公开(公告)号：US20210047707A1

公开(公告)日：2021-02-18

申请号：US17087019

申请日：2020-11-02

Applicant: ArcelorMittal

Inventor： Olga A. GIRINA ,  Damon PANAHI

IPC: C21D9/46 ,  C21D8/02 ,  C23C2/06 ,  C23C2/28 ,  C23C2/40 ,  C21D1/22 ,  C22C38/00 ,  C23C2/02 ,  B32B15/04 ,  C22C38/44 ,  C23C2/26 ,  C22C38/04 ,  C23C30/00 ,  C22C38/02 ,  C22C38/18 ,  B32B15/01 ,  C22C38/12 ,  C23C2/34 ,  B32B15/18 ,  C21D6/00 ,  C22C38/06 ,  C22C38/22 ,  C22C38/34 ,  C22C38/38

Abstract: A method for producing a coated steel sheet having a tensile strength TS of at least 1450 MPa and a total elongation TE of at least 17% includes the successive steps of providing a cold rolled steel sheet made of a steel having a chemical composition comprising, in weight %: 0.34%≤C≤0.45%, 1.50%≤Mn≤2.30%, 1.50≤Si≤2.40%, 0%

公开(公告)号：US20190010574A1

公开(公告)日：2019-01-10

申请号：US16067055

申请日：2015-12-29

Applicant: ArcelorMittal

Inventor： Olga A. GIRINA ,  Damon PANAHI

IPC: C21D9/46 ,  C22C38/38 ,  C22C38/34 ,  C22C38/22 ,  C22C38/06 ,  C21D8/02 ,  C21D6/00 ,  C23C2/06 ,  C23C2/28 ,  C23C2/40 ,  B32B15/01

Abstract: A method for producing a coated steel sheet having a tensile strength of at least 1450 MPa and a total elongation of at least 17% is provided. The method includes providing a cold rolled steel sheet having a chemical composition in weight %: 0.34%≤C≤0.45%, 1.50%≤Mn≤2.30%, 1.50%≤Si≤2.40%, 0%