-05-31

Applicant: ArcelorMittal

Inventor： Sebastian Cobo ,  Juan David Puerta Velasquez ,  Martin Beauvais ,  Catherine Vinci

IPC: C21D9/00 ,  B21B3/02 ,  C22C38/58 ,  C22C38/54 ,  C22C38/50 ,  C22C38/48 ,  C22C38/44 ,  C22C38/14 ,  C22C38/12 ,  C22C38/08 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C23C2/06 ,  C23C2/12 ,  C23C2/40 ,  C23C2/28 ,  C21D8/00 ,  C21D1/06

CPC classification number: C21D9/0068 ,  B21B3/02 ,  B21D22/022 ,  C21D1/06 ,  C21D1/18 ,  C21D1/673 ,  C21D8/005 ,  C21D8/02 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0263 ,  C21D8/0273 ,  C21D8/0278 ,  C21D9/46 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008 ,  C21D2211/009 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/18 ,  C22C38/38 ,  C22C38/40 ,  C22C38/44 ,  C22C38/48 ,  C22C38/50 ,  C22C38/54 ,  C22C38/58 ,  C23C2/06 ,  C23C2/12 ,  C23C2/28 ,  C23C2/40 ,  C23F17/00

Abstract: The present invention provides a rolled steel sheet, for press hardening, for which the chemical composition includes, with contents expressed by weight, 0.24%≦C≦0.38%, 0.40%≦Mn≦3%, 0.10%≦Si≦0.70%, 0.015%≦Al≦0.070%, 0%≦Cr≦2%, 0.25%≦Ni≦2%, 0.015%≦Ti≦0.10%, 0%≦Nb≦0.060%, 0.0005%≦B≦0.0040%, 0.003%≦N≦0.010%, 0.0001%≦S≦0.005%, 0.0001%≦P≦0.025%, it being understood that the titanium and nitrogen content satisfy: Ti/N>3.42, and that the carbon, manganese, chromium and silicon content satisfy: 2.6 ⁢ C + Mn 5.3 + Cr 13 + Si 15 ≥ 1.1 ⁢ % , with the chemical composition optionally including one or more of the following elements: 0.05%≦Mo≦0.65%, 0.001%≦W≦0.30%, 0.0005%≦Ca≦0.005%, with the remainder made up of iron and inevitable impurities coming from preparation. The sheet includes a nickel content Nisurf at any point of the steel near the surface of said sheet over a depth Δ, such that Nisurf>Ninom, where Ninom designates the nominal nickel content of the steel, and such that Nimax designates the maximum nickel content within Δ: ( Ni max + Ni nom ) 2 × ( Δ ) ≥ 0.6 and such that: ( Ni max - Ni nom ) Δ ≥ 0.01 , with the depth Δ expressed in microns and the Nimax and Ninom contents expressed in percentages by weight.