JP6808811B2 - 自動車用冷延鋼板及びその製造方法 - Google Patents
自動車用冷延鋼板及びその製造方法 Download PDFInfo
- Publication number
- JP6808811B2 JP6808811B2 JP2019503712A JP2019503712A JP6808811B2 JP 6808811 B2 JP6808811 B2 JP 6808811B2 JP 2019503712 A JP2019503712 A JP 2019503712A JP 2019503712 A JP2019503712 A JP 2019503712A JP 6808811 B2 JP6808811 B2 JP 6808811B2
- Authority
- JP
- Japan
- Prior art keywords
- annealing
- tensile strength
- elongation
- austenite
- cold
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 31
- 239000010960 cold rolled steel Substances 0.000 title claims description 11
- 238000000137 annealing Methods 0.000 claims description 91
- 229910001566 austenite Inorganic materials 0.000 claims description 63
- 238000005097 cold rolling Methods 0.000 claims description 38
- 229910000734 martensite Inorganic materials 0.000 claims description 37
- 229910000859 α-Fe Inorganic materials 0.000 claims description 15
- 238000005096 rolling process Methods 0.000 claims description 13
- 229910052748 manganese Inorganic materials 0.000 claims description 12
- 238000005496 tempering Methods 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- 229910052710 silicon Inorganic materials 0.000 claims description 9
- 238000005098 hot rolling Methods 0.000 claims description 8
- 229910052729 chemical element Inorganic materials 0.000 claims description 7
- 229910052804 chromium Inorganic materials 0.000 claims description 7
- 229910052750 molybdenum Inorganic materials 0.000 claims description 7
- 229910052719 titanium Inorganic materials 0.000 claims description 7
- 229910052720 vanadium Inorganic materials 0.000 claims description 7
- 238000003723 Smelting Methods 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 6
- 238000005266 casting Methods 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 4
- 238000005554 pickling Methods 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 description 102
- 239000010959 steel Substances 0.000 description 102
- 238000000034 method Methods 0.000 description 22
- 230000000052 comparative effect Effects 0.000 description 19
- 239000011572 manganese Substances 0.000 description 18
- 230000008569 process Effects 0.000 description 18
- 230000000694 effects Effects 0.000 description 16
- 230000009466 transformation Effects 0.000 description 12
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 239000010703 silicon Substances 0.000 description 7
- 239000011651 chromium Substances 0.000 description 6
- 238000001556 precipitation Methods 0.000 description 6
- 239000010936 titanium Substances 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 5
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 5
- 230000009471 action Effects 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 239000011733 molybdenum Substances 0.000 description 5
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 5
- 238000005728 strengthening Methods 0.000 description 5
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000010955 niobium Substances 0.000 description 4
- 230000002441 reversible effect Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 150000001247 metal acetylides Chemical class 0.000 description 3
- 229910052758 niobium Inorganic materials 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- 238000005275 alloying Methods 0.000 description 2
- 229910001563 bainite Inorganic materials 0.000 description 2
- 229910001567 cementite Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 238000001953 recrystallisation Methods 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 229910000797 Ultra-high-strength steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000009510 drug design Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000002436 steel type Substances 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Images
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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- 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
-
- 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
- C21D1/185—Hardening; Quenching with or without subsequent tempering from an intercritical temperature
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
-
- 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
- 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
- C21D8/0247—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
- C21D8/04—Modifying 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
- C21D8/0447—Modifying 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
- C21D8/0463—Modifying 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 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
- C21D8/04—Modifying 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
- C21D8/0447—Modifying 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
- C21D8/0473—Final recrystallisation annealing
-
- 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
- C21D9/48—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals deep-drawing sheets
-
- 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
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/54—Furnaces for treating strips or wire
- C21D9/663—Bell-type furnaces
-
- 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
- C22C38/02—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
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/14—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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
-
- 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
- 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
- C21D2211/005—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
- 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
- C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
-
- 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
Landscapes
- 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 Sheet Steel (AREA)
Description
本発明は一種の鋼種及びその製造方法と使用に関し、特に自動車用鋼及びその製造方法に関する。
自動車の「軽量化」により、超高強度鋼板は自動車構造部品によく応用されるようになる。現在で使用量が最も大きい鋼板は、例えば二相鋼、マルテンサイト鋼、変態誘起塑性鋼(TRIP鋼)、複相鋼等であり、それらの強伸度積は最大で約10GPa%程度である。例えば、超高強度マルテンサイト鋼の引張強度は1500MPaレベルである場合、その伸度は約5%程度であり、自動車分野における自動車の安全性能および製造過程中の成形性能に対する二重要求を満たせない。前世紀末、高強伸度積のオーステナイト鋼と双晶誘起塑性鋼(TWIP鋼)は相次いで開発され、それらの引張強度は800〜1000MPaで、伸度は60%も高く、強伸度積は60GPa%レベルにも達しており、2代目の自動車用鋼と言われる。2代目の自動車用鋼は、大量の合金元素が加えられており、コストが高いと共に、その製造性も劣ることから、その汎用化過程には絶大な制限がある。そのため、強伸度積が30GPa%超え、高強度と高伸度を兼ね備え、コストが低い3代目の自動車用鋼は広範に注目されている。
本発明の目的の一つは、1500MPaレベルに達することができ、且つその強伸度積が30GPa%以上である1500MPaレベル高強伸度積自動車用鋼を提供することにある。
C:0.1%〜0.3%、Si:0.1%〜2.0%、Mn:7.5%〜12%、Al:0.01%〜2.0%であり;残部は鉄および他の不可避不純物であり;
微細組織はオーステナイト+マルテンサイト+フェライト又はオーステナイト+マルテンサイトである、1500MPaレベル高強伸度積自動車用鋼を提供する。
(1)製錬・鋳造;
(2)熱間圧延;
(3)ベル型炉焼鈍:焼鈍温度を600〜700℃にし、焼鈍時間を1〜48hにする;
(4)冷間圧延;
(5)冷間圧延後の一回目の焼鈍:焼鈍温度をAc1とAc3温度の間にし、焼鈍時間を5min超えにする;
(6)冷間圧延後の二回目の焼鈍:焼鈍温度を750〜850℃にし、焼鈍時間を1〜10minにする;
(7)焼戻:焼戻温度を200〜300℃にし、焼戻時間を3min以上にする;
工程を順次に含む、本発明にかかる1500MPaレベル高強伸度積自動車用鋼の製造方法を提供することにある。
以下、図面の説明および具体的な実施例に基づいて、本発明にかかる1500MPaレベル高強伸度積自動車用鋼及びその製造方法をさらに解釈・説明するが、該解釈・説明は本発明の技術方案を不当に制限するものではない。
前記実施例1〜8の1500MPaレベル高強伸度積自動車用鋼および比較例1〜4の鋼板は、下記工程を用いて製造された:
(1)製錬・鋳造:転炉製錬を採用し、表1に示すように各化学元素の質量百分率を制御した。
(5)冷間圧延後の一回目の焼鈍:焼鈍温度をAc1とAc3温度の間にし、焼鈍時間を5min超えにした。
なお、工程(2)において、熱間圧延鋼板の厚さは8mm以下であった。工程(4)において、冷間圧延鋼板の厚さは2.5mm以下であった。
Claims (8)
- その化学元素が質量百分率で:
C:0.1%〜0.3%、Si:0.1%〜2.0%、Mn:7.5%〜12%、Al:0.01%〜2.0%であり;残部は鉄および他の不可避不純物であり;
微細組織はオーステナイト+マルテンサイト+フェライト又はオーステナイト+マルテンサイトであることを特徴とする、引張強度が1500MPa超で、引張強度と伸びA50との積が30GPa%超である自動車用冷延鋼板。 - その化学元素はさらに、Nb:0.01〜0.07%、Ti:0.02〜0.15%、V:0.05〜0.20%、Cr:0.15〜0.50%、Mo:0.10〜0.50%の中の少なくとも一つを含むことを特徴とする、請求項1に記載の引張強度が1500MPa超で、引張強度と伸びA50との積が30GPa%超である自動車用冷延鋼板。
- その微細組織はオーステナイト+マルテンサイト+フェライトである場合、オーステナイト相の割合は20%〜40%であり、マルテンサイト相の割合は50%〜70%であることを特徴とする、請求項1又は2に記載の引張強度が1500MPa超で、引張強度と伸びA50との積が30GPa%超である自動車用冷延鋼板。
- その微細組織はオーステナイト+マルテンサイトである場合、オーステナイト相の割合は20%〜50%であることを特徴とする、請求項1又は2に記載の引張強度が1500MPa超で、引張強度と伸びA50との積が30GPa%超である自動車用冷延鋼板。
- (1)製錬・鋳造;
(2)熱間圧延;
(3)ベル型炉焼鈍:焼鈍温度を600〜700℃にし、焼鈍時間を1〜48hにする;
(4)冷間圧延;
(5)冷間圧延後の一回目の焼鈍:焼鈍温度をAc1とAc3温度の間にし、焼鈍時間を5min超えにする;
(6)冷間圧延後の二回目の焼鈍:焼鈍温度を750〜850℃にし、焼鈍時間を1〜10minにする;
(7)焼戻:焼戻温度を200〜300℃にし、焼戻時間を3min以上にする;
工程を順次に含む、請求項1〜4のいずれかに記載の引張強度が1500MPa超で、引張強度と伸びA50との積が30GPa%超である自動車用冷延鋼板の製造方法。 - 前記工程(2)において、鋳造ビレットを1100〜1260℃に加熱してから、圧延を制御し、圧延開始温度を950〜1150℃にし、最終圧延温度を750〜900℃にし、巻取り温度を500〜850℃にし、巻取り後に室温に冷却し、全マルテンサイト組織を得ることを特徴とする、請求項5に記載の引張強度が1500MPa超で、引張強度と伸びA50との積が30GPa%超である自動車用冷延鋼板の製造方法。
- 前記工程(4)において、冷間圧延圧下量を40%以上にすることを特徴とする、請求項5に記載の引張強度が1500MPa超で、引張強度と伸びA50との積が30GPa%超である自動車用冷延鋼板の製造方法。
- 前記工程(3)と(4)の間には、さらに酸洗工程があることを特徴とする、請求項5に記載の引張強度が1500MPa超で、引張強度と伸びA50との積が30GPa%超である自動車用冷延鋼板の製造方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610601222.8A CN106244918B (zh) | 2016-07-27 | 2016-07-27 | 一种1500MPa级高强塑积汽车用钢及其制造方法 |
CN201610601222.8 | 2016-07-27 | ||
PCT/CN2017/094247 WO2018019220A1 (zh) | 2016-07-27 | 2017-07-25 | 一种1500MPa级高强塑积汽车用钢及其制造方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2019527771A JP2019527771A (ja) | 2019-10-03 |
JP6808811B2 true JP6808811B2 (ja) | 2021-01-06 |
Family
ID=57603308
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2019503712A Active JP6808811B2 (ja) | 2016-07-27 | 2017-07-25 | 自動車用冷延鋼板及びその製造方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US11047027B2 (ja) |
EP (1) | EP3492618B1 (ja) |
JP (1) | JP6808811B2 (ja) |
KR (1) | KR102251635B1 (ja) |
CN (1) | CN106244918B (ja) |
WO (1) | WO2018019220A1 (ja) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
RU2714975C1 (ru) * | 2016-08-23 | 2020-02-21 | Зальцгиттер Флахшталь Гмбх | Способ изготовления высокопрочной стальной полосы с улучшенными свойствами для дальнейшей обработки и стальная полоса такого типа |
KR101977491B1 (ko) | 2017-11-08 | 2019-05-10 | 주식회사 포스코 | 냉간 성형성이 우수한 초고강도 고연성 강판 및 그 제조방법 |
WO2019092482A1 (en) | 2017-11-10 | 2019-05-16 | Arcelormittal | Cold rolled heat treated steel sheet and a method of manufacturing thereof |
CN107974631B (zh) * | 2017-12-01 | 2019-07-30 | 安徽工业大学 | 一种多维度增强增塑生产高强塑积超高强度第三代汽车用钢的方法 |
US11473164B2 (en) * | 2018-03-19 | 2022-10-18 | Nippon Steel Corporation | High-strength cold-rolled steel sheet and manufacturing method therefor |
CN108624820B (zh) * | 2018-04-20 | 2021-06-29 | 北京科技大学 | 强塑积大于45 GPa·%的汽车用高强韧钢及制备方法 |
WO2020004661A1 (ja) * | 2018-06-29 | 2020-01-02 | 日本製鉄株式会社 | 高強度鋼板およびその製造方法 |
CN112714800B (zh) * | 2018-12-27 | 2022-10-04 | 日本制铁株式会社 | 钢板 |
JP7277711B2 (ja) * | 2019-02-14 | 2023-05-19 | 日本製鉄株式会社 | 耐摩耗厚鋼板 |
WO2022018502A1 (en) * | 2020-07-24 | 2022-01-27 | Arcelormittal | Cold rolled and annealed steel sheet |
WO2022018499A1 (en) * | 2020-07-24 | 2022-01-27 | Arcelormittal | Cold rolled and annealed steel sheet |
CN111996465B (zh) * | 2020-08-10 | 2021-11-05 | 北京科技大学 | 一种超高强汽车用轻质中锰钢热轧板及制备方法 |
CN112375990B (zh) * | 2020-10-30 | 2021-10-19 | 东北大学 | 一种屈服强度大于2000MPa的超高强度钢及其制备方法 |
US20240182998A1 (en) * | 2021-03-08 | 2024-06-06 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Method for manufacturing steel sheet |
CN114318161B (zh) * | 2021-12-15 | 2022-06-03 | 常州大学 | 一种低温高应变速率超塑性中锰钢及其制备方法 |
CN115710670A (zh) * | 2022-11-21 | 2023-02-24 | 华北理工大学 | 一种中锰钢制备工艺 |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0325530Y2 (ja) | 1986-01-13 | 1991-06-03 | ||
JPH05195156A (ja) * | 1991-11-15 | 1993-08-03 | Nippon Steel Corp | 溶接熱影響部靱性の優れた高マンガン超高張力鋼およびその製造方法 |
CN101928876B (zh) * | 2009-06-22 | 2013-07-31 | 鞍钢股份有限公司 | 加工性优良的trip/twip高强塑性汽车钢及其制备方法 |
CN101638749B (zh) * | 2009-08-12 | 2011-01-26 | 钢铁研究总院 | 一种低成本高强塑积汽车用钢及其制备方法 |
US20130167983A1 (en) * | 2010-09-09 | 2013-07-04 | Tata Steel Uk Limited | Super bainite steel and method for manufacturing it |
EP2524970A1 (de) | 2011-05-18 | 2012-11-21 | ThyssenKrupp Steel Europe AG | Hochfestes Stahlflachprodukt und Verfahren zu dessen Herstellung |
US9617614B2 (en) * | 2011-10-24 | 2017-04-11 | Jfe Steel Corporation | Method for manufacturing high strength steel sheet having excellent formability |
KR101382981B1 (ko) * | 2011-11-07 | 2014-04-09 | 주식회사 포스코 | 온간프레스 성형용 강판, 온간프레스 성형 부재 및 이들의 제조방법 |
CN102758133B (zh) * | 2012-07-26 | 2013-12-25 | 宝山钢铁股份有限公司 | 一种1000MPa级别的高强塑积汽车用钢及其制造方法 |
CN102912219A (zh) * | 2012-10-23 | 2013-02-06 | 鞍钢股份有限公司 | 一种高强塑积trip钢板及其制备方法 |
CN102925790B (zh) * | 2012-10-31 | 2014-03-26 | 钢铁研究总院 | 一种连续退火工艺生产高强塑积汽车用钢板的方法 |
CN103103438B (zh) * | 2013-03-07 | 2015-04-01 | 北京科技大学 | 一种高强度高塑性中锰冷轧钢板及其制造方法 |
FR3008427B1 (fr) * | 2013-07-11 | 2015-08-21 | Constellium France | Tole en alliage d'aluminium pour structure de caisse automobile |
KR101821913B1 (ko) * | 2014-01-06 | 2018-03-08 | 신닛테츠스미킨 카부시키카이샤 | 강재 및 그 제조 방법 |
KR101891019B1 (ko) * | 2014-05-29 | 2018-08-22 | 신닛테츠스미킨 카부시키카이샤 | 열처리 강재 및 그 제조 방법 |
KR101931041B1 (ko) * | 2014-10-24 | 2018-12-19 | 제이에프이 스틸 가부시키가이샤 | 고강도 핫 프레스 부재 및 그 제조 방법 |
CN104328360B (zh) * | 2014-11-20 | 2017-02-22 | 北京科技大学 | 双相孪生诱导塑性超高强度汽车钢板及其制备工艺 |
CN104651734B (zh) * | 2014-12-11 | 2017-03-29 | 武汉钢铁(集团)公司 | 1000MPa级高强度高塑性含铝中锰钢及其制造方法 |
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 |
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 |
JP6597374B2 (ja) * | 2016-02-18 | 2019-10-30 | 日本製鉄株式会社 | 高強度鋼板 |
EP3438316B1 (en) * | 2016-03-29 | 2022-03-09 | JFE Steel Corporation | Steel sheet for hot pressing and production method therefor, and hot press member and production method therefor |
KR101798771B1 (ko) * | 2016-06-21 | 2017-11-17 | 주식회사 포스코 | 항복강도가 우수한 초고강도 고연성 강판 및 그 제조방법 |
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 |
-
2016
- 2016-07-27 CN CN201610601222.8A patent/CN106244918B/zh active Active
-
2017
- 2017-07-25 US US16/320,235 patent/US11047027B2/en active Active
- 2017-07-25 KR KR1020197004638A patent/KR102251635B1/ko active IP Right Grant
- 2017-07-25 WO PCT/CN2017/094247 patent/WO2018019220A1/zh unknown
- 2017-07-25 EP EP17833523.8A patent/EP3492618B1/en active Active
- 2017-07-25 JP JP2019503712A patent/JP6808811B2/ja active Active
Also Published As
Publication number | Publication date |
---|---|
US20190271064A1 (en) | 2019-09-05 |
EP3492618B1 (en) | 2021-08-18 |
EP3492618A4 (en) | 2020-01-08 |
EP3492618A1 (en) | 2019-06-05 |
KR102251635B1 (ko) | 2021-05-14 |
CN106244918A (zh) | 2016-12-21 |
WO2018019220A1 (zh) | 2018-02-01 |
JP2019527771A (ja) | 2019-10-03 |
US11047027B2 (en) | 2021-06-29 |
KR20190029695A (ko) | 2019-03-20 |
CN106244918B (zh) | 2018-04-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6808811B2 (ja) | 自動車用冷延鋼板及びその製造方法 | |
JP6043801B2 (ja) | 温間プレス成形用鋼板、温間プレス成形部材、及びこれらの製造方法 | |
JP6766190B2 (ja) | 降伏強度に優れた超高強度高延性鋼板及びその製造方法 | |
CN110453146B (zh) | 一种无屈服平台的Cr合金化钢及其制备方法 | |
KR101758567B1 (ko) | 강도 및 성형성이 우수한 클래드 강판 및 그 제조방법 | |
EP3235913B1 (en) | High-strength and high-toughness steel plate with 800 mpa grade tensile strength and method for manufacturing the same | |
CN110484834B (zh) | 一种Cr、Mn合金化TRIP钢及其制备方法 | |
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 | |
JP6843244B2 (ja) | 曲げ加工性に優れた超高強度鋼板及びその製造方法 | |
CN104513930A (zh) | 弯曲和扩孔性能良好的超高强热轧复相钢板和钢带及其制造方法 | |
WO2009082091A1 (en) | Hot rolled steel sheet having superior hot press forming property and high tensile strength, formed article using the steel sheet and method for manufacturing the steel sheet and the formed article | |
KR20080038753A (ko) | 성형성이 우수한 고장력 강판 및 그 제조 방법 | |
EP3438315A1 (en) | High-strength cold rolled steel sheet with excellent yield strength and ductility, coated steel plate, and method for manufacturing same | |
CN104379791A (zh) | 一种含锰钢及其生产方法 | |
JP2019505668A (ja) | 高降伏比型高強度冷延鋼板及びその製造方法 | |
KR20110119285A (ko) | 고강도 냉연강판, 아연도금강판 및 이들의 제조방법 | |
JP2013227624A (ja) | 加工性に優れる高強度冷延鋼板の製造方法 | |
KR101778404B1 (ko) | 강도 및 성형성이 우수한 클래드 강판 및 그 제조방법 | |
KR20140083787A (ko) | 용접성 및 굽힘가공성이 우수한 고강도 열연강판 및 그 제조방법 | |
KR101439610B1 (ko) | 용접성이 우수한 저항복비 열연강판 및 그 제조방법 | |
JP2018529844A (ja) | めっき鋼板およびその製造方法 | |
JP5320621B2 (ja) | 熱間プレス加工性に優れた熱処理強化型鋼板およびその製造方法 | |
CN102828112B (zh) | 一种低成本高强度冷成型热连轧钢带及其制造方法 | |
JP2019536906A (ja) | 降伏比に優れた超高強度鋼板及びその製造方法 | |
KR101403262B1 (ko) | 초고강도 용융도금강판 및 그의 제조방법 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20190124 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20200124 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20200218 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20200513 |
|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20200616 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20201014 |
|
C60 | Trial request (containing other claim documents, opposition documents) |
Free format text: JAPANESE INTERMEDIATE CODE: C60 Effective date: 20201014 |
|
A911 | Transfer to examiner for re-examination before appeal (zenchi) |
Free format text: JAPANESE INTERMEDIATE CODE: A911 Effective date: 20201021 |
|
C21 | Notice of transfer of a case for reconsideration by examiners before appeal proceedings |
Free format text: JAPANESE INTERMEDIATE CODE: C21 Effective date: 20201027 |
|
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: 20201110 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20201209 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 6808811 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |