CN107974580A - A kind of electronic product rare earth aluminium alloy - Google Patents
A kind of electronic product rare earth aluminium alloy Download PDFInfo
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- CN107974580A CN107974580A CN201711254405.8A CN201711254405A CN107974580A CN 107974580 A CN107974580 A CN 107974580A CN 201711254405 A CN201711254405 A CN 201711254405A CN 107974580 A CN107974580 A CN 107974580A
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- 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
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- 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
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- 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
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- 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
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
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- 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
Abstract
The invention discloses a kind of electronic product rare earth aluminium alloy, belong to technical field of aluminium alloy preparation.The electronic product rare earth aluminium alloy, in units of parts by weight, including following raw material：1,200 1850 parts of aluminium, 12 19 parts of copper, 58 parts of vanadium, 26 parts of manganese, 48 parts of tin, 13 parts of chromium, 20 38 parts of rare earth element, 10 15 parts of titanium carbide, 8 12 parts of tungsten carbide, 79 parts of tungsten silicide, 35 parts of tungsten, 15 20 parts of refining agent, 26 35 parts of grain refiner.Technique using the present invention, is remarkably improved tensile strength, elongation at break and the corrosion resistance of electronic product rare earth aluminium alloy.
Description
Technical field
The invention belongs to technical field of aluminium alloy preparation, and in particular to a kind of electronic product rare earth aluminium alloy.
Background technology
Aluminium alloy is most widely used one kind non-ferrous metal structural material in industry, it is in Aeronautics and Astronautics, automobile, machine
It is used widely in tool manufacture, ship and chemical industry.With the rapid development of science and technology and industrial economy, aluminium alloy
Demand it is increasing, therefore the research of aluminium alloy also therewith deeply.The extensive use of aluminium alloy promotes aluminium alloy in electric power
The development of industry, while the application field of aluminium alloy has been widened in the development of power industry again.
Base components-power cable of power industry, is the resource for conveying and distributing electric energy, its basic structure is by line
Core, insulating layer, shielded layer and four part of protective layer composition.Wherein, core is the current-carrying part of power cable, for conveying electricity
Can, it is the major part of power cable；Insulating layer by between core and the earth and out of phase core electric equipment compartment each other every
From guarantee electrical energy transportation, it is indispensable part in power cable structure；Protective layer be protect power cable from
The intrusion of introduced contaminants and moisture, and prevent external force from directly damaging power cable.Since copper has good electric conductivity,
Copper is widely used in the core of power cable.With the increasingly scarcity of copper resource, and the content of aluminium is very abundant, therefore replaces copper with aluminium
The concern of researcher is received, aluminium alloy becomes the hot spot of research as cable conductor at present.
Aluminium alloy cable substitutes copper cable and is increasingly becoming a kind of trend, and is widely applied.Aluminium of the prior art closes
Golden conductor material, has all done in electrical property, corrosion resistance, mechanical performance, processing performance, creep-resistant property etc. and has largely ground
Study carefully and improve, but the electric property under the corrosion resistance for aluminium alloy cable at low ambient temperatures, and cryogenic conditions
Have much room for improvement with tensile property.
A kind of Chinese patent literature " rare earth aluminium alloy and preparation method thereof (patent No.：ZL201510434656.9 it is) " open
A kind of rare earth aluminium alloy and preparation method thereof.Rare earth aluminium alloy in the invention, by weight percentage, including following component：
The Cu of 1.1-1.3wt%；The V of 0.9-1.1wt%；The Mn of 1.3-1.4wt%；The Sn of 0.45-0.55wt%；0.12-
The Cr of 0.14wt%；The Pr of 0.85-0.98wt%；The Er of 0.45-0.66wt%；Surplus is aluminium.Rare earth aluminium in the invention closes
Gold utensil have it is excellent process, machinery, electric property, but there is tensile strength, elongation at break are relatively low, corrosion resistance is poor
Problem.
The content of the invention
It is " a kind of in Chinese patent literature to solve the object of the present invention is to provide a kind of electronic product rare earth aluminium alloy
Rare earth aluminium alloy and preparation method thereof (patent No.：ZL201510434656.9 it is how excellent on the basis of aluminium alloy formula disclosed in) "
Change component, dosage, method etc., improve tensile strength, elongation at break and the corrosion resistance of aluminium alloy.
In order to solve the above technical problems, the present invention uses following technical scheme：
A kind of electronic product rare earth aluminium alloy, in units of parts by weight, including following raw material：1200-1850 parts of aluminium, copper
12-19 parts, 5-8 parts of vanadium, 2-6 parts of manganese, 4-8 parts of tin, 1-3 parts of chromium, 20-38 parts of rare earth element, 10-15 parts of titanium carbide, tungsten carbide
8-12 parts, 7-9 parts of tungsten silicide, 3-5 parts of tungsten, 15-20 parts of refining agent, 26-35 parts of grain refiner.
Further, the electronic product rare earth aluminium alloy, in units of parts by weight, including following raw material：Aluminium
1620 parts, 16 parts of copper, 7 parts of vanadium, 5 parts of manganese, 7 parts of tin, 2 parts of chromium, 32 parts of rare earth element, 14 parts of titanium carbide, 10 parts of tungsten carbide, silication
8 parts of tungsten, 4 parts of tungsten, 18 parts of refining agent, 30 parts of grain refiner.
Further, the rare earth element is in units of parts by weight, including following raw material：7-9 parts of praseodymium, 2-6 parts of erbium, samarium 1-
3 parts, 3-5 parts of dysprosium, 5-8 parts of holmium, 2-7 parts of yttrium.
Further, the refining agent is in units of parts by weight, including following raw material：10-20 parts of sodium chloride, sodium fluoride 8-
16 parts, 5-7 parts of graphite, 3-6 parts of calcirm-fluoride.
Further, the grain refiner is in units of parts by weight, including following raw material：Aluminium-silicon-manganese-copper-lanthanum alloy
7-15 parts of intermediate, aluminium-titanium-carbon -3-6 parts of cerium alloy intermediate.
The invention has the advantages that：
(1) as the data of embodiment 1-3 and comparative example 8 as it can be seen that the tensile strength of aluminium alloy made from embodiment 1-3, disconnected
Split elongation and corrosion resistance is significantly higher than the tensile strength of aluminium alloy, elongation at break and corrosion resistance made from comparative example 8；
At the same time by the data of embodiment 1-3 as it can be seen that embodiment 1 is optimum embodiment.
(2) by embodiment 1 and the data of comparative example 1-7 as it can be seen that rare earth element, titanium carbide, tungsten carbide, tungsten silicide, tungsten, crystalline substance
Grain fining agent plays synergistic effect in aluminium alloy is prepared, and significantly improves tensile strength, the extension at break of aluminum alloy materials
Rate and corrosion resistance；This is：Rare earth element belongs to typical metallic element, and activity is strong, at high temperature easily with being dissolved in molten aluminum
Nonmetallic inclusion element interaction, pass through chemically react generation compound.Rare Earth Elements of Praseodymium, erbium, samarium, dysprosium, holmium, yttrium add
Add, rare earth hydride can be generated with hydrogen, will not assemble to form bubble with hydrogen existing for compound form, effectively inhibit bubble
Appearance, reduce pin hole rate in aluminium, there is certain dehydrogenation, refining and catharsis, so as to improve the tension of aluminum alloy materials
Intensity, elongation at break and corrosion resistance；Molten aluminium alloy after melting is carried out to the change of nano silicon carbide and nanometer tungsten carbide
Matter processing, the nanometer forming core and nano titanium carbide formed with nano-scale and high surface particle in molten aluminium alloy and
Nanometer tungsten carbide particle dispersion is evenly distributed on matrix, it has high rigidity, high-melting-point, high temperature resistant, size small and the spread
The characteristics of high, increase the core amounts of forming core in crystallization process, reduce crystallite dimension, refined crystal grain, nano titanium carbide,
Dispersion hardening during the high surface and crystal grain thinning of nanometer tungsten carbide, tungsten silicide and tungsten powder, effectively raises aluminium conjunction
The hardness and toughness of gold, so as to improve tensile strength, elongation at break and corrosion resistance；Grain refiner can hinder crystal grain
Growth so that aluminum grain refinement, is conducive to crack initiation position and expansion path in aluminium alloy fracture process and changes
Become so that aluminium alloy obtains toughening, so as to improve the tensile strength of aluminum alloy materials, elongation at break；Meanwhile grain refiner with
The rare earth element of this formula is used together, and can be enabled aluminum alloy to intensity and be significantly improved, this is related with to its Grain Refinement Effect, makes
Open grain structure is recovering with being effectively controlled in recrystallization process, after homogenizing annealing, obtains the fine grain group of dispersion-strengtherning
Knit, so as to strengthen tensile strength and corrosion resistance.
(3) rare earth element in the present invention, titanium carbide, tungsten carbide, tungsten silicide, tungsten, grain refiner be as reinforcement system,
Embodiment 1-3 by control rare earth element, titanium carbide, tungsten carbide, tungsten silicide, tungsten, grain refiner weight ratio be (20-
38):(10-15):(8-12):(7-9):(3-5):(26-35), realizes and is used as system using rare earth element in whole reinforcement system
Leading role raw material, it is while brilliant using nano titanium carbide, nanometer tungsten carbide, the high surface of tungsten silicide and tungsten powder and refinement
Dispersion hardening performance during grain, grain refiner can hinder the growth of crystal grain so that aluminum grain refinement, is conducive to aluminium
Crack initiation position and expansion path change during alloy fracture so that aluminium alloy obtains toughening.So that whole mend
Strong system, which is applied in the electronic product rare earth aluminium alloy of the present invention, can effectively improve the tensile strength of aluminum alloy materials, break
Split elongation and corrosion resistance.
Embodiment
For ease of more fully understanding the present invention, it is illustrated by following instance, these examples belong to the protection of the present invention
Scope, but do not limit the scope of the invention.
In embodiment, the electronic product rare earth aluminium alloy, in units of parts by weight, including following raw material：Aluminium
1200-1850 parts, 12-19 parts of copper, 5-8 parts of vanadium, 2-6 parts of manganese, 4-8 parts of tin, 1-3 parts of chromium, 20-38 parts of rare earth element, titanium carbide
10-15 parts, 8-12 parts of tungsten carbide, 7-9 parts of tungsten silicide, 3-5 parts of tungsten, 15-20 parts of refining agent, 26-35 parts of grain refiner；
The rare earth element is in units of parts by weight, including following raw material：7-9 parts of praseodymium, 2-6 parts of erbium, 1-3 parts of samarium, dysprosium 3-5
Part, 5-8 parts of holmium, 2-7 parts of yttrium；
The refining agent is in units of parts by weight, including following raw material：10-20 parts of sodium chloride, 8-16 parts of sodium fluoride, graphite
5-7 parts, 3-6 parts of calcirm-fluoride；
The grain refiner is in units of parts by weight, including following raw material：Aluminium-silicon-manganese-copper-lanthanum alloy intermediate 7-
15 parts, aluminium-titanium-carbon -3-6 parts of cerium alloy intermediate；Aluminium, silicon, manganese, copper, the lanthanum of the aluminium-silicon-manganese-copper-lanthanum alloy intermediate
Weight ratio be (75-86):(1.2-3.8):(2.2-7):(1.3-5):(0.9-1.2)；Among the aluminium-titanium-carbon-cerium alloy
The aluminium of body, titanium, carbon, the weight ratio of cerium are (85-98):(1.2-1.9):(0.6-1.2):(0.3-0.5)；
The preparation method of the electronic product rare earth aluminium alloy, comprises the following steps：
S1：Add aluminium in electromagnetic induction furnace, rise temperature makes its fusing to 850-900 DEG C, and addition is wrapped up with aluminium foil
The silicon of weight ratio, manganese, copper, the melting of lanthanum powder, and alloy melt is stirred, after stirring 12-14min, carry out at degasification
Reason, stands, is then ultrasonically treated, obtains aluminium-silicon-manganese-copper-lanthanum alloy intermediate, the temperature of supersound process is 780-800
DEG C, ultrasonic power 20-25KW, processing time 26-35min；Prepared using identical method among aluminium-titanium-carbon-cerium alloy
Body；Grain refiner is made in aluminium-silicon-manganese-copper-lanthanum alloy intermediate and aluminium-titanium-carbon-cerium alloy intermediate by weight, institute
The size for stating grain refiner is less than 15 μm；
S2：Aluminium, copper, vanadium, manganese, tin, chromium, rare earth element, titanium carbide, tungsten carbide, tungsten silicide, tungsten are put into by weight
Melted in smelting furnace, obtain molten aluminium alloy；
S3：After molten aluminium alloy is warming up to 745-760 DEG C, the grain refiner stirring of parts by weight is added；
S4：The refining agent of parts by weight is added in the liquation of gained in step s3, while is passed through inert gas, is stirred continuously
Refined, it is 730-750 DEG C to control refining temperature, and liquation is carried out after refining to take off Slag treatment, then cools down, stands 30-
40min；
S5：The molten aluminium alloy of gained in step S3 is subjected to casting；
S6：460-510 DEG C, the solution treatment of 6-10h, obtained electronic product rare earth aluminium alloy are carried out to casting.
Below by more specific embodiment, the present invention will be described.
Embodiment 1
A kind of electronic product rare earth aluminium alloy, in units of parts by weight, including following raw material：1620 parts of aluminium, 16 parts of copper,
7 parts of vanadium, 5 parts of manganese, 7 parts of tin, 2 parts of chromium, 32 parts of rare earth element, 14 parts of titanium carbide, 10 parts of tungsten carbide, 8 parts of tungsten silicide, 4 parts of tungsten, essence
Refine 18 parts of agent, 30 parts of grain refiner；
The rare earth element is in units of parts by weight, including following raw material：8 parts of praseodymium, 4 parts of erbium, 2 parts of samarium, 4 parts of dysprosium, holmium 7
Part, 6 parts of yttrium；
The refining agent is in units of parts by weight, including following raw material：16 parts of sodium chloride, 15 parts of sodium fluoride, 6 parts of graphite,
5 parts of calcirm-fluoride；
The grain refiner is in units of parts by weight, including following raw material：Aluminium-silicon-manganese-copper-lanthanum alloy intermediate 12
Part, aluminium-titanium-carbon -5 parts of cerium alloy intermediate；Aluminium, silicon, manganese, copper, the weight of lanthanum of the aluminium-silicon-manganese-copper-lanthanum alloy intermediate
Amount is than being 82:3:5:4:1；The aluminium of the aluminium-titanium-carbon-cerium alloy intermediate, titanium, carbon, the weight ratio of cerium are 94:1.6:1:
0.4；
The preparation method of the electronic product rare earth aluminium alloy, comprises the following steps：
S1：Add aluminium in electromagnetic induction furnace, rise temperature makes its fusing, the weight that addition is wrapped up with aluminium foil to 885 DEG C
The silicon of part ratio, manganese, copper, the melting of lanthanum powder, and alloy melt is stirred, after stirring 13min, degassing processing is carried out, is stood,
Then it is ultrasonically treated, obtains aluminium-silicon-manganese-copper-lanthanum alloy intermediate, the temperature of supersound process is 790 DEG C, ultrasonic power
For 24KW, processing time 30min；Aluminium-titanium-carbon-cerium alloy intermediate is prepared using identical method；By aluminium-silicon-manganese-copper-
Grain refiner, the ruler of the grain refiner is made in lanthanum alloy intermediate and aluminium-titanium-carbon-cerium alloy intermediate by weight
Very little is less than 15 μm；
S2：Aluminium, copper, vanadium, manganese, tin, chromium, rare earth element, titanium carbide, tungsten carbide, tungsten silicide, tungsten are put into by weight
Melted in smelting furnace, obtain molten aluminium alloy；
S3：After molten aluminium alloy is warming up to 750 DEG C, the grain refiner stirring of parts by weight is added；
S4：The refining agent of parts by weight is added in the liquation of gained in step s3, while is passed through inert gas, is stirred continuously
Refined, it is 745 DEG C to control refining temperature, and liquation is carried out after refining to take off Slag treatment, then cools down, stands 35min；
S5：The molten aluminium alloy of gained in step S3 is subjected to casting；
S6：500 DEG C, the solution treatment of 9h, obtained electronic product rare earth aluminium alloy are carried out to casting.
Embodiment 2
A kind of electronic product rare earth aluminium alloy, in units of parts by weight, including following raw material：1200 parts of aluminium, 19 parts of copper,
8 parts of vanadium, 6 parts of manganese, 8 parts of tin, 3 parts of chromium, 20 parts of rare earth element, 10 parts of titanium carbide, 8 parts of tungsten carbide, 7 parts of tungsten silicide, 3 parts of tungsten, essence
Refine 15 parts of agent, 26 parts of grain refiner；
The rare earth element is in units of parts by weight, including following raw material：7 parts of praseodymium, 6 parts of erbium, 1 part of samarium, 5 parts of dysprosium, holmium 5
Part, 7 parts of yttrium；
The refining agent is in units of parts by weight, including following raw material：20 parts of sodium chloride, 8 parts of sodium fluoride, 7 parts of graphite, fluorine
Change 3 parts of calcium；
The grain refiner is in units of parts by weight, including following raw material：Aluminium-silicon-manganese-copper-lanthanum alloy intermediate 7
Part, aluminium-titanium-carbon -6 parts of cerium alloy intermediate；Aluminium, silicon, manganese, copper, the weight of lanthanum of the aluminium-silicon-manganese-copper-lanthanum alloy intermediate
Amount is than being 75:1.2:7:5:1.2；The aluminium of the aluminium-titanium-carbon-cerium alloy intermediate, titanium, carbon, the weight ratio of cerium are 98:1.9:
0.6:0.3；
The preparation method of the electronic product rare earth aluminium alloy, comprises the following steps：
S1：Add aluminium in electromagnetic induction furnace, rise temperature makes its fusing, the weight that addition is wrapped up with aluminium foil to 850 DEG C
The silicon of part ratio, manganese, copper, the melting of lanthanum powder, and alloy melt is stirred, after stirring 14min, degassing processing is carried out, is stood,
Then it is ultrasonically treated, obtains aluminium-silicon-manganese-copper-lanthanum alloy intermediate, the temperature of supersound process is 780 DEG C, ultrasonic power
For 20KW, processing time 35min；Aluminium-titanium-carbon-cerium alloy intermediate is prepared using identical method；By aluminium-silicon-manganese-copper-
Grain refiner, the ruler of the grain refiner is made in lanthanum alloy intermediate and aluminium-titanium-carbon-cerium alloy intermediate by weight
Very little is less than 15 μm；
S2：Aluminium, copper, vanadium, manganese, tin, chromium, rare earth element, titanium carbide, tungsten carbide, tungsten silicide, tungsten are put into by weight
Melted in smelting furnace, obtain molten aluminium alloy；
S3：After molten aluminium alloy is warming up to 745 DEG C, the grain refiner stirring of parts by weight is added；
S4：The refining agent of parts by weight is added in the liquation of gained in step s3, while is passed through inert gas, is stirred continuously
Refined, it is 730 DEG C to control refining temperature, and liquation is carried out after refining to take off Slag treatment, then cools down, stands 40min；
S5：The molten aluminium alloy of gained in step S3 is subjected to casting；
S6：460 DEG C, the solution treatment of 10h, obtained electronic product rare earth aluminium alloy are carried out to casting.
Embodiment 3
A kind of electronic product rare earth aluminium alloy, in units of parts by weight, including following raw material：1850 parts of aluminium, 12 parts of copper,
5 parts of vanadium, 2 parts of manganese, 4 parts of tin, 1 part of chromium, 38 parts of rare earth element, 15 parts of titanium carbide, 12 parts of tungsten carbide, 9 parts of tungsten silicide, 5 parts of tungsten, essence
Refine 20 parts of agent, 35 parts of grain refiner；
The rare earth element is in units of parts by weight, including following raw material：9 parts of praseodymium, 2 parts of erbium, 3 parts of samarium, 3 parts of dysprosium, holmium 8
Part, 2 parts of yttrium；
The refining agent is in units of parts by weight, including following raw material：10 parts of sodium chloride, 16 parts of sodium fluoride, 5 parts of graphite,
6 parts of calcirm-fluoride；
The grain refiner is in units of parts by weight, including following raw material：Aluminium-silicon-manganese-copper-lanthanum alloy intermediate 15
Part, aluminium-titanium-carbon -3 parts of cerium alloy intermediate；Aluminium, silicon, manganese, copper, the weight of lanthanum of the aluminium-silicon-manganese-copper-lanthanum alloy intermediate
Amount is than being 86:3.8:2.2:1.3:0.9；The aluminium of the aluminium-titanium-carbon-cerium alloy intermediate, titanium, carbon, the weight ratio of cerium are 85:
1.2:1.2:0.5；
The preparation method of the electronic product rare earth aluminium alloy, comprises the following steps：
S1：Add aluminium in electromagnetic induction furnace, rise temperature makes its fusing, the weight that addition is wrapped up with aluminium foil to 900 DEG C
The silicon of part ratio, manganese, copper, the melting of lanthanum powder, and alloy melt is stirred, after stirring 12-14min, degassing processing is carried out, it is quiet
Put, be then ultrasonically treated, obtain aluminium-silicon-manganese-copper-lanthanum alloy intermediate, the temperature of supersound process is 800 DEG C, ultrasonic work(
Rate is 25KW, processing time 26min；Aluminium-titanium-carbon-cerium alloy intermediate is prepared using identical method；By aluminium-silicon-manganese-
Grain refiner is made in copper-lanthanum alloy intermediate and aluminium-titanium-carbon-cerium alloy intermediate by weight, the grain refiner
Size is less than 15 μm；
S2：Aluminium, copper, vanadium, manganese, tin, chromium, rare earth element, titanium carbide, tungsten carbide, tungsten silicide, tungsten are put into by weight
Melted in smelting furnace, obtain molten aluminium alloy；
S3：After molten aluminium alloy is warming up to 760 DEG C, the grain refiner stirring of parts by weight is added；
S4：The refining agent of parts by weight is added in the liquation of gained in step s3, while is passed through inert gas, is stirred continuously
Refined, it is 750 DEG C to control refining temperature, and liquation is carried out after refining to take off Slag treatment, then cools down, stands 3min；
S5：The molten aluminium alloy of gained in step S3 is subjected to casting；
S6：510 DEG C, the solution treatment of 6h, obtained electronic product rare earth aluminium alloy are carried out to casting.
Comparative example 1
It is essentially identical with the preparation process of embodiment 1, have only the difference is that preparing the original of electronic product rare earth aluminium alloy
Lack rare earth element, titanium carbide, tungsten carbide, tungsten silicide, tungsten, grain refiner in material.
Comparative example 2
It is essentially identical with the preparation process of embodiment 1, have only the difference is that preparing the original of electronic product rare earth aluminium alloy
Lack rare earth element in material.
Comparative example 3
It is essentially identical with the preparation process of embodiment 1, have only the difference is that preparing the original of electronic product rare earth aluminium alloy
Lack titanium carbide in material.
Comparative example 4
It is essentially identical with the preparation process of embodiment 1, have only the difference is that preparing the original of electronic product rare earth aluminium alloy
Lack tungsten carbide in material.
Comparative example 5
It is essentially identical with the preparation process of embodiment 1, have only the difference is that preparing the original of electronic product rare earth aluminium alloy
Lack tungsten silicide in material.
Comparative example 6
It is essentially identical with the preparation process of embodiment 1, have only the difference is that preparing the original of electronic product rare earth aluminium alloy
Lack tungsten in material.
Comparative example 7
It is essentially identical with the preparation process of embodiment 1, have only the difference is that preparing the original of electronic product rare earth aluminium alloy
Lack grain refiner in material.
Comparative example 8
Using a kind of Chinese patent literature " rare earth aluminium alloy and preparation method thereof (patent No.：ZL201510434656.9)”
The technique of embodiment 1-6 prepares aluminium alloy.
Aluminium alloy made from embodiment 1-3 and comparative example 1-8 is tested for the property as the method for comparative example 8, as a result such as
Shown in following table.
As seen from the above table：(1) as the data of embodiment 1-3 and comparative example 8 as it can be seen that aluminium alloy made from embodiment 1-3
Tensile strength, elongation at break and corrosion resistance are significantly higher than the tensile strength of aluminium alloy, elongation at break made from comparative example 8
And corrosion resistance；At the same time by the data of embodiment 1-3 as it can be seen that embodiment 1 is optimum embodiment.
(2) by embodiment 1 and the data of comparative example 1-7 as it can be seen that rare earth element, titanium carbide, tungsten carbide, tungsten silicide, tungsten, crystalline substance
Grain fining agent plays synergistic effect in aluminium alloy is prepared, and significantly improves tensile strength, the extension at break of aluminum alloy materials
Rate and corrosion resistance；This is：Rare earth element belongs to typical metallic element, and activity is strong, at high temperature easily with being dissolved in molten aluminum
Nonmetallic inclusion element interaction, pass through chemically react generation compound.Rare Earth Elements of Praseodymium, erbium, samarium, dysprosium, holmium, yttrium add
Add, rare earth hydride can be generated with hydrogen, will not assemble to form bubble with hydrogen existing for compound form, effectively inhibit bubble
Appearance, reduce pin hole rate in aluminium, there is certain dehydrogenation, refining and catharsis, so as to improve the tension of aluminum alloy materials
Intensity, elongation at break and corrosion resistance；Molten aluminium alloy after melting is carried out to the change of nano silicon carbide and nanometer tungsten carbide
Matter processing, the nanometer forming core and nano titanium carbide formed with nano-scale and high surface particle in molten aluminium alloy and
Nanometer tungsten carbide particle dispersion is evenly distributed on matrix, it has high rigidity, high-melting-point, high temperature resistant, size small and the spread
The characteristics of high, increase the core amounts of forming core in crystallization process, reduce crystallite dimension, refined crystal grain, nano titanium carbide,
Dispersion hardening during the high surface and crystal grain thinning of nanometer tungsten carbide, tungsten silicide and tungsten powder, effectively raises aluminium conjunction
The hardness and toughness of gold, so as to improve tensile strength, elongation at break and corrosion resistance；Grain refiner can hinder crystal grain
Growth so that aluminum grain refinement, is conducive to crack initiation position and expansion path in aluminium alloy fracture process and changes
Become so that aluminium alloy obtains toughening, so as to improve the tensile strength of aluminum alloy materials, elongation at break；Meanwhile grain refiner with
The rare earth element of this formula is used together, and can be enabled aluminum alloy to intensity and be significantly improved, this is related with to its Grain Refinement Effect, makes
Open grain structure is recovering with being effectively controlled in recrystallization process, after homogenizing annealing, obtains the fine grain group of dispersion-strengtherning
Knit, so as to strengthen tensile strength and corrosion resistance.
Rare earth element, titanium carbide, tungsten carbide, tungsten silicide, tungsten, grain refiner in the present invention is real as reinforcement system
Apply a 1-3 by control rare earth element, titanium carbide, tungsten carbide, tungsten silicide, tungsten, grain refiner weight ratio be (20-38):
(10-15):(8-12):(7-9):(3-5):(26-35), is realized and is used as the master of system using rare earth element in whole reinforcement system
Effect raw material is led, while utilizes the high surface and crystal grain thinning mistake of nano titanium carbide, nanometer tungsten carbide, tungsten silicide and tungsten powder
Dispersion hardening performance in journey, grain refiner can hinder the growth of crystal grain so that aluminum grain refinement, is conducive to aluminium alloy
Crack initiation position and expansion path change in fracture process so that aluminium alloy obtains toughening.So that whole reinforcing body
System applies in the electronic product rare earth aluminium alloy of the present invention tensile strength that can effectively improve aluminum alloy materials, fracture is stretched
Long rate and corrosion resistance.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention, for the skill of this area
For art personnel, the invention may be variously modified and varied.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.
Claims (5)
- A kind of 1. electronic product rare earth aluminium alloy, it is characterised in that in units of parts by weight, including following raw material：Aluminium 1200- 1850 parts, 12-19 parts of copper, 5-8 parts of vanadium, 2-6 parts of manganese, 4-8 parts of tin, 1-3 parts of chromium, 20-38 parts of rare earth element, titanium carbide 10-15 Part, 8-12 parts of tungsten carbide, 7-9 parts of tungsten silicide, 3-5 parts of tungsten, 15-20 parts of refining agent, 26-35 parts of grain refiner.
- 2. electronic product rare earth aluminium alloy according to claim 1, it is characterised in that in units of parts by weight, including Following raw material：1620 parts of aluminium, 16 parts of copper, 7 parts of vanadium, 5 parts of manganese, 7 parts of tin, 2 parts of chromium, 32 parts of rare earth element, 14 parts of titanium carbide, carbonization 10 parts of tungsten, 8 parts of tungsten silicide, 4 parts of tungsten, 18 parts of refining agent, 30 parts of grain refiner.
- 3. electronic product rare earth aluminium alloy according to claim 1 or 2, it is characterised in that the rare earth element is with weight Amount part is unit, including following raw material：7-9 parts of praseodymium, 2-6 parts of erbium, 1-3 parts of samarium, 3-5 parts of dysprosium, 5-8 parts of holmium, 2-7 parts of yttrium.
- 4. electronic product rare earth aluminium alloy according to claim 1 or 2, it is characterised in that the refining agent is with weight Part it is unit, including following raw material：10-20 parts of sodium chloride, 8-16 parts of sodium fluoride, 5-7 parts of graphite, 3-6 parts of calcirm-fluoride.
- 5. electronic product rare earth aluminium alloy according to claim 1 or 2, it is characterised in that the grain refiner with Parts by weight are unit, including following raw material：Among aluminium-silicon-manganese-copper -7-15 parts of lanthanum alloy intermediate, aluminium-titanium-carbon-cerium alloy 3-6 parts of body.
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