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MX2018001140A - High-strength hot-rolled steel sheet. - Google Patents

High-strength hot-rolled steel sheet.

Info

Publication number
MX2018001140A
MX2018001140A MX2018001140A MX2018001140A MX2018001140A MX 2018001140 A MX2018001140 A MX 2018001140A MX 2018001140 A MX2018001140 A MX 2018001140A MX 2018001140 A MX2018001140 A MX 2018001140A MX 2018001140 A MX2018001140 A MX 2018001140A
Authority
MX
Mexico
Prior art keywords
steel sheet
rolled steel
strength hot
polygonal ferrite
total
Prior art date
Application number
MX2018001140A
Other languages
Spanish (es)
Inventor
Tanaka Yasuaki
Sugiura Natsuko
Yokoyama Takafumi
Original Assignee
Nippon Steel & Sumitomo Metal Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Steel & Sumitomo Metal Corp filed Critical Nippon Steel & Sumitomo Metal Corp
Publication of MX2018001140A publication Critical patent/MX2018001140A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226—Hot rolling
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
    • C23C2/36—Elongated material
    • C23C2/40—Plates; Strips
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/005—Ferrite
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
    • C23C2/06—Zinc or cadmium or alloys based thereon

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

This high-strength hot-rolled steel sheet has a prescribed chemical composition, said composition containing 80% or more of polygonal ferrite, no more than 5% of martensite and austenite in total, and no more than 5% of pearlite and cementite in total (percentages being expressed in terms of area), the remainder being one or more selected from bainitic ferrite and bainite. σHV, which is the standard deviation in microhardness of 50 arbitrary polygonal ferrite grains present in a range of ±100 µm from the center plane in the direction of sheet thickness, is no greater than 30. At least 5×107 Ti-containing carbides/mm2 are present in the polygonal ferrite grains. At least 50% of the Ti-containing carbides have an aspect ratio of less than 3, the aspect ratio being the ratio of the long-side length to the short-side length. The tensile strength is at least 540 MPa.
MX2018001140A 2015-07-31 2015-07-31 High-strength hot-rolled steel sheet. MX2018001140A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2015/071845 WO2017022025A1 (en) 2015-07-31 2015-07-31 High-strength hot-rolled steel sheet

Publications (1)

Publication Number Publication Date
MX2018001140A true MX2018001140A (en) 2018-04-20

Family

ID=57942560

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2018001140A MX2018001140A (en) 2015-07-31 2015-07-31 High-strength hot-rolled steel sheet.

Country Status (8)

Country Link
US (1) US20180209007A1 (en)
EP (1) EP3330394B1 (en)
JP (1) JP6485549B2 (en)
KR (1) KR102079968B1 (en)
CN (1) CN107849651B (en)
BR (1) BR112018000633A2 (en)
MX (1) MX2018001140A (en)
WO (1) WO2017022025A1 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102473782B1 (en) * 2016-09-22 2022-12-02 타타 스틸 이즈무이덴 베.뷔. Method for producing hot-rolled high-strength steel with excellent elongation-flange formability and edge fatigue performance
CN110656292A (en) * 2018-06-28 2020-01-07 上海梅山钢铁股份有限公司 440 MPa-level tensile strength low-yield-ratio high-hole-expansibility hot-rolled steel plate
CN109047692B (en) * 2018-08-22 2021-01-26 江阴兴澄特种钢铁有限公司 Ultrathin high-strength steel plate capable of being used at-60 ℃ and manufacturing method thereof
EP3998356B1 (en) * 2019-07-09 2025-08-06 JFE Steel Corporation Seamless steel pipe having exceptional resistance to sulfuric acid dew-point corrosion, and method for manufacturing said seamless steel pipe
US12139772B2 (en) * 2019-07-10 2024-11-12 Nippon Steel Corporation High strength steel sheet
CN112522568A (en) * 2019-09-19 2021-03-19 宝山钢铁股份有限公司 Fire-resistant weather-resistant steel plate/belt and manufacturing method thereof
KR102757756B1 (en) * 2020-01-17 2025-01-22 닛폰세이테츠 가부시키가이샤 Steel plates and pipes
JP7277860B2 (en) * 2020-03-19 2023-05-19 日本製鉄株式会社 steel plate
EP4137592B1 (en) * 2020-04-17 2025-06-04 Nippon Steel Corporation High-strength hot-rolled steel sheet
EP3925771A1 (en) 2020-06-16 2021-12-22 SSAB Technology AB High strength steel product and method of manufacturing the same
CN113005352B (en) * 2021-02-08 2022-04-12 大连理工大学 Method for strengthening and toughening martensitic steel by adding nano TiC
KR20240096056A (en) * 2022-12-19 2024-06-26 주식회사 포스코 Steel plate and method for manufactureing the same
JPWO2024135043A1 (en) 2022-12-23 2024-06-27
KR20250090684A (en) * 2023-12-13 2025-06-20 주식회사 포스코 Hot rolled steel sheet for vacuum train tube
WO2025234230A1 (en) * 2024-05-08 2025-11-13 日本製鉄株式会社 Steel sheet, component including same, and production method for steel sheet

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JP3426465B2 (en) 1997-04-15 2003-07-14 新日本製鐵株式会社 400-800 N / mm2 class high-strength hot-rolled steel sheet excellent in toughness and workability and method for producing the same
JP3882577B2 (en) 2000-10-31 2007-02-21 Ｊｆｅスチール株式会社 High-tensile hot-rolled steel sheet excellent in elongation and stretch flangeability, and manufacturing method and processing method thereof
JP4411005B2 (en) 2003-04-04 2010-02-10 株式会社神戸製鋼所 High-strength hot-rolled steel sheet with excellent formability
CN100360698C (en) * 2003-04-21 2008-01-09 杰富意钢铁株式会社 High-strength hot-rolled steel sheet and method for producing same
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Also Published As

Publication number Publication date
WO2017022025A1 (en) 2017-02-09
JPWO2017022025A1 (en) 2018-05-31
CN107849651A (en) 2018-03-27
KR20180019736A (en) 2018-02-26
EP3330394A1 (en) 2018-06-06
US20180209007A1 (en) 2018-07-26
EP3330394A4 (en) 2018-12-19
KR102079968B1 (en) 2020-02-21
CN107849651B (en) 2019-09-03
EP3330394B1 (en) 2020-08-26
JP6485549B2 (en) 2019-03-20
BR112018000633A2 (en) 2018-09-18

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