JP6992070B2 - 非常に良好な成形性を有する焼戻しされた被覆鋼板及びこの鋼板を製造する方法 - Google Patents
非常に良好な成形性を有する焼戻しされた被覆鋼板及びこの鋼板を製造する方法 Download PDFInfo
- Publication number
- JP6992070B2 JP6992070B2 JP2019533560A JP2019533560A JP6992070B2 JP 6992070 B2 JP6992070 B2 JP 6992070B2 JP 2019533560 A JP2019533560 A JP 2019533560A JP 2019533560 A JP2019533560 A JP 2019533560A JP 6992070 B2 JP6992070 B2 JP 6992070B2
- Authority
- JP
- Japan
- Prior art keywords
- steel sheet
- tempered
- hot
- sec
- temperature
- 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.)
- Active
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
- 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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
- B32B15/012—Layered 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 aluminium or an aluminium alloy
-
- 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
- C21D1/20—Isothermal quenching, e.g. bainitic hardening
-
- 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
- C21D1/22—Martempering
-
- 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
- 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
- C21D8/0236—Cold rolling
-
- 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
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
-
- 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
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
- C21D8/0263—Modifying 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
-
- 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
- C21D8/0278—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving a particular surface treatment
- C21D8/0284—Application of a separating or insulating coating
-
- 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
- C22C38/002—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
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
-
- 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
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
-
- 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
- C22C38/14—Ferrous alloys, e.g. steel alloys containing 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
- C22C38/16—Ferrous alloys, e.g. steel alloys containing 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
- C22C38/22—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
- C22C38/26—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
- C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
-
- 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
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel 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
- 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
- C23C2/26—After-treatment
- C23C2/28—Thermal after-treatment, e.g. treatment in oil bath
- C23C2/29—Cooling or quenching
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2605/00—Vehicles
- B32B2605/08—Cars
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C2204/00—End product comprising different layers, coatings or parts of cermet
Description
・950MPa以上、好ましくは1050MPa超又は1100MPa超の極限引張強さと、
・少なくとも700MPaの降伏強度と、
・12%以上の全伸びと、
・18%以上の穴広げ率と
を同時に有する鋼板を利用可能にすることによって、課題を解決することである。
・本発明による鋼組成物を用意するステップ、
・Ac3より高い温度に半製品を再加熱するステップ、
・熱間圧延仕上げ温度を750℃~1050℃にすべきオーステナイト域で前記半製品を圧延して、熱間圧延鋼板を得るステップ、
・20~150℃/秒の冷却速度で鋼板を600℃以下のコイル化温度に冷却し、及び前記熱間圧延板をコイル化するステップ、
・前記熱間圧延板を室温に冷却するステップ、
・任意選択的に、前記熱間圧延鋼板にスケール除去工程を実施するステップ、
・400℃~750の温度でアニーリングを熱間圧延鋼板に実施するステップ、
・任意選択的に、前記アニーリングされた熱間圧延鋼板にスケール除去工程を実施するステップ、
・30~80%の圧延率によって前記アニーリングされた熱間圧延鋼板を冷間圧延して、冷間圧延鋼板を得るステップ、
・次いで、1~20℃/秒の速度で前記冷間圧延鋼板をAe3超のソーキング温度に加熱し、600秒未満の間保持するステップ、
・次いで、5℃/秒超の速度で板をMsより高くて475℃より低い温度に冷却し、20~400秒の間保持するステップ、
・次いで、200℃/秒以下の冷却速度で鋼板を室温に冷却するステップ、
・次いで、1℃/秒~20℃/秒の速度でアニーリングされた鋼板を440℃~600℃のソーキング温度に再加熱し、100秒未満の間保持し、次いで、焼戻し及び被覆のための浴による亜鉛又は亜鉛合金被覆のときに鋼板を溶融めっきするステップ、
・1℃/秒~20℃/秒の冷却速度で焼戻しされた被覆鋼板を室温に冷却するステップ
を含む、本発明による方法を使用することが好ましい。
アニーリング処理を実施する前に、すべての本発明の鋼及び基準品を1000℃~1280℃の温度に再加熱し、次いで、850℃超の仕上げ圧延温度によって熱間圧延を施した後、580℃未満の温度でコイル化した。次いで、熱間圧延コイルを上述のように加工した後、厚さが30~80%薄くなるように冷間圧延した。次いで、これらの冷間圧延鋼板を、下記に示すアニーリングステップ及び焼戻しステップに供した:
すべての試料の最終的なミクロ組織は、通常の規格に従って実施される試験を用いて、走査型電子顕微鏡等の相異なる顕微鏡によって判定された。結果は、下記にまとめられている。
すべての本発明の鋼及び比較用の鋼に関する下記の機械的特性を判定した。
UTS:極限引張強さ
Tel:全伸び
HER:穴広げ率
Claims (12)
- 重量百分率として表される次の元素
0.17%≦炭素≦0.25%、
1.8%≦マンガン≦2.3%、
0.5%≦ケイ素≦2.0%、
0.03%≦アルミニウム≦1.2%、
硫黄≦0.03%、
リン≦0.03%
を含み、
次の任意選択的な元素
クロム≦0.4%、
モリブデン≦0.3%、
ニオブ≦0.04%、
チタン≦0.1%
の1種以上を含有してもよい、
組成を有する、焼戻しされた被覆鋼板であって、
残りの組成が、鉄及び処理によって生じた不可避的な不純物から構成され、前記鋼板のミクロ組織が、面積の割合により、4~20%の残留オーステナイト、0~15%のフェライト、40~85%の焼戻しベイナイト及び最低5%の焼戻しマルテンサイトからなり、焼戻しマルテンサイト及び残留オーステナイトの合計量が、10~30%であり、前記鋼板は、700MPa超の降伏強度、950MPa超の極限引張強さ、18%超の穴広げ率及び12%超の全伸びを有する、
焼戻しされた被覆鋼板。 - 前記組成が、0.6%~1.8%のケイ素を含む、請求項1に記載の焼戻しされた被覆鋼板。
- 前記組成が、0.03%~0.6%のアルミニウムを含む、請求項1又は2に記載の焼戻しされた被覆鋼板。
- 焼戻しマルテンサイト及び残留オーステナイトの合計量が、10%~25%である、請求項1~3のいずれか一項に記載の焼戻しされた被覆鋼板。
- 焼戻しマルテンサイト及び残留オーステナイトの合計量が、15%以上であり、焼戻しマルテンサイトの百分率が、10%より高い、請求項1~4のいずれか一項に記載の焼戻しされた被覆鋼板。
- 残留オーステナイトの炭素含量が、0.9~1.1質量%である、請求項1~5のいずれか一項に記載の焼戻しされた被覆鋼板。
- 1000MPa~1100MPaの極限引張強さ及び20%超の穴広げ率を有する、請求項6に記載の焼戻しされた被覆鋼板。
- 次の連続するステップ
請求項1~3のいずれか一項に記載の鋼組成物を用意するステップ、
Ac3より高い温度に半製品を再加熱するステップ、
オーステナイト域で前記半製品を圧延して、熱間圧延鋼板を得るステップであって、熱間圧延仕上げ温度は750℃~1050℃であるステップ、
20~150℃/秒の冷却速度で前記鋼板を600℃未満のコイル化温度に冷却し、及び前記熱間圧延鋼板をコイル化するステップ、
前記熱間圧延鋼板を室温に冷却するステップ、
400℃~750の温度でアニーリングを熱間圧延鋼板に実施するステップ、
30~80%の圧延率によって前記アニーリングされた熱間圧延鋼板を冷間圧延して、冷間圧延鋼板を得るステップ、
次いで、1~20℃/秒の速度で前記冷間圧延鋼板をAe3超のソーキング温度に加熱し、10秒超で600秒未満の間保持するステップ、
次いで、5℃/秒超の速度で前記鋼板をMsより高くて475℃より低い温度に冷却し、20~400秒の間当該温度に前記冷間圧延鋼板を保持するステップ、
次いで、200℃/秒以下の冷却速度で前記鋼板を室温に冷却するステップ、
次いで、1℃/秒~20℃/秒の速度で前記アニーリングされた鋼板を440℃~600℃のソーキング温度に再加熱し、100秒未満の間保持し、次いで、焼戻しが進行している間に亜鉛又は亜鉛合金の浴で前記鋼板を溶融めっきで被覆するステップ、
1℃/秒~20℃/秒の冷却速度で前記焼戻しされた被覆鋼板を室温に冷却するステップ
を含む、焼戻しされた被覆鋼板の製造の方法であって、
前記鋼板のミクロ組織が、面積の割合により、4~20%の残留オーステナイト、0~15%のフェライト、40~85%の焼戻しベイナイト及び最低5%の焼戻しマルテンサイトからなり、焼戻しマルテンサイト及び残留オーステナイトの合計量が、10~30%であり、
前記焼戻しされた被覆鋼板は、700MPa超の降伏強度、950MPa超の極限引張強さ、18%超の穴広げ率及び12%超の全伸びを有する、
方法。 - 前記熱間圧延鋼板を室温に冷却するステップの後に、前記熱間圧延鋼板にスケール除去工程が実施される、請求項8に記載の方法。
- 400℃~750の温度でアニーリングを熱間圧延鋼板に実施するステップの後に、前記アニーリングされた熱間圧延鋼板にスケール除去工程が実施される、請求項8又は9に記載の方法。
- コイル化温度が、400℃超である、請求項8~10のいずれか一項に記載の方法。
- 車両の構造部品又は安全部品の製造のための、請求項1~7のいずれか一項に記載の鋼板又は請求項8~11のいずれか一項に記載の方法によって製造された、鋼板の使用。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021120300A JP2021176993A (ja) | 2016-12-21 | 2021-07-21 | 非常に良好な成形性を有する焼戻しされた被覆鋼板及びこの鋼板を製造する方法 |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/IB2016/057907 WO2018115936A1 (en) | 2016-12-21 | 2016-12-21 | Tempered and coated steel sheet having excellent formability and a method of manufacturing the same |
IBPCT/IB2016/057907 | 2016-12-21 | ||
PCT/IB2017/057996 WO2018116099A1 (en) | 2016-12-21 | 2017-12-15 | Tempered and coated steel sheet having excellent formability and a method of manufacturing the same |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2021120300A Division JP2021176993A (ja) | 2016-12-21 | 2021-07-21 | 非常に良好な成形性を有する焼戻しされた被覆鋼板及びこの鋼板を製造する方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2020503443A JP2020503443A (ja) | 2020-01-30 |
JP6992070B2 true JP6992070B2 (ja) | 2022-01-13 |
Family
ID=57868289
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2019533560A Active JP6992070B2 (ja) | 2016-12-21 | 2017-12-15 | 非常に良好な成形性を有する焼戻しされた被覆鋼板及びこの鋼板を製造する方法 |
JP2021120300A Pending JP2021176993A (ja) | 2016-12-21 | 2021-07-21 | 非常に良好な成形性を有する焼戻しされた被覆鋼板及びこの鋼板を製造する方法 |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2021120300A Pending JP2021176993A (ja) | 2016-12-21 | 2021-07-21 | 非常に良好な成形性を有する焼戻しされた被覆鋼板及びこの鋼板を製造する方法 |
Country Status (14)
Country | Link |
---|---|
US (1) | US11655516B2 (ja) |
EP (1) | EP3559298B8 (ja) |
JP (2) | JP6992070B2 (ja) |
KR (1) | KR102325717B1 (ja) |
CN (1) | CN110088332B (ja) |
BR (1) | BR112019011142A2 (ja) |
CA (1) | CA3047690C (ja) |
FI (1) | FI3559298T3 (ja) |
MA (1) | MA63900B1 (ja) |
MX (1) | MX2019007169A (ja) |
RU (1) | RU2753173C2 (ja) |
UA (1) | UA124354C2 (ja) |
WO (2) | WO2018115936A1 (ja) |
ZA (1) | ZA201903329B (ja) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020058748A1 (en) * | 2018-09-20 | 2020-03-26 | Arcelormittal | Cold rolled and coated steel sheet and a method of manufacturing thereof |
KR102276740B1 (ko) * | 2018-12-18 | 2021-07-13 | 주식회사 포스코 | 연성 및 가공성이 우수한 고강도 강판 및 그 제조방법 |
WO2020245627A1 (en) * | 2019-06-03 | 2020-12-10 | Arcelormittal | Cold rolled and coated steel sheet and a method of manufacturing thereof |
EP3754037B1 (en) * | 2019-06-17 | 2022-03-02 | Tata Steel IJmuiden B.V. | Method of heat treating a high strength cold rolled steel strip |
ES2911656T3 (es) * | 2019-06-17 | 2022-05-20 | Tata Steel Ijmuiden Bv | Método de tratamiento térmico de un fleje de acero laminado en frío |
ES2911655T3 (es) * | 2019-06-17 | 2022-05-20 | Tata Steel Ijmuiden Bv | Tratamiento térmico de un fleje de acero laminado en frío |
ES2911661T3 (es) * | 2019-06-17 | 2022-05-20 | Tata Steel Ijmuiden Bv | Tratamiento térmico de un fleje de acero laminado en frío de alta resistencia |
JP2023506477A (ja) * | 2019-12-13 | 2023-02-16 | アルセロールミタル | 熱処理された冷間圧延鋼板及びその製造方法 |
WO2021123877A1 (en) * | 2019-12-17 | 2021-06-24 | Arcelormittal | Hot rolled steel sheet and method of manufacturing thereof |
CN111270160B (zh) * | 2020-03-25 | 2021-06-15 | 武汉钢铁有限公司 | 一种抗拉强度≥1200MPa的高延伸率热轧组织调控钢及生产方法 |
CN111334720B (zh) * | 2020-03-30 | 2022-03-25 | 邯郸钢铁集团有限责任公司 | 具有良好冷成型性能的高Al耐磨钢带及其生产方法 |
WO2022018501A1 (en) * | 2020-07-24 | 2022-01-27 | Arcelormittal | Cold rolled and annealed steel sheet and method of manufacturing the same |
WO2022136686A1 (en) * | 2020-12-23 | 2022-06-30 | Voestalpine Stahl Gmbh | A zinc or zinc-alloy coated strip or steel with improved zinc adhesion |
EP4339308A1 (en) * | 2021-06-15 | 2024-03-20 | JFE Steel Corporation | High-strength galvanized steel sheet and member, and method for manufacturing same |
WO2022264585A1 (ja) * | 2021-06-15 | 2022-12-22 | Jfeスチール株式会社 | 高強度亜鉛めっき鋼板および部材ならびにそれらの製造方法 |
DE102021119047A1 (de) * | 2021-07-22 | 2023-01-26 | Thyssenkrupp Steel Europe Ag | Verfahren zur Herstellung eines kaltgewalzten Stahlflachprodukts mit einem bainitischen Grundgefüge und kaltgewalztes Stahlflachprodukt mit einem bainitischen Grundgefüge |
CN115725900B (zh) * | 2022-11-14 | 2023-10-24 | 武汉科技大学 | 一种高强度高塑性贝氏体钢及生产方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015147991A (ja) | 2014-02-07 | 2015-08-20 | 新日鐵住金株式会社 | 冷延鋼板の製造方法 |
JP2016098427A (ja) | 2014-11-26 | 2016-05-30 | 株式会社神戸製鋼所 | 高強度高延性鋼板 |
JP2017526819A (ja) | 2014-08-07 | 2017-09-14 | アルセロールミタル | 強度、延性および成形性が改善された被覆鋼板の製造方法 |
JP2018021231A (ja) | 2016-08-03 | 2018-02-08 | 株式会社神戸製鋼所 | 高強度鋼板およびその製造方法 |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3440894B2 (ja) * | 1998-08-05 | 2003-08-25 | Jfeスチール株式会社 | 伸びフランジ性に優れる高強度熱延鋼板およびその製造方法 |
US7090731B2 (en) | 2001-01-31 | 2006-08-15 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | High strength steel sheet having excellent formability and method for production thereof |
JP4445365B2 (ja) * | 2004-10-06 | 2010-04-07 | 新日本製鐵株式会社 | 伸びと穴拡げ性に優れた高強度薄鋼板の製造方法 |
JP5223360B2 (ja) | 2007-03-22 | 2013-06-26 | Jfeスチール株式会社 | 成形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 |
EP1990431A1 (fr) * | 2007-05-11 | 2008-11-12 | ArcelorMittal France | Procédé de fabrication de tôles d'acier laminées à froid et recuites à très haute résistance, et tôles ainsi produites |
UA112771C2 (uk) * | 2011-05-10 | 2016-10-25 | Арселормітталь Інвестігасьон І Десароло Сл | Сталевий лист з високою механічною міцністю, пластичністю і формованістю, спосіб виготовлення та застосування таких листів |
WO2013018722A1 (ja) | 2011-07-29 | 2013-02-07 | 新日鐵住金株式会社 | 成形性に優れた高強度鋼板、高強度亜鉛めっき鋼板及びそれらの製造方法 |
PL2762590T3 (pl) | 2011-09-30 | 2019-05-31 | Nippon Steel & Sumitomo Metal Corp | Blacha stalowa ocynkowana i sposób jej wytwarzania |
JP5413539B2 (ja) | 2011-09-30 | 2014-02-12 | 新日鐵住金株式会社 | 焼付硬化性に優れた高強度溶融亜鉛めっき鋼板、高強度合金化溶融亜鉛めっき鋼板、並びにそれらの製造方法 |
TWI467028B (zh) | 2011-09-30 | 2015-01-01 | Nippon Steel & Sumitomo Metal Corp | High-strength hot-dip galvanized steel sheet with excellent impact resistance and its manufacturing method and high-strength alloyed hot-dip galvanized steel sheet and manufacturing method thereof |
EP2684975B1 (de) * | 2012-07-10 | 2016-11-09 | ThyssenKrupp Steel Europe AG | Kaltgewalztes Stahlflachprodukt und Verfahren zu seiner Herstellung |
WO2015011511A1 (fr) * | 2013-07-24 | 2015-01-29 | Arcelormittal Investigación Y Desarrollo Sl | Tôle d'acier à très hautes caractéristiques mécaniques de résistance et de ductilité, procédé de fabrication et utilisation de telles tôles |
KR101814949B1 (ko) | 2013-11-29 | 2018-01-04 | 신닛테츠스미킨 카부시키카이샤 | 열간 성형 강판 부재 및 그 제조 방법 |
JP5862651B2 (ja) * | 2013-12-18 | 2016-02-16 | Jfeスチール株式会社 | 耐衝撃性および曲げ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 |
JP6172298B2 (ja) * | 2014-01-29 | 2017-08-02 | Jfeスチール株式会社 | 高強度冷延鋼板およびその製造方法 |
JP6237364B2 (ja) | 2014-03-17 | 2017-11-29 | 新日鐵住金株式会社 | 衝突特性に優れた高強度鋼板及びその製造方法 |
WO2016001702A1 (en) * | 2014-07-03 | 2016-01-07 | Arcelormittal | Method for producing a high strength coated steel sheet having improved strength, ductility and formability |
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 |
JP6282576B2 (ja) | 2014-11-21 | 2018-02-21 | 株式会社神戸製鋼所 | 高強度高延性鋼板 |
CN107406938B (zh) | 2015-03-03 | 2019-07-26 | 杰富意钢铁株式会社 | 高强度钢板及其制造方法 |
DE102016012321A1 (de) * | 2016-10-17 | 2018-04-19 | Fiona Gabriella Saygivar | Absturzsicherung für Personen |
WO2018115935A1 (en) | 2016-12-21 | 2018-06-28 | Arcelormittal | Tempered and coated steel sheet having excellent formability and a method of manufacturing the same |
-
2016
- 2016-12-21 WO PCT/IB2016/057907 patent/WO2018115936A1/en active Application Filing
-
2017
- 2017-12-15 KR KR1020197017845A patent/KR102325717B1/ko active IP Right Grant
- 2017-12-15 WO PCT/IB2017/057996 patent/WO2018116099A1/en unknown
- 2017-12-15 US US16/467,643 patent/US11655516B2/en active Active
- 2017-12-15 EP EP17825618.6A patent/EP3559298B8/en active Active
- 2017-12-15 MX MX2019007169A patent/MX2019007169A/es unknown
- 2017-12-15 RU RU2019122654A patent/RU2753173C2/ru active
- 2017-12-15 UA UAA201908296A patent/UA124354C2/uk unknown
- 2017-12-15 MA MA63900A patent/MA63900B1/fr unknown
- 2017-12-15 CN CN201780078783.7A patent/CN110088332B/zh active Active
- 2017-12-15 JP JP2019533560A patent/JP6992070B2/ja active Active
- 2017-12-15 FI FIEP17825618.6T patent/FI3559298T3/fi active
- 2017-12-15 BR BR112019011142A patent/BR112019011142A2/pt not_active Application Discontinuation
- 2017-12-15 CA CA3047690A patent/CA3047690C/en active Active
-
2019
- 2019-05-27 ZA ZA2019/03329A patent/ZA201903329B/en unknown
-
2021
- 2021-07-21 JP JP2021120300A patent/JP2021176993A/ja active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015147991A (ja) | 2014-02-07 | 2015-08-20 | 新日鐵住金株式会社 | 冷延鋼板の製造方法 |
JP2017526819A (ja) | 2014-08-07 | 2017-09-14 | アルセロールミタル | 強度、延性および成形性が改善された被覆鋼板の製造方法 |
JP2016098427A (ja) | 2014-11-26 | 2016-05-30 | 株式会社神戸製鋼所 | 高強度高延性鋼板 |
JP2018021231A (ja) | 2016-08-03 | 2018-02-08 | 株式会社神戸製鋼所 | 高強度鋼板およびその製造方法 |
Also Published As
Publication number | Publication date |
---|---|
WO2018116099A1 (en) | 2018-06-28 |
CA3047690A1 (en) | 2018-06-28 |
CA3047690C (en) | 2023-02-14 |
RU2019122654A3 (ja) | 2021-01-22 |
RU2019122654A (ru) | 2021-01-22 |
EP3559298A1 (en) | 2019-10-30 |
US20190338388A1 (en) | 2019-11-07 |
WO2018115936A1 (en) | 2018-06-28 |
KR102325717B1 (ko) | 2021-11-15 |
US11655516B2 (en) | 2023-05-23 |
UA124354C2 (uk) | 2021-09-01 |
RU2753173C2 (ru) | 2021-08-12 |
ZA201903329B (en) | 2020-01-29 |
CN110088332A (zh) | 2019-08-02 |
MA63900B1 (fr) | 2024-02-29 |
MX2019007169A (es) | 2019-08-29 |
BR112019011142A2 (pt) | 2019-10-01 |
EP3559298B1 (en) | 2024-01-24 |
FI3559298T3 (fi) | 2024-03-18 |
KR20190089010A (ko) | 2019-07-29 |
EP3559298B8 (en) | 2024-04-10 |
JP2020503443A (ja) | 2020-01-30 |
JP2021176993A (ja) | 2021-11-11 |
CN110088332B (zh) | 2022-03-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6992070B2 (ja) | 非常に良好な成形性を有する焼戻しされた被覆鋼板及びこの鋼板を製造する方法 | |
JP7118972B2 (ja) | 非常に良好な成形性を有する焼戻しされた被覆鋼板及びこの鋼板を製造する方法 | |
CA3047696C (en) | High-strength cold rolled steel sheet having high formability and a method of manufacturing thereof | |
JP7275137B2 (ja) | 靭性、延性及び強度に優れた鋼板及びその製造方法 | |
EP3144406B1 (en) | High-strength cold rolled steel sheet having excellent ductility, hot-dip galvanized steel sheet and method for manufacturing the same | |
JP5283504B2 (ja) | 優れた延性を有する高強度鋼板を製造する方法およびこれにより製造された鋼板 | |
JP2018536764A (ja) | 成形性及び穴拡げ性に優れた超高強度鋼板及びその製造方法 | |
KR20150038426A (ko) | 열간 압연된 평강 제품 및 이의 제조 방법 | |
JP6383368B2 (ja) | 深絞りを適用するための冷間圧延された平鋼製品及びそれを製造するための方法 | |
JP6723377B2 (ja) | 降伏比に優れた超高強度高延性鋼板及びその製造方法 | |
JP2019533083A (ja) | 耐食性及びスポット溶接性に優れた熱間成形用冷延鋼板、熱間成形部材及びその製造方法 | |
CA3163376C (en) | Heat treated cold rolled steel sheet and a method of manufacturing thereof |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20190815 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20200423 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20200602 |
|
A601 | Written request for extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A601 Effective date: 20200827 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20201201 |
|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20210323 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20210721 |
|
C60 | Trial request (containing other claim documents, opposition documents) |
Free format text: JAPANESE INTERMEDIATE CODE: C60 Effective date: 20210721 |
|
A911 | Transfer to examiner for re-examination before appeal (zenchi) |
Free format text: JAPANESE INTERMEDIATE CODE: A911 Effective date: 20210907 |
|
C21 | Notice of transfer of a case for reconsideration by examiners before appeal proceedings |
Free format text: JAPANESE INTERMEDIATE CODE: C21 Effective date: 20210914 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20211109 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20211208 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 6992070 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |