EP3548641B1 - Verfahren zur herstellung eines heissgeformten artikels sowie erhaltener artikel - Google Patents

Verfahren zur herstellung eines heissgeformten artikels sowie erhaltener artikel Download PDF

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EP3548641B1
EP3548641B1 EP17804538.1A EP17804538A EP3548641B1 EP 3548641 B1 EP3548641 B1 EP 3548641B1 EP 17804538 A EP17804538 A EP 17804538A EP 3548641 B1 EP3548641 B1 EP 3548641B1
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temperature
article
steel
hot
blank
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English (en)
French (fr)
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EP3548641A1 (de
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Shangping Chen
Christiaan Theodorus LAHAYE
Radhakanta RANA
Guido Cornelis Hensen
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Tata Steel Ijmuiden BV
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Tata Steel Ijmuiden BV
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    • 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
    • C21D1/19—Hardening; Quenching with or without subsequent tempering by interrupted quenching
    • 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
    • C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
    • 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
    • C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium 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
    • C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium 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
    • C22C38/26—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
    • 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
    • C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
    • 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
    • C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
    • 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
    • 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
    • C21D2211/001—Austenite
    • 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
    • C21D2211/002—Bainite
    • 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

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

Claims (10)

  1. Verfahren zum Heißformen eines Stahlrohlings zu einem Artikel, umfassend die folgenden Schritte:
    a. Erhitzen eines Stahlrohlings auf eine Temperatur T1 und Halten des erhitzten Rohlings auf T1 während eines Zeitraums t1, wobei T1 im Bereich von Ac1 bis Ac3+200 °C ist und wobei t1 höchstens 12 Minuten ist,
    b. Übertragen des erhitzten Rohlings an ein Heißformwerkzeug während einer Transportzeit t2, während welcher die Temperatur des erhitzten Rohlings von Temperatur T1 auf eine Temperatur T2 abnimmt, wobei T2 oberhalb von Ar1 ist und wobei die Transportzeit t2 höchstens 12 Sekunden ist,
    c. Formen des Rohlings in dem Heißformwerkzeug zu einem Artikel und dessen Abschrecken in dem Heißformwerkzeug von einer Temperatur T2 auf eine Temperatur T3 mit einer Abkühlungsgeschwindigkeit V2 von 25 °C/s oder mehr,
    d. isothermisches Halten des Artikels auf einer Temperatur T4 für einen Zeitraum t4,
    e. wobei Temperatur T3 und/oder Temperatur T4 zwischen Ms und Mf ist und wobei t4 mehr als 10 Sekunden und weniger als 10 Minuten ist,
    f. Abkühlen des Artikels von Temperatur T4 auf Raumtemperatur mit einer Abkühlungsgeschwindigkeit V4,
    wobei
    1. T3 zwischen Ms und Mf ist und wobei T4 zwischen Bs und Ms ist, oder
    2. T3 zwischen Bs und Ms ist und wobei T4 zwischen Ms und Mf ist, oder
    3. sowohl T3 als auch T4 zwischen Ms und Mf sind und bevorzugt T3 und T4 identisch sind,
    und wobei das Mikrogefüge des heißgeformten Artikels ein Komplexphasen-Mikrogefüge ist, das nach Volumenfraktion (Vol.-%) aus Folgendem besteht (Summe bis zu 100):
    • mindestens 80 Vol.-% Bainit und angelassenem Martensit, wobei der angelassene Martensit weniger als 50 Vol.-%, bevorzugt gleich oder weniger als 40 Vol.-%, bevorzugter gleich oder weniger als 30 Vol.-% ist, und
    • höchstens 20 Vol.-% Ferrit und/oder Martensit und/oder Restaustenit.
  2. Verfahren nach Anspruch 1, wobei der Artikel auf Temperatur T3 während einer Haltezeit t3 von 1 bis 180 Sekunden gehalten wird.
  3. Verfahren nach Anspruch 1, Möglichkeit 1, wobei der Artikel von Temperatur T3 auf Temperatur T4 mit einer Geschwindigkeit V3 von mindestens 15 °C/s, bevorzugt mindestens 20 °C/s, bevorzugter mindestens 30 °C/s erhitzt wird.
  4. Verfahren nach Anspruch 1, Möglichkeit 2, wobei der Artikel von Temperatur T3 auf Temperatur T4 mit einer Geschwindigkeit t3 von höchstens 15 °C/s, bevorzugt höchstens 10 °C/s, bevorzugter höchstens 8 °C/s abgekühlt wird.
  5. Verfahren nach einem der vorhergehenden Ansprüche, wobei der Artikel von Temperatur T4 auf Raumtemperatur mit einer Abkühlungsgeschwindigkeit V4, im Bereich von 0,1-20 °C/s, bevorzugt im Bereich von 1-15 °C/s, bevorzugter im Bereich von 2-10 °C/s, abgekühlt wird.
  6. Verfahren nach einem der vorhergehenden Ansprüche, wobei T1 im Bereich von Ac1 bis Ac3+150, bevorzugt Ac1 bis Ac3+100, bevorzugter im Bereich von Ac3-50 bis Ac3+50 ist und wobei t1 bevorzugt höchstens 10 Minuten ist, bevorzugter t1 im Bereich von 2-8 Min. ist und wobei der Stahlrohling mit einer Erhitzungsgeschwindigkeit V1 im Bereich von 10-25 °C/s erhitzt wird.
  7. Verfahren nach einem der Ansprüche 1-6, wobei der Stahlrohling umfasst, in Gew.-%:
    C: 0,10-0,50, bevorzugt 0,15-0,40, bevorzugter 0,15-0,35,
    Mn: 0,50-4,00, bevorzugt 1,00-3,00 bevorzugter 1,00-2,50,
    Si: ≤2,0; bevorzugt 0,1-2,0, bevorzugter 0,1-1,6,
    Al: ≤2,0, bevorzugt ≤1,0, bevorzugter ≤ 0,5,
    Cr: ≤1,5, bevorzugt ≤ 1,2, bevorzugter 0,001-1,1,
    Ti: ≤0,10, bevorzugt ≤0,05, bevorzugter ≤0,04,
    B: ≤0,008, bevorzugt ≤0,005,
    Nb: ≤0,10, bevorzugt ≤0,05, bevorzugter 0,001-0,05,
    und optional eines oder mehrere der Elemente ausgewählt ist aus
    V: ≤0,2, bevorzugt ≤0,1
    Ca: ≤0,003, bevorzugt 0,0003-0,003,
    N: ≤0,005, bevorzugt ≤0,003,
    P: <0,015,
    S: ≤ 0,03, bevorzugt <0,01.
    Mo:≤0,5, bevorzugt ≤0,05,
    Cu: ≤1,0,
    Ni: ≤1,0,
    wobei der Rest Fe und unvermeidbare Verunreinigungen ist.
  8. Verfahren nach einem der Ansprüche 1-7, wobei der Rohling mit einer zinkbasierten Beschichtung oder einer aluminiumbasierten Beschichtung oder einer organisch basierten Beschichtung oder einer beliebigen anderen Beschichtung, die ausgelegt ist zum Verringern der Oxidation und/oder Entkohlung während des Heißformvorgangs, versehen ist.
  9. Verfahren nach Anspruch 8, wobei die zinkbasierte Beschichtung eine Beschichtung ist, die 0,5-3,8 Gew.-% Al, 0,5-3,0 Gew.-% Mg, optional höchstens 0,2 Gew.-% eines oder mehrerer zusätzlicher Elemente, unvermeidbare Verunreinigungen enthält, wobei der Rest Zink ist.
  10. Heißgeformter Stahlartikel, erhalten durch das Verfahren nach einem der Ansprüche 1-6, 8 oder 9, wobei
    der Stahl umfasst, in Gew.-%:
    C: 0,10-0,50,
    Mn: 1,00-3,00
    Si: ≤ 2,0;
    Al: ≤ 2,0,
    Cr: ≤ 1,5,
    Ti: ≤ 0,10,
    B: ≤ 0,008,
    Nb: ≤ 0,10,
    und optional eines oder mehrere der Elemente ausgewählt ist aus
    V: ≤ 0,2,
    Ca: ≤ 0,003,
    N: ≤ 0,005,
    P: ≤ 0,015,
    S: ≤ 0,03,
    Mo:≤ 0,5,
    Cu: ≤ 1,0,
    Ni: ≤ 1,0,
    wobei der Rest Fe und unvermeidbare Verunreinigungen ist,
    wobei der Artikel eine Dehngrenze von mindestens 600 MPa und eine Reißfestigkeit von mindestens 1000 MPa aufweist und wobei der Artikel eine Gesamtdehnung (TE) von mindestens 6 % und einen Biegungswinkel (BA) von mindestens 45 ° aufweist.
EP17804538.1A 2016-11-29 2017-11-24 Verfahren zur herstellung eines heissgeformten artikels sowie erhaltener artikel Revoked EP3548641B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP16201179 2016-11-29
PCT/EP2017/080359 WO2018099819A1 (en) 2016-11-29 2017-11-24 Method for manufacturing a hot-formed article, and obtained article

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EP3548641A1 EP3548641A1 (de) 2019-10-09
EP3548641B1 true EP3548641B1 (de) 2020-08-26

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US (1) US20210115527A1 (de)
EP (1) EP3548641B1 (de)
JP (1) JP2020501017A (de)
KR (1) KR102477323B1 (de)
CN (1) CN110023518A (de)
CA (1) CA3067159A1 (de)
WO (1) WO2018099819A1 (de)

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ES2911655T3 (es) * 2019-06-17 2022-05-20 Tata Steel Ijmuiden Bv Tratamiento térmico de un fleje de acero laminado en frío
EP3754036B1 (de) * 2019-06-17 2022-03-02 Tata Steel IJmuiden B.V. Wärmebehandlung von hochfestem kaltgewalztem stahlband
ES2911656T3 (es) * 2019-06-17 2022-05-20 Tata Steel Ijmuiden Bv Método de tratamiento térmico de un fleje de acero laminado en frío
PT3754037T (pt) * 2019-06-17 2022-04-19 Tata Steel Ijmuiden Bv Método de tratamento térmico de uma tira de aço laminada a frio de alta resistência
CN110527908A (zh) * 2019-09-06 2019-12-03 武汉科技大学 一种中碳微纳结构贝氏体钢及其热处理方法
DE102019215053A1 (de) * 2019-09-30 2021-04-01 Thyssenkrupp Steel Europe Ag Verfahren zur Herstellung eines zumindest teilweise vergüteten Stahlblechbauteils und zumindest teilweise vergütetes Stahlblechbauteil
US20230002874A1 (en) * 2020-01-09 2023-01-05 Nippon Steel Corporation Hot-stamping formed body
CN113265581B (zh) * 2020-02-17 2022-10-21 宝山钢铁股份有限公司 一种稳定杆用钢管及其制造方法
CN111235359A (zh) * 2020-03-11 2020-06-05 三一重机有限公司 钢材热处理方法、钢材、履带板和挖掘机
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CN113308593B (zh) * 2021-05-28 2022-08-09 四川大学 一种基于碳配分和两步等温淬火的中碳硅锰低合金钢热处理工艺
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