CN111315908A - 冷轧钢板及其制造方法 - Google Patents
冷轧钢板及其制造方法 Download PDFInfo
- Publication number
- CN111315908A CN111315908A CN201880072374.0A CN201880072374A CN111315908A CN 111315908 A CN111315908 A CN 111315908A CN 201880072374 A CN201880072374 A CN 201880072374A CN 111315908 A CN111315908 A CN 111315908A
- Authority
- CN
- China
- Prior art keywords
- percent
- equal
- steel sheet
- less
- 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.)
- Pending
Links
- 239000010960 cold rolled steel Substances 0.000 title claims description 22
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 239000010959 steel Substances 0.000 claims abstract description 118
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 117
- 229910000734 martensite Inorganic materials 0.000 claims abstract description 29
- 229910001566 austenite Inorganic materials 0.000 claims abstract description 25
- 229910001563 bainite Inorganic materials 0.000 claims abstract description 24
- 239000000203 mixture Substances 0.000 claims abstract description 20
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 16
- 239000010955 niobium Substances 0.000 claims abstract description 16
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 14
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 12
- 230000000717 retained effect Effects 0.000 claims abstract description 12
- 239000010936 titanium Substances 0.000 claims abstract description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000010703 silicon Substances 0.000 claims abstract description 10
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 10
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 10
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000011593 sulfur Substances 0.000 claims abstract description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 8
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000012535 impurity Substances 0.000 claims abstract description 8
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 8
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims abstract description 7
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 6
- 239000011651 chromium Substances 0.000 claims abstract description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 6
- 229910052698 phosphorus 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
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000011575 calcium Substances 0.000 claims abstract description 5
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 5
- 229910052742 iron 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
- 239000011574 phosphorus Substances 0.000 claims abstract description 5
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052684 Cerium Inorganic materials 0.000 claims abstract description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 4
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052796 boron Inorganic materials 0.000 claims abstract description 4
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 4
- 239000011777 magnesium Substances 0.000 claims abstract description 4
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 4
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052802 copper Inorganic materials 0.000 claims abstract description 3
- 239000010949 copper Substances 0.000 claims abstract description 3
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 3
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000011572 manganese Substances 0.000 claims description 20
- 229910052748 manganese Inorganic materials 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 17
- 238000001816 cooling Methods 0.000 claims description 16
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 14
- 238000000137 annealing Methods 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000005096 rolling process Methods 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 8
- 238000002791 soaking Methods 0.000 claims description 8
- 238000005098 hot rolling Methods 0.000 claims description 6
- 230000009467 reduction Effects 0.000 claims description 4
- 238000005097 cold rolling Methods 0.000 claims description 2
- 238000003303 reheating Methods 0.000 claims description 2
- 238000005496 tempering Methods 0.000 claims description 2
- 230000001186 cumulative effect Effects 0.000 claims 2
- 239000011265 semifinished product Substances 0.000 claims 2
- 239000004480 active ingredient Substances 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
- 230000009466 transformation Effects 0.000 description 8
- 229910000859 α-Fe Inorganic materials 0.000 description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 7
- 150000001247 metal acetylides Chemical class 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 230000001627 detrimental effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- -1 3.4% Chemical compound 0.000 description 4
- 238000009749 continuous casting Methods 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 4
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000000047 product Substances 0.000 description 3
- 238000001953 recrystallisation Methods 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000002411 adverse Effects 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
- 238000009835 boiling Methods 0.000 description 1
- 229910001567 cementite Inorganic materials 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 229910001562 pearlite Inorganic materials 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 229910001568 polygonal ferrite Inorganic materials 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000004881 precipitation hardening Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 150000004763 sulfides Chemical class 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 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
- C22C38/18—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
- B21B3/02—Rolling special iron alloys, e.g. stainless steel
-
- 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
- C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/008—Heat treatment of ferrous alloys containing Si
-
- 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
-
- 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
- C21D8/0268—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment between cold rolling steps
-
- 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
- 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
- C22C38/002—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
- C22C38/02—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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
-
- 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
- C21D2211/008—Martensite
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
一种冷轧热处理钢板,其具有包含以下元素的组成:按重量百分比表示,0.1%≤碳≤0.5%,1%≤锰≤3.4%,0.5%≤硅≤2.5%,0.03%≤铝≤1.5%,0%≤硫≤0.003%,0.002%≤磷≤0.02%,0%≤氮≤0.01%,并且可以包含以下任选元素中的一者或更多者:0.05%≤铬≤1%,0.001%≤钼≤0.5%,0.001%≤铌≤0.1%,0.001%≤钛≤0.1%,0.01%≤铜≤2%,0.01%≤镍≤3%,0.0001%≤钙≤0.005%,0%≤钒≤0.1%,0%≤硼≤0.003%,0%≤铈≤0.1%,0%≤镁≤0.010%,0%≤锆≤0.010%,剩余部分组成由铁和由加工引起的不可避免的杂质构成,所述钢板的显微组织包含:按面积分数计,10%至30%残余奥氏体,50%至85%贝氏体,1%至20%淬火马氏体和少于30%回火马氏体。
Description
本发明涉及适合用作汽车用钢板的冷轧热处理钢板。
汽车零部件需要满足两个相悖的需求,即,易于成形和强度,但是,近年来鉴于全球环境问题,还对汽车提出了改善燃料消耗的第三要求。因此,现有的汽车零部件必须由具有高可成形性的材料制成,以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改善强度,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量。相反,钢板的强度增加使可成形性降低,因此需要开发兼具高强度和高可成形性的材料。
在高强度和高可成形性钢板的领域中,早期的研究和开发已经产生了几种用于制造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用于对本发明的明确理解:
专利EP3144406要求保护具有优异延性的高强度冷轧钢板,所述高强度冷轧钢板包含:按重量%计,碳(C):0.1%至0.3%,硅(Si):0.1%至2.0%,铝(Al):0.005%至1.5%,锰(Mn):1.5%至3.0%,磷(P):0.04%或更少(不包括0%),硫(S):0.015%或更少(不包括0%),氮(N):0.02%或更少(不包括0%),以及剩余部分为铁(Fe)和不可避免的杂质,其中硅和铝(Si+Al)的总和(重量%)满足1.0%或更大,并且其中显微组织包含:按面积分数计,5%或更少的短轴与长轴比为0.4或更大的多角形铁素体,70%或更少(不包括0%)的短轴与长轴比为0.4或更小的针状铁素体,25%或更少(不包括0%)的针状残余奥氏体,以及剩余部分为马氏体。此外,EP3144406设想了抗拉强度为780MPa或更大的高强度钢。
EP3128023提及了具有优异的延伸率、扩孔性(hole expandability)和耐延迟断裂性和高屈强比的高强度冷轧钢板及制造所述钢板的方法。高屈强比、高强度冷轧钢板具有包含以下的组成:按照质量%计,C:0.13%至0.25%,Si:1.2%至2.2%,Mn:2.0%至3.2%,P:0.08%或更少,S:0.005%或更少,Al:0.01%至0.08%,N:0.008%或更少,Ti:0.055%至0.130%,以及余量为Fe和不可避免的杂质。所述钢板具有包含以下的显微组织:按照体积分数计2%至15%的平均晶粒直径为2μm或更小的铁素体,按照体积分数计5%至20%的平均晶粒直径为0.3μm至2.0μm的残余奥氏体,按照体积分数计10%或更少(包括0%)的平均晶粒直径为2μm或更小的马氏体,以及余量为贝氏体和回火马氏体,并且贝氏体和回火马氏体具有5μm或更小的平均晶粒直径。
EP3009527提供了具有优异的延伸率、优异的拉伸凸缘性(stretchflangeability)和高屈强比的高强度冷轧钢板及其制造方法。该高强度冷轧钢板具有一定的组成和显微组织。所述组成包含:基于质量,0.15%至0.27%C,0.8%至2.4%Si,2.3%至3.5%Mn,0.08%或更少的P,0.005%或更少的S,0.01%至0.08%Al以及0.010%或更少的N,剩余部分为铁和不可避免的杂质。所述显微组织包含:平均晶粒尺寸为5μm或更小且体积分数为3%至20%的铁素体,体积分数为5%至20%的残余奥氏体,以及体积分数为5%至20的%马氏体,剩余部分为贝氏体和/或回火马氏体。平行于钢板的轧制方向的厚度截面的每2,000μm2,晶粒尺寸为2μm或更小的残余奥氏体、晶粒尺寸为2μm或更小的马氏体或其混合相的总数为150或更大。
另一个专利申请WO2015/177615也描述了双重退火钢板,其组成包含:含量以重量百分比表示,0.20%≤C≤0.40%,0.8%≤Mn≤1.4%,1.60%≤Si≤3.00%,0.015%≤Nb≤0.150%,Al≤0.1%,Cr≤1.0%,S≤0.006%,P≤0.030%,Ti≤0.05%,V≤0.05%,B≤0.003%,N≤0.01%,组成的其余部分由铁和由制造产生的不可避免的杂质组成,显微组织由以下组成:按表面积比例计,10%至30%的残余奥氏体,30%至60%的退火马氏体,5%至30%的贝氏体,10%至30%的淬火马氏体以及少于10%的铁素体。此外,WO2015/177615设想了980MPa或更大的强度。
本发明的目的是通过提供冷轧钢板来解决这些问题,所述冷轧钢板同时具有:
-大于或等于1100MPa,并且优选大于1180MPa的极限抗拉强度,
-大于或等于14.0%,并且优选大于15%的总延伸率。
在一个优选实施方案中,根据本发明的钢板的屈服强度与抗拉强度比也可以为0.65或更大。
优选地,这样的钢还可以具有良好的成形适应性,特别是对于轧制,并且具有良好的可焊性和可涂覆性。
本发明的另一个目的还在于提供与常规工业应用相容同时对制造参数变化稳健的用于制造这些板的方法。
本发明的以上目的和其他优点将通过参照附图详细描述本发明的优选实施方案而变得更加明显,其中:
本发明的冷轧热处理钢板可以任选地涂覆有锌或锌合金,或涂覆有铝或铝合金以改善其抗腐蚀性。
碳以0.10%至0.5%存在于钢中。碳是通过产生低温转变相例如马氏体来增加钢板的强度所必需的元素,此外,碳在奥氏体稳定化中也起着关键作用,因此是用于确保残余奥氏体的必要元素。
本发明的钢的锰含量为1%至3.4%。该元素是γ相生成元素(gammagenous)。添加锰的目的主要是为了获得包含奥氏体的组织并赋予钢以强度。锰是使奥氏体稳定以获得残余奥氏体的元素。已经发现至少约1重量%的量的锰用于提供钢板的强度和淬透性以及稳定奥氏体。因此,本发明优选较高百分比的锰,例如3.4%。但是,当锰含量大于3.4%时,其产生不利影响,例如其在用于贝氏体转变的等温保持期间阻碍了奥氏体向贝氏体的转变。此外,大于3.4%的锰含量还使该钢的可焊性劣化,因此可能无法实现延性目标。锰的优选范围为1.2%至2.3%,并且更优选的范围为1.2%至2.2%。
本发明钢的硅成分为0.5%至2.5%。硅是可以在过时效期间阻碍碳化物析出的成分,因此,由于硅的存在,富碳奥氏体在室温下稳定。此外,由于硅在碳化物中的固溶性差,其有效地抑制或阻碍了碳化物的形成,因此也促进了贝氏体组织中低密度碳化物的形成,这是根据本发明为了赋予钢其基本特征所寻求的。但是,不相称的硅含量并不能增加上述效果而且导致例如热轧脆化的问题。因此,将浓度控制在2.5%的上限以内。
在本发明中,铝的含量为0.03%至1.5%,因为铝除去存在于钢水中的氧以防止氧形成气体相并在凝固过程期间沸腾。铝还将氮固定在钢中以形成铝氮化物,从而减小晶粒的尺寸。大于1.5%的较高含量的铝使Ac3点升高,从而增加了制造钢所需的能量输入。当添加高的锰含量时,可以使用1.0%至1.5%的铝含量以平衡锰对转变点的影响和对奥氏体随温度的形成演变的影响。
本发明的钢的铬含量为0.05%至1%。铬是为钢提供强度和硬化的必需元素,但是当使用大于1%时会损害钢的表面光洁度。此外,铬含量低于1%使贝氏体组织中碳化物的分散图案粗化,因此使贝氏体中碳化物的密度保持在低水平。
本发明的钢的磷成分为0.002%至0.02%。磷特别是由于其倾向于在晶界处偏析或者与锰共偏析而使可点焊性和热延性降低。由于这些原因,将其含量限制到0.02%,并且优选降低至0.013%。
硫不是必需元素,但可以作为杂质包含在钢中,并且从本发明的观点出发,硫含量优选尽可能低,但是从制造成本的观点出发硫含量为0.003%或更低。此外,如果钢中存在较高的硫,则硫尤其与锰和钛结合形成硫化物,并且使它们对本发明的有益影响减小,这可能对可成形性有害。
铌以0.001%至0.1%存在于钢中,并且适于通过析出硬化形成碳氮化物以赋予本发明的钢以强度。铌还通过其作为碳氮化物的析出以及通过阻碍加热过程期间的再结晶而影响显微组织组分的尺寸。因此,在保持温度结束时并因此在完全退火之后形成的更精细的显微组织将导致产品的硬化。然而,铌含量大于0.1%在经济上是不利的,因为观察到了其饱和作用的影响,这意味着额外量的铌不会导致产品的任何强度改善。
钛是任选的元素,钛可以以0.001%至0.1%添加至本发明的钢中。与铌一样,钛也形成碳氮化物析出物,因此在钢的强化中起作用。但其也形成在铸造产品的凝固期间出现的钛氮化物。因此将钛的量限制到0.1%以避免对可成形性有害的粗的氮化钛。在钛含量低于0.001%的情况下,其不会对本发明的钢产生任何影响。
钙以0.0001%至0.005%添加到本发明的钢中。钙作为任选的元素尤其是在夹杂物处理期间添加至本发明的钢中。钙通过抑制球状形式的有害的硫内容物而有助于钢的精炼,从而阻碍了硫的有害作用。
钼是构成本发明的钢的0.001%至0.5%的任选元素;钼在确定淬透性和硬度方面起有效作用,延迟贝氏体的出现并且避免碳化物在贝氏体中析出。然而,钼的过度添加使合金元素的添加成本增加,因此出于经济原因,将其含量限制到0.5%。
铜可以以0.01%至2%的量作为任选元素添加以增加钢的强度并改善其抗腐蚀性。要获得这样的效果需要最少0.01%。然而,当其含量大于2%时,其可能使表面外观劣化。
镍可以以0.01%至3%的量作为任选元素添加以增加钢的强度并改善其韧性。要获得这样的效果需要最少0.01%。然而,当其含量大于3%时,镍导致延性劣化。
将氮限制到0.01%以避免材料的老化并且使对钢的机械特性有害的凝固期间的铝氮化物的析出最小化。
钒通过形成碳化物或碳氮化物有效地提高钢的强度,并且从经济观点出发上限为0.1%。其他元素例如铈、硼、镁或锆可以单独添加或以以下比例组合添加:铈≤0.1%,硼≤0.003%,镁≤0.01%以及锆≤0.01%,直至所指出的最大含量水平,这些元素使得可以在凝固期间使晶粒细化。
钢的组成的剩余部分由铁和由加工产生的不可避免的杂质组成。
本发明要求保护的板的显微组织由以下组成:
对于本发明的钢而言,按面积分数计,贝氏体构成显微组织的50%至85%。在本发明中,贝氏体由板条贝氏体和粒状贝氏体累积组成,其中粒状贝氏体具有非常低的碳化物密度,本文中的低的碳化物密度意指碳化物的存在计数为每100μm2面积单位小于或等于100个碳化物,并且具有高位错密度,这赋予了本发明的钢高强度以及延伸率。板条贝氏体呈薄铁素体板条的形式,其中奥氏体或碳化物形成在板条之间。本发明的钢的板条贝氏体为钢提供了足够的可成形性。为了确保14%并且优选15%或更大的总延伸率,有利的是具有50%的贝氏体。
按面积分数计,本发明的钢的残余奥氏体含量为显微组织的10%至30%。已知残余奥氏体比贝氏体具有更高的碳固溶性,并因此,用作有效的碳捕集,从而阻碍贝氏体中碳化物的形成。本发明的残余奥氏体中的碳百分比优选大于0.9%,并且优选小于1.1%。根据本发明的钢的残余奥氏体赋予增加的延性。
按面积分数计,淬火马氏体构成显微组织的1%至20%。淬火马氏体赋予本发明以强度。淬火马氏体在二次退火的最终冷却期间形成。最小值没有要求,但是当淬火马氏体超过20%时,其赋予过度的强度,而且使其他机械特性劣化超出可接受的限度。
按面积分数计,回火马氏体构成显微组织的0%至30%。马氏体可以在将钢在Tc最小至Tc最大冷却并在过时效保持期间回火时形成。回火马氏体赋予本发明以延性和强度。当回火马氏体超过30%时,其赋予过度的强度,而且将延伸率减小超出可接受的限度。此外,回火马氏体减小了软质相(例如残余奥氏体)与硬质相(例如淬火马氏体)的硬度差距。
除上述显微组织以外,钢板还可以具有铁素体,其按照面积比计占小于5%,优选地小于3%,并且显微组织不含诸如珠光体或渗碳体的显微组织组分,不会损害钢板的机械特性。
根据本发明的钢板可以通过任何合适的方法来制造。一种优选方法在于提供具有根据本发明的化学组成的钢的半成品铸件。可以将铸件制成铸锭,或连续地制成薄板坯或薄带材的形式,即,其中厚度范围从板坯的约220mm至薄带材的几十毫米。
例如,具有上述化学组成的板坯通过连铸制造,其中板坯在连铸过程期间任选地经历直接轻压下以避免中心偏析并且确保局部碳与标称碳之比保持低于1.10。通过连铸过程提供的板坯可以在连铸之后直接在高温下使用,或者可以先冷却至室温然后再加热以用于热轧。
进行热轧的板坯的温度优选为至少1200℃并且必须低于1280℃。在板坯的温度低于1200℃的情况下,对轧机施加过大的负荷,并且此外,在精轧期间钢的温度可能降低至铁素体转变温度,从而钢将轧制成其中在组织中包含转变铁素体的状态。因此,优选板坯的温度足够高使得热轧可以在Ac3至Ac3+100℃的温度范围内完成并且终轧温度保持高于Ac3。必须避免在高于1280℃的温度下再加热,因为其在工业上是昂贵的。
优选终轧温度范围为Ac3至Ac3+100℃以具有有利于再结晶和轧制的组织。必须使终轧道次在高于Ac3的温度下进行,因为低于该温度,钢板表现出显著降低的可轧制性。然后将以该方式获得的板以大于30℃/秒的冷却速率冷却至必须低于600℃的卷取温度。优选地,冷却速率小于或等于200℃/秒。
将热轧钢板在低于600℃的卷取温度下卷取以避免热轧钢板的椭圆化(ovalization),并且优选低于570℃以避免形成氧化皮。卷取温度的优选范围为350℃至570℃。然后将卷取的热轧钢板冷却至室温,然后对其进行任选的热带退火(hot bandannealing)。
可以对热轧钢板进行任选的氧化皮除去步骤以除去在热轧期间形成的氧化皮。然后可以在400℃至750℃的温度下对热轧板进行任选的热带退火持续至少12小时且不超过96小时,同时将温度保持低于750℃以避免热轧显微组织的部分转变并因此失去显微组织均匀性。此后,可以进行该热轧钢板的任选的氧化皮除去步骤,例如,对这样的板进行例如酸洗。以35%至90%的厚度压下率对该热轧钢板进行冷轧。然后对由冷轧过程获得的冷轧钢板进行两步退火以赋予本发明的钢以显微组织和机械特性。
在初次退火中,将冷轧钢板以大于3℃/秒的加热速率加热至Ac3至Ac3+100℃的均热温度,其中该钢的Ac3通过使用下式计算:
Ac3=901-262*C-29*Mn+31*Si-12*Cr-155*Nb+86*Al
其中元素含量按重量百分比表示。
然后将钢板在均热温度下保持10秒至500秒的时间以确保完全再结晶并充分转变为强加工硬化的初始组织的奥氏体。然后将板以大于20℃/秒的冷却速率冷却至低于500℃,并且优选低于400℃。此外,优选冷却速率大于30℃/秒以确保马氏体的单相组织。
然后使冷轧钢板的温度达到室温。可以将冷轧退火钢板在120℃至250℃的温度之间任选地回火。
冷轧退火钢板的二次退火通过以大于3℃/秒的加热速率将退火冷轧钢板加热到高于Ac3至Ac3+100℃的均热温度范围来进行,其中Ac3通过使用式Ac3=901-262*C-29*Mn+31*Si-12*Cr-155*Nb+86*Al来计算,持续10秒至500秒以确保100%转变为奥氏体显微组织。然后以大于20℃/秒的冷却速率将板冷却至Tc最小至Tc最大的温度范围持续1秒至10秒的持续时间。这些温度通过使用本文中提出的下式来计算:
-Tc最大=565-601*(1-Exp(-0.868*C))-34*Mn-13*Si-10*Cr+13*Al-361*Nb
-Tc最小=565-601*(1-Exp(-1.736*C))-34*Mn-13*Si-10*Cr+13*Al-361*Nb
其中元素含量按重量百分比表示。
其后,使冷轧退火钢板达到350℃至550℃的温度范围并在此保持5秒至500秒的时间以确保形成足够量的贝氏体以及对马氏体进行回火以赋予本发明的钢以目标机械特性。然后,将冷轧退火钢板以至少1℃/秒或更大的冷却速率冷却至室温以获得冷轧热处理钢板。
冷轧热处理钢板可以经历另外的任选的热处理步骤以促进涂覆过程,所述任选的热处理步骤对本发明的钢的机械特性没有任何影响。然后可以通过任何已知的工业方法(例如,电镀锌、JVD、PVD、热浸镀(GI/GA)等)任选地涂覆冷轧钢板。电镀锌不会改变或更改所要求保护的钢板的任何机械特性或显微组织。可以通过任何常规的工业方法例如通过电镀来进行电镀锌。
本文中呈现的以下测试、实施例、图形示例和表格本质上是非限制性的,并且必须被认为是仅出于说明的目的,并且将显示本发明的有利特征。
表1中收集了由具有不同组成的钢制成的钢板,其中分别根据表2中记明的工艺参数生产钢板。表3收集了在试验期间获得的钢板的显微组织,表4收集了获得的特性的评估结果。
表1
表2
表2收集了对表1的钢实施的退火工艺参数。钢组成I1至I3用于制造根据本发明的板。该表还详细说明了参照钢的组成,其在表中指定为R1至R3。表2还示出了本发明的钢和参照钢的Tc最小和Tc最大温度的列表。Tc最小和Tc最大通过使用下式计算:
-Tc最大=565-601*(1-Exp(-0.868*C))-34*Mn-13*Si-10*Cr+13*Al-361*Nb
-Tc最小=565-601*(1-Exp(-1.736*C))-34*Mn-13*Si-10*Cr+13*Al-361*Nb
此外,在对本发明的钢以及参照钢进行退火处理之前,将钢加热至1000℃至1280℃的温度,然后进行终轧温度高于850℃的热轧,其后在低于600℃的温度下卷取。然后如所要求保护的对热轧卷材进行处理,其后以30%至95%的厚度压下率进行冷轧。如本文中的表2中所列举的对这些冷轧钢板进行热处理:
表3
表3例示了根据标准在不同的显微镜(例如扫描电子显微镜)上进行的用于确定本发明的钢和参照钢两者的显微组织组成的测试的结果。
结果记明在此:
I:根据本发明;R=参照;带下划线的值:未根据本发明。
表4
表4例示了本发明的钢和参照钢两者的机械特性。抗拉强度、屈服强度和总延伸率测试根据JIS Z2241标准进行。
此后,将根据标准进行的各种机械测试的结果制表:
I:根据本发明;R=参照;带下划线的值:未根据本发明。
Claims (17)
1.一种冷轧热处理钢板,具有包含以下元素的组成:按重量百分比表示,
0.1%≤碳≤0.5%
1%≤锰≤3.4%
0.5%≤硅≤2.5%
0.03%≤铝≤1.5%
0%≤硫≤0.003%
0.002%≤磷≤0.02%
0%≤氮≤0.01%
并且能够包含以下任选元素中的一者或更多者:
0.05%≤铬≤1%
0.001%≤钼≤0.5%
0.001%≤铌≤0.1%
0.001%≤钛≤0.1%
0.01%≤铜≤2%
0.01%≤镍≤3%
0.0001%≤钙≤0.005%
0%≤钒≤0.1%
0%≤硼≤0.003%
0%≤铈≤0.1%
0%≤镁≤0.010%
0%≤锆≤0.010%
剩余部分组成由铁和由加工引起的不可避免的杂质构成,所述钢板的显微组织包含:按面积分数计,10%至30%残余奥氏体、50%至85%贝氏体、1%至20%淬火马氏体和少于30%回火马氏体。
2.根据权利要求1所述的冷轧热处理钢,其中所述组成包含0.7%至2.4%的硅。
3.根据权利要求1或2所述的冷轧热处理钢,其中所述组成包含0.03%至0.9%的铝。
4.根据权利要求3所述的冷轧热处理钢,其中所述组成包含0.03%至0.6%的铝。
5.根据权利要求1至4所述的冷轧热处理钢,其中所述组成包含1.2%至2.3%的锰。
6.根据权利要求1至5所述的冷轧热处理钢,其中所述组成包含0.03%至0.5%的铬。
7.根据权利要求1至6中任一项所述的冷轧热处理钢,其中贝氏体和残余奥氏体的累积量等于70%或更大。
8.根据权利要求1至7中任一项所述的冷轧热处理钢,其中回火马氏体和淬火马氏体的累积量大于或等于20%,并且淬火马氏体的百分比大于10%。
9.根据权利要求1至8中任一项所述的冷轧热处理钢,其中所述钢板具有1100MPa的极限抗拉强度和14.0%或更大的总延伸率。
10.根据权利要求9所述的冷轧热处理钢,其中所述钢板具有1100MPa或更大的极限抗拉强度、以及大于或等于0.65的屈服强度与极限抗拉强度比。
11.一种制造冷轧热处理钢板的方法,包括以下依次步骤:
-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1200℃至1280℃的温度;
-在奥氏体范围内对所述半成品进行轧制以获得热轧钢板,其中热精轧温度应高于Ac3;
-以大于30℃/秒的冷却速率将所述板冷却至低于600℃的卷取温度;以及卷取所述热轧板;
-将所述热轧板冷却至室温;
-任选地对所述热轧钢板进行氧化皮除去过程;
-任选地,可以在400℃至750℃的温度下对热轧钢板进行退火;
-任选地对所述热轧钢板进行氧化皮除去过程;
-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;
-然后以大于3℃/秒的速率将所述冷轧钢板加热至Ac3至Ac3+100℃的均热温度,在所述均热温度下将所述冷轧钢板保持10秒至500秒的时间;
-然后以大于20℃/秒的速率将所述板冷却至低于500℃的温度;
-然后将所述退火冷轧钢板冷却至室温;
-任选地在120℃至250℃之间对所述退火钢板进行回火;
-然后以大于3℃/秒的速率将所述退火冷轧钢板加热至Ac3至Ac3+100℃的均热温度,在所述均热温度下将所述退火冷轧钢板保持10秒至500秒的时间;
-然后以大于20℃/秒的速率将所述板冷却至Tc最大至Tc最小的温度范围,其中:
Tc最大=565-601*(1-Exp(-0.868*C))-34*Mn-13*Si-10*Cr+13*Al-361*Nb
Tc最小=565-601*(1-Exp(-1.736*C))-34*Mn-13*Si-10*Cr+13*Al-361*Nb
-然后使所述退火冷轧钢板达到350℃至550℃的保持温度范围持续5秒至500秒的时间段,然后以1℃/秒直至室温的冷却速率将所述退火冷轧钢板冷却至室温以获得冷轧热处理钢板;
-任选地可以对所述冷轧热处理钢板进行涂覆。
12.根据权利要求11所述的方法,其中所述卷取温度低于570℃。
13.根据权利要求11或12所述的方法,其中用于初次退火或二次退火的均热温度为Ac3至Ac3+50℃。
14.根据权利要求11至13所述的方法,其中在初次退火或二次退火之后的所述冷却速率大于30℃/秒,直至低于500℃的温度。
15.根据权利要求1至10中任一项所述的钢板或根据权利要求11至14所述的方法制造的钢板用于制造车辆的结构或安全零部件的用途。
16.一种根据权利要求15获得的零部件,通过对所述钢板进行柔性轧制而获得。
17.一种车辆,包括根据权利要求11至16中任一项获得的零部件。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IBPCT/IB2017/057039 | 2017-11-10 | ||
PCT/IB2017/057039 WO2019092481A1 (en) | 2017-11-10 | 2017-11-10 | Cold rolled steel sheet and a method of manufacturing thereof |
PCT/IB2018/058666 WO2019092578A1 (en) | 2017-11-10 | 2018-11-05 | Cold rolled steel sheet and a method of manufacturing thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
CN111315908A true CN111315908A (zh) | 2020-06-19 |
Family
ID=60582629
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201880072374.0A Pending CN111315908A (zh) | 2017-11-10 | 2018-11-05 | 冷轧钢板及其制造方法 |
Country Status (13)
Country | Link |
---|---|
US (1) | US11920207B2 (zh) |
EP (1) | EP3707288A1 (zh) |
JP (2) | JP2021502488A (zh) |
KR (1) | KR102451862B1 (zh) |
CN (1) | CN111315908A (zh) |
BR (1) | BR112020007515A2 (zh) |
CA (1) | CA3080680C (zh) |
MA (1) | MA50556A (zh) |
MX (1) | MX2020004769A (zh) |
RU (1) | RU2020117334A (zh) |
UA (1) | UA127381C2 (zh) |
WO (2) | WO2019092481A1 (zh) |
ZA (1) | ZA202002308B (zh) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113403549A (zh) * | 2021-05-21 | 2021-09-17 | 鞍钢股份有限公司 | 1.2GPa级耐疲劳高成形性超高强汽车钢及制备方法 |
CN114381655A (zh) * | 2020-10-21 | 2022-04-22 | 宝山钢铁股份有限公司 | 一种高强塑积冷轧qp钢及其退火工艺和制造方法 |
WO2022206911A1 (zh) * | 2021-04-02 | 2022-10-06 | 宝山钢铁股份有限公司 | 抗拉强度≥1180MPa的低碳低合金Q&P钢或热镀锌Q&P钢及其制造方法 |
CN115181898A (zh) * | 2021-04-02 | 2022-10-14 | 宝山钢铁股份有限公司 | 一种1280MPa级别低碳低合金Q&P钢及其快速热处理制造方法 |
CN115584428A (zh) * | 2022-11-07 | 2023-01-10 | 鞍钢股份有限公司 | 一种新型短流程低成本冷轧dh590钢及其生产方法 |
CN115852262A (zh) * | 2021-09-23 | 2023-03-28 | 宝山钢铁股份有限公司 | 一种锯片钢及其制造方法 |
CN116377320A (zh) * | 2023-03-23 | 2023-07-04 | 鞍钢股份有限公司 | 一种高强塑积的冷轧汽车用超高强钢及其制造方法 |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020096555A2 (en) * | 2018-11-08 | 2020-05-14 | Coşkunöz Kalip Maki̇na Sanayi̇ Ve Ti̇caret Anoni̇m Şi̇rketi̇ | Steel production method providing high energy absorption with mn partitioning and rapid heating |
MX2022007053A (es) * | 2019-12-13 | 2022-07-11 | Arcelormittal | Hoja de acero laminada en frio tratada termicamente y un metodo de fabricacion de la misma. |
CN111690801B (zh) * | 2020-05-25 | 2021-11-02 | 中天钢铁集团有限公司 | 一种获得全贝氏体组织的合金工具钢盘条生产工艺 |
CN116034173A (zh) * | 2020-09-23 | 2023-04-28 | 安赛乐米塔尔公司 | 经冷轧和涂覆的钢板及其制造方法 |
EP4259838A1 (en) * | 2020-12-08 | 2023-10-18 | ArcelorMittal | Cold rolled and heat treated steel sheet and a method of manufacturing thereof |
KR102485009B1 (ko) * | 2020-12-17 | 2023-01-04 | 주식회사 포스코 | 가공성이 우수한 고강도 강판 및 그 제조방법 |
KR102485006B1 (ko) * | 2020-12-17 | 2023-01-04 | 주식회사 포스코 | 가공성이 우수한 고강도 강판 및 그 제조방법 |
KR102485004B1 (ko) * | 2020-12-17 | 2023-01-04 | 주식회사 포스코 | 가공성이 우수한 고강도 강판 및 그 제조방법 |
KR102485007B1 (ko) * | 2020-12-17 | 2023-01-04 | 주식회사 포스코 | 가공성이 우수한 고강도 강판 및 그 제조방법 |
KR102485013B1 (ko) * | 2020-12-17 | 2023-01-04 | 주식회사 포스코 | 가공성이 우수한 고강도 강판 및 그 제조방법 |
CN115044834A (zh) * | 2022-06-20 | 2022-09-13 | 西王金属科技有限公司 | 一种低合金高强度钢及制备方法 |
CN115058658B (zh) * | 2022-07-04 | 2023-10-27 | 上海五牛金属材料有限公司 | 曲轴、曲轴用钢及其制备方法 |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101928875A (zh) * | 2009-06-22 | 2010-12-29 | 鞍钢股份有限公司 | 具有良好成形性能的高强度冷轧钢板及其制备方法 |
JP2013072101A (ja) * | 2011-09-27 | 2013-04-22 | Jfe Steel Corp | 高強度鋼板およびその製造方法 |
CN103842541A (zh) * | 2011-09-30 | 2014-06-04 | 新日铁住金株式会社 | 烘烤硬化性优良的高强度热浸镀锌钢板、高强度合金化热浸镀锌钢板以及它们的制造方法 |
CN104532129A (zh) * | 2015-01-06 | 2015-04-22 | 东北大学 | 汽车用免镀锌高强度和塑性冷轧不锈钢板及其制造方法 |
CN105492643A (zh) * | 2013-08-09 | 2016-04-13 | 杰富意钢铁株式会社 | 高强度冷轧钢板及其制造方法 |
CN105940134A (zh) * | 2014-01-29 | 2016-09-14 | 杰富意钢铁株式会社 | 高强度冷轧钢板及其制造方法 |
CN106661653A (zh) * | 2014-07-03 | 2017-05-10 | 安赛乐米塔尔公司 | 用于制造高强度钢板的方法和获得的板 |
WO2017138503A1 (ja) * | 2016-02-10 | 2017-08-17 | Jfeスチール株式会社 | 高強度鋼板およびその製造方法 |
WO2017138504A1 (ja) * | 2016-02-10 | 2017-08-17 | Jfeスチール株式会社 | 高強度鋼板及びその製造方法 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6395108B2 (en) | 1998-07-08 | 2002-05-28 | Recherche Et Developpement Du Groupe Cockerill Sambre | Flat product, such as sheet, made of steel having a high yield strength and exhibiting good ductility and process for manufacturing this product |
KR100608555B1 (ko) * | 2002-03-18 | 2006-08-08 | 제이에프이 스틸 가부시키가이샤 | 연성 및 내피로특성에 우수한 고장력 용융 아연도금강판의제조방법 |
JP4068950B2 (ja) * | 2002-12-06 | 2008-03-26 | 株式会社神戸製鋼所 | 温間加工による伸び及び伸びフランジ性に優れた高強度鋼板、温間加工方法、及び温間加工された高強度部材または高強度部品 |
JP4291860B2 (ja) * | 2006-07-14 | 2009-07-08 | 株式会社神戸製鋼所 | 高強度鋼板およびその製造方法 |
JP5418047B2 (ja) * | 2008-09-10 | 2014-02-19 | Jfeスチール株式会社 | 高強度鋼板およびその製造方法 |
JP5400484B2 (ja) * | 2009-06-09 | 2014-01-29 | 株式会社神戸製鋼所 | 伸び、伸びフランジ性および溶接性を兼備した高強度冷延鋼板 |
JP5883211B2 (ja) * | 2010-01-29 | 2016-03-09 | 株式会社神戸製鋼所 | 加工性に優れた高強度冷延鋼板およびその製造方法 |
JP5327106B2 (ja) * | 2010-03-09 | 2013-10-30 | Jfeスチール株式会社 | プレス部材およびその製造方法 |
JP5454745B2 (ja) * | 2011-10-04 | 2014-03-26 | Jfeスチール株式会社 | 高強度鋼板およびその製造方法 |
JP5780171B2 (ja) | 2012-02-09 | 2015-09-16 | 新日鐵住金株式会社 | 曲げ性に優れた高強度冷延鋼板、高強度亜鉛めっき鋼板及び高強度合金化溶融亜鉛めっき鋼板とその製造方法 |
US10253389B2 (en) | 2014-03-31 | 2019-04-09 | Jfe Steel Corporation | High-yield-ratio, high-strength cold-rolled steel sheet and production method therefor |
KR101594670B1 (ko) | 2014-05-13 | 2016-02-17 | 주식회사 포스코 | 연성이 우수한 고강도 냉연강판, 용융아연도금강판 및 이들의 제조방법 |
WO2015177582A1 (fr) | 2014-05-20 | 2015-11-26 | Arcelormittal Investigación Y Desarrollo Sl | Tôle d'acier doublement recuite à hautes caractéristiques mécaniques de résistance et ductilité, procédé de fabrication et utilisation de telles tôles |
JP6601253B2 (ja) * | 2016-02-18 | 2019-11-06 | 日本製鉄株式会社 | 高強度鋼板 |
BR112018012681A2 (pt) * | 2016-03-25 | 2018-12-04 | Nippon Steel & Sumitomo Metal Corporation | chapa de aço de alta resistência e chapa de aço galvanizada de alta resistência |
-
2017
- 2017-11-10 WO PCT/IB2017/057039 patent/WO2019092481A1/en active Application Filing
-
2018
- 2018-11-05 CN CN201880072374.0A patent/CN111315908A/zh active Pending
- 2018-11-05 JP JP2020526020A patent/JP2021502488A/ja active Pending
- 2018-11-05 BR BR112020007515-9A patent/BR112020007515A2/pt not_active Application Discontinuation
- 2018-11-05 EP EP18797163.5A patent/EP3707288A1/en active Pending
- 2018-11-05 US US16/761,417 patent/US11920207B2/en active Active
- 2018-11-05 WO PCT/IB2018/058666 patent/WO2019092578A1/en unknown
- 2018-11-05 MX MX2020004769A patent/MX2020004769A/es unknown
- 2018-11-05 UA UAA202003308A patent/UA127381C2/uk unknown
- 2018-11-05 RU RU2020117334A patent/RU2020117334A/ru unknown
- 2018-11-05 CA CA3080680A patent/CA3080680C/en active Active
- 2018-11-05 MA MA050556A patent/MA50556A/fr unknown
- 2018-11-05 KR KR1020207013099A patent/KR102451862B1/ko active IP Right Grant
-
2020
- 2020-05-04 ZA ZA2020/02308A patent/ZA202002308B/en unknown
-
2022
- 2022-08-05 JP JP2022125310A patent/JP2022160585A/ja active Pending
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101928875A (zh) * | 2009-06-22 | 2010-12-29 | 鞍钢股份有限公司 | 具有良好成形性能的高强度冷轧钢板及其制备方法 |
JP2013072101A (ja) * | 2011-09-27 | 2013-04-22 | Jfe Steel Corp | 高強度鋼板およびその製造方法 |
CN103842541A (zh) * | 2011-09-30 | 2014-06-04 | 新日铁住金株式会社 | 烘烤硬化性优良的高强度热浸镀锌钢板、高强度合金化热浸镀锌钢板以及它们的制造方法 |
CN105492643A (zh) * | 2013-08-09 | 2016-04-13 | 杰富意钢铁株式会社 | 高强度冷轧钢板及其制造方法 |
CN105940134A (zh) * | 2014-01-29 | 2016-09-14 | 杰富意钢铁株式会社 | 高强度冷轧钢板及其制造方法 |
CN106661653A (zh) * | 2014-07-03 | 2017-05-10 | 安赛乐米塔尔公司 | 用于制造高强度钢板的方法和获得的板 |
CN104532129A (zh) * | 2015-01-06 | 2015-04-22 | 东北大学 | 汽车用免镀锌高强度和塑性冷轧不锈钢板及其制造方法 |
WO2017138503A1 (ja) * | 2016-02-10 | 2017-08-17 | Jfeスチール株式会社 | 高強度鋼板およびその製造方法 |
WO2017138504A1 (ja) * | 2016-02-10 | 2017-08-17 | Jfeスチール株式会社 | 高強度鋼板及びその製造方法 |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114381655A (zh) * | 2020-10-21 | 2022-04-22 | 宝山钢铁股份有限公司 | 一种高强塑积冷轧qp钢及其退火工艺和制造方法 |
WO2022206911A1 (zh) * | 2021-04-02 | 2022-10-06 | 宝山钢铁股份有限公司 | 抗拉强度≥1180MPa的低碳低合金Q&P钢或热镀锌Q&P钢及其制造方法 |
CN115181898A (zh) * | 2021-04-02 | 2022-10-14 | 宝山钢铁股份有限公司 | 一种1280MPa级别低碳低合金Q&P钢及其快速热处理制造方法 |
CN115181898B (zh) * | 2021-04-02 | 2023-10-13 | 宝山钢铁股份有限公司 | 一种1280MPa级别低碳低合金Q&P钢及其快速热处理制造方法 |
CN113403549A (zh) * | 2021-05-21 | 2021-09-17 | 鞍钢股份有限公司 | 1.2GPa级耐疲劳高成形性超高强汽车钢及制备方法 |
CN115852262A (zh) * | 2021-09-23 | 2023-03-28 | 宝山钢铁股份有限公司 | 一种锯片钢及其制造方法 |
CN115584428A (zh) * | 2022-11-07 | 2023-01-10 | 鞍钢股份有限公司 | 一种新型短流程低成本冷轧dh590钢及其生产方法 |
CN115584428B (zh) * | 2022-11-07 | 2023-08-18 | 鞍钢股份有限公司 | 一种短流程低成本冷轧dh590钢及其生产方法 |
CN116377320A (zh) * | 2023-03-23 | 2023-07-04 | 鞍钢股份有限公司 | 一种高强塑积的冷轧汽车用超高强钢及其制造方法 |
Also Published As
Publication number | Publication date |
---|---|
CA3080680A1 (en) | 2019-05-16 |
MA50556A (fr) | 2020-09-16 |
KR102451862B1 (ko) | 2022-10-07 |
US11920207B2 (en) | 2024-03-05 |
BR112020007515A2 (pt) | 2020-10-06 |
JP2022160585A (ja) | 2022-10-19 |
RU2020117334A3 (zh) | 2021-11-26 |
WO2019092578A1 (en) | 2019-05-16 |
UA127381C2 (uk) | 2023-08-02 |
RU2020117334A (ru) | 2021-11-26 |
US20210002740A1 (en) | 2021-01-07 |
ZA202002308B (en) | 2021-03-31 |
KR20200064122A (ko) | 2020-06-05 |
EP3707288A1 (en) | 2020-09-16 |
CA3080680C (en) | 2022-07-26 |
JP2021502488A (ja) | 2021-01-28 |
MX2020004769A (es) | 2020-08-13 |
WO2019092481A1 (en) | 2019-05-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR102451862B1 (ko) | 냉간 압연된 강판 및 이의 제조 방법 | |
CN111315902B (zh) | 冷轧热处理钢板及其制造方法 | |
CN113748219B (zh) | 经冷轧的马氏体钢及其马氏体钢的方法 | |
US11365468B2 (en) | Cold rolled and heat treated steel sheet and a method of manufacturing thereof | |
KR102471559B1 (ko) | 냉간 압연 및 코팅된 강판 및 그 제조 방법 | |
KR20220005572A (ko) | 냉간압연된 마르텐사이트계 강 시트 및 그 제조 방법 | |
CN112689684B (zh) | 经冷轧和涂覆的钢板及其制造方法 | |
CN113840930A (zh) | 经冷轧和涂覆的钢板及其制造方法 | |
WO2020245678A1 (en) | Cold rolled and coated steel sheet and a method of manufacturing thereof | |
KR20230016218A (ko) | 열처리 냉연 강판 및 그 제조 방법 | |
RU2784454C2 (ru) | Холоднокатаная термообработанная листовая сталь и способ ее изготовления |
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 |