公开(公告)号：US20170183753A1

公开(公告)日：2017-06-29

申请号：US15325690

申请日：2015-07-10

Applicant: ArcelorMittal

Inventor： Jean Marc Pipard ,  Astrid Perlade ,  Bastien Weber ,  Florence Pechenot ,  Aurelie Milani

IPC: C21D9/46 ,  C21D6/00 ,  C22C38/28 ,  C22C38/26 ,  C23C2/40 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C23C2/06 ,  C21D8/02 ,  C22C38/22

Abstract: The present invention provides a hot rolled steel sheet. The hot rolled steel sheet has a yield stress greater than 680 MPa and less than or equal to 840 MPa, at least in a direction transverse to a rolling direction, strength between 780 MPa and 950 MPa, elongation at failure greater than 10% and hole-expansion ratio (Ac) greater than or equal to 45%. The chemical composition includes, with the contents expressed by weight: 0.04%≦C≦0.08% 1.2%≦Mn≦1.9% 0.1%≦Si≦0.3% 0.07%≦Ti≦0.125% 0.05%≦Mo≦0.35% 0.15%

公开(公告)号：US20210130921A1

公开(公告)日：2021-05-06

申请号：US17087916

申请日：2020-11-03

Applicant: ArcelorMittal

Inventor： Jean Marc Pipard ,  Astrid Perlade ,  Bastien Weber ,  Florence Pechenot ,  Aurelie Milani

IPC: C21D9/46 ,  C21D8/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/14 ,  C22C38/12 ,  C21D6/00 ,  C22C38/22 ,  C22C38/26 ,  C22C38/28 ,  C23C2/06 ,  C23C2/40

Abstract: A method for the fabrication of a hot rolled steel includes providing a liquid metal comprising a certain chemical composition; carrying out a vacuum or SiCa treatment, the chemical composition including, expressed by weight 0.0005%≤Ca≤0.005%, if a SiCA treatment is carried out; dissolving quantities of Ti and N in the liquid metal so as to satisfy (% [Ti])×(% [N])

公开(公告)号：US11447844B2

公开(公告)日：2022-09-20

申请号：US17087916

申请日：2020-11-03

Applicant: ArcelorMittal

Inventor： Jean Marc Pipard ,  Astrid Perlade ,  Bastien Weber ,  Florence Pechenot ,  Aurelie Milani

IPC: C21D9/46 ,  C21D8/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/14 ,  C22C38/12 ,  C21D6/00 ,  C22C38/22 ,  C22C38/26 ,  C22C38/28 ,  C23C2/06 ,  C23C2/40 ,  C21D8/04

Abstract: A method for the fabrication of a hot rolled steel includes providing a liquid metal comprising a certain chemical composition; carrying out a vacuum or SiCa treatment, the chemical composition including, expressed by weight 0.0005%≤Ca≤0.005%, if a SiCA treatment is carried out; dissolving quantities of Ti and N in the liquid metal so as to satisfy (% [Ti])×(% [N])

公开(公告)号：US10858716B2

公开(公告)日：2020-12-08

申请号：US15325690

申请日：2015-07-10

Applicant: ArcelorMittal

Inventor： Jean Marc Pipard ,  Astrid Perlade ,  Bastien Weber ,  Florence Pechenot ,  Aurelie Milani

IPC: C21D9/46 ,  C21D8/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/14 ,  C22C38/12 ,  C21D6/00 ,  C22C38/22 ,  C22C38/26 ,  C22C38/28 ,  C23C2/06 ,  C23C2/40 ,  C21D8/04

Abstract: The present invention provides a hot rolled steel sheet with yield stress greater than 680 MPa and less than or equal to 840 MPa a tensile strength between 780 MPa and 950 MPa, elongation at failure greater than 10% and hole-expansion ratio (Ac) greater than or equal to 45%. The chemical composition includes, with the contents expressed by weight: 0.05%≤Mo≤0.35%, 0.15