CN115433858B - Al-Mg系铝合金板材、其制备方法和应用 - Google Patents
Al-Mg系铝合金板材、其制备方法和应用 Download PDFInfo
- Publication number
- CN115433858B CN115433858B CN202211395649.9A CN202211395649A CN115433858B CN 115433858 B CN115433858 B CN 115433858B CN 202211395649 A CN202211395649 A CN 202211395649A CN 115433858 B CN115433858 B CN 115433858B
- Authority
- CN
- China
- Prior art keywords
- aluminum alloy
- content
- phosphating
- annealing
- less
- 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
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 74
- 229910018134 Al-Mg Inorganic materials 0.000 title claims abstract description 30
- 229910018467 Al—Mg Inorganic materials 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 238000011282 treatment Methods 0.000 claims abstract description 53
- 238000000137 annealing Methods 0.000 claims abstract description 50
- 238000005097 cold rolling Methods 0.000 claims abstract description 34
- 239000000956 alloy Substances 0.000 claims abstract description 29
- 238000000265 homogenisation Methods 0.000 claims abstract description 29
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 25
- 238000005098 hot rolling Methods 0.000 claims abstract description 17
- 238000005266 casting Methods 0.000 claims abstract description 12
- 239000012535 impurity Substances 0.000 claims abstract description 12
- 238000003723 Smelting Methods 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 39
- 238000005406 washing Methods 0.000 claims description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 238000010438 heat treatment Methods 0.000 claims description 23
- 238000001816 cooling Methods 0.000 claims description 17
- 238000004321 preservation Methods 0.000 claims description 13
- 239000000654 additive Substances 0.000 claims description 12
- 230000000996 additive effect Effects 0.000 claims description 12
- 239000011259 mixed solution Substances 0.000 claims description 11
- 238000005238 degreasing Methods 0.000 claims description 9
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 230000003750 conditioning effect Effects 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 6
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 4
- 229920000388 Polyphosphate Polymers 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 239000013527 degreasing agent Substances 0.000 claims description 4
- 238000005237 degreasing agent Methods 0.000 claims description 4
- 229940104869 fluorosilicate Drugs 0.000 claims description 4
- 229910052748 manganese Inorganic materials 0.000 claims description 4
- 239000011572 manganese Substances 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 239000001205 polyphosphate Substances 0.000 claims description 4
- 235000011176 polyphosphates Nutrition 0.000 claims description 4
- 239000004094 surface-active agent Substances 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 238000005253 cladding Methods 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 abstract description 21
- 230000007797 corrosion Effects 0.000 abstract description 21
- 230000000694 effects Effects 0.000 abstract description 11
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 description 22
- 230000000052 comparative effect Effects 0.000 description 12
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 10
- 238000012360 testing method Methods 0.000 description 9
- 238000009835 boiling Methods 0.000 description 8
- 238000009749 continuous casting Methods 0.000 description 7
- 238000005520 cutting process Methods 0.000 description 7
- 238000007599 discharging Methods 0.000 description 7
- 239000000155 melt Substances 0.000 description 7
- 238000003801 milling Methods 0.000 description 7
- 238000010791 quenching Methods 0.000 description 7
- 230000000171 quenching effect Effects 0.000 description 7
- 238000007670 refining Methods 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000013078 crystal Substances 0.000 description 6
- 238000011156 evaluation Methods 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 238000011534 incubation Methods 0.000 description 5
- 229910019142 PO4 Inorganic materials 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 4
- 239000010452 phosphate Substances 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 230000010287 polarization Effects 0.000 description 3
- 238000002791 soaking Methods 0.000 description 3
- 239000008399 tap water Substances 0.000 description 3
- 235000020679 tap water Nutrition 0.000 description 3
- 239000011573 trace mineral Substances 0.000 description 3
- 235000013619 trace mineral Nutrition 0.000 description 3
- 229910000861 Mg alloy Inorganic materials 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- 229910000676 Si alloy Inorganic materials 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003472 neutralizing effect Effects 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000005482 strain hardening Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 206010070834 Sensitisation Diseases 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- ZOMNIUBKTOKEHS-UHFFFAOYSA-L dimercury dichloride Chemical class Cl[Hg][Hg]Cl ZOMNIUBKTOKEHS-UHFFFAOYSA-L 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001962 electrophoresis Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000026731 phosphorylation Effects 0.000 description 1
- 238000006366 phosphorylation reaction Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000008313 sensitization Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000012085 test solution Substances 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
- 230000004580 weight loss Effects 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
- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D63/00—Motor vehicles or trailers not otherwise provided for
- B62D63/02—Motor vehicles
- B62D63/04—Component parts or accessories
-
- 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
- C21D8/0268—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
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/047—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/07—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing phosphates
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/34—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
- C23C22/36—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides containing also phosphates
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/73—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/78—Pretreatment of the material to be coated
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Metal Rolling (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
本发明提供一种Al‑Mg系铝合金板材、其制备方法和应用。该制备方法包括:步骤S1,将合金原料依次进行熔炼和铸造,得到铝合金铸锭;合金原料包括按质量百分比计的如下组分:Si含量≤0.4%;Fe含量≤0.4%;Mn含量0.2%~0.5%;Mg含量2.2%~6.0%;Cr含量≤0.3%;Cu含量0.05~0.5%,余量为Al及杂质,且杂质总量低于0.15wt%,每种杂质低于0.05wt%;步骤S2,将铝合金铸锭进行两级均匀化处理,得到均匀化铝合金铸锭;步骤S3,将均匀化铝合金铸锭依次进行热轧、一次冷轧、中间退火、最终冷轧和成品退火,得到铝合金板材。该制备方法提高了材料的磷化反应活性和抗晶间腐蚀性。
Description
技术领域
本发明涉及铝合金材料加工领域,具体而言,涉及一种Al-Mg系铝合金板材、其制备方法和应用。
背景技术
汽车行业的发展给能源和环境带来了巨大压力。在保证汽车强度和安全性能的前提下,尽可能地降低汽车整体质量,可以有效减少燃料消耗,降低尾气污染。铝合金以其较高的强度、刚度、良好的加工成形性以及较高的再回收率,成为汽车轻量化最理想的材料。
Al-Mg铝合金是重要的车身结构件和覆盖件内板材料,既要求具有良好的力学性能,也要求具有良好的耐晶间腐蚀性能和磷化性能。磷化是铝合金材料在电泳、喷漆涂装之前的重要前处理工序,通过磷化处理可以使铝合金表面形成致密的磷化膜,一方面,增加了与漆膜的接触面积,提升了漆膜结合能力;另一方面,提升了基体铝材的耐腐蚀性能。
近年来围绕着铝合金汽车板材的磷化处理工艺进行了大量研究。CN 107245708A与CN105543833A均提出了一种铝合金材料表面磷化处理工艺或方法,但均是从磷化工艺的角度出发,未结合铝合金板材的制备工艺。CN 113322455A提供了一种用于铝硅合金表面黑色磷化的磷化试剂和磷化方法,提出了一种不含重金属离子的铝磷化液,并优化了相应的磷化工艺,免去了表面调整,并获得外观为黑色的磷化效果,但该发明仅适用于铝硅合金。CN 108103367A是提出了一种汽车车身用铝合金板材及制备方法,也具有一定的磷化性能,但是其主要针对的是6×××铝合金板材。
上述方案主要着眼于磷化处理工艺,对铝合金板材的抗腐蚀能力有一定帮助,但是仍有很大的改善空间,以满足汽车板材的安全性和稳定性需求。
发明内容
本发明的主要目的在于提供一种Al-Mg系铝合金板材、其制备方法和应用,以解决现有技术中汽车用铝合金板材磷化性能和抗晶间腐蚀性能不足的问题。
为了实现上述目的,根据本发明的一个方面,提供了一种Al-Mg系铝合金板材的制备方法,该制备方法包括:步骤S1,将合金原料依次进行熔炼和铸造,得到铝合金铸锭;合金原料包括按质量百分比计的如下组分:Si含量≤0.4%;Fe含量≤0.4%;Mn含量0.2%~0.5%;Mg含量2.2%~6.0%;Cr含量≤0.3%;Cu含量0.05%~0.5%,余量为Al及杂质,且杂质总量低于0.15wt%,每种杂质元素含量低于0.05wt%;步骤S2,将铝合金铸锭进行两级均匀化处理,得到均匀化铝合金铸锭;步骤S3,将均匀化铝合金铸锭依次进行热轧、一次冷轧、中间退火、最终冷轧和成品退火,得到铝合金板材。
进一步地,两级均匀化处理包括第一级均匀化处理和第二级均匀化处理,第一级均匀化处理的温度为380~460℃,第二级均匀化处理的温度为490~530℃。
进一步地,第一级均匀化处理的保温时间为2~8h,第二级均匀化处理的保温时间为2~8h。
进一步地,步骤S3中热轧后得到的热轧板的厚度为5.0-8.0mm。
进一步地,步骤S3中一次冷轧得到的板材厚度为1.6~5.0mm。
进一步地,步骤S3中中间退火包括:以20~50℃/h的速度将板材升温至300~350℃后保温2h以上。
进一步地,步骤S3中最终冷轧后得到的板材厚度为0.8~3.0mm。
进一步地,步骤S3中成品退火包括:以大于20℃/s的升温速度将板材升温至450~530℃后保温15s~5min进行连续退火,以大于10℃/s的速度冷却。
进一步地,步骤S3还包括,成品退火后进行矫直,矫直量为0.5~1%。
进一步地,步骤S4,将铝合金板材进行磷化处理,磷化处理包括依次进行的脱脂、水洗、表调、磷化、最终水洗。
进一步地,脱脂包括,用质量百分比为3~5%的碱性脱脂剂和0.6~1%的表面活性剂的混合液,在45~55℃下处理1~10min;
和/或,水洗和最终水洗包括,用水清洗1~5min,清洗温度20~30℃;
和/或,表调包括,用质量百分比为0.1~0.2%的多聚磷酸钛表调剂,处理0.5~5min,处理温度20~35℃;
和/或,磷化包括,用质量百分比为4~5%的主成膜剂、2~3%的中和剂、0.1~0.2%的促进剂、0.1~0.5%的锰添加剂、0.1~0.5%的镍添加剂、0.5~1%的氟硅酸盐和0.1~0.5%的氟离子添加剂组成的混合液处理3~5min,处理温度为40~60℃,混合液的游离酸点1.5~2.0,总酸点25~30,氟离子浓度150~200ppm,促进剂气点2~4。
根据本发明的另一方面,提供了一种Al-Mg系铝合金板材,该Al-Mg系铝合金板材由上述任一种的制备方法制备得到。
根据本发明的又一方面,提供了一种上述的Al-Mg系铝合金板材在车身结构件和/或覆盖件内板的应用。
应用本发明的技术方案,通过优化Al-Mg系铝合金板材各组分尤其是微量元素Cu含量,以及均匀化退火工艺,提高了材料的磷化反应活性,促进表面磷化膜致密、均匀生长;同时提供了良好的抗晶间腐蚀性能,保证合金晶间腐蚀性能满足主机厂认证要求。
附图说明
构成本申请的一部分的说明书附图用来提供对本发明的进一步理解,本发明的示意性实施例及其说明用于解释本发明,并不构成对本发明的不当限定。在附图中:
图1为本发明实施例1和比较例1制备的Al-Mg系铝合金板材水煮试验后的宏观形貌;
图2为本发明实施例1和比较例1制备的Al-Mg系铝合金板材极化曲线测试结果;
图3为本发明实施例1和比较例1制备的Al-Mg系铝合金板材磷化膜SEM扫描照片;
图4为本发明实施例4和比较例3制备的Al-Mg系铝合金板材经过195℃-45min敏化后金相组织。
具体实施方式
需要说明的是,在不冲突的情况下,本申请中的实施例及实施例中的特征可以相互组合。下面将参考附图并结合实施例来详细说明本发明。
如背景技术所分析的,现有技术中存在汽车用铝合金板材磷化性能和抗晶间腐蚀性能不足的问题,为了解决该问题,本申请提供了一种Al-Mg系铝合金板材、其制备方法和应用。
根据本申请的一种典型的实施方式,提供了一种Al-Mg系铝合金板材的制备方法,该制备方法包括:步骤S1,将合金原料依次进行熔炼和铸造,得到铝合金铸锭;合金原料包括按质量百分比计的如下组分:Si含量≤0.4%;Fe含量≤0.4%;Mn含量0.2%~0.5%;Mg含量2.2%~6.0%;Cr含量≤0.3%;Cu含量0.05%~0.5%,余量为Al及杂质,且杂质总量低于0.15wt%,每种杂质元素含量低于0.05wt%;步骤S2,将铝合金铸锭进行两级均匀化处理,得到均匀化铝合金铸锭;步骤S3,将均匀化铝合金铸锭依次进行热轧、一次冷轧、中间退火、最终冷轧和成品退火,得到铝合金板材。
本申请提供的Al-Mg系铝合金板材制备方法,通过优化各组分尤其是微量元素Cu含量,以及均匀化退火工艺,提高了材料的磷化反应活性,促进表面磷化膜致密、均匀生长;同时提供了良好的抗晶间腐蚀性能,保证合金晶间腐蚀性能满足主机厂认证要求。
上述两级均匀化处理有利于改善铸造过程中形成的不均匀结晶组织,提高铝合金板材轧制后的性能,具体操作方式可以参考现有技术,本申请通过两级均匀化处理,对于制备的Al-Mg系铝合金板材的磷化性能改善较为明显。在本申请的一些典型的实施方式中,两级均匀化处理包括第一级均匀化处理和第二级均匀化处理,第一级均匀化处理的温度为380~460℃,第二级均匀化处理的温度为490~530℃,在该处理温度下,均匀化处理效果的提升尤为明显。优选的,第一级均匀化处理的保温时间为2~8h,第二级均匀化处理的保温时间为2~8h。
上述步骤S3中,将经均匀化处理的铝合金铸锭依次进行热轧、一次冷轧、中间退火、最终冷轧和成品退火,得到铝合金板材,本领域的技术人员可以容易的根据现有技术确定各步骤的实施方法和参数指标。以热轧为例,可以采用一个道次,也可以采用多个道次,优选的,热轧后得到的热轧板的厚度为5.0-8.0mm。热轧后进行一次冷轧,优选的,一次冷轧后得到的板材厚度为1.6~5.0mm。冷轧得到的板材经中间退火后进行最终冷轧,在一些实施例中,最终冷轧后得到的板材厚度为0.8~3.0mm。最终冷轧之后需要进行成品退火,提高铝合金板材的塑形和韧性。
在一些典型的实施例中,上述步骤S3中,中间退火包括:以20~50℃/h的速度将板材升温至300~350℃后保温2h以上,中间退火的温度较低,主要作用在于消除加工硬化,以便后续冷加工的顺利进行。成品退火包括:以大于20℃/s的升温速度将板材升温至450~530℃后保温15s~5min进行连续退火,以大于10℃/s的速度冷却,有利于形成适宜的织构,成品退火的温度较高,主要实现板材完全再结晶及调整晶粒组织和第二相回溶析出行为,进一步提高材料的磷化反应活性和抗晶间腐蚀性能。
在一些实施例中,步骤S3还包括,成品退火后进行矫直,矫直量为0.5~1%,便于后续的磷化处理和使用。
在一些实施例中,本申请的Al-Mg系铝合金板材的制备方法还包括磷化处理步骤,即步骤S4,将铝合金板材进行磷化处理,磷化处理包括依次进行的脱脂、水洗、表调、磷化、最终水洗,采用上述磷化方法可以使采用本申请的Al-Mg系合金板材的制备方法制备得到的铝合金板材表面的磷化膜覆盖更为完整,具有更高的覆盖度和更适宜的磷化结晶体尺寸,且结晶体分布均匀,无粗大现象。
上述磷化处理中的脱脂过程,优选用质量百分比为3~5%的碱性脱脂剂和0.6~1%的表面活性剂的混合液,在45~55℃下处理1~10min;水洗和最终水洗包括,用水清洗1~5min,清洗温度20~30℃;上述表调优选用质量百分比为0.1~0.2%的多聚磷酸钛表调剂,处理0.5~5min,处理温度20~35℃。
在一些优选的实施例中,用质量百分比为4~5%的主成膜剂、2~3%的中和剂、0.1~0.2%的促进剂、0.1~0.5%的锰添加剂、0.1~0.5%的镍添加剂、0.5~1%的氟硅酸盐和0.1~0.5%的氟离子添加剂组成的混合液对铝合金板材进行磷化处理,处理时间3~5min,处理温度为40~60℃,优选的,述混合液的游离酸点1.5~2.0,总酸点25~30,氟离子浓度150~200ppm,促进剂气点2~4。
根据本申请的另一种典型的实施方式,提供了一种Al-Mg系铝合金板材,该Al-Mg系铝合金板材由上述任一种的制备方法制备得到,该铝合金板材通过对材料成分和制备工艺的结合,具有优异的磷化性能和良好的抗晶间腐蚀能力。
根据本申请的又一种典型的实施方式,提供了一种上述Al-Mg系铝合金板材在车身结构件和/或覆盖件内板的应用,不仅发挥了铝合金板材高的度、刚度和良好的加工成形性,而且具有良好的耐晶间腐蚀性能和磷化性能。
下面将结合实施例和对比例进一步说明本申请可以实现的有益效果。
实施例1
Al-Mg合金按质量百分比计:Si:0.25%;Fe:0.4%;Mn:0.3%;Mg:4.5%;Cr:0.1%;Cu:0.14%,余量为Al。按如上合金成分配比进行熔炼,熔体经精炼处理后利用半连铸设备铸造出铸锭;将铸锭经切头、铣面后进行均匀化处理,均匀化工艺为450℃保温3h,之后530℃保温3h;之后热轧至5mm厚;将热轧板冷轧至4mm,进行中间退火,以30℃/h速度升温至350℃,保温2h,出炉空冷至室温;然后再进行后续冷轧,获得2mm厚度冷轧板,之后进行成品退火处理,在连退线上以30℃/s的升温速率,在530℃下保温30s后水淬,以20℃/s的速度冷却。最后在矫直机上矫直,矫直量为1%。
将制备得到的铝合金成品板材按照如下方法进行水煮实验:样品尺寸为100mm×40mm,先将表面用丙酮或酒精清洗油污,再用5% NaOH 溶液清洗1min,水洗后浸入30%HNO3溶液清洗30s,纯水洗净后室温干燥,再将试样在90℃水浴锅加热15min,取出后清洗烘干。水煮实验后的宏观形貌如图1所示的右侧图片,其中,图片左边较宽的部分为水煮的部分,从图片中可以看出水煮后明显变色。水煮实验能初步判断铝合金材料的表面活性,变色越明显,表面活性越高,磷化反应活性越高。
将制备得到的铝合金成品板材按照如下方法进行极化曲线测试:样品尺寸为20mm×40 mm,对试验面进行打磨、抛光后,进行清洗和干燥处理。试验采用三电极***,以铝合金试样为工作电极,铂片为辅助电极,饱和甘汞电极为参比电极,试验溶液为3.5% NaCl溶液,电位扫描速率为1 mV/s,扫描范围-1.6~0.4 V,测试结果如图2所示。
实施例2
Al-Mg合金按质量百分比计:Si:0.25%;Fe:0.4%;Mn:0.3%;Mg:4.5%;Cr:0.1%;Cu:0.14%,余量为Al。按如上合金成分配比进行熔炼,熔体经精炼处理后利用半连铸设备铸造出铸锭;将铸锭经切头、铣面后进行均匀化处理,均匀化工艺为430℃保温5h,之后520℃保温5h;之后热轧轧至6mm厚;将热轧板冷轧至4mm,进行中间退火,以30℃/h速度升温至330℃,保温4h,出炉空冷至室温;然后再进行后续冷轧,获得1.5mm厚度冷轧板,之后进行成品退火处理,在连退线上以30℃/s的升温速率,在500℃下保温2min后水淬,以20℃/s的速度冷却。最后在矫直机上矫直,矫直量为1%。
实施例3
Al-Mg合金按质量百分比计:Si:0.25%;Fe:0.4%;Mn:0.45%;Mg:2.7%;Cr:0.25%;Cu:0.43%,余量为Al。按如上合金成分配比进行熔炼,熔体经精炼处理后利用半连铸设备铸造出铸锭;将铸锭经切头、铣面后进行均匀化处理,均匀化工艺为400℃保温8h,之后490℃保温8h;之后热轧至5mm厚;将热轧板冷轧至4mm,进行中间退火,以20℃/h速度升温至300℃,保温6h,出炉空冷至室温;然后再进行后续冷轧,获得0.8mm厚度冷轧板,之后进行成品退火处理,在连退线上以30℃/s的升温速率,在450℃下保温2min后水淬,以20℃/s的速度冷却。最后在矫直机上矫直,矫直量为1%。
实施例4
Al-Mg合金按质量百分比计:Si:0.25%;Fe:0.4%;Mn:0.45%;Mg:2.7%;Cr:0.25%;Cu:0.43%,余量为Al。按如上合金成分配比进行熔炼,熔体经精炼处理后利用半连铸设备铸造出铸锭;将铸锭经切头、铣面后进行均匀化处理,均匀化工艺为440℃保温5h,之后510℃保温5h;之后热轧至6mm厚;将热轧板冷轧至4mm,进行中间退火,以30℃/h速度升温至330℃,保温4h,出炉空冷至室温;然后再进行后续冷轧,获得2.5mm厚度冷轧板,之后进行成品退火处理,在连退线上以30℃/s的升温速率,在500℃下保温2min后水淬,以20℃/s的速度冷却。最后在矫直机上矫直,矫直量为1%。
对制备得到的铝合金成品板材进行金相组织检测,检测方法为:沿板材厚度方向制备金相试样,经打磨、抛光后,采用keller试剂腐蚀20~50s后在金相显微镜下观察。检测结果如图3右侧所示。
实施例5
与实施例2的不同之处在于,Al-Mg合金按质量百分比计:Si:0.25%;Fe:0.4%;Mn:0.3%;Mg:4.5%;Cr:0.1%;Cu:0.06%,余量为Al。
实施例6
与实施例3的不同之处在于,Al-Mg合金按质量百分比计:Si:0.25%;Fe:0.4%;Mn:0.45%;Mg:2.7%;Cr:0.25%;Cu:0.5%,余量为Al。
实施例7
与实施例1的不同之处在于,均匀化处理工艺为350℃保温3h,之后430℃保温3h。
实施例8
与实施例1的不同之处在于,均匀化处理工艺为500℃保温3h,之后550℃保温3h。
实施例9
与实施例1的不同之处在于,均匀化工艺为450℃保温2h,之后530℃保温2h。
比较例1
Al-Mg合金按质量百分比计:Si:0.25%;Fe:0.4%;Mn:0.3%;Mg:4.5%;Cr:0.1%;Cu:0.02%,余量为Al。按如上合金成分配比进行熔炼,熔体经精炼处理后利用半连铸设备铸造出铸锭;将铸锭经切头、铣面后进行均匀化处理,均匀化工艺为450℃保温3h,之后530℃保温3h;之后热轧至5mm厚;将热轧板冷轧至4mm,进行中间退火,以30℃/h速度升温至350℃,保温2h,出炉空冷至室温;然后再进行后续冷轧,获得2mm厚度冷轧板,之后进行成品退火处理,在连退线上以30℃/s的升温速率,在530℃下保温30s后水淬,以20℃/s的速度冷却。最后在矫直机上矫直,矫直量为1%。
与实施例1采用相同的方法进行水煮实验,实验后的宏观形貌如图1的左侧图片,图片左边为水煮的部分。并且,按照实施例1相同的方法进行了极化曲线测试,测试结果如图2所示。
比较例2
Al-Mg合金按质量百分比计:Si:0.25%;Fe:0.4%;Mn:0.3%;Mg:4.5%;Cr:0.1%;Cu:0.75%,余量为Al。按如上合金成分配比进行熔炼,熔体经精炼处理后利用半连铸设备铸造出铸锭;将铸锭经切头、铣面后进行均匀化处理,均匀化工艺为450℃保温3h,之后530℃保温3h;之后热轧至5mm厚;将热轧板冷轧至4mm,进行中间退火,以30℃/h速度升温至350℃,保温2h,出炉空冷至室温;然后再进行后续冷轧,获得2mm厚度冷轧板,之后进行成品退火处理,在连退线上以30℃/s的升温速率,在530℃下保温30s后水淬,以20℃/s的速度冷却。最后在矫直机上矫直,矫直量为1%。
比较例3
Al-Mg合金按质量百分比计:Si:0.25%;Fe:0.4%;Mn:0.3%;Mg:4.5%;Cr:0.1%;Cu:0.43%,余量为Al。按如上合金成分配比进行熔炼,熔体经精炼处理后利用半连铸设备铸造出铸锭;将铸锭经切头、铣面后进行均匀化处理,均匀化工艺为530℃,保温8h;之后热轧至5mm厚;将热轧板冷轧至4mm,进行中间退火,以20℃/h速度升温至300℃,保温6h,出炉空冷至室温;然后再进行后续冷轧,获得0.8mm厚度冷轧板,之后进行成品退火处理,在连退线上以30℃/s的升温速率,在450℃下保温2min后水淬,以20℃/s的速度冷却。最后在矫直机上矫直,矫直量为1%。
比较例4
与比较例3的不同之处在于,均匀化工艺的温度为430℃,保温8h。
将如上工艺制备的板材进行磷化性能和晶间腐蚀性能评价,具体方法如下:
一、磷化性能评价:
磷化工艺由5个工序组成,包括脱脂水洗、表调、磷化、水洗。
脱脂:用质量百分比为5%的碱性脱脂剂和1%的表面活性剂的混合液,处理5min,脱脂温度50℃。
水洗:用自来水清洗3min,清洗温度25℃。
表调:用质量百分比为0.2%的多聚磷酸钛表调剂,处理3min,表调温度30℃。
磷化:用质量百分比为5%的主成膜剂、2.5%的中和剂、0.2%的促进剂、0.3%的锰添加剂、0.3%的镍添加剂、0.75%的氟硅酸盐和0.3%的氟离子添加剂组成的混合液,游离酸点1.8,总酸点30,氟离子浓度180ppm,促进剂气点3,磷化温度50℃,处理5min。
水洗:用自来水清洗3min。清洗温度25℃。
对磷化后的表面进行SEM检测,对选定区域进行磷化膜覆盖度统计测量,并测量磷化结晶体尺寸。
评价标准:磷化膜覆盖度≥95%,磷化膜结晶体尺寸为2~8μm为合格。
上述实施例1和比较例1制备的Al-Mg系铝合金板材按上述步骤磷化后,进行SEM扫描,扫描照片如图3所示。
二、晶间腐蚀性能评价:
试样处理:1、试样尺寸:50mm×30mm×厚度,表面用2000#砂纸打磨光滑;2、试验前将试样依次进行如下处理:丙酮清洗;5% NaOH 溶液、80℃清洗1min;水洗;70%HNO3溶液清洗30s;去离子水清洗;丙酮清洗;室温干燥;称量腐蚀前的重量m0(±0.1mg)。3、将试样在(30.0±0.2)℃、70% HNO3溶液中浸泡24h±15min,烧杯容量150mL,薄膜封口(容量/面积比>3mL/cm2),每个烧杯放置一个试样。4、试样取出后依次进行如下处理:自来水清洗(或浸泡30min),冲洗过程用中硬度牙刷去除残留物;蒸馏水清洗;丙酮清洗+10min丙酮超声清洗;室温干燥;称重(±0.1mg)并记录腐蚀后的重量m1。
评价标准:根据腐蚀失重评估晶间腐蚀,原始状态板材质量损失<3mg/cm2为合格;195℃-45min 敏化处理板材质量损失<30mg/cm2为合格。其中,实施例4和比较例3制备的Al-Mg系铝合金板材经过195℃-45min敏化处理后的金相组织如图4所示。
表1 铝合金板材性能测试结果
从以上的描述中,可以看出,本申请提供的Al-Mg系铝合金板材制备方法,通过优化各组分尤其是微量元素Cu含量,以及均匀化退火工艺,提高了材料的磷化反应活性,促进表面磷化膜致密、均匀生长;同时提供了良好的抗晶间腐蚀性能,保证合金晶间腐蚀性能满足主机厂认证要求。
以上所述仅为本发明的优选实施例而已,并不用于限制本发明,对于本领域的技术人员来说,本发明可以有各种更改和变化。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (7)
1.一种Al-Mg系铝合金板材的制备方法,其特征在于,所述制备方法包括:
步骤S1,将合金原料依次进行熔炼和铸造,得到铝合金铸锭;所述合金原料包括按质量百分比计的如下组分:Si含量≤0.4%;Fe含量≤0.4%;Mn含量0.2%~0.5%;Mg含量2.2%~6.0%;Cr含量≤0.3%;Cu含量0.43%~0.5%,余量为Al及杂质,且杂质总量低于0.15wt%,每种杂质元素含量低于0.05wt%;
步骤S2,将所述铝合金铸锭进行两级均匀化处理,得到均匀化铝合金铸锭;所述两级均匀化处理包括第一级均匀化处理和第二级均匀化处理,所述第一级均匀化处理的温度为380~460℃,所述第二级均匀化处理的温度为490~530℃,所述第一级均匀化处理的保温时间为2~8h,所述第二级均匀化处理的保温时间为2~8h;
步骤S3,将所述均匀化铝合金铸锭依次进行热轧、一次冷轧、中间退火、最终冷轧和成品退火,得到铝合金板材;
步骤S4,将所述铝合金板材进行磷化处理,所述磷化处理包括依次进行的脱脂、水洗、表调、磷化、最终水洗。
2.根据权利要求1所述的制备方法,其特征在于,所述步骤S3中所述热轧后得到的热轧板的厚度为5.0-8.0mm;
和/或,所述步骤S3中所述一次冷轧得到的板材厚度为1.6~5.0mm;
和/或,所述步骤S3中最终冷轧后得到的板材厚度为0.8~3.0mm。
3.根据权利要求1所述的制备方法,其特征在于,所述步骤S3中,所述中间退火包括:以20~50℃/h的速度将板材升温至300~350℃后保温2h以上;
和/或,所述成品退火包括:以大于20℃/s的升温速度将板材升温至450~530℃后保温15s~5min进行连续退火,以大于10℃/s的速度冷却。
4.根据权利要求1所述的制备方法,其特征在于,所述步骤S3还包括,所述成品退火后进行矫直,矫直量为0.5~1%。
5.根据权利要求1所述的制备方法,其特征在于,所述脱脂包括,用质量百分比为3~5%的碱性脱脂剂和0.6~1%的表面活性剂的混合液,在45~55℃下处理1~10min;
和/或,所述水洗和最终水洗包括,用水清洗1~5min,清洗温度20~30℃;
和/或,所述表调包括,用质量百分比为0.1~0.2%的多聚磷酸钛表调剂,处理0.5~5min,处理温度20~35℃;
和/或,所述磷化包括,用质量百分比为4~5%的主成膜剂、2~3%的中和剂、0.1~0.2%的促进剂、0.1~0.5%的锰添加剂、0.1~0.5%的镍添加剂、0.5~1%的氟硅酸盐和0.1~0.5%的氟离子添加剂组成的混合液处理3~5min,处理温度为40~60℃,所述混合液的游离酸点1.5~2.0,总酸点25~30,氟离子浓度150~200ppm,促进剂气点2~4。
6.一种Al-Mg系铝合金板材,其特征在于,所述Al-Mg系铝合金板材由权利要求1至5任一项所述的制备方法制备得到。
7.一种权利要求6所述的Al-Mg系铝合金板材在车身结构件和/或覆盖件内板的应用。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202211395649.9A CN115433858B (zh) | 2022-11-09 | 2022-11-09 | Al-Mg系铝合金板材、其制备方法和应用 |
US18/374,009 US20240150871A1 (en) | 2022-11-09 | 2023-09-28 | Al-Mg series aluminum alloy sheet, a preparation method and use thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202211395649.9A CN115433858B (zh) | 2022-11-09 | 2022-11-09 | Al-Mg系铝合金板材、其制备方法和应用 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN115433858A CN115433858A (zh) | 2022-12-06 |
CN115433858B true CN115433858B (zh) | 2023-04-28 |
Family
ID=84252810
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202211395649.9A Active CN115433858B (zh) | 2022-11-09 | 2022-11-09 | Al-Mg系铝合金板材、其制备方法和应用 |
Country Status (2)
Country | Link |
---|---|
US (1) | US20240150871A1 (zh) |
CN (1) | CN115433858B (zh) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007031819A (ja) * | 2005-07-29 | 2007-02-08 | Nippon Light Metal Co Ltd | アルミニウム合金板の製造方法 |
JP4939093B2 (ja) * | 2006-03-28 | 2012-05-23 | 株式会社神戸製鋼所 | ヘム曲げ性およびベークハード性に優れる自動車パネル用6000系アルミニウム合金板の製造方法 |
CN110643864A (zh) * | 2019-08-14 | 2020-01-03 | 中铝材料应用研究院有限公司 | 一种车身用合金板材及其制备方法 |
CN111893467B (zh) * | 2020-07-30 | 2022-12-13 | 中铝材料应用研究院有限公司 | 一种改进的铝合金磷化工艺 |
CN114540649A (zh) * | 2022-02-24 | 2022-05-27 | 中铝材料应用研究院有限公司 | 高成形耐烘烤5xxx系铝合金板材及其制备方法 |
-
2022
- 2022-11-09 CN CN202211395649.9A patent/CN115433858B/zh active Active
-
2023
- 2023-09-28 US US18/374,009 patent/US20240150871A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
US20240150871A1 (en) | 2024-05-09 |
CN115433858A (zh) | 2022-12-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN1123562A (zh) | 耐腐蚀性极好的不锈钢板的生产方法 | |
WO2017169011A1 (ja) | Ti含有フェライト系ステンレス鋼板および製造方法並びにフランジ | |
JP5148930B2 (ja) | プレス成形用Al−Mg−Si系アルミニウム合金板の製造方法、及びプレス成形用Al−Mg−Si系アルミニウム合金板 | |
CN115433858B (zh) | Al-Mg系铝合金板材、其制备方法和应用 | |
WO2019021695A1 (ja) | 高強度冷延鋼板及びその製造方法 | |
JPH036348A (ja) | 化成処理性に優れた自動車パネル用アルミニウム合金及びその製造方法 | |
JP2007131889A (ja) | Al−Mg−Si系アルミニウム合金板 | |
CN104988406A (zh) | 一种355l汽车大梁用黑皮钢及其生产方法 | |
JP4633994B2 (ja) | 曲げ加工性および塗装焼付硬化性に優れたアルミニウム合金板および製造方法 | |
CN111690854B (zh) | 一种高强高韧耐腐蚀铝合金材料的加工工艺 | |
JP5400510B2 (ja) | 深絞り性と曲げ加工性に優れた成形加工用アルミニウム合金板 | |
JP3781097B2 (ja) | 自動車用アルミニウム合金板及びその製造方法 | |
JP6585436B2 (ja) | 耐糸錆性、塗装焼付け硬化性及び加工性に優れた自動車ボディパネル用アルミニウム合金板及びその製造方法、ならびに、これを用いた自動車ボディパネル及びその製造方法 | |
JP2702371B2 (ja) | 防眩性と耐食性を兼ね備えた外装用ステンレス鋼板の製造方法 | |
US20200157668A1 (en) | Aluminum alloy plate and method for producing the same | |
JP2997592B2 (ja) | 防眩性と耐食性を兼ね備えた外装用ステンレス鋼板の製造方法 | |
JP4325522B2 (ja) | 加工性および加工部の特性が優れるステンレス鋼板とその製造方法 | |
JPH0570969A (ja) | 耐糸錆性に優れた自動車外板用Al合金塗装板 | |
JPH0774384B2 (ja) | 耐食性、加工成形性のすぐれたステンレス鋼板の製造法 | |
JP3059376B2 (ja) | 光沢性および耐食性に優れるオーステナイト系ステンレス鋼板およびその製造方法 | |
JP2849251B2 (ja) | 防眩性と耐食性を兼ね備えた外装用ステンレス鋼板の製造方法 | |
JP2588336B2 (ja) | 防眩性と耐食性を兼ね備えた外装用ステンレス鋼板の製造方法 | |
CN117363936A (zh) | 铝合金板材及其制备方法 | |
JP2008106318A (ja) | ステンレス鋼材の酸洗方法及び製造方法 | |
JPH04147936A (ja) | 絞り加工用高強度アルミニウム合金板及びその製造方法 |
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 |