CN114761583A - 经热处理的冷轧钢板及其制造方法 - Google Patents
经热处理的冷轧钢板及其制造方法 Download PDFInfo
- Publication number
- CN114761583A CN114761583A CN201980102822.1A CN201980102822A CN114761583A CN 114761583 A CN114761583 A CN 114761583A CN 201980102822 A CN201980102822 A CN 201980102822A CN 114761583 A CN114761583 A CN 114761583A
- Authority
- CN
- China
- Prior art keywords
- steel sheet
- percent
- rolled steel
- equal
- 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.)
- Granted
Links
- 239000010960 cold rolled steel Substances 0.000 title claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 94
- 239000010959 steel Substances 0.000 claims abstract description 94
- 229910000734 martensite Inorganic materials 0.000 claims abstract description 22
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 22
- 239000000203 mixture Substances 0.000 claims abstract description 19
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 14
- 229910001563 bainite Inorganic materials 0.000 claims abstract description 13
- 239000010955 niobium Substances 0.000 claims abstract description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 9
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000010703 silicon Substances 0.000 claims abstract description 9
- 239000010936 titanium Substances 0.000 claims abstract description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 8
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 8
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 7
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000011651 chromium Substances 0.000 claims abstract description 7
- 239000011574 phosphorus Substances 0.000 claims abstract description 7
- 239000011593 sulfur Substances 0.000 claims abstract description 7
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 7
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 7
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims abstract description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000011575 calcium Substances 0.000 claims abstract description 6
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims abstract description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 6
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 5
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 5
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 5
- 239000011733 molybdenum Substances 0.000 claims abstract description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052742 iron Inorganic materials 0.000 claims abstract description 4
- 239000011777 magnesium Substances 0.000 claims abstract description 4
- 238000012545 processing Methods 0.000 claims abstract description 4
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052684 Cerium Inorganic materials 0.000 claims abstract description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052796 boron Inorganic materials 0.000 claims abstract description 3
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 3
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 3
- 238000000137 annealing Methods 0.000 claims description 24
- 238000001816 cooling Methods 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 19
- 229910001566 austenite Inorganic materials 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 13
- 239000011572 manganese Substances 0.000 claims description 13
- 229910052748 manganese Inorganic materials 0.000 claims description 12
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 8
- 238000005098 hot rolling Methods 0.000 claims description 8
- 238000005496 tempering Methods 0.000 claims description 8
- 238000005096 rolling process Methods 0.000 claims description 7
- 239000011265 semifinished product Substances 0.000 claims description 5
- 230000001186 cumulative effect Effects 0.000 claims description 4
- 230000000717 retained effect Effects 0.000 claims description 4
- 238000003303 reheating Methods 0.000 claims description 3
- 238000005097 cold rolling Methods 0.000 claims description 2
- 238000002791 soaking Methods 0.000 claims 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 7
- 239000000047 product Substances 0.000 description 6
- 230000009466 transformation Effects 0.000 description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000001953 recrystallisation Methods 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 230000002411 adverse Effects 0.000 description 3
- 238000009749 continuous casting Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 150000001247 metal acetylides Chemical class 0.000 description 3
- 239000006104 solid solution Substances 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- -1 1.9% to 2.4% Chemical compound 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000001627 detrimental effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 229910001562 pearlite Inorganic materials 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000004881 precipitation hardening Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 150000004763 sulfides Chemical class 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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
-
- 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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, 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
-
- 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
- C21D8/0226—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
- 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
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
- C21D8/0273—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
- 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
-
- 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
- C21D8/0421—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 working steps
- C21D8/0426—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
- C21D8/0421—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 working steps
- C21D8/0436—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
- C21D8/04—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
-
- 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
- C22C38/18—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
- C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
-
- 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
- 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
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
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)
Abstract
经热处理且冷轧的钢板,所述钢板的组成包含以下元素:0.09%≤碳≤0.15%、1.8%≤锰≤2.5%、0.2%≤硅≤0.7%、0.01%≤铝≤0.1%、0%≤磷≤0.09%、0%≤硫≤0.09%、0%≤氮≤0.09%、0%≤铌≤0.1%、0%≤钛≤0.1%、0%≤铬≤1%、0%≤钼≤1%、0%≤钒≤0.1%、0%≤钙≤0.005%、0%≤硼≤0.01%、0%≤铈≤0.1%、0%≤镁≦0.05%、0%≤锆≦0.05%,剩余组成由铁和因加工引起的不可避免的杂质组成,所述钢板的显微组织以面积分数计包含65%至85%回火马氏体、0%至5%残余奥氏体、和15%至35%的累积存在的铁素体和贝氏体。
Description
本发明涉及具有高强度和高可成形性的冷轧钢板,所述冷轧钢板具有950MPa或更大的抗拉强度并具有大于56%的扩孔率,所述冷轧钢板适合于用作车辆用钢板。
汽车部件需要满足两个不一致的需求,即,易于成形且具有强度,但是近年来,考虑到全球环境问题,还给予汽车以改善燃料消耗的第三个要求。因此,现在汽车部件必须由具有高可成形性的材料制成,以便符合复杂汽车组件的易于装配的标准,并且同时必须针对车辆耐撞性和耐久性而提高强度,同时减轻车辆的重量以改善燃料效率。
因此,进行了大量的研究和开发努力以通过增加材料的强度来减少汽车中使用的材料的量。相反地,钢板强度的增加降低了可成形性,并且因此必须开发具有高强度和高可成形性二者的材料。
在高强度和高可成形性钢板的领域中的早期研究和开发已经产生了数种用于生产高强度和高可成形性钢板的方法,本文中列举了其中的一些方法以用于对本发明的明确理解:
JP2012111978是这样的专利申请:其具有以下组成:C:0.05%至0.3%、Si:0.01%至3.0%、Mn:0.5%至3%、Al:0.01%至0.1%,以及余量为Fe和附带杂质,并且具有由铁素体和回火马氏体作为高强度冷轧钢板的主要组分而组成的组分组成,但这样的钢不能达到大于50%的扩孔率。
EP2971209是涉及待在汽车工业中使用的具有改善的可成形性的高强度热浸镀锌复合相钢带的专利,所述钢带具有以下强制性元素组成:C:0.13%至0.19%、Mn:1.70%至2.50%、Si:0%至0.15%、Al:0.40%至1.00%、Cr:0.05%至0.25%、Nb:0.01%至0.05%、P:0%至0.10%、Ca:0%至0.004%、S:0%至0.05%、N:0%至0.007%,余量为铁和不可避免的杂质,其中0.40%<Al+Si<1.05%且Mn+Cr>1.90%,并且具有以体积百分比计包含以下的复合相显微组织:8%至12%残余奥氏体、20%至50%贝氏体、少于10%的马氏体,剩余部分为铁素体,但该授权专利无法达到超过900MPa的抗拉强度。
与高强度和高可成形性钢板的制造有关的已知的现有技术具有一个或另一个缺陷:因此需要具有高强度和高可成形性的冷轧钢板及其制造方法。
本发明的目的是通过使得可获得同时具有以下的冷轧钢板来解决这些问题:
-大于或等于950MPa,并且优选高于980MPa,或者甚至高于1000MPa的极限抗拉强度,
-大于或等于8%的总延伸率,
-56%或更大,并且优选57%或更大的扩孔率。
在一个优选的实施方案中,根据本发明的钢板可以具有大于或高于750MPa的屈服强度值。
优选地,这样的钢还可以具有对于成形,特别是对于具有良好的可焊性和可涂覆性的轧制的良好适应性。
本发明的另一目的还在于提供用于制造这些板的方法,该方法与常规的工业应用相容同时对于制造参数变化是稳健的。
本发明的其他特征和优点将根据本发明的以下详细描述而变得明显。
碳以0.09%至0.15%存在于钢中。碳是通过产生诸如马氏体的低温转变相来提高钢板的强度所必需的元素。小于0.09%的含量将不会确保足够量的马氏体,从而降低了强度和延性。另一方面,在碳含量超过0.15%时,焊接区和热影响区显著硬化,并因此损害了焊接区的机械特性。碳的优选限制为0.1%至0.14%,更优选为0.1%至0.13%。
本发明的钢的锰含量为1.8%至2.5%。锰是通过固溶强化来赋予强度的元素。发现至少约1.8重量%的量的锰用以提供钢板的强度和淬透性。因此,较高百分比的锰例如1.9%至2.4%是优选的,并且更优选的限制为2.0%至2.3%。但是当锰大于2.5%时,这产生诸如在退火之后的冷却期间减缓奥氏体向马氏体的转变的不利影响,导致强度的降低。此外,锰含量高于2.5%也会降低本发明钢的可焊性。
硅是用于本发明的钢的必需元素,硅以0.2%至0.7%存在。向本发明的钢中添加硅以通过固溶强化赋予强度。硅通过防止碳化物的析出以及通过促进马氏体的形成而在显微组织的形成方面发挥作用。但是每当硅含量大于0.7%时,使钢的表面特性和可焊性劣化,因此硅含量优选为0.3%至0.7%,并且更优选为0.4%至0.6%。
本发明的铝含量为0.01%至0.1%。添加铝以使本发明的钢脱氧。铝是α相生成(alphageneous)元素,并且还延缓碳化物的形成。这可以增加钢的可成形性和延性。为了获得这样的效果,铝含量需要为0.01%或更大。然而,当铝含量超过0.1%时,Ac3点升高超出可接受,奥氏体单相在工业上非常难以实现,因此无法进行完全奥氏体区域的热轧。因此,铝含量不得大于0.1%。铝存在的优选限制为0.01%至0.08%,并且更优选为0.01%至0.05%。
本发明的钢的磷含量被限制为0.09%。磷是在固溶体中硬化且还干扰碳化物的形成的元素。因此,至少0.002%的少量的磷可以是有利的,但是磷特别是由于其在晶界处偏析或者与锰共偏析的倾向而也具有其不利影响,例如点焊性和热延性的降低。由于这些原因,磷含量优选地限制为最大0.02%。
硫不是必需元素,但可以作为杂质包含在钢中。硫含量优选地尽可能低,但从制造成本的角度出发,为0.09%或更少,并且优选为至多0.01%。此外,如果钢中存在较高的硫,则硫尤其与Mn和Ti结合而形成硫化物并且降低了它们对本发明的有益影响。
为了避免材料老化,将氮限制为0.09%,氮通过沉淀强化与钒和铌形成赋予本发明的钢以强度的氮化物,但是每当存在大于0.09%的氮时,其可以形成大量的对本发明不利的铝氮化物,因此氮的优选上限为0.01%。
铌是可以以至多0.1%,优选地0.001%至0.1%添加到钢中的任选元素。铌适合于通过沉淀硬化来形成碳氮化物以赋予根据本发明的钢以强度。由于铌在加热期间延迟重结晶,因此在保持温度结束时以及因此在完全退火之后所形成的显微组织更精细,这导致产品硬化。但是,当铌含量高于0.1%时,碳氮化物的量对于本发明是不利的,因为大量的碳氮化物倾向于降低钢的延性。
钛是可以以至多0.1%,优选地0.001%至0.1%添加到本发明的钢中的任选元素。与铌一样,其参与在碳氮化物中,因此在硬化中起作用。但是钛也参与形成在铸造产品凝固期间出现的TiN。Ti的量因此被限制为0.1%,以避免对扩孔不利的粗TiN。在钛含量低于0.001%的情况下,钛不对本发明的钢产生任何影响。
本发明的钢的铬含量为0%至1%。铬是为钢提供强度和硬化的任选元素,但在使用时高于1%损害钢的表面光洁度。
钼是构成本发明的钢的0%至1%的任选元素;钼增加了本发明的钢的淬透性,并且在退火之后的冷却期间影响奥氏体向铁素体和贝氏体的转变。然而,过量添加钼增加了合金元素的添加成本,使得出于经济原因将其含量限制为1%。
钒是可以以至多0.1%,优选地0.001%至0.01%添加到本发明的钢中的任选元素。与铌一样,其参与在碳氮化物中,因此在硬化中起作用。但是钒也参与形成在铸造产品凝固期间出现的VN。V的量因此被限制为0.1%,以避免对扩孔不利的粗VN。在钒含量低于0.001%的情况下,钒不对本发明的钢产生任何影响。
钙是可以以至多0.005%,优选地0.001%至0.005%添加到本发明的钢中的任选元素。钙作为任选元素尤其是在夹杂物处理期间添加到本发明的钢中。钙通过在对钢进行球化处理中捕获有害的硫含量而有助于钢的精炼。
诸如铈、硼、镁或锆的其他元素可以以以下比例单独添加或组合添加:Ce≤0.1%、B≤0.01%、Mg≤0.05%和Zr≤0.05%。直至所示的最大含量水平,这些元素使得可以在凝固期间细化晶粒。本发明不旨在添加铜和镍,但这些元素可以作为残余物分别或累积地以至多0.1%存在。
钢的组成的剩余部分由铁和因加工产生的不可避免的杂质组成。
根据本发明的钢板的显微组织以面积分数计包含65%至85%的回火马氏体、0%至5%的残余奥氏体和15%至35%的累积量的贝氏体和铁素体。回火马氏体构成本发明的钢的基体相。
回火马氏体以面积分数计构成显微组织的65%至85%。回火马氏体由在退火之后的第二步冷却期间以及特别是在低于Ms温度并且更特别地在Ms-50℃与20℃之间形成的马氏体形成。然后将这样的马氏体在150℃至400℃的回火温度Temper下保持期间回火。本发明的马氏体赋予这样的钢以延性和强度。优选地,马氏体的含量为65%至80%,并且更优选为68%至78%。
贝氏体和铁素体以15%至35%累积存在于钢中。在一个优选的实施方案中,铁素体和贝氏体的累积量的范围为20%至35%,并且更优选为22%至32%。
铁素体成分改善本发明的钢的特性,特别是关于延伸率和扩孔率,因为铁素体是软的且本质上延性的成分。这种铁素体主要是在退火之后的第一步冷却期间形成的。在一个优选的实施方案中,铁素体可以至少以15%的量存在。
贝氏体可以赋予钢以强度,但当以大量存在时,其可能不利地影响钢的扩孔率和延伸率。贝氏体在回火之前的再加热期间形成。在一个优选的实施方案中,贝氏体含量保持在0%至10%,更优选低于8%,并且甚至更优选低于5%。
残余奥氏体是任选的相,其可以以0%至5%存在于钢中,但优选不存在。
在一个优选的实施方案中,根据本发明的钢板可以通过任何适当的方法获得。然而,优选的是使用根据本发明的优选实施方案的方法,该方法包括以下顺序步骤:
这样的方法包括提供具有根据本发明的化学组成的钢的半成品。半成品可以铸造成锭或者连铸成薄板坯或薄带的形式,即,厚度例如从对于板坯的约220mm到对于薄带的数十毫米变化。
为了简化本发明的目的,板坯将被视为半成品。具有上述化学组成的板坯通过连铸而制造,其中板坯优选地在铸造期间经历直接的轻微压下,以确保消除中心偏析和孔隙率降低。通过连铸工艺提供的板坯可以在连铸之后直接在高温下使用,或者可以首先冷却至室温然后再加热以进行热轧。
经受热轧的板坯的温度为至少1000℃,优选高于1100℃,并且必须低于1250℃,在板坯的温度低于1000℃的情况下,对轧机施加过大的负荷,此外,钢的温度在精轧期间可能降低至铁素体转变温度,从而钢将在组织中包含转变铁素体的状态下被轧制。此外,温度不得高于1250℃,因为将存在导致粗的铁素体晶粒的粗糙铁素体晶粒的形成的风险,这降低了这些晶粒在热轧期间重结晶的能力。初始铁素体晶粒尺寸越大,重结晶越不容易,这意味着必须避免再加热温度高于1250℃,因为这在工业上是昂贵的并且在铁素体的重结晶方面是不利的。
板坯的温度优选足够高,使得热轧可以完全在奥氏体范围内完成,热轧终轧温度保持高于Ac3,并且优选高于Ac3+50℃。终轧必须在高于Ac3下进行,因为低于该温度,钢板表现出可轧制性的显著下降。终轧温度优选高于Ac3+50℃以具有有利于重结晶和轧制的组织。
然后使以这种方式获得的板以至少30℃/秒的冷却速率冷却至低于600℃的卷取温度。优选地,冷却速率将小于或等于65℃/秒且高于35℃/秒。卷取温度优选为至少350℃,以避免奥氏体转变为铁素体和珠光体以及有助于形成均匀的贝氏体和马氏体显微组织。
经卷取的热轧钢板可以在使其经受任选的热带退火之前被冷却至室温或者可以被直接送至任选的热带退火。
如果需要,热轧钢板可以经受任选的酸洗以去除热轧期间形成的氧化皮。然后优选地使热轧板在400℃至750℃的温度下经受任选的热带退火1小时至96小时。
此后,如有必要,可以进行该热轧钢板的酸洗以去除氧化皮。
然后以35%至90%的厚度压下率对热轧钢板进行冷轧。然后使冷轧钢板经受退火,以赋予本发明的钢以目标显微组织和机械特性。
为了使冷轧钢板退火,以两步加热过程将冷轧钢板加热,在步骤一中,将冷轧板以至少10℃/秒的加热速率HR1加热至600℃至650℃的温度HT1。然后,在步骤二中,将冷轧板以至少1℃/秒,并且优选至少2.0℃/秒的加热速率HR2从HT1加热至Ac3至Ac3+200℃的退火温度,HR1总是高于HR2。
优选的HR1为至少15℃/秒,并且优选的HT1温度范围为600℃至630℃。退火温度的优选范围为Ac3+10℃至Ac3+150℃,并且更优选为Ac3+20℃至Ac3+100℃。
然后将冷轧钢板在退火温度下保持至少5秒且不超过1000秒。温度和时间被选择为确保100%再结晶,即在退火结束时获得100%奥氏体的百分比。
然后以三步冷却过程使所述板冷却。在步骤一中,使冷轧板以10℃/秒或更小的冷却速率CR1从退火温度冷却至675℃至725℃的温度CT1。然后,在步骤二中,使冷轧板以至少30℃/秒的冷却速率CR2从CT1冷却至450℃至550℃的CT2。然后,在步骤三中,使冷轧板以至少200℃/秒的冷却速率CR3从CT2冷却至Ms-50℃至20℃的CT3。
在一个优选的实施方案中,冷却速率CR1为5℃/秒或更小,以及CT1优选为685℃至720℃,并且更优选为685℃至700℃。CR2的优选范围为至少40℃/秒,以及CT2的优选范围为450℃至525℃,并且更优选为460℃至510℃。CR3的优选范围为至少300℃/秒,并且更优选为至少400℃/秒。CT3的优选限制为Ms-80℃至20℃,并且更优选为Ms-100℃至20℃。
然后将冷轧钢板以至少10℃/秒或更好至少20℃/秒的加热速率至300℃至380℃的回火温度并在回火温度下保持至少100秒但不超过1000秒,以获得赋予本发明的钢以良好机械特性的回火马氏体。优选的回火温度范围为320℃至360℃,并且更优选为330℃至350℃。
然后将冷轧钢板冷却至室温,优选以200℃/秒或更小的冷却速率。
可以在该阶段进行压下率低于1%的任选的光整冷轧操作或任选的拉伸矫直操作。
经热处理的冷轧板然后可以任选地通过电沉积或真空涂覆或任何其他合适的工艺进行涂覆。
可以任选地在退火之后对未经涂覆的产品或者在涂覆之后对经涂覆的产品进行任选的后分批退火,优选地在170℃至210℃下进行12小时至30小时,以减小相之间的硬度梯度并确保经涂覆产品的脱气。
实施例
本文中提供的以下试验和实施例本质上是非限制性的并且必须仅出于说明的目的而被考虑,并且将显示本发明的有利特征并阐述本发明人在大量实验之后选择的参数的重要性,并进一步确定了可以由根据本发明的钢实现的特性。
用表1中汇总的组成制备根据本发明的钢板样品和根据一些比较等级的钢板样品,并且将工艺参数汇总在表2中。这些钢板的相应的显微组织汇总在表3中并且特性汇总在表4中。
表1描绘了具有以重量百分比表示的组成的钢。
表1:试验的组成
样品 | C | Mn | Si | Al | P | S | N | Nb | Ti | Cr | Mo | B |
A | 0.116 | 2.150 | 0.482 | 0.031 | 0.020 | 0.011 | 0.002 | 0.011 | 0.017 | 0.036 | 0.002 | 0.003 |
B | 0.117 | 2.120 | 0.495 | 0.033 | 0.02 | 0.022 | 0.002 | 0.011 | 0.015 | 0.040 | 0.002 | 0.004 |
C | 0.114 | 2.180 | 0.458 | 0.032 | 0.017 | 0.019 | 0.002 | 0.018 | 0.025 | 0.033 | 0.002 | 0.003 |
表2汇总了在表1的钢上实施的退火工艺参数。
表2还示出了钢样品的Ac3和马氏体转变Ms温度。Ac3和Ms的计算是通过使用以下公式完成的:
Ms(Barbier)=545-601.2*(1-EXP(-0.868[C]))-34.4[Mn]-13.7[Si]-9.2[Cr]
-17.3[Ni]-15.4[Mo]+10.8[V]+4.7[Co]-1.4[Al]-16.3[Cu]-361[Nb]
-2.44[Ti]-3448[B]
此外,将样品加热至1000℃至1250℃的温度,然后用终轧温度890℃使其经受热轧,并且此后在低于600℃的温度下卷取。然后如所声称的对热轧带卷进行加工并以35%至90%的厚度压下率进行冷轧。
表2:试验的工艺参数
表2a
加下划线的值:不是根据本发明。
表2b
表3汇总了根据标准在不同显微镜例如扫描电子显微镜上进行的测试以确定本发明的钢试验和参考试验二者的显微组织组成的结果。
表3:试验的显微组织
钢样品 | 回火马氏体 | 铁素体+贝氏体 | 残余奥氏体 |
I1 | 74.9 | 25.1 | 0 |
I2 | 72.4 | 27.6 | 0 |
R1 | <u>88.4</u> | <u>11.6</u> | 0 |
R2 | <u>63.3</u> | <u>36.7</u> | 0 |
R3 | <u>56.8</u> | <u>43.2</u> | 0 |
R4 | <u>63.4</u> | <u>36.6</u> | 0 |
加下划线的值:不是根据本发明。
表4汇总了本发明的钢和参考钢二者的机械特性。抗拉强度、屈服强度和总延伸率测试根据ISO 6892标准进行,而为了评估扩孔,根据标准ISO16630:2009应用称为扩孔的测试。在该测试中,使样品经受冲孔以形成10mm(=Di)的孔并变形。在变形之后,测量孔直径Df,并使用下面的公式计算扩孔率(HER):
HER%=100*(Df-Di)/Di
表4:试验的机械特性
加下划线的值:不是根据本发明。
实施例表明,根据本发明的钢板由于其特定的组成和显微组织是仅有的显示出所有目标特性的钢板。
Claims (19)
1.一种经热处理且冷轧的钢板,以重量百分比表示,所述钢板的组成包含以下元素:
0.09%≤碳≤0.15%
1.8%≤锰≤2.5%
0.2%≤硅≤0.7%
0.01%≤铝≤0.1%
0%≤磷≤0.09%
0%≤硫≤0.09%
0%≤氮≤0.09%
并且能够包含以下任选元素中的一者或更多者:
0%≤铌≤0.1%
0%≤钛≤0.1%
0%≤铬≤1%
0%≤钼≤1%
0%≤钒≤0.1%
0%≤钙≤0.005%
0%≤硼≤0.01%
0%≤铈≤0.1%
0%≤镁≦0.05%
0%≤锆≦0.05%
剩余组成由铁和因加工引起的不可避免的杂质组成,所述钢板的显微组织以面积分数计包含65%至85%回火马氏体、0%至5%残余奥氏体、和15%至35%的累积存在的铁素体和贝氏体。
2.根据权利要求1所述的经热处理且冷轧的钢板,其中所述组成包含0.3%至0.7%的硅。
3.根据权利要求1或2中任一项所述的经热处理且冷轧的钢板,其中所述组成包含0.01%至0.08%的铝。
4.根据权利要求1至3中任一项所述的经热处理且冷轧的钢板,其中所述组成包含1.9%至2.4%的锰。
5.根据权利要求1至4中任一项所述的经热处理且冷轧的钢板,其中所述组成包含0.1%至0.13%的碳。
6.根据权利要求1至5中任一项所述的经热处理且冷轧的钢板,其中,硅和铝的累积量为0.3%至0.8%。
7.根据权利要求1至6中任一项所述的经热处理且冷轧的钢板,其中,铁素体和贝氏体的累积量为22%至35%,其中铁素体的百分比为钢的总面积分数的至少15%。
8.根据权利要求1至7中任一项所述的经热处理且冷轧的钢板,其中残余奥氏体的碳含量为0.7%至0.9%。
9.根据权利要求1至8中任一项所述的经热处理且冷轧的钢板,其中所述回火马氏体为65%至80%。
10.根据权利要求1至9中任一项所述的经热处理且冷轧的钢板,其中贝氏体为0%至10%。
11.根据权利要求1至10中任一项所述的经热处理且冷轧的钢板,其中所述钢板具有950MPa或更大的极限抗拉强度和8%或更大的总延伸率。
12.根据权利要求11所述的冷轧且涂覆的钢板,其中所述钢板具有1000MPa或更大的极限抗拉强度和至少55%的较大的扩孔率。
13.一种生产经热处理且冷轧的钢板的方法,包括以下顺序步骤:
-提供根据权利要求1至6中任一项所述的钢组成;
-将所述半成品再加热至1000℃至1250℃的温度;
-在Ac3至Ac3+100℃的温度范围内对所述半成品进行轧制以获得热轧钢,其中热轧终轧温度应高于Ac3;
-使所述热轧钢以至少30℃/秒的冷却速率冷却至低于600℃的卷取温度;以及将所述热轧钢卷取;
-将所述热轧钢冷却至室温;
-任选地对所述热轧钢板进行氧化皮去除过程;
-任选地在400℃至750℃之间对热轧钢板进行退火;
-任选地对所述热轧钢板进行氧化皮去除过程;
-以35%至90%的压下率对所述热轧钢板进行冷轧以获得冷轧钢板;
-以两步加热使所述冷轧钢板退火,其中:
ο第一步从以至少10℃/秒的加热速率HR1将所述钢板加热至600℃至650℃的温度HT1开始,
ο第二步从以1℃/秒或更大的加热速率HR2将所述钢板从HT1进一步加热至Ac3至Ac3+200℃的退火温度范围开始,HR2低于HR1,
-然后在退火温度下进行退火5秒至1000秒,
-然后以三步冷却使所述冷轧钢板冷却,其中:
ο第一步从以10℃/秒或更小的冷却速率CR1将所述钢板从所述退火温度冷却至675℃至725℃的温度CT1开始,
ο第二步从以30℃/秒或更大的冷却速率CR2将所述钢板从CT1进一步冷却至450℃至550℃的CT2开始,
ο第三步从以200℃或更大的冷却速率CR2将所述钢板从CT2进一步冷却至Ms-50℃至20℃的CT3开始,
-然后将所述冷轧钢板以至少10℃/秒的加热速率加热至300℃至380℃的回火温度,并回火100秒至1000秒,
-然后冷却至室温范围以获得经热处理且冷轧的钢板。
14.根据权利要求13所述的方法,其中所述卷取温度为350℃至600℃。
15.根据权利要求13或14所述的方法,其中在HR1加热速率为至少15℃/秒的情况下,所述HT1温度为600℃至630℃。
16.根据权利要求13至15中任一项所述的方法,其中退火均热温度为Ac3+10℃至Ac3+150℃。
17.根据权利要求13至16中任一项所述的方法,其中所述回火温度的范围为320℃至360℃。
18.根据权利要求1至12中任一项所述的钢板或根据权利要求13至17所述的方法生产的钢板用于制造车辆的结构部件或安全部件的用途。
19.一种车辆,包括根据权利要求18获得的部件。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/IB2019/060741 WO2021116740A1 (en) | 2019-12-13 | 2019-12-13 | Heat treated cold rolled steel sheet and a method of manufacturing thereof |
Publications (2)
Publication Number | Publication Date |
---|---|
CN114761583A true CN114761583A (zh) | 2022-07-15 |
CN114761583B CN114761583B (zh) | 2024-04-05 |
Family
ID=69137940
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201980102822.1A Active CN114761583B (zh) | 2019-12-13 | 2019-12-13 | 经热处理的冷轧钢板及其制造方法 |
CN202080084937.5A Pending CN114761584A (zh) | 2019-12-13 | 2020-12-10 | 经热处理的冷轧钢板及其制造方法 |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202080084937.5A Pending CN114761584A (zh) | 2019-12-13 | 2020-12-10 | 经热处理的冷轧钢板及其制造方法 |
Country Status (10)
Country | Link |
---|---|
US (2) | US20230031338A1 (zh) |
EP (2) | EP4073279A1 (zh) |
JP (2) | JP2023506477A (zh) |
KR (2) | KR20220095239A (zh) |
CN (2) | CN114761583B (zh) |
BR (1) | BR112022010401A2 (zh) |
CA (2) | CA3163376C (zh) |
MX (2) | MX2022007053A (zh) |
WO (2) | WO2021116740A1 (zh) |
ZA (2) | ZA202205608B (zh) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107109571A (zh) * | 2015-01-15 | 2017-08-29 | 杰富意钢铁株式会社 | 高强度热镀锌钢板及其制造方法 |
CN108463570A (zh) * | 2015-12-15 | 2018-08-28 | Posco公司 | 化学转化处理性及扩孔性优异的超高强度钢板及其制造方法 |
CN108495943A (zh) * | 2016-03-25 | 2018-09-04 | 新日铁住金株式会社 | 高强度钢板及高强度镀锌钢板 |
CN109154049A (zh) * | 2016-05-24 | 2019-01-04 | 安赛乐米塔尔公司 | 经冷轧和退火的钢板、其制造方法以及这样的钢用以制造车辆部件的用途 |
CN109563592A (zh) * | 2016-08-30 | 2019-04-02 | 杰富意钢铁株式会社 | 薄钢板及其制造方法 |
CN109642280A (zh) * | 2016-08-10 | 2019-04-16 | 杰富意钢铁株式会社 | 高强度钢板及其制造方法 |
US20190338385A1 (en) * | 2016-12-21 | 2019-11-07 | Arcelormittal | High-strength cold rolled steel sheet having high formability and a method of manufacturing thereof |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101460647B (zh) * | 2006-07-14 | 2015-05-20 | 株式会社神户制钢所 | 高强度钢板及其制造方法 |
JP5374479B2 (ja) | 2010-11-19 | 2013-12-25 | 株式会社神戸製鋼所 | 強度ばらつきの小さい高強度冷延鋼板の製造方法 |
KR20150132208A (ko) | 2013-03-11 | 2015-11-25 | 타타 스틸 이즈무이덴 베.뷔. | 고강도 용융 침지 아연도금 복합상 강 스트립 |
JP2015200012A (ja) * | 2014-03-31 | 2015-11-12 | 株式会社神戸製鋼所 | 延性、伸びフランジ性、および溶接性に優れた高強度冷延鋼板、高強度溶融亜鉛めっき鋼板、および高強度合金化溶融亜鉛めっき鋼板 |
WO2018115936A1 (en) * | 2016-12-21 | 2018-06-28 | Arcelormittal | Tempered and coated steel sheet having excellent formability and a method of manufacturing the same |
WO2018115935A1 (en) * | 2016-12-21 | 2018-06-28 | Arcelormittal | Tempered and coated steel sheet having excellent formability and a method of manufacturing the same |
WO2019092481A1 (en) * | 2017-11-10 | 2019-05-16 | Arcelormittal | Cold rolled steel sheet and a method of manufacturing thereof |
WO2019092482A1 (en) * | 2017-11-10 | 2019-05-16 | Arcelormittal | Cold rolled heat treated steel sheet and a method of manufacturing thereof |
WO2019122965A1 (en) * | 2017-12-19 | 2019-06-27 | Arcelormittal | Cold rolled and coated steel sheet and a method of manufacturing thereof |
-
2019
- 2019-12-13 CA CA3163376A patent/CA3163376C/en active Active
- 2019-12-13 EP EP19832441.0A patent/EP4073279A1/en not_active Withdrawn
- 2019-12-13 MX MX2022007053A patent/MX2022007053A/es unknown
- 2019-12-13 CN CN201980102822.1A patent/CN114761583B/zh active Active
- 2019-12-13 WO PCT/IB2019/060741 patent/WO2021116740A1/en unknown
- 2019-12-13 BR BR112022010401A patent/BR112022010401A2/pt unknown
- 2019-12-13 JP JP2022535558A patent/JP2023506477A/ja active Pending
- 2019-12-13 US US17/783,442 patent/US20230031338A1/en active Pending
- 2019-12-13 KR KR1020227019564A patent/KR20220095239A/ko unknown
-
2020
- 2020-12-10 EP EP20823957.4A patent/EP4073280A1/en active Pending
- 2020-12-10 JP JP2022535560A patent/JP2023505693A/ja active Pending
- 2020-12-10 MX MX2022007054A patent/MX2022007054A/es unknown
- 2020-12-10 WO PCT/IB2020/061765 patent/WO2021116976A1/en unknown
- 2020-12-10 KR KR1020227019565A patent/KR20220095240A/ko unknown
- 2020-12-10 CN CN202080084937.5A patent/CN114761584A/zh active Pending
- 2020-12-10 US US17/783,409 patent/US20230036084A1/en active Pending
- 2020-12-10 CA CA3163313A patent/CA3163313C/en active Active
-
2022
- 2022-05-20 ZA ZA2022/05608A patent/ZA202205608B/en unknown
- 2022-05-23 ZA ZA2022/05649A patent/ZA202205649B/en unknown
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107109571A (zh) * | 2015-01-15 | 2017-08-29 | 杰富意钢铁株式会社 | 高强度热镀锌钢板及其制造方法 |
CN108463570A (zh) * | 2015-12-15 | 2018-08-28 | Posco公司 | 化学转化处理性及扩孔性优异的超高强度钢板及其制造方法 |
CN108495943A (zh) * | 2016-03-25 | 2018-09-04 | 新日铁住金株式会社 | 高强度钢板及高强度镀锌钢板 |
CN109154049A (zh) * | 2016-05-24 | 2019-01-04 | 安赛乐米塔尔公司 | 经冷轧和退火的钢板、其制造方法以及这样的钢用以制造车辆部件的用途 |
CN109642280A (zh) * | 2016-08-10 | 2019-04-16 | 杰富意钢铁株式会社 | 高强度钢板及其制造方法 |
CN109563592A (zh) * | 2016-08-30 | 2019-04-02 | 杰富意钢铁株式会社 | 薄钢板及其制造方法 |
US20190338385A1 (en) * | 2016-12-21 | 2019-11-07 | Arcelormittal | High-strength cold rolled steel sheet having high formability and a method of manufacturing thereof |
Also Published As
Publication number | Publication date |
---|---|
CA3163376C (en) | 2024-02-27 |
ZA202205608B (en) | 2023-01-25 |
JP2023506477A (ja) | 2023-02-16 |
US20230036084A1 (en) | 2023-02-02 |
JP2023505693A (ja) | 2023-02-10 |
CA3163313C (en) | 2024-04-23 |
KR20220095239A (ko) | 2022-07-06 |
CA3163313A1 (en) | 2021-06-17 |
MX2022007054A (es) | 2022-07-11 |
WO2021116976A1 (en) | 2021-06-17 |
CN114761583B (zh) | 2024-04-05 |
CA3163376A1 (en) | 2021-06-17 |
EP4073279A1 (en) | 2022-10-19 |
CN114761584A (zh) | 2022-07-15 |
BR112022010401A2 (pt) | 2022-08-23 |
WO2021116740A1 (en) | 2021-06-17 |
EP4073280A1 (en) | 2022-10-19 |
MX2022007053A (es) | 2022-07-11 |
US20230031338A1 (en) | 2023-02-02 |
KR20220095240A (ko) | 2022-07-06 |
ZA202205649B (en) | 2023-01-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN110088342B (zh) | 具有高成形性的高强度冷轧钢板及其制造方法 | |
CN113748219B (zh) | 经冷轧的马氏体钢及其马氏体钢的方法 | |
CN113811624B (zh) | 经冷轧的马氏体钢及其马氏体钢的方法 | |
CN113840930A (zh) | 经冷轧和涂覆的钢板及其制造方法 | |
CN115698365B (zh) | 经热处理的冷轧钢板及其制造方法 | |
CN115698346A (zh) | 经热处理的冷轧钢板及其制造方法 | |
CN114787396A (zh) | 经热处理的冷轧钢板及其制造方法 | |
CN114761583B (zh) | 经热处理的冷轧钢板及其制造方法 | |
EP3708691A1 (en) | Ultrahigh-strength and high-ductility steel sheet having excellent cold formability, and manufacturing method therefor | |
WO2024033688A1 (en) | A cold rolled martensitic steel and method of producing thereof | |
WO2023223078A1 (en) | A martensitic steel sheet and a method of manunfacturing thereof | |
WO2023073411A1 (en) | Cold rolled and heat treated steel sheet and a method of manufacturing thereof |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |