CN116855798B - High-strength aluminum alloy and preparation method and application thereof - Google Patents
High-strength aluminum alloy and preparation method and application thereof Download PDFInfo
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- CN116855798B CN116855798B CN202310908461.8A CN202310908461A CN116855798B CN 116855798 B CN116855798 B CN 116855798B CN 202310908461 A CN202310908461 A CN 202310908461A CN 116855798 B CN116855798 B CN 116855798B
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 92
- 238000002360 preparation method Methods 0.000 title claims abstract description 33
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 47
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 47
- 229910052802 copper Inorganic materials 0.000 claims abstract description 30
- 239000010949 copper Substances 0.000 claims abstract description 30
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 28
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229910052684 Cerium Inorganic materials 0.000 claims abstract description 22
- 239000006185 dispersion Substances 0.000 claims abstract description 22
- 238000003723 Smelting Methods 0.000 claims abstract description 21
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 15
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 8
- 229910052715 tantalum Inorganic materials 0.000 claims abstract description 8
- 238000005266 casting Methods 0.000 claims abstract description 4
- VYFYYTLLBUKUHU-UHFFFAOYSA-N dopamine Chemical compound NCCC1=CC=C(O)C(O)=C1 VYFYYTLLBUKUHU-UHFFFAOYSA-N 0.000 claims description 44
- 239000007788 liquid Substances 0.000 claims description 39
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 26
- 229960003638 dopamine Drugs 0.000 claims description 22
- NGCRLFIYVFOUMZ-UHFFFAOYSA-N 2,3-dichloroquinoxaline-6-carbonyl chloride Chemical compound N1=C(Cl)C(Cl)=NC2=CC(C(=O)Cl)=CC=C21 NGCRLFIYVFOUMZ-UHFFFAOYSA-N 0.000 claims description 18
- QKNYBSVHEMOAJP-UHFFFAOYSA-N 2-amino-2-(hydroxymethyl)propane-1,3-diol;hydron;chloride Chemical compound Cl.OCC(N)(CO)CO QKNYBSVHEMOAJP-UHFFFAOYSA-N 0.000 claims description 16
- 239000012298 atmosphere Substances 0.000 claims description 16
- CRCKGIUJMFFISH-UHFFFAOYSA-N copper;ethanolate Chemical compound [Cu+2].CC[O-].CC[O-] CRCKGIUJMFFISH-UHFFFAOYSA-N 0.000 claims description 16
- 239000000243 solution Substances 0.000 claims description 16
- 239000007790 solid phase Substances 0.000 claims description 14
- 238000001354 calcination Methods 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 6
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000000956 alloy Substances 0.000 abstract description 51
- 229910045601 alloy Inorganic materials 0.000 abstract description 43
- 239000000203 mixture Substances 0.000 abstract description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 5
- 125000000524 functional group Chemical group 0.000 abstract description 5
- 239000001301 oxygen Substances 0.000 abstract description 5
- 229910052760 oxygen Inorganic materials 0.000 abstract description 5
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 abstract description 4
- 230000000052 comparative effect Effects 0.000 description 21
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 14
- 239000012300 argon atmosphere Substances 0.000 description 11
- 239000000463 material Substances 0.000 description 11
- 238000003756 stirring Methods 0.000 description 11
- -1 manganese aluminum Chemical compound 0.000 description 10
- 229910000611 Zinc aluminium Inorganic materials 0.000 description 7
- KCZFLPPCFOHPNI-UHFFFAOYSA-N alumane;iron Chemical compound [AlH3].[Fe] KCZFLPPCFOHPNI-UHFFFAOYSA-N 0.000 description 7
- HXFVOUUOTHJFPX-UHFFFAOYSA-N alumane;zinc Chemical compound [AlH3].[Zn] HXFVOUUOTHJFPX-UHFFFAOYSA-N 0.000 description 7
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 7
- 229910052786 argon Inorganic materials 0.000 description 7
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 7
- 239000011572 manganese Substances 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000001816 cooling Methods 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910018131 Al-Mn Inorganic materials 0.000 description 1
- 229910018461 Al—Mn Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910017818 Cu—Mg Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910019086 Mg-Cu Inorganic materials 0.000 description 1
- 229910016583 MnAl Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- VQYPKWOGIPDGPN-UHFFFAOYSA-N [C].[Ta] Chemical compound [C].[Ta] VQYPKWOGIPDGPN-UHFFFAOYSA-N 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000001192 hot extrusion Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000006104 solid solution Substances 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
- C22C21/00—Alloys based on aluminium
-
- 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
- C22C1/10—Alloys containing non-metals
- C22C1/1036—Alloys containing non-metals starting from a melt
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
The invention discloses a high-strength aluminum alloy, a preparation method and application thereof, and relates to the technical field of alloys, wherein the preparation method comprises the following steps: s1, smelting a raw material containing Al, si, fe, mn, zn and Ce for the first time to prepare a first mixture; s2, adding the tantalum-nitrogen-containing graphene-copper aluminum alloy into the first mixture, and smelting again to obtain a second mixture; s3, post-treating the covering agent and the second mixture to prepare a third mixture; s4, casting the third mixture. The invention utilizes the abundant oxygen-containing functional groups on the surface of the graphene oxide, thereby realizing the full dispersion of tantalum element, copper element and aluminum powder; thereby preparing a master alloy with smaller granularity; the dispersion degree of the elements in the finally prepared aluminum alloy material is further improved, so that the overall strength of the aluminum alloy material is improved.
Description
Technical Field
The invention belongs to the technical field of alloys, and particularly relates to a high-strength aluminum alloy and a preparation method and application thereof.
Background
Hubs are critical components that carry the full weight of an automobile and rotate at high speeds, so there are stringent requirements on the properties of the hub material. Aluminum alloy materials are widely used for manufacturing hubs due to the advantages of light weight, excellent mechanical properties and the like.
The aluminum alloy is made by adding some alloy elements into pure aluminum, such as Al-Mn alloy developed by adding manganese element into pure aluminum, al-Cu alloy developed by adding copper element into pure aluminum, al-Cu-Mg series hard aluminum alloy developed by adding copper and magnesium element into pure aluminum simultaneously, al-Zn-Mg-Cu series super hard aluminum alloy developed by adding zinc, magnesium and copper element into pure aluminum simultaneously, etc.
When the aluminum alloy is used for the vehicle body parts, the existing extrusion molding parts or plates have insufficient strength and poor extensibility.
Disclosure of Invention
The present invention is directed to a method for preparing a high strength aluminum alloy, which solves at least one of the problems and disadvantages set forth in the background art.
The invention also provides the high-strength aluminum alloy prepared by the preparation method.
The invention also provides application of the high-strength aluminum alloy.
The invention provides a preparation method of the high-strength aluminum alloy, which comprises the following steps:
s1, smelting a raw material containing Al, si, fe, mn, zn and Ce for the first time to prepare a first mixture;
s2, adding the tantalum-nitrogen-containing graphene-copper aluminum alloy into the first mixture, and smelting again to obtain a second mixture;
s3, post-treating the covering agent and the second mixture to prepare a third mixture;
s4, casting the third mixture;
the tantalum-nitrogen-containing graphene-copper aluminum alloy comprises the following preparation raw materials in parts by weight:
10 parts of graphene oxide, 20-30 parts of tantalum ethoxide, 5-6 parts of copper ethoxide, 30-40 parts of aluminum powder, 1-3 parts of dopamine and 100-150 parts of tris hydrochloride solution.
According to one of the technical schemes of the preparation method, the preparation method at least has the following beneficial effects:
according to the invention, the surface of graphene oxide is provided with rich oxygen-containing functional groups, and dopamine is used for carrying out nitrogen modification on the graphene oxide, so that the tantalum element, copper element and aluminum powder are fully dispersed through the nitrogen-containing groups and the oxygen-containing functional groups, and the intermediate alloy with smaller granularity is prepared; therefore, the dispersity of the elements in the finally prepared aluminum alloy material is improved, and the overall strength of the aluminum alloy material is improved.
Ta and C, N form TaC and TaN; taC has the characteristics of high hardness, high thermodynamic stability and the like, and can inhibit the growth of crystal grains in the alloy, so that the comprehensive performance of the alloy is remarkably improved; taN can also improve the wear resistance of the aluminum alloy.
According to some embodiments of the present invention, the preparation method of the tantalum-nitrogen-containing graphene-copper aluminum alloy comprises the following steps:
s01, mixing graphene oxide, dopamine and ethanol to prepare a graphene oxide dispersion;
s02, adding tantalum ethoxide, copper ethoxide, aluminum powder and tris hydrochloride solution into the graphene oxide dispersion for reaction; concentrating to dryness, and collecting solid phase;
s03, calcining the solid phase in a reducing atmosphere;
the calcining temperature is 1100-1200 ℃.
In the calcining process, the graphene oxide is reduced into graphene in a reducing atmosphere; simultaneously under the reducing atmosphere, tantalum element forms compounds such as tantalum carbon, nitrogen carbide and the like; thereby fully improving the strength of the aluminum alloy material.
According to some embodiments of the invention, the first smelting temperature is 800 ℃ to 900 ℃.
According to some embodiments of the invention, the first smelting time is from 90 minutes to 100 minutes.
According to some embodiments of the invention, the remelting temperature is 660 ℃ to 695 ℃.
According to some embodiments of the invention, the remelting time is 30min to 40min.
According to some embodiments of the invention, the temperature of the treatment is 700 ℃ to 760 ℃.
According to some embodiments of the invention, the treatment is for a time period of from 10 minutes to 60 minutes.
According to some embodiments of the invention, the mass ratio of the capping agent to the second mixture is 2 to 4:1000.
According to some embodiments of the invention, the temperature of the reaction is 40 ℃ to 50 ℃.
According to some embodiments of the invention, the reaction time is 1h to 10h.
According to some embodiments of the invention, the calcination time is 2 to 10 hours.
According to some embodiments of the invention, the reducing atmosphere is a mixture of argon and hydrogen.
According to some embodiments of the invention, the argon gas in the reducing atmosphere has a volume fraction of 95% to 99%.
According to some embodiments of the invention, the mass to volume ratio of the graphene oxide to the ethanol is 1g:100 mL-200 mL.
According to some embodiments of the invention, the hydrochloric acid has a molar concentration of 0.2mol/L to 2mol/L.
In a second aspect, the present invention provides a high strength aluminum alloy made by the above-described method of making.
According to some embodiments of the invention, the high strength aluminum alloy comprises the following elements in mass fraction:
si:6% -8%, fe:0.4 to 0.5 percent of Mn:0.8% -1.0%, zn:0.7% -1.0% and Ce:0.1 to 0.5 percent of Ta:8 to 12 percent.
According to one of the technical schemes of the aluminum alloy, the aluminum alloy has at least the following beneficial effects:
the proper addition of Si is beneficial to obtaining comprehensive properties such as good corrosion resistance and the like on the basis of obtaining certain strength; si has solid solution strengthening effect in aluminum alloy; while the excessive Si has an improvement effect on strength, but obviously reduces the ductility of the material; therefore, the amount of Si element needs to be controlled within a reasonable range.
Fe and Mn, al energy to form (FeMn) Al 6 The phases, however, a total Fe+Mn of more than 1.5% form a large amount of coarse flaky (FeMn) Al 6 The ductility of the alloy is reduced; therefore, the amount of Fe element needs to be controlled.
Mn forms MnAl with Al 6 The strength of the phase increases with the increase of Mn, and the increase of Mn content causes large extrusion deformation resistance, but seriously deteriorates extrusion performance; the content of Mn element is controlled, so that the extrudability of the alloy, good heat conductivity and corrosion resistance are ensured.
In order to improve the fluidity of the alloy, adding a proper amount of rare earth element Ce into the alloy; the addition of Ce eliminates coarse compounds in the casting rod, improves the shape of the precipitate and reduces the hot extrusion force. Meanwhile, the addition of Ce element precipitates particles or rods in the second phase in the crystal, so as to play a role in dispersion strengthening and further improve the mechanical property.
The third aspect of the invention provides an application of the high-strength aluminum alloy in preparing an automobile hub.
Detailed Description
The conception and the technical effects produced by the present invention will be clearly and completely described in conjunction with the embodiments below to fully understand the objects, features and effects of the present invention. It is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and that other embodiments obtained by those skilled in the art without inventive effort are within the scope of the present invention based on the embodiments of the present invention.
In the description of the present invention, the descriptions of the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The specific conditions are not noted in the examples and are carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention.
The aluminum powder selected in the embodiment of the invention is spherical aluminum powder (the particle size is 2-3 μm) obtained from Hunan Jin New Material technologies Co., ltd.
The graphene oxide selected in the embodiment of the invention is purchased from XF002-2 (sheet diameter: 0.5 μm-5 μm, thickness: 0.8 nm-1.2 nm) of Xianfeng nanometer
Example 1
The embodiment is a high-strength aluminum alloy, which comprises the following elements in percentage by mass:
si:7%, fe:0.45%, mn:0.9%, ta:10%, zn:0.8% and Ce:0.2%.
The high strength aluminum alloy in this example was prepared from the following raw materials:
silicon aluminum master alloy, iron aluminum master alloy, manganese aluminum master alloy, zinc aluminum master alloy, cerium metal and tantalum-nitrogen-containing graphene-copper aluminum alloy.
The tantalum-nitrogen-containing graphene-copper aluminum alloy in the embodiment comprises the following preparation raw materials in parts by weight:
10 parts of graphene oxide, 28 parts of tantalum ethoxide, 5 parts of copper ethoxide, 32 parts of aluminum powder, 2 parts of dopamine and 150 parts of tris hydrochloride solution.
The tantalum-nitrogen-containing graphene-copper aluminum alloy is prepared by the following steps:
s1, preparing graphene oxide dispersion liquid:
mixing graphene oxide, dopamine and ethanol (the mass volume ratio of the graphene oxide to the ethanol is 1g:100 mL) to obtain graphene oxide dispersion liquid;
s2, mixing graphene oxide dispersion liquid, tantalum ethoxide, copper ethoxide, aluminum powder and a tris hydrochloride solution, then treating for 2 hours at 40 ℃, concentrating to dryness, and collecting a solid phase;
s3, calcining the solid phase at 1150 ℃ for 3 hours (the atmosphere is a reducing atmosphere, and the volume fraction of argon is 95 percent).
The preparation method of the high-strength aluminum alloy in the embodiment comprises the following steps:
s1, crushing a silicon-aluminum intermediate alloy, an iron-aluminum intermediate alloy, a manganese-aluminum intermediate alloy, a zinc-aluminum intermediate alloy and cerium metal, then putting the crushed materials into a smelting furnace, stirring, and smelting for 90 minutes at 850 ℃ in an argon atmosphere for the first time to obtain a first melt;
s2, adding the crushed tantalum-nitrogen-containing graphene-copper aluminum alloy into the first melt after mechanical deslagging, stirring, and remelting for 30min at 650 ℃ in an argon atmosphere to obtain a second melt;
s3, adding a covering agent (RJ-F1, mass ratio of the covering agent to the second molten liquid is 2:1000) into the second molten liquid, and standing at 700 ℃ for 40min to obtain a third molten liquid;
s4, pouring the third molten liquid obtained in the step S3 into ingots, and cooling to room temperature (25 ℃), thereby obtaining the high-strength aluminum alloy.
Example 2
The embodiment is a high-strength aluminum alloy comprising the following elements in mass percent:
si:6%, fe:0.5%, mn:1.0%, ta:8%, zn:1.0% and Ce:0.5%.
The tantalum-nitrogen-containing graphene-copper aluminum alloy in the embodiment comprises the following preparation raw materials in parts by weight:
10 parts of graphene oxide, 28 parts of tantalum ethoxide, 6 parts of copper ethoxide, 30 parts of aluminum powder, 1 part of dopamine and 150 parts of tris hydrochloride solution.
The preparation methods of tantalum-nitrogen-containing graphene-copper aluminum alloy and high-strength aluminum alloy in this example were performed with reference to example 1.
Example 3
The embodiment is a high-strength aluminum alloy comprising the following elements in mass percent:
si:8%, fe:0.4%, mn:0.8%, ta:12%, zn:0.7% and Ce:0.1%.
The tantalum-nitrogen-containing graphene-copper aluminum alloy in the embodiment comprises the following preparation raw materials in parts by weight:
10 parts of graphene oxide, 28 parts of tantalum ethoxide, 5.5 parts of copper ethoxide, 40 parts of aluminum powder, 3 parts of dopamine and 150 parts of tris hydrochloride solution.
The preparation methods of tantalum-nitrogen-containing graphene-copper aluminum alloy and high-strength aluminum alloy in this example were performed with reference to example 1.
Example 4
The embodiment is a high-strength aluminum alloy comprising the following elements in mass percent:
si:7.5%, fe:0.42%, mn:0.85%, ta:11%, zn:0.75% and Ce:0.4%.
The tantalum-nitrogen-containing graphene-copper aluminum alloy in the embodiment comprises the following preparation raw materials in parts by weight:
10 parts of graphene oxide, 28 parts of tantalum ethoxide, 5.8 parts of copper ethoxide, 36 parts of aluminum powder, 1.8 parts of dopamine and 150 parts of tris hydrochloride solution.
The preparation methods of tantalum-nitrogen-containing graphene-copper aluminum alloy and high-strength aluminum alloy in this example were performed with reference to example 1.
Example 5
The embodiment is a high-strength aluminum alloy comprising the following elements in mass percent:
si:7.8%, fe:0.43%, mn:0.87%, ta:9%, zn:0.9% and Ce:0.3%.
The tantalum-nitrogen-containing graphene-copper aluminum alloy in the embodiment comprises the following preparation raw materials in parts by weight:
10 parts of graphene oxide, 28 parts of tantalum ethoxide, 6 parts of copper ethoxide, 38 parts of aluminum powder, 1 part of dopamine and 150 parts of tris hydrochloride solution.
The preparation methods of tantalum-nitrogen-containing graphene-copper aluminum alloy and high-strength aluminum alloy in this example were performed with reference to example 1.
Comparative example 1
The comparative example is a high-strength aluminum alloy, comprising the following elements in mass percent:
si:7.8%, fe:0.43%, mn:0.87%, ta:9%, zn:0.9% and Ce:0.3%.
The tantalum-nitrogen-containing graphene-aluminum alloy in the comparative example comprises the following preparation raw materials in parts by weight:
10 parts of graphene oxide, 28 parts of tantalum ethoxide, 38 parts of aluminum powder, 1 part of dopamine and 150 parts of tris hydrochloride solution.
The tantalum-nitrogen-containing graphene-aluminum alloy is prepared by the following steps:
s1, preparing graphene oxide dispersion liquid:
mixing graphene oxide, dopamine and ethanol (the mass volume ratio of the graphene oxide to the ethanol is 1g:100 mL) to obtain graphene oxide dispersion liquid;
s2, mixing graphene oxide dispersion liquid, tantalum ethoxide, aluminum powder and tris hydrochloride solution, treating for 2 hours at 40 ℃, concentrating to dryness, and collecting a solid phase;
s3, calcining the solid phase at 1150 ℃ for 3 hours (the atmosphere is a reducing atmosphere, and the volume fraction of argon is 95 percent).
The preparation method of the high-strength aluminum alloy in the comparative example comprises the following steps:
s1, crushing a silicon-aluminum intermediate alloy, an iron-aluminum intermediate alloy, a manganese-aluminum intermediate alloy, a zinc-aluminum intermediate alloy and cerium metal, then putting the crushed materials into a smelting furnace, stirring, and smelting for 90 minutes at 850 ℃ in an argon atmosphere for the first time to obtain a first melt;
s2, adding the crushed tantalum-nitrogen-containing graphene-aluminum alloy into the first melt after mechanical deslagging, stirring, and remelting for 30min at 650 ℃ in an argon atmosphere to obtain a second melt;
s3, adding a covering agent (RJ-F1, mass ratio of the covering agent to the second molten liquid is 2:1000) into the second molten liquid, and standing at 700 ℃ for 40min to obtain a third molten liquid;
s4, pouring the third molten liquid obtained in the step S3 into ingots, and cooling to room temperature (25 ℃), thereby obtaining the high-strength aluminum alloy.
Comparative example 2
The comparative example is a high-strength aluminum alloy, comprising the following elements in mass percent:
si:7.8%, fe:0.43%, mn:0.87%, ta:9%, zn:0.9% and Ce:0.3%.
The tantalum-graphene-copper aluminum alloy in the comparative example comprises the following preparation raw materials in parts by weight:
10 parts of graphene oxide, 28 parts of tantalum ethoxide, 6 parts of copper ethoxide, 38 parts of aluminum powder and 150 parts of water.
The tantalum-graphene-copper aluminum alloy is prepared by the following steps:
s1, preparing graphene oxide dispersion liquid:
mixing graphene oxide, dopamine and ethanol (the mass volume ratio of the graphene oxide to the ethanol is 1g:100 mL) to obtain graphene oxide dispersion liquid;
s2, mixing graphene oxide dispersion liquid, tantalum ethoxide, copper ethoxide, aluminum powder and water, then treating for 2 hours at 40 ℃, concentrating to dryness, and collecting a solid phase;
s3, calcining the solid phase at 1150 ℃ for 3 hours (the atmosphere is a reducing atmosphere, and the volume fraction of argon is 95 percent).
The preparation method of the high-strength aluminum alloy in the comparative example comprises the following steps:
s1, crushing a silicon-aluminum intermediate alloy, an iron-aluminum intermediate alloy, a manganese-aluminum intermediate alloy, a zinc-aluminum intermediate alloy and cerium metal, then putting the crushed materials into a smelting furnace, stirring, and smelting for 90 minutes at 850 ℃ in an argon atmosphere for the first time to obtain a first melt;
s2, adding the crushed tantalum-graphene-copper aluminum alloy into the first melt after mechanical deslagging, stirring, and remelting for 30min at 650 ℃ in an argon atmosphere to obtain a second melt;
s3, adding a covering agent (RJ-F1, mass ratio of the covering agent to the second molten liquid is 2:1000) into the second molten liquid, and standing at 700 ℃ for 40min to obtain a third molten liquid;
s4, pouring the third molten liquid obtained in the step S3 into ingots, and cooling to room temperature (25 ℃), thereby obtaining the high-strength aluminum alloy.
Comparative example 3
The comparative example is a high-strength aluminum alloy, comprising the following elements in mass percent:
si:7.8%, fe:0.43%, mn:0.87%, ta:9%, zn:0.9% and Ce:0.3%.
The tantalum-copper aluminum alloy in the comparative example comprises the following preparation raw materials in parts by weight:
28 parts of tantalum ethoxide, 6 parts of copper ethoxide, 38 parts of aluminum powder, 1 part of dopamine and 150 parts of tris (hydroxymethyl) aminomethane hydrochloride solution.
The tantalum-copper aluminum alloy is prepared by the following steps:
s1, preparing graphene oxide dispersion liquid:
mixing dopamine and ethanol (the mass volume ratio of graphene oxide to ethanol is 1g:100 mL) to obtain a dopamine dispersion liquid;
s2, mixing the dopamine dispersion liquid, tantalum ethoxide, copper ethoxide, aluminum powder and a tris hydrochloride solution, treating for 2 hours at 40 ℃, concentrating to dryness, and collecting a solid phase;
s3, calcining the solid phase at 1150 ℃ for 3 hours (the atmosphere is a reducing atmosphere, and the volume fraction of argon is 95 percent).
The preparation method of the high-strength aluminum alloy in the comparative example comprises the following steps:
s1, crushing a silicon-aluminum intermediate alloy, an iron-aluminum intermediate alloy, a manganese-aluminum intermediate alloy, a zinc-aluminum intermediate alloy and cerium metal, then putting the crushed materials into a smelting furnace, stirring, and smelting for 90 minutes at 850 ℃ in an argon atmosphere for the first time to obtain a first melt;
s2, adding the crushed tantalum-copper aluminum alloy into the first melt after mechanical deslagging, stirring, and remelting for 30min at 650 ℃ in an argon atmosphere to obtain a second melt;
s3, adding a covering agent (RJ-F1, mass ratio of the covering agent to the second molten liquid is 2:1000) into the second molten liquid, and standing at 700 ℃ for 40min to obtain a third molten liquid;
s4, pouring the third molten liquid obtained in the step S3 into ingots, and cooling to room temperature (25 ℃), thereby obtaining the high-strength aluminum alloy.
Comparative example 4
The comparative example is a high-strength aluminum alloy, comprising the following elements in mass percent:
si:7.8%, fe:0.43%, mn:0.87%, ta:6%, zn:0.9% and Ce:0.3%.
The tantalum-nitrogen-containing graphene-copper aluminum alloy in the comparative example comprises the following preparation raw materials in parts by weight:
10 parts of graphene oxide, 28 parts of tantalum ethoxide, 6 parts of copper ethoxide, 38 parts of aluminum powder, 1 part of dopamine and 150 parts of tris hydrochloride solution.
The tantalum-nitrogen-containing graphene-copper aluminum alloy is prepared by the following steps:
s1, preparing graphene oxide dispersion liquid:
mixing graphene oxide, dopamine and ethanol (the mass volume ratio of the graphene oxide to the ethanol is 1g:100 mL) to obtain graphene oxide dispersion liquid;
s2, mixing graphene oxide dispersion liquid, tantalum ethoxide, copper ethoxide, aluminum powder, dopamine and tris hydrochloride solution, treating for 2 hours at 40 ℃, concentrating to dryness, and collecting a solid phase;
s3, calcining the solid phase at 1150 ℃ for 3 hours (the atmosphere is a reducing atmosphere, and the volume fraction of argon is 95 percent).
The preparation method of the high-strength aluminum alloy in the comparative example comprises the following steps:
s1, crushing a silicon-aluminum intermediate alloy, an iron-aluminum intermediate alloy, a manganese-aluminum intermediate alloy, a zinc-aluminum intermediate alloy and cerium metal, then putting the crushed materials into a smelting furnace, stirring, and smelting for 90 minutes at 850 ℃ in an argon atmosphere for the first time to obtain a first melt;
s2, adding the crushed tantalum-nitrogen-containing graphene-copper aluminum alloy into the first melt after mechanical deslagging, stirring, and remelting for 30min at 650 ℃ in an argon atmosphere to obtain a second melt;
s3, adding a covering agent (RJ-F1, mass ratio of the covering agent to the second molten liquid is 2:1000) into the second molten liquid, and standing at 700 ℃ for 40min to obtain a third molten liquid;
s4, pouring the third molten liquid obtained in the step S3 into ingots, and cooling to room temperature (25 ℃), thereby obtaining the high-strength aluminum alloy.
Comparative example 5
The comparative example is a high-strength aluminum alloy, comprising the following elements in mass percent:
si:7.8%, fe:0.43%, mn:0.87%, zn:0.9% and Ce:0.3%.
The preparation method of the high-strength aluminum alloy in the comparative example comprises the following steps:
s1, crushing a silicon-aluminum intermediate alloy, an iron-aluminum intermediate alloy, a manganese-aluminum intermediate alloy, a zinc-aluminum intermediate alloy and cerium metal, then putting the crushed materials into a smelting furnace, stirring, and smelting for 90 minutes at 850 ℃ in an argon atmosphere for the first time to obtain a first melt;
s2, adding a covering agent (RJ-F1, mass ratio of the covering agent to the first melt is 2:1000) into the first melt, and standing at 700 ℃ for 40min to obtain a second melt;
s3, pouring the second molten liquid obtained in the step S2 into ingots, and cooling to room temperature (25 ℃), thereby obtaining the high-strength aluminum alloy.
The results of the performance tests of the high strength aluminum alloys prepared in examples 1 to 5 and comparative examples 1 to 5 of the present invention are shown in Table 1.
TABLE 1 Performance test results of high strength aluminum alloys prepared in examples 1 to 5 and comparative examples 1 to 5 according to the present invention
In summary, the invention utilizes the rich oxygen-containing functional groups on the surface of the graphene oxide, and the dopamine carries out nitrogen modification on the graphene oxide, and fully disperses tantalum element, copper element and aluminum powder through the nitrogen-containing groups and the oxygen-containing functional groups, so that the master alloy with smaller granularity is prepared; therefore, the dispersity of the elements in the finally prepared aluminum alloy material is improved, and the overall strength of the aluminum alloy material is improved. Ta and C, N form TaC and TaN; taC has the characteristics of high hardness, high thermodynamic stability and the like, and can inhibit the growth of crystal grains in the alloy, so that the comprehensive performance of the alloy is remarkably improved; taN can also improve the wear resistance of the aluminum alloy.
While the foregoing is directed to embodiments of the present invention, other and further details of the invention may be had by the present invention, it should be understood that the foregoing description is merely illustrative of the present invention and that no limitations are intended to the scope of the invention, except insofar as modifications, equivalents, improvements or modifications are within the spirit and principles of the invention.
Claims (6)
1. The preparation method of the high-strength aluminum alloy is characterized by comprising the following steps of:
s1, smelting a raw material containing Al, si, fe, mn, zn and Ce for the first time to prepare a first melt;
s2, adding the tantalum-nitrogen-containing graphene-copper-aluminum alloy into the first melt, and smelting again to obtain a second melt;
s3, adding a covering agent into the second molten liquid, and standing for 10-60min at 700-760 ℃ to obtain a third molten liquid;
s4, casting the third molten liquid;
the tantalum-nitrogen-containing graphene-copper aluminum alloy comprises the following preparation raw materials in parts by weight:
10 parts of graphene oxide, 20-30 parts of tantalum ethoxide, 5-6 parts of copper ethoxide, 30-40 parts of aluminum powder, 1-3 parts of dopamine and 100-150 parts of tris hydrochloride solution;
the preparation method of the tantalum-nitrogen-containing graphene-copper aluminum alloy comprises the following steps:
s01, mixing graphene oxide, dopamine and ethanol to prepare a graphene oxide dispersion;
s02, adding tantalum ethoxide, copper ethoxide, aluminum powder and tris (hydroxymethyl) aminomethane hydrochloride solution into the graphene oxide dispersion for reaction at the temperature of 40-50 ℃, concentrating to dryness, and collecting a solid phase;
s03, calcining the solid phase in a reducing atmosphere;
the calcining temperature is 1100-1200 ℃;
the high-strength aluminum alloy comprises the following elements in percentage by mass:
si:6% -8%, fe:0.4 to 0.5 percent of Mn:0.8% -1.0%, zn:0.7% -1.0% and Ce:0.1 to 0.5 percent of Ta:8 to 12 percent.
2. The method according to claim 1, wherein the temperature of the first smelting is 800 ℃ to 900 ℃.
3. The method according to claim 1, wherein the remelting temperature is 660 ℃ to 695 ℃.
4. The method of claim 1, wherein the calcination time is 2-10 hours.
5. A high strength aluminum alloy prepared by the method of any one of claims 1 to 4.
6. Use of the high strength aluminum alloy of claim 5 in the manufacture of automobile hubs.
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| CN114855035A (en) * | 2022-05-26 | 2022-08-05 | 扬州工业职业技术学院 | Heat-resistant high-strength automobile hub aluminum alloy material |
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| CN114855035A (en) * | 2022-05-26 | 2022-08-05 | 扬州工业职业技术学院 | Heat-resistant high-strength automobile hub aluminum alloy material |
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