TWI472627B - 加工性優良的高強度鋼板的製造方法 - Google Patents

加工性優良的高強度鋼板的製造方法 Download PDF

Info

Publication number
TWI472627B
TWI472627B TW101138945A TW101138945A TWI472627B TW I472627 B TWI472627 B TW I472627B TW 101138945 A TW101138945 A TW 101138945A TW 101138945 A TW101138945 A TW 101138945A TW I472627 B TWI472627 B TW I472627B
Authority
TW
Taiwan
Prior art keywords
steel sheet
mass
producing
strength steel
workability
Prior art date
Application number
TW101138945A
Other languages
English (en)
Other versions
TW201317369A (zh
Inventor
Hiroshi Hasegawa
Yoshiyasu Kawasaki
Tatsuya Nakagaito
Shinjiro Kaneko
Yasunobu Nagataki
Original Assignee
Jfe 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 Jfe Steel Corp filed Critical Jfe Steel Corp
Publication of TW201317369A publication Critical patent/TW201317369A/zh
Application granted granted Critical
Publication of TWI472627B publication Critical patent/TWI472627B/zh

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0263Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot rolling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00Layered products comprising a layer of metal
    • B32B15/01Layered products comprising a layer of metal all layers being exclusively metallic
    • B32B15/013Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of an iron alloy or steel, another layer being formed of a metal other than iron or aluminium
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226Hot rolling
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0236Cold rolling
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0252Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment with application of tension
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/04Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
    • C21D8/0421Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the working steps
    • C21D8/0436Cold rolling
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/04Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
    • C21D8/0447Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the heat treatment
    • C21D8/0473Final recrystallisation annealing
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/04Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
    • C21D8/0478Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing involving a particular surface treatment
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/46Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/001Ferrous alloys, e.g. steel alloys containing N
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/002Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/005Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/02Ferrous alloys, e.g. steel alloys containing silicon
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/04Ferrous alloys, e.g. steel alloys containing manganese
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/06Ferrous alloys, e.g. steel alloys containing aluminium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/08Ferrous alloys, e.g. steel alloys containing nickel
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/12Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/14Ferrous alloys, e.g. steel alloys containing titanium or zirconium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/16Ferrous alloys, e.g. steel alloys containing copper
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/34Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/38Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING 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
    • C23C2/00Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/02Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING 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
    • C23C2/00Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/02Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • C23C2/022Pretreatment of the material to be coated, e.g. for coating on selected surface areas by heating
    • C23C2/0224Two or more thermal pretreatments
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING 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
    • C23C2/00Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/02Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • C23C2/024Pretreatment of the material to be coated, e.g. for coating on selected surface areas by cleaning or etching
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING 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
    • C23C2/00Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/04Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
    • C23C2/06Zinc or cadmium or alloys based thereon
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING 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
    • C23C2/00Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/26After-treatment
    • C23C2/28Thermal after-treatment, e.g. treatment in oil bath
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING 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
    • C23C2/00Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/34Hot-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
    • C23C2/36Elongated material
    • C23C2/40Plates; Strips
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D2211/00Microstructure comprising significant phases
    • C21D2211/005Ferrite
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D2211/00Microstructure comprising significant phases
    • C21D2211/008Martensite

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Coating With Molten Metal (AREA)

Description

加工性優良的高強度鋼板的製造方法
本發明是有關於一種適合用於汽車零件用途的加工性優良的高強度鋼板的製造方法。
近年來,根據保護地球環境的觀點,汽車的燃料效率(fuel efficiency)提高已成為重要的課題。因此,藉由車體材料的高強度化來致力於輕薄化,並藉由車體自身的輕量化來致力於燃料效率提高的行動變得活躍。藉由如同汽車零件般地沖壓加工(stamping)或彎曲加工(bending)而成型為製品的鋼板,此鋼板被要求能夠保持高強度並且能夠承受加工的成形性。專利文獻1中藉由雙相位(dual phase)退火高錳(Mn)鋼,得到高強度延性。專利文獻2中以高Mn鋼熱軋後組織作為變韌鐵(bainite)‧麻田散鐵(martensite)組織,並藉由退火回火而使微細的殘留沃斯田鐵(austenite)形成,進而藉由成為包含回火變韌鐵和回火麻田散鐵的複合組織來改善局部延性。
[先前技術文獻] [專利文獻]
[專利文獻1]日本專利特開平1-259120號公報
[專利文獻2]日本專利特開2003-138345號公報
但是,前述的專利文獻1中,對於藉由Mn濃集(concentrate)的加工性提高未做任何研究,關於加工性可看到改善的空間。專利文獻2中,由於含有很多在高溫 下回火的變韌鐵‧麻田散鐵的組織,因此無法說具有充分的強度,而且,為了改善局部延性,殘留沃斯田鐵量被限制,而總伸長率亦不充分。
本發明的目的在於提供加工性優良的高強度鋼板的製造方法,該高強度鋼板有利地解決了上述的先前技術所擁有的問題,並且適合作為使用於汽車零件用途的鋼板,且該高強度鋼板的張力強度(tension strength,TS):980MPa以上、總伸長率(elongation rate,EL):25%以上。
本發明者們,為了製造加工性優良的高強度鋼板,從鋼板的組成成分及製造方法的觀點來反覆地潛心研究,結果發現以下的事情。即發現了:對添加了3.5%以上Mn量、0.5%以上矽(Si)量的鋼實施熱軋後,實施在到達溫度Ac1℃~Ac1+100℃下保持3分鐘的熱處理,接著以20%以上的壓下率(draft)冷軋後,在退火時,加熱至到達溫度Ac1-30℃~Ac1+100℃並保持1分鐘以上;或者對添加了3.5%以上Mn量、0.5%以上Si量的鋼實施熱軋後,以20%以上的壓下率實施冷軋,接著實施在到達溫度Ac1℃~Ac1+100℃下保持3分鐘以上的熱處理,之後,在退火時,加熱至到達溫度Ac1-30℃~Ac1+100℃並保持1分鐘以上,藉此可以達成上述的課題。
本發明以如此般的發現作為基礎,提供以下的發明。
(1)一種加工性優良的高強度鋼板的製造方法,其特徵在於,包括:準備鋼坯,鋼坯具有的組成成分包含:以 質量%計而含有碳(C):0.03%~0.35%、Si:0.5%~3.0%、Mn:3.5%~10.0%、磷(P):0.100%以下、硫(S):0.02%以下,其餘部份為鐵(Fe)及不可避免的雜質;熱軋前述鋼坯;對熱軋過的前述鋼板實施在Ac1℃~Ac1+100℃的到達溫度下保持3分鐘以上的熱處理;以20%以上的壓下率冷軋實施過熱處理的前述鋼板;對冷軋過的前述鋼板實施在Ac1-30℃~Ac1+100℃的到達溫度下保持1分鐘以上的退火。
(2)一種加工性優良的高強度鋼板的製造方法,其特徵在於,包括:準備鋼坯,鋼坯具有的組成成分包含:以質量%計而含有C:0.03%~0.35%、Si:0.5%~3.0%、Mn:3.5%~10.0%、P:0.100%以下、S:0.02%以下,其餘部份為鐵(Fe)及不可避免的雜質;熱軋前述鋼坯;以20%以上的壓下率冷軋熱軋過的前述鋼板;對實施過冷軋的前述鋼板實施在Ac1℃~Ac1+100℃的到達溫度下保持3分鐘以上的熱處理;對熱處理過的前述鋼板實施在Ac1-30℃~Ac1+100℃的到達溫度下保持1分鐘以上的退火。
(3)如(1)或(2)所述之加工性優良的高強度鋼板的製造方法,其中前述鋼坯以質量%計更含有鋁(Al):0.01%~2.00%。
(4)如(3)所述之加工性優良的高強度鋼板的製造方法,其中前述Al含有量以質量%計為0.10%~2.00%。
(5)如(1)至(4)中任一項所述之加工性優良的高 強度鋼板的製造方法,其中前述鋼坯以質量%計更含有從鉻(Cr):0.005%~2.00%、鉬(Mo):0.005%~2.00%、釩(V):0.005%~2.00%、鎳(Ni):0.005%~2.00%、銅(Cu):0.005%~2.00%中選出的至少一種的元素。
(6)如(1)至(5)中任一項所述之加工性優良的高強度鋼板的製造方法,其中前述鋼坯以質量%計更含有從鈦(Ti):0.005%~0.20%、鈮(Nb):0.005%~0.20%中選出的至少一種的元素。
(7)如(1)至(6)中任一項所述之加工性優良的高強度鋼板的製造方法,其中前述鋼坯以質量%計更含有硼(B):0.0003%~0.0050%。
(8)如(1)至(7)中任一項所述之加工性優良的高強度鋼板的製造方法,其中前述鋼坯以質量%計更含有從鈣(Ca):0.001%~0.005%、稀土金屬(Rare Earth Metals,REM):0.001%~0.005%中選出的至少一種的元素。
(9)如(1)至(8)中任一項所述之加工性優良的高強度鋼板的製造方法,更包括對實施過退火的前述鋼板實施熱浸鍍鋅(Hot dip galvanizing process)。
(10)如(1)至(8)中任一項所述之加工性優良的高強度鋼板的製造方法,更包括對前述實施過退火的鋼板實施熱浸鍍鋅,進而再實施鍍鋅的合金化處理。
(11)如(1)至(10)中任一項所述之加工性優良的高強度鋼板的製造方法,其中前述加工性優良的高強度鋼板為具有張力強度(TS):980MPa以上、總伸長率(EL): 25%以上的加工性優良的高強度鋼板。
(12)如(1)至(11)中任一項所述之加工性優良的高強度鋼板的製造方法,其中前述C含有量以質量%計為0.07%~0.25%。
(13)如(1)至(12)中任一項所述之加工性優良的高強度鋼板的製造方法,其中前述Si含有量以質量%計為0.8%~2.3%。
(14)如(1)至(13)中任一項所述之加工性優良的高強度鋼板的製造方法,其中前述Mn含有量以質量%計為3.8%~8.0%。
(15)如(1)至(14)中任一項所述之加工性優良的高強度鋼板的製造方法,其中前述Al含有量以質量%計為0.15%~1.5%。
(16)如(15)所述之加工性優良的高強度鋼板的製造方法,其中前述Al含有量以質量%計為0.20%~1.0%。
(17)如(1)至(16)中任一項所述之加工性優良的高強度鋼板的製造方法,其中前述熱處理為在Ac1℃~Ac1+100℃的到達溫度下保持30分鐘以上的熱處理。
藉由本發明,可獲得適合作為使用於汽車零件用途的鋼板的張力強度(TS):980MPa以上且總伸長率(EL):25%以上,而且加工性優良的高強度鋼板。
以下,對本發明的細節進行說明。此外,表示成分元素的含有量的「%」,只要無特別記載,則為「質量%」的意思。
1)組成成分
C:0.03%~0.35%
C是為了使麻田散鐵或回火麻田散鐵等的低溫變態相生成而使TS上升所必須的元素。而且,C亦是為了使沃斯田鐵安定而使殘留沃斯田鐵生成,並使鋼的加工性提高的有效的元素。若C量未滿0.03%,則殘留沃斯田鐵的生成變得不充分,且難以獲得高加工性。另一方面,若C量超過0.35%,則點熔接性(spot welding)會劣化。因此,C量設為0.03%~0.35%,較佳為0.07%~0.25%。
Si:0.5%~3.0%
Si是為了固熔強化鋼而使TS提高、或抑制碳化物而使殘留沃斯田鐵生成,並使鋼的加工性提高的有效的元素。為了獲得如上的效果,必須將Si量設為0.5%以上。另一方面,若Si超過3.0%,則脆性(fragility)變得明顯,且導致表面性狀或熔接性劣化。因此,Si量設為0.5%~3.0%,較佳為0.8%~2.3%。
Mn:3.5%~10.0%
Mn為固熔強化鋼而使TS提高、或促進麻田散鐵或回火麻田散鐵等的低溫變態相的生成的元素。而且,Mn是為了使沃斯田鐵安定而使殘留沃斯田鐵生成的有效的元素。為了獲得如上的效果,必須將Mn量設為3.5%以上。 另一方面,若Mn超過10.0%,則ε麻田散鐵變得容易被生成,而且加工性顯著地降低。因此,Mn量設為3.5%~10.0%,較佳為3.8%~8.0%。
P:0.100%以下
由於P藉由晶界偏析(grain boundary segregation)使鋼劣化,並且使熔接性劣化,因此期望盡可能地減低P量。但是,從製造成本的方面等來考量,P量較佳為0.100%以下。
S:0.02%以下
由於S作為MnS等的夾雜物而存在,而會使熔接性劣化,所以較佳為盡可能地減低S量。但是,從製造成本的方面等來考量,S量較佳為0.02%以下。
剩餘部分包含Fe及不可避免的雜質。視需要而可以適當地含有一種以上的以下的元素。
Al:0.10%~2.00%
Al是為了抑制碳化物的生成,且使殘留沃斯田鐵生成的有效的元素。為了獲得如上的效果,較佳為添加0.10%以上。此外,若其添加量為2.00%以下,則不會阻礙加熱時的沃斯田鐵的形成,低溫變態相變得容易獲得,因而,高強度高加工性變得容易獲得。因此,期望Al量為0.10%~2.00%。更佳為0.15%~1.5%,最佳為0.20%~1.0%。另外,從較佳效率地進行鋼的脫氧的觀點來看,較佳為使Al量含有0.01%以上。
從Cr:0.005%~2.00%、Mo:0.005%~2.00%、V: 0.005%~2.00%、Ni:0.005%~2.00%、Cu:0.005%~2.00%中選出的至少一種
Cr、Mo、V、Ni、Cu為生成麻田散鐵等的低溫變態相而高強度化的有效的元素。為了獲得如上的效果,較佳為從Cr、Mo、V、Ni、Cu中選出的至少一種的元素的含有量設為0.005%以上。此外,若Cr、Mo、V、Ni、Cu的個別的含有量為2.00%以下的話,則不會導致成本上升,而且可發現如上的效果。因此,較佳為將Cr、Mo、V、Ni、Cu的含有量個別設為0.005%~2.00%。
從Ti:0.005%~0.20%、Nb:0.005%~0.20%中選出的至少一種
Ti、Nb是為了形成碳氮化物,並藉由析出強化鋼而高強度化的有效的元素。為了獲得如上的效果,較佳為Ti、Nb的含有量設為0.005%以上。此外,若Ti、Nb的含有量為0.20%以下的話,則EL不會降低,而且可得到高強度化的效果。因此,較佳為Ti、Nb的含有量個別設為0.005%~0.20%。
B:0.0003%~0.0050%
B是為了抑制來自沃斯田鐵晶界的肥粒鐵(ferrite)生成,並使低溫變態相生成而使鋼的強度上升的有效的元素。為了獲得如上的效果,期望為含有0.0003%以上的B。此外,若為0.0050%以下的話,則不會導致成本上升,而且可發現如上的效果。因此,較佳為B的含有量設為0.0003%~0.0050%。
從Ca:0.001%~0.005%、REM:0.001%~0.005%中選出的至少一種
Ca、REM兩者皆是為了藉由硫化物的形態控制使加工性改善的有效的元素。為了獲得如上的效果,較佳為從Ca、REM中選出的至少一種的元素的含有量設為0.001%以上。此外,若Ca、REM的個別的含有量為0.005%以下的話,則不會對鋼的清淨度(Cleanliness)造成不良影響,而且可以改善上述的特性。因此,較佳為Ca、REM的含有量個別設為0.001%~0.005%。
2)製造條件
本發明的高強度鋼板以如下處理方式製造:於具有上述的組成成分的鋼坯,熱軋之後,實施酸洗,接著,以20%以上的壓下率實施冷軋後,實施在到達溫度Ac1℃~Ac1+100℃下保持3分鐘以上的熱處理;或者,於具有上述組成成分的鋼坯,熱軋之後,實施在到達溫度Ac1℃~Ac1+100℃下保持3分鐘以上的熱處理,之後,酸洗,接著以20%以上的壓下率實施冷軋。之後,進行加熱至到達溫度Ac1-30℃~Ac1+100℃並保持1分鐘以上的退火。
進而,本發明中還可以實施如下的處理:上述退火處理後,實施熱浸鍍鋅處理;或者熱浸鍍鋅處理後,進而再實施鍍鋅的合金化處理。
以下,詳細地說明。
冷軋的壓下率:20%以上
熱處理條件:在到達溫度Ac1℃~Ac1+100℃下保持3分鐘以上
本發明中,冷軋的壓下率是極為重要的。藉由以20%以上的壓下率來進行冷軋,之後的熱處理或退火時發生肥粒鐵的再結晶,可獲得微細且富延性的再結晶肥粒鐵,並提高加工性。此外,藉由肥粒鐵的微細析出,沃斯田鐵微細地被分段,而可得到更安定的殘留沃斯田鐵,並提高加工性。再者,Ac1變態點藉由以下的式子求取。
Ac1(℃)=751+500C+35Si-28Mn-16Ni-100(C≦0.15%)
Ac1(℃)=751+143C+35Si-28Mn-16Ni-30(C>0.15%)
式子中的元素符號表示鋼中的各元素的含有量(質量%)。
熱處理可於冷軋前進行,亦可於冷軋後、退火前進行。本發明中,退火前進行的熱處理是極為重要的。藉由此熱處理,Mn於沃斯田鐵中濃集,退火時可使沃斯田鐵迅速地生成。而且,由於退火時的往沃斯田鐵中的Mn濃集被促進,因此可獲得更安定的殘留沃斯田鐵,並提高加工性。到達溫度未滿Ac1時逆變態不會發生,而無法使Mn往沃斯田鐵中濃集。另一方面,若到達溫度超過Ac1+100℃,則肥粒鐵分率變少,因而,往沃斯田鐵中的Mn濃集量變小,並且沃斯田鐵變得不安定,而變得無法獲得充分的加工性。因此,熱處理的到達溫度設為Ac1℃~Ac1+100℃。
若在到達溫度Ac1℃~Ac1+100℃下的保持時間未滿3分鐘的話,Mn的擴散不會充分地發生,往沃斯田鐵中的 Mn濃集量變小,並且沃斯田鐵變得不安定,而變得無法獲得充分的加工性。因此,熱處理的保持時間設為3分鐘以上,較佳為30分鐘以上。
退火條件:在到達溫度Ac1-30℃~Ac1+100℃下保持1分鐘以上。
藉由前述退火前的熱處理,可獲得具有Mn濃集部的冷軋材,然而未滿Ac1-30℃時逆變態(由肥粒鐵朝沃斯田鐵的變態)不會充分地發生,無法獲得良好的加工性。另一方面,若到達溫度超過Ac1+100℃,則藉由逆變態的沃斯田鐵的生成量增加,因而退火後生成的麻田散鐵的量過度地增加,並且無法獲得良好的加工性。因此,退火時的到達溫度設為Ac1-30℃~Ac1+100℃。
若保持時間未滿1分鐘的話,藉由逆變態的沃斯田鐵的生成變得不充分,並且無法獲得良好的加工性。因此,保持時間設為1分鐘以上。
進行了上述的退火之後,冷卻至室溫。於進行熱浸鍍鋅處理、鍍鋅的合金化處理的場合,較佳為於上述退火後冷卻至室溫的期間中,進行熱浸鍍鋅處理,或進而再進行鍍鋅的合金化處理。
熱浸鍍鋅處理較佳為以下述方式進行:浸漬藉由上述所得的鋼板(退火後的鋼板)於440℃以上500℃以下的熱浸鍍鋅浴中,之後,藉由氣體擦拭(gas wiping)等調整鍍覆附著量。熱浸鍍鋅處理較佳為使用Al量為0.08質量%~0.18質量%的鍍鋅浴。進而,鍍鋅的合金化處理較佳為 於460℃以上580℃以下的溫度範圍保持1秒以上40秒以下來進行合金化。
於冷軋鋼板、熱浸鍍鋅鋼板、合金化熱浸鍍鋅鋼板上,可進行調質軋壓(temper rolling),而該調質軋壓以形狀矯正或表面粗度的調整等為目的。而且,亦可實施樹脂塗佈或油脂塗佈等的各種塗佈處理。
其它的製造方法的條件雖然並沒有特別限定,但較佳為在以下的條件下進行。
為了防止巨觀沉析(macrosegregation),鋼坯較佳以連續鑄造法製造,但是亦可藉由造塊法(ingot making method)、薄鋼坯鑄造法來製造。熱軋鋼坯時,可將鋼坯暫時冷卻至室溫,之後再加熱而進行熱軋;亦可不將鋼坯冷卻至室溫,便裝入加熱爐而進行熱軋。或者,亦可應用僅進行些許的保熱後便直接熱軋的節省能源程序。於加熱鋼坯的場合,為了可使碳化物溶解、防止滾動負載(rolling load)的增大,較佳為加熱至1100℃以上。另外,為了防止氧化損失量(scale loss)的增大,較佳為鋼坯的加熱溫度設為1300℃以下。
熱軋鋼坯時,從即便降低鋼坯的加熱溫度亦可防止軋延(rolling)時的缺陷的觀點來看,亦可加熱粗軋延後的粗條。而且,連接同類的粗條,連續地進行最後滾製(finish rolling),可應用所謂的連續軋延(continuous rolling)。
由於最後滾製有使異向性(anisotropy)增大、使冷軋‧退火後的加工性降低的情形,因此較佳以Ar3變態點以上 的最後處理溫度來進行。而且,為了滾動負載的降低或形狀‧材質的均一化,較佳為進行使最後滾製的全路徑或一部分的路徑的摩擦係數成為0.1~0.25的潤滑軋延。從鋼板形狀安定性的觀點來看,較佳為捲繞條件設為350℃以上。此外,由於在超過650℃的溫度下捲繞的話,則鋼板表面的氧化層不均變得明顯,且表面品質降低,因此較佳為捲繞溫度設為650℃以下。
捲繞後的鋼板藉由酸洗等去除鏽皮後,以上述的條件實施熱處理、冷軋、退火、熱浸鍍鋅。
[實例]
藉由真空熔解爐熔製表1所示的組成成分的鋼,並且軋延形成鋼坯(表1中,氮(N)為不可避免的雜質)。將這些鋼坯加熱至1200℃後粗軋延,最後滾製後在550℃下捲繞,並且形成板厚2.3mm的熱軋板。接著,在表2、表3所示的條件下進行熱處理,酸洗後,在表2、表3所示的條件下冷軋,製造冷軋鋼板並進行退火。此外,對於一部份鋼坯,熱軋‧酸洗後,在表2、表3所示的條件下冷軋,接著在表2、表3所示的條件下進行熱處理後,進行退火。退火為模擬箱型退火爐、連續退火線、連續熱浸鍍鋅線而在實驗室進行,並且製作出冷軋鋼板、熱浸鍍鋅鋼板及合金化熱浸鍍鋅鋼板。再者,熱浸鍍鋅鋼板為藉由如下的方法製作成:退火後、浸漬於460℃的熱浸鍍鋅浴中、使每一面的鍍覆附著量35g/m2~45g/m2的鍍鋅(雙面鍍覆)形成後,以平均冷卻速度10℃/秒來冷卻;合金化熱浸鍍鋅 鋼板為藉由如下的方法製作成:鍍鋅形成後在560℃下進行30秒的合金化處理,以平均冷卻速度10℃/秒來冷卻。對於所得到的冷軋鋼板及熱浸鍍鋅鋼板、合金化熱浸鍍鋅鋼板,以與軋延方向垂直的方向為張力方向的方式採取JIS5號張力試驗片,並以應變率(strain rate)10-3/秒來進行張力試驗。結果表示於表2、表3。
在本發明例中,確認了TS為980MPa以上且EL為25%以上,並且具有高強度和加工性。另一方面,比較例中,TS、EL的至少一者較差。
[產業上的利用可能性]
藉由本發明可獲得張力強度(TS):980MPa以上、總伸長率(EL):25%以上的加工性優良的高強度鋼板。若本發明的高強度鋼板使用於汽車零件用途的話,可對汽車的輕量化做出貢獻、並且可大大地對汽車車體的高性能化做出貢獻。

Claims (14)

  1. 一種加工性優良的高強度鋼板的製造方法,其特徵在於,包括:準備鋼坯,前述鋼胚具有的組成成分包含:以質量%計而含有C:0.03%~0.35%、Si:0.5%~3.0%、Mn:3.5%~10.0%、P:0.100%以下、S:0.02%以下,其餘部份為Fe及不可避免的雜質;熱軋前述鋼坯而形成鋼板;對熱軋過的前述鋼板實施在Ac1℃~Ac1+100℃的到達溫度下保持3分鐘以上的熱處理;以20%以上的壓下率冷軋實施過熱處理的前述鋼板;對冷軋過的前述鋼板實施在Ac1-30℃~Ac1+100℃的到達溫度下保持1分鐘以上的退火。
  2. 一種加工性優良的高強度鋼板的製造方法,其特徵在於,包括:準備鋼坯,前述鋼胚具有的組成成分包含:以質量%計而含有C:0.03%~0.35%、Si:0.5%~3.0%、Mn:3.5%~10.0%、P:0.100%以下、S:0.02%以下,其餘部份為Fe及不可避免的雜質;熱軋前述鋼坯而形成鋼板;以20%以上的壓下率冷軋熱軋過的前述鋼板;對實施過冷軋的前述鋼板實施在Ac1℃~Ac1+100℃的到達溫度下保持3分鐘以上的熱處理;對熱處理過的前述鋼板實施在Ac1-30℃~Ac1+100℃ 的到達溫度下保持1分鐘以上的退火。
  3. 如申請專利範圍第1項所述之加工性優良的高強度鋼板的製造方法,其中前述鋼坯更含有以下A群~E群中的至少一群:A群:以質量%計,Al:0.01%~2.00%;B群:以質量%計,從Cr:0.005%~2.00%、Mo:0.005%~2.00%、V:0.005%~2.00%、Ni:0.005%~2.00%、Cu:0.005%~2.00%中選出的至少一種的元素;C群:以質量%計,從Ti:0.005%~0.20%、Nb:0.005%~0.20%中選出的至少一種的元素D群:以質量%計,B:0.0003%~0.0050%;E群:以質量%計,從Ca:0.001%~0.005%、REM:0.001%~0.005%中選出的至少一種的元素。
  4. 如申請專利範圍第2項所述之加工性優良的高強度鋼板的製造方法,其中前述鋼坯更含有以下A群~E群中的至少一群:A群:以質量%計,Al:0.01%~2.00%;B群:以質量%計,從Cr:0.005%~2.00%、Mo:0.005%~2.00%、V:0.005%~2.00%、Ni:0.005%~2.00%、Cu:0.005%~2.00%中選出的至少一種的元素;C群:以質量%計,從Ti:0.005%~0.20%、Nb:0.005%~0.20%中選出的至少一種的元素D群:以質量%計,B:0.0003%~0.0050%;E群:以質量%計,從Ca:0.001%~0.005%、REM: 0.001%~0.005%中選出的至少一種的元素。
  5. 如申請專利範圍第3項或第4項所述之加工性優良的高強度鋼板的製造方法,其中前述Al含有量以質量%計為0.10%~2.00%。
  6. 如申請專利範圍第1項至第4項中任一項所述之加工性優良的高強度鋼板的製造方法,更包括對實施過退火的前述鋼板實施熱浸鍍鋅。
  7. 如申請專利範圍第1項至第4項中任一項所述之加工性優良的高強度鋼板的製造方法,更包括對實施過退火的前述鋼板實施熱浸鍍鋅,進而再實施鍍鋅的合金化處理。
  8. 如申請專利範圍第1項至第4項中任一項所述之加工性優良的高強度鋼板的製造方法,其中前述加工性優良的高強度鋼板為具有張力強度(TS):980MPa以上、總伸長率(EL):25%以上的加工性優良的高強度鋼板。
  9. 如申請專利範圍第1項至第4項中任一項所述之加工性優良的高強度鋼板的製造方法,其中前述C含有量以質量%計為0.07%~0.25%。
  10. 如申請專利範圍第1項至第4項中任一項所述之加工性優良的高強度鋼板的製造方法,其中前述Si含有量以質量%計為0.8%~2.3%。
  11. 如申請專利範圍第1項至第4項中任一項所述之加工性優良的高強度鋼板的製造方法,其中前述Mn含有量以質量%計為3.8%~8.0%。
  12. 如申請專利範圍第3項或第4項所述之加工性優 良的高強度鋼板的製造方法,其中前述Al含有量以質量%計為0.15%~1.5%。
  13. 如申請專利範圍第3項或第4項所述之加工性優良的高強度鋼板的製造方法,其中前述Al含有量以質量%計為0.20%~1.0%。
  14. 如申請專利範圍第1項至第4項中任一項所述之加工性優良的高強度鋼板的製造方法,其中前述熱處理為在Ac1℃~Ac1+100℃的到達溫度下保持30分鐘以上的熱處理。
TW101138945A 2011-10-24 2012-10-22 加工性優良的高強度鋼板的製造方法 TWI472627B (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2011232600 2011-10-24

Publications (2)

Publication Number Publication Date
TW201317369A TW201317369A (zh) 2013-05-01
TWI472627B true TWI472627B (zh) 2015-02-11

Family

ID=48167401

Family Applications (1)

Application Number Title Priority Date Filing Date
TW101138945A TWI472627B (zh) 2011-10-24 2012-10-22 加工性優良的高強度鋼板的製造方法

Country Status (7)

Country Link
US (1) US9617614B2 (zh)
EP (1) EP2772556B1 (zh)
JP (1) JP5532188B2 (zh)
KR (1) KR101613806B1 (zh)
CN (1) CN103890202B (zh)
TW (1) TWI472627B (zh)
WO (1) WO2013061545A1 (zh)

Families Citing this family (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150176109A1 (en) * 2013-12-20 2015-06-25 Crs Holdings, Inc. High Strength Steel Alloy and Strip and Sheet Product Made Therefrom
RU2659549C2 (ru) 2014-01-06 2018-07-02 Ниппон Стил Энд Сумитомо Метал Корпорейшн Горячеформованный элемент и способ его изготовления
US10774405B2 (en) 2014-01-06 2020-09-15 Nippon Steel Corporation Steel and method of manufacturing the same
WO2015158731A1 (en) * 2014-04-15 2015-10-22 Thyssenkrupp Steel Europe Ag Method for producing a cold-rolled flat steel product with high yield strength and flat cold-rolled steel product
WO2016001705A1 (en) 2014-07-03 2016-01-07 Arcelormittal Method for manufacturing a high strength steel sheet having improved formability and ductility and sheet obtained
WO2016001699A1 (en) * 2014-07-03 2016-01-07 Arcelormittal Method for manufacturing a high strength steel sheet having improved formability and sheet obtained
WO2016001703A1 (en) 2014-07-03 2016-01-07 Arcelormittal Method for manufacturing a high strength steel sheet and sheet obtained by the method
JP6179674B2 (ja) * 2014-10-30 2017-08-16 Jfeスチール株式会社 高強度鋼板、高強度溶融亜鉛めっき鋼板、高強度溶融アルミニウムめっき鋼板および高強度電気亜鉛めっき鋼板、ならびに、それらの製造方法
WO2016067624A1 (ja) * 2014-10-30 2016-05-06 Jfeスチール株式会社 高強度鋼板、高強度溶融亜鉛めっき鋼板、高強度溶融アルミニウムめっき鋼板および高強度電気亜鉛めっき鋼板、ならびに、それらの製造方法
RU2727484C2 (ru) * 2014-12-16 2020-07-21 Грир Стил Компани Стальные композиции, способы их получения и их применение в производстве гильз патрона кольцевого воспламенения
CN104846274B (zh) * 2015-02-16 2017-07-28 重庆哈工易成形钢铁科技有限公司 热冲压成形用钢板、热冲压成形工艺及热冲压成形构件
DE102015112886A1 (de) * 2015-08-05 2017-02-09 Salzgitter Flachstahl Gmbh Hochfester aluminiumhaltiger Manganstahl, ein Verfahren zur Herstellung eines Stahlflachprodukts aus diesem Stahl und hiernach hergestelltes Stahlflachprodukt
US10858717B2 (en) * 2015-08-11 2020-12-08 Jfe Steel Corporation Material for high strength steel sheets, hot rolled material for high strength steel sheets, hot-rolled and annealed material for high strength steel sheets, high strength steel sheet, high strength hot-dip-coated steel sheet, high strength electroplated steel sheet, and method of manufacturing same
JP6222198B2 (ja) * 2015-10-19 2017-11-01 Jfeスチール株式会社 ホットプレス部材およびその製造方法
JP6168118B2 (ja) * 2015-10-19 2017-07-26 Jfeスチール株式会社 ホットプレス部材およびその製造方法
KR101677396B1 (ko) * 2015-11-02 2016-11-18 주식회사 포스코 성형성 및 구멍확장성이 우수한 초고강도 강판 및 이의 제조방법
CN108291283B (zh) 2015-11-26 2020-07-10 杰富意钢铁株式会社 高强度热浸镀锌钢板及用于其的热轧钢板和冷轧钢板的制造方法、高强度热浸镀锌钢板
JP6443375B2 (ja) * 2016-03-29 2018-12-26 Jfeスチール株式会社 ホットプレス部材およびその製造方法
US20190276907A1 (en) * 2016-04-19 2019-09-12 Jfe Steel Corporation Steel sheet, coated steel sheet, and methods for manufacturing same
EP3447160A4 (en) * 2016-04-19 2019-03-06 JFE Steel Corporation STEEL PLATE, STEEL PLATE ELEMENT AND MANUFACTURING METHOD THEREFOR
TWI601849B (zh) * 2016-06-08 2017-10-11 China Steel Corp Method for manufacturing thermoformed zinc-based plated steel sheet and hot stamping method thereof
KR101798771B1 (ko) * 2016-06-21 2017-11-17 주식회사 포스코 항복강도가 우수한 초고강도 고연성 강판 및 그 제조방법
JP6460053B2 (ja) 2016-06-27 2019-01-30 Jfeスチール株式会社 高強度合金化溶融亜鉛めっき鋼板およびその製造方法
CN106244918B (zh) * 2016-07-27 2018-04-27 宝山钢铁股份有限公司 一种1500MPa级高强塑积汽车用钢及其制造方法
KR101839235B1 (ko) 2016-10-24 2018-03-16 주식회사 포스코 구멍확장성 및 항복비가 우수한 초고강도 강판 및 그 제조방법
KR102242067B1 (ko) * 2016-11-16 2021-04-19 제이에프이 스틸 가부시키가이샤 고강도 강판 및 그 제조 방법
JP6213696B1 (ja) * 2016-12-05 2017-10-18 新日鐵住金株式会社 高強度鋼板
CN107236891A (zh) * 2017-06-12 2017-10-10 苏州双金实业有限公司 一种环保型高强度钢材
KR101940912B1 (ko) * 2017-06-30 2019-01-22 주식회사 포스코 액상금속취화 균열 저항성이 우수한 강판 및 그 제조방법
KR101977491B1 (ko) 2017-11-08 2019-05-10 주식회사 포스코 냉간 성형성이 우수한 초고강도 고연성 강판 및 그 제조방법
JP6699711B2 (ja) * 2017-11-28 2020-05-27 Jfeスチール株式会社 高強度鋼帯の製造方法
KR102708307B1 (ko) 2018-02-07 2024-09-20 타타 스틸 네덜란드 테크날러지 베.뷔. 고강도 열간 압연 또는 냉간 압연 및 어닐링된 강 및 그 제조 방법
US11788163B2 (en) 2018-03-30 2023-10-17 Jfe Steel Corporation High-strength steel sheet and method for manufacturing same
KR20200123473A (ko) 2018-03-30 2020-10-29 제이에프이 스틸 가부시키가이샤 고강도 강판 및 그 제조 방법
TWI688664B (zh) * 2018-04-03 2020-03-21 日商日本製鐵股份有限公司 鋼板及鋼板的製造方法
JP6683292B2 (ja) * 2018-04-03 2020-04-15 日本製鉄株式会社 鋼板及び鋼板の製造方法
WO2021089851A1 (en) * 2019-11-08 2021-05-14 Ssab Technology Ab Medium manganese steel product and method of manufacturing the same
KR102360396B1 (ko) * 2020-04-28 2022-02-08 현대제철 주식회사 고강도 및 고성형성을 가지는 강판 및 그 제조방법

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01259120A (ja) * 1988-04-11 1989-10-16 Nisshin Steel Co Ltd 延性の良好な超高強度鋼材の製造方法
JPH07188834A (ja) * 1993-12-27 1995-07-25 Nkk Corp 高延性を有する高強度鋼板およびその製造方法
TW200600592A (en) * 2004-03-11 2006-01-01 Nippon Steel Corp A high strength hot-dip galvanized steel sheet composed of composite microstructure having excellent formability and hole expandability, and a method for production the same
CN1788099A (zh) * 2003-06-19 2006-06-14 新日本制铁株式会社 成形性优良的高强度钢板及其制造方法
JP2007046146A (ja) * 2004-11-15 2007-02-22 Nippon Steel Corp 高ヤング率鋼板、それを用いた溶融亜鉛めっき鋼板、合金化溶融亜鉛めっき鋼板、高ヤング率鋼管、高ヤング率溶融亜鉛めっき鋼管、及び高ヤング率合金化溶融亜鉛めっき鋼管、並びにそれらの製造方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4047979A (en) 1976-10-08 1977-09-13 United States Steel Corporation Heat treatment for improving the toughness of high manganese steels
CA2387322C (en) * 2001-06-06 2008-09-30 Kawasaki Steel Corporation High-ductility steel sheet excellent in press formability and strain age hardenability, and method for manufacturing the same
JP3857939B2 (ja) 2001-08-20 2006-12-13 株式会社神戸製鋼所 局部延性に優れた高強度高延性鋼および鋼板並びにその鋼板の製造方法
CA2575241C (en) 2004-07-27 2011-07-12 Nippon Steel Corporation Steel sheet having high young's modulus, hot-dip galvanized steel sheet using the same, alloyed hot-dip galvanized steel sheet, steel pipe having high young's modulus, and methodsfor manufacturing these
US8177924B2 (en) * 2006-06-01 2012-05-15 Honda Motor Co., Ltd. High-strength steel sheet and process for producing the same
CN100567550C (zh) * 2007-05-24 2009-12-09 宝山钢铁股份有限公司 一种奥氏体不锈钢及其制造方法
CN101928875A (zh) * 2009-06-22 2010-12-29 鞍钢股份有限公司 具有良好成形性能的高强度冷轧钢板及其制备方法
CA2805834C (en) * 2010-08-12 2016-06-07 Jfe Steel Corporation High-strength cold rolled sheet having excellent formability and crashworthiness and method for manufacturing the same
CN102021472B (zh) * 2011-01-12 2013-02-06 钢铁研究总院 一种适用于连续退火工艺高强塑积汽车钢板的生产方法
JP5825119B2 (ja) * 2011-04-25 2015-12-02 Jfeスチール株式会社 加工性と材質安定性に優れた高強度鋼板およびその製造方法
JP5440672B2 (ja) * 2011-09-16 2014-03-12 Jfeスチール株式会社 加工性に優れた高強度鋼板およびその製造方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01259120A (ja) * 1988-04-11 1989-10-16 Nisshin Steel Co Ltd 延性の良好な超高強度鋼材の製造方法
JPH07188834A (ja) * 1993-12-27 1995-07-25 Nkk Corp 高延性を有する高強度鋼板およびその製造方法
CN1788099A (zh) * 2003-06-19 2006-06-14 新日本制铁株式会社 成形性优良的高强度钢板及其制造方法
TW200600592A (en) * 2004-03-11 2006-01-01 Nippon Steel Corp A high strength hot-dip galvanized steel sheet composed of composite microstructure having excellent formability and hole expandability, and a method for production the same
CN1930316A (zh) * 2004-03-11 2007-03-14 新日本制铁株式会社 成形性以及扩孔性优良的热浸镀锌复合高强度钢板及其制造方法
JP2007046146A (ja) * 2004-11-15 2007-02-22 Nippon Steel Corp 高ヤング率鋼板、それを用いた溶融亜鉛めっき鋼板、合金化溶融亜鉛めっき鋼板、高ヤング率鋼管、高ヤング率溶融亜鉛めっき鋼管、及び高ヤング率合金化溶融亜鉛めっき鋼管、並びにそれらの製造方法

Also Published As

Publication number Publication date
CN103890202B (zh) 2015-09-30
CN103890202A (zh) 2014-06-25
EP2772556B1 (en) 2018-12-19
US9617614B2 (en) 2017-04-11
KR101613806B1 (ko) 2016-04-29
WO2013061545A1 (ja) 2013-05-02
JPWO2013061545A1 (ja) 2015-04-02
US20140360632A1 (en) 2014-12-11
JP5532188B2 (ja) 2014-06-25
EP2772556A4 (en) 2015-04-01
TW201317369A (zh) 2013-05-01
KR20140075789A (ko) 2014-06-19
EP2772556A1 (en) 2014-09-03

Similar Documents

Publication Publication Date Title
TWI472627B (zh) 加工性優良的高強度鋼板的製造方法
JP5857909B2 (ja) 鋼板およびその製造方法
TWI502080B (zh) 加工性優異之高強度鋼板及其製造方法
JP5402007B2 (ja) 加工性に優れた高強度溶融亜鉛めっき鋼板およびその製造方法
JP5454746B2 (ja) 高強度冷延鋼板及びその製造方法
JP5042232B2 (ja) 成形性及びメッキ特性に優れた高強度冷延鋼板、これを用いた亜鉛系メッキ鋼板及びその製造方法
JP2017048412A (ja) 溶融亜鉛めっき鋼板、合金化溶融亜鉛めっき鋼板、およびそれらの製造方法
TWI433960B (zh) 加工性和點熔接性優異之高強度熔融鍍鋅鋼板及其製造方法
JP2012229466A (ja) 成形性及び形状凍結性に優れた高強度溶融亜鉛めっき鋼板、並びにその製造方法
JP2008291304A (ja) 深絞り性と強度−延性バランスに優れた高強度冷延鋼板および高強度溶融亜鉛めっき鋼板ならびにその製造方法
JP5256690B2 (ja) 加工性および耐衝撃特性に優れる高強度溶融亜鉛めっき鋼板およびその製造方法
JP2014019905A (ja) 溶融亜鉛めっき鋼板とその製造方法
JP2012112039A (ja) 深絞り性および焼付硬化性に優れる高強度冷延鋼板とその製造方法
JP5305149B2 (ja) 成形性に優れた溶融亜鉛めっき高強度鋼板およびその製造方法
CN116507753A (zh) 延展性优异的超高强度钢板及其制造方法
JP2010001531A (ja) 低降伏比型合金化溶融亜鉛メッキ高強度鋼板の製造方法
CN113840930A (zh) 经冷轧和涂覆的钢板及其制造方法
JP2006283071A (ja) 加工性の良好な合金化溶融亜鉛メッキ高強度鋼板の製造方法
JP6221424B2 (ja) 冷延鋼板およびその製造方法
JP5256689B2 (ja) 加工性に優れた高強度溶融亜鉛めっき鋼板およびその製造方法
JP6492869B2 (ja) 溶接性と加工性に優れた高強度冷延鋼板とその製造方法
JP5397141B2 (ja) 合金化溶融亜鉛めっき鋼板およびその製造方法
JP2013076139A (ja) めっき密着性と成形性に優れた高強度溶融亜鉛めっき鋼板とその製造方法
JP5213307B2 (ja) 表面性状に優れる高延性高強度合金化溶融亜鉛めっき鋼板の製造方法
JP2014029021A (ja) 高強度低降伏比冷延鋼板の製造方法

Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees