CA2714894A1 - Fire-resistant steel material superior in weld heat affected zone reheat embrittlement resistance and low temperature toughness and method of production of same - Google Patents

Fire-resistant steel material superior in weld heat affected zone reheat embrittlement resistance and low temperature toughness and method of production of same Download PDF

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Publication number
CA2714894A1
CA2714894A1 CA2714894A CA2714894A CA2714894A1 CA 2714894 A1 CA2714894 A1 CA 2714894A1 CA 2714894 A CA2714894 A CA 2714894A CA 2714894 A CA2714894 A CA 2714894A CA 2714894 A1 CA2714894 A1 CA 2714894A1
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CA
Canada
Prior art keywords
less
fire
steel material
low temperature
affected zone
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA2714894A
Other languages
French (fr)
Other versions
CA2714894C (en
Inventor
Masaki Mizoguchi
Yasushi Hasegawa
Yoshiyuki Watanabe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
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Nippon Steel 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 Corp filed Critical Nippon Steel Corp
Publication of CA2714894A1 publication Critical patent/CA2714894A1/en
Application granted granted Critical
Publication of CA2714894C publication Critical patent/CA2714894C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C21D1/25—Hardening, combined with annealing between 300 degrees Celsius and 600 degrees Celsius, i.e. heat refining ("Vergüten")
    • 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
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium 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
    • C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/005—Ferrite
    • 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
    • C21D2211/008—Martensite
    • 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
    • C21D9/50—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for welded joints

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

Abstract

The present invention provides a fire-resistant steel material superior in weld heat affected zone reheat embrittlement resistance and low temperature toughness when welded by large heat input and exposed to fire and a method of production of the same, that is, a material containing C: 0.012 to 0.050%, Mn: 0.80 to 2.00%, Cr: 0.80 to 1.90%, and Nb: 0.01 to less than 0.05%, restricting Cu to 0.10% or less, containing suitable quantities of Si, N, Ti, and Al, restricting the contents of Mo, B, P, S, and O, and having a balance of Fe and unavoidable impurities, having contents of C, Mn, Cr, Nb, and Cu satisfying -1200C-20Mn+30Cr-330Nb-120Cu>=-80, having a steel structure as observed by an optical microscope of an area fraction of 80% or more of a ferrite phase, and having a balance of the steel structure of a bainite phase, martensite phase, and mixed martensite-austenite structure.

Claims (5)

1. A fire-resistant steel material superior in weld heat affected zone reheat embrittlement resistance and low temperature toughness characterized by containing, by mass%, C: 0.012% to 0.050%, Si: 0.01% to 0.50%, Mn: 0.80% to 2.00%, Cr: 0.80% to 1.90%, Nb: 0.01% to 0.05%, N: 0.001% to 0.006%, Ti: 0.010% to 0.030%, and Al: 0.005% to 0.10%, further limiting the contents of Cu, Mo, B, P, S, and O
to:
Cu: 0.10% or less, Mo: less than 0.01%, B: less than 0.0003%, P: less than 0.02%, S: less than 0.01%, and O: less than 0.01%, and having a balance of Fe and unavoidable impurities, having contents of C, Mn, Cr, Nb, and Cu [mass%]
satisfying -1200C-20Mn+30Cr-330Nb-120Cu>=-80, having a steel structure as observed by an optical microscope of an area fraction of 80% or more of a ferrite phase, and having a balance of the steel structure of a bainite phase, martensite phase, and mixed martensite-austenite structure.
2. A fire-resistant steel material superior in weld heat affected zone reheat embrittlement resistance and low temperature toughness as set forth in claim 1 characterized by further containing, by mass%, one or both of V: 0.40% or less and Ni: 1.00% or less.
3. A fire-resistant steel material superior in weld heat affected zone reheat embrittlement resistance and low temperature toughness as set forth in claim 1 or 2 characterized by further containing, by mass%, Zr: 0.010% or less, Mg: 0.005% or less, Ca: 0.005% or less, Y: 0.050% or less, La: 0.050% or less, and Ce: 0.050% or less.
4. A method of production of a fire-resistant steel material superior in weld heat affected zone reheat embrittlement resistance and low temperature toughness characterized by heating a steel slab having the steel compositions as set forth in any of claims 1 to 3 to 1150 to 1300°C temperature, then hot working or hot rolling it at 800°C to 900°C temperature by a reduction ratio of 50%
or more, then allowing it to cool.
5. A method of production of a fire-resistant steel material superior in weld heat affected zone reheat embrittlement resistance and low temperature toughness characterized by applying the method of production as set forth in claim 4, then treating the steel material at a 400°C to less than 650°C temperature range for 5 minutes to 360 minutes for tempering heat treatment.
CA2714894A 2008-10-27 2009-10-15 Fire-resistant steel material superior in weld heat affected zone reheat embrittlement resistance and low temperature toughness and method of production of same Expired - Fee Related CA2714894C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2008-275900 2008-10-27
JP2008275900 2008-10-27
PCT/JP2009/068150 WO2010050394A1 (en) 2008-10-27 2009-10-15 Fire-resistant steel material with excellent resistance to reheat embrittlement and with low-temperature toughness at welded heat-affected parts, and manufacturing method thereof

Publications (2)

Publication Number Publication Date
CA2714894A1 true CA2714894A1 (en) 2010-05-06
CA2714894C CA2714894C (en) 2012-11-13

Family

ID=42128759

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2714894A Expired - Fee Related CA2714894C (en) 2008-10-27 2009-10-15 Fire-resistant steel material superior in weld heat affected zone reheat embrittlement resistance and low temperature toughness and method of production of same

Country Status (8)

Country Link
US (1) US20110002808A1 (en)
JP (1) JP4547041B2 (en)
KR (2) KR20110127289A (en)
CN (1) CN101855379B (en)
BR (1) BRPI0911160B1 (en)
CA (1) CA2714894C (en)
TW (1) TW201030157A (en)
WO (1) WO2010050394A1 (en)

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JP5381828B2 (en) * 2010-03-15 2014-01-08 新日鐵住金株式会社 Refractory steel material excellent in high-temperature strength of base metal and high-temperature ductility of weld heat-affected zone and its manufacturing method
JP5499793B2 (en) * 2010-03-15 2014-05-21 新日鐵住金株式会社 Refractory steel material excellent in high temperature strength and low temperature toughness and reheat embrittlement resistance of weld heat affected zone and its manufacturing method
EP2557184A1 (en) 2011-08-10 2013-02-13 Swiss Steel AG Hot-rolled profiled steel reinforcement for reinforced concrete with improved fire resistance and method for producing same
JPWO2014045552A1 (en) * 2012-09-19 2016-08-18 Ｊｆｅスチール株式会社 Abrasion resistant steel plate with excellent low temperature toughness and corrosion wear resistance
KR101482359B1 (en) * 2012-12-27 2015-01-13 주식회사 포스코 Method for manufacturing high strength steel plate having excellent toughness and low-yield ratio property
BR112015021658A2 (en) * 2013-03-26 2017-07-18 Jfe Steel Corp high strength thick steel plate with superior brittle crack breakability for high heat inlet welding and method for fabricating it
KR101543898B1 (en) 2013-12-24 2015-08-11 주식회사 포스코 Steel having excellent impact toughness of welding zone and welding property
CN106282787B (en) * 2016-08-09 2018-04-17 卢森加 A kind of manufacture method of cast steel material and its casting
CN107287514A (en) * 2017-06-07 2017-10-24 江苏科技大学 It is a kind of to improve the hot-short method of residual elements induction steel surface
JP7348463B2 (en) * 2019-01-11 2023-09-21 日本製鉄株式会社 steel material
JP7269467B2 (en) * 2019-01-11 2023-05-09 日本製鉄株式会社 steel
CN110527793B (en) * 2019-09-06 2021-07-20 武汉科技大学 Heat treatment method for improving low-temperature toughness of low-chromium stainless steel welding joint
CN111763881B (en) 2020-06-19 2021-09-14 钢铁研究总院 High-strength low-carbon bainite refractory steel and preparation method thereof
EP4252959A1 (en) * 2020-11-26 2023-10-04 JFE Steel Corporation Welded joint and production method therefor
CN115976426B (en) * 2023-01-29 2023-07-04 襄阳金耐特机械股份有限公司 High-strength and high-toughness martensitic heat-resistant steel

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JPH07278660A (en) * 1994-04-13 1995-10-24 Nippon Steel Corp Manufacture of steel plate for line pipe excellent in low temperature toughness and co2 corrosion resistance
JP3256401B2 (en) * 1995-02-27 2002-02-12 川崎製鉄株式会社 High heat input welding steel having heat input of 500 kJ / cm or more and method for producing the same
JPH09176730A (en) * 1995-12-27 1997-07-08 Sumitomo Metal Ind Ltd Production of thick steel plate excellent in toughness
DE60134125D1 (en) * 2000-02-28 2008-07-03 Nippon Steel Corp STEEL TUBE WITH EXCELLENT FORMABILITY AND MANUFACTURING METHOD THEREFOR
JP3518515B2 (en) * 2000-03-30 2004-04-12 住友金属工業株式会社 Low / medium Cr heat resistant steel
JP4718866B2 (en) * 2005-03-04 2011-07-06 新日本製鐵株式会社 High-strength refractory steel excellent in weldability and gas-cutting property and method for producing the same
JP4571915B2 (en) * 2006-02-08 2010-10-27 新日本製鐵株式会社 Refractory thick steel plate and manufacturing method thereof
JP4757857B2 (en) * 2006-09-04 2011-08-24 新日本製鐵株式会社 Refractory steel material excellent in high temperature strength, toughness and reheat embrittlement resistance, and production method thereof
CN101165202A (en) * 2006-10-19 2008-04-23 鞍钢股份有限公司 High-strength steel with high toughness of welding heat affected zone and manufacturing method thereof
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Also Published As

Publication number Publication date
CA2714894C (en) 2012-11-13
TW201030157A (en) 2010-08-16
US20110002808A1 (en) 2011-01-06
BRPI0911160A2 (en) 2015-10-06
CN101855379A (en) 2010-10-06
BRPI0911160B1 (en) 2019-12-03
JPWO2010050394A1 (en) 2012-03-29
CN101855379B (en) 2012-07-25
KR20110127289A (en) 2011-11-24
KR20100070366A (en) 2010-06-25
TWI346707B (en) 2011-08-11
WO2010050394A1 (en) 2010-05-06
KR101125366B1 (en) 2012-03-27
JP4547041B2 (en) 2010-09-22

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