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公开(公告)号：US11319620B2
公开(公告)日：2022-05-03
申请号：US16570313
申请日：2019-09-13
Applicant: ArcelorMittal
Inventor： Rongjie Song , Narayan S. Pottore
Abstract: A martensitic steel alloy is provided. The martensitic steel alloy includes carbon from 0.22 to 0.36 wt. %, manganese from 0.5% to 2.0% wt. %, and chromium in an amount less than 0.10 wt. %. and a carbon equivalent Ceq of less than 0.44 in which Ceq=C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15. Ceq is the carbon equivalent, C, Mn, Cr, Mo, V, Ni, and Cu are in wt. % of the elements in the alloy. The alloy has an ultimate tensile strength of at least 1700 MPa.
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Patent Agency Ranking
公开(公告)号：US10131974B2
公开(公告)日：2018-11-20
申请号：US14361292
申请日：2012-11-28
Applicant: ARCELORMITTAL
Inventor： Hyun Jo Jun , Narayan S. Pottore , Nina Michailovna Fonstein
Abstract: A dual phase steel (martensite+ferrite) having a tensile strength of at least 980 MPa, and a total elongation of at least 15%. The dual phase steel may have a total elongation of at least 18%. The dual phase steel may also have a tensile strength of at least 1180 MPa. The dual phase steel may include between 0.5-3.5 wt. % Si, and more preferably between 1.5-2.5 wt. % Si.
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公开(公告)号：US20220220596A1
公开(公告)日：2022-07-14
申请号：US17708568
申请日：2022-03-30
Applicant: ArcelorMittal
Inventor： Rongjie Song , Narayan S. Pottore
Abstract: A martensitic steel alloy is provided. The martensitic steel alloy includes carbon from 0.22 to 0.36 wt. %, manganese from 0.5% to 2.0% wt. %, and chromium in an amount less than 0.10 wt. %. and a carbon equivalent Ceq of less than 0.44 in which Ceq=C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15. Ceq is the carbon equivalent, C, Mn, Cr, Mo, V, Ni, and Cu are in wt. % of the elements in the alloy. The alloy has an ultimate tensile strength of at least 1700 MPa.
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4.发明申请公开(公告)号：US20150267281A1
公开(公告)日：2015-09-24
申请号：US14361293
申请日：2012-11-28
Inventor： Rongjie Song , Narayan S. Pottore
Abstract: Martensitic steel compositions and methods of production thereof. More specifically, the martensitic steels have tensile strengths ranging from 1700 to 2200 MPa. Most specifically, the invention relates to thin gage (thickness of ≦1 mm) ultra high strength steel with an ultimate tensile strength of 1700-2200 MPa and methods of production thereof.
Abstract translation: 马氏体钢组合物及其生产方法。 更具体地说，马氏体钢的拉伸强度为1700〜2200MPa。 最具体地说，本发明涉及极限拉伸强度为1700-2200MPa的薄规格（厚度为nlE; 1mm）的超高强度钢及其生产方法。
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公开(公告)号：US11198928B2
公开(公告)日：2021-12-14
申请号：US16685315
申请日：2019-11-15
Applicant: ArcelorMittal
Inventor： Hyun Jo Jun , Narayan S. Pottore , Nina Michailovna Fonstein
Abstract: A method for producing a dual phase steel sheet is provided. The method includes providing a dual phase hot rolled steel sheet having a microstructure including ferrite and martensite and a composition including 0.1 to 0.3 wt. % C, 1.5 to 2.5 wt. % Si and 1.75 to 2.5 wt. % Mn. The steel sheet is annealed at a temperature from 750 to 875° C., water quenched to a temperature from 400 to 420° C. and subject to overaging at the temperature from 400 to 420° C. to convert the martensite in the hot rolled steel sheet to tempered martensite. The overaging is sufficient to provide the hot rolled steel sheet with a hole expansion ratio of at least 15%.
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6.发明申请MARTENSITIC STEELS WITH 1700 TO 2200 MPA TENSILE STRENGTH 审中-公开具有1700至2200 MPA拉伸强度的MARTENSITIC STEEL公开(公告)号：US20150023835A1
公开(公告)日：2015-01-22
申请号：US14361270
申请日：2012-11-28
Inventor： Rongjie Song , Narayan S. Pottore
Abstract: Martensitic steel compositions and methods of production thereof are provided. More specifically, a martensitic steel having tensile strengths ranging from 1700 to 2200 MPa are provided. Most specifically, the present invention provides thin gage (thickness of ≦1 mm) ultra high strength steel with an ultimate tensile strength of 1700 to 2200 MPa and methods of production thereof.
Abstract translation: 提供马氏体钢组合物及其生产方法。 更具体地说，提供拉伸强度为1700〜2200MPa的马氏体钢。 最具体地说，本发明提供极限拉伸强度为1700〜2200MPa的薄规格（厚度为nlE; 1mm）的超高强度钢及其制造方法。
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