CN106834772B - A kind of aluminium-silicon-tantalum intermediate alloy and preparation method thereof - Google Patents
A kind of aluminium-silicon-tantalum intermediate alloy and preparation method thereof Download PDFInfo
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- CN106834772B CN106834772B CN201710120405.2A CN201710120405A CN106834772B CN 106834772 B CN106834772 B CN 106834772B CN 201710120405 A CN201710120405 A CN 201710120405A CN 106834772 B CN106834772 B CN 106834772B
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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
- C22C1/02—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
- C22C1/06—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
- 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
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0047—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents
- C22C32/0078—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents only silicides
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Abstract
A kind of aluminium silicon tantalum intermediate alloy and preparation method thereof.The present invention is aluminium silicon tantalum intermediate alloy, and comprising three kinds of aluminium, silicon, tantalum essential elements, the mass percent of each component is respectively：Aluminium 60.00% 95.00%, silicon 1.00% 30.00%, tantalum 0.50% 10.00%.The preparation process of the intermediate alloy is simple, at low cost, and suitable for industrialized production, prepared aluminium silicon tantalum alloy intermediate alloy, which mutually has silicon in transcocrystallized Al-Si alloy, breeds metamorphism.
Description
Technical field
The invention belongs to metal material field, more particularly to a kind of aluminium-silicon-tantalum intermediate alloy and preparation method thereof.
Background technology
Aluminium alloy is resourceful because light-weight, good combination property, so in machinery, communications and transportation, space flight and war industry
The application in high-technology fields is waited to increase year by year.The aluminium alloy of high quality is produced, control ingot structure is highly important.Especially
It is that the raising of the tissue and performance requirement of transcocrystallized Al-Si alloy is also more and more urgent.Improve transcocrystallized Al-Si alloy
Can, it needs to carry out fine degenerate processing to aluminium alloy melt, the Metamorphism treatment mutually appropriate to silicon can improve the tissue of aluminium alloy
And its mechanical property is greatly improved.At present, at home and abroad in industrial production mainly silicon is carried out by adding the method for alterant
The Metamorphism treatment of phase, widely used at present is that Sr goes bad, i.e. Sr goes bad usually to be added in the form of Al-10Sr intermediate alloys
Enter, fusion range is easy to be absorbed by molten aluminum between 654-770 DEG C, and the rate of recovery is easily controlled up to 70%-80%, addition
System, which, which is added in aluminum melt, Eutectic Silicon in Al-Si Cast Alloys to be made to be converted into threadiness by sheet, and incubation period of going bad is 30-
40min, it is rotten to be valid up to 5-7h, it can remelting repeatedly；Pernicious gas is not generated in Sr metamorphic processes simultaneously, does not corrode and sets
It is standby.But aluminium alloy melt should not use chlorine when making alterant with Sr or villaumite carries out refining treatment, and the easy scaling loss of Sr reduces Sr
Modification effect, preferably with logical argon gas, nitrogen or vacuum degassed method refine.Sr modified alloy melts air-breathing tendency increases
The defects of adding, significantly improving the pinhole rate of casting, drop low-alloyed density, stomata and oxide inclusion, is serious, by melt treatment
Still there is Al afterwards2SrO3It is mingled with, modification effect reduces.In addition, the price of Sr is relatively high, modification effect is to casting cooling velocity
It is very sensitive.So this also limits the application field of the intermediate alloy.For this purpose, by a large amount of experiment, invent a kind of new
The intermediate alloy of type mutually goes bad as transcocrystallized Al-Si alloy tissue silicon and breeds use.
Invention content
Rotten hypereutectic al-si conjunction can be effectively bred it is an object of the invention to overcome the deficiencies of the prior art and provide a kind of
Aluminium-silicon-tantalum intermediate alloy of silicon phase morphology in gold, while a kind of industrial preparation simple for process, at low cost, suitable is provided
Technique and method.
The present invention is achieved in the following ways：
A kind of aluminium-silicon-tantalum intermediate alloy, comprising three kinds of aluminium, silicon, tantalum essential elements, the mass percent of each component is distinguished
It is：Aluminium 60.00%-95.00%, silicon 1.00%-30.00%, tantalum 0.50%-10.00%；Aluminium ingot purity >=99.9%, in the intermediate alloy
Dispersed precipitate micron-sized TaSi2Particle, and quantity is more, tantalum element can be added with aluminium-tantalum intermediate alloy or simple metal tantalum
Enter.
The preparation method of above-mentioned aluminium-silicon-tantalum intermediate alloy, feature comprise the steps of：
The preparation method of aluminium-silicon-tantalum intermediate alloy is：Fine aluminium is placed in resistance furnace first and melts and be warming up to 800-
1200 DEG C, the metal tantalum of certain mass or aluminium-tantalum intermediate alloy, HIGH-PURITY SILICON, Ran Houyong are sequentially added in the aluminum melt of fusing
Graphite rod is sufficiently stirred to be placed in resistance furnace and keep the temperature, and is stirred once every 10min-15min graphite rods；Melt to be mixed is protected
Temperature reaches the predetermined time, blend melt is stood 5min, press-in carbon trichloride is refined and skimmed, finally pours into blend melt
Wire rod is made in ingot or continuous casting.
Carbon trichloride described above dries moisture in drying box；By the mold used and used tool brushing of skimming
One coating prevents the pollution of Impurity Fe.Graphite crucible is selected to carry out melting in whole preparation process, select graphite rod
Stirring, it is therefore an objective to prevent the pollution of other impurities element.
Specific embodiment
Two most preferred embodiments of the present invention are given below.
Embodiment 1
As described above preparation process and method prepare Al-5Si-Ta intermediate alloys process it is as follows：
（1）Raw material prepares：Aluminium ingot, HIGH-PURITY SILICON, metal tantalum, carbon trichloride etc., wherein aluminium ingot purity >=99.9%.
（2）The intermediate alloy of 1kg is prepared, required raw material, the burn out rate of aluminium are weighed than Si/Ta=5/1 according to mass fraction
For 2-3%.
（3）Carbon trichloride is placed in drying box, 1h is heated at 100 DEG C, to remove moisture.
（4）By required mold, one coating of Slag Tool brushing, the pollution of the impurity elements such as Fe is prevented, was being prepared
Melting is carried out using graphite crucible in journey, graphite rod is selected to be stirred, prevents the pollution of other impurities element.
（5）Aluminium ingot is melted using well formula resistance furnace and is heated to 850 DEG C, after aluminium ingot is completely melt, will first have been weighed
Metal tantalum wrapped with aluminium-foil paper, and be put into constantly stirred in aluminum melt with graphite rod after stand 5min；Then it adds in and has claimed
The HIGH-PURITY SILICON of amount is placed in resistance furnace with graphite rod stirring and kept the temperature, and temperature is set as 800 DEG C, primary every 15min stirrings,
It is carried out with ensureing that the reaction was complete；Blend melt keeps the temperature 1h in resistance furnace, adds in the carbon trichloride progress for accounting for gross mass 2-3%wt
Degassing processing is refined, with Slag Tool slag is pulled out after standing 5min, finally by melt cast ingot.
Embodiment 2
As described above preparation process and method prepare Al-10Si-2Ta intermediate alloys process it is as follows：
（1）Raw material prepares：Aluminium ingot, HIGH-PURITY SILICON, metal tantalum, carbon trichloride etc., wherein aluminium ingot purity >=99.9%.
（2）The intermediate alloy of 1kg is prepared, required raw material, the scaling loss of aluminium are weighed than Si/Ta=10/2 according to mass fraction
Rate is 2-3%.
（3）Carbon trichloride is placed in drying box, 1h is heated at 100 DEG C, to remove moisture.
（4）By required mold, one coating of Slag Tool brushing, the pollution of the impurity elements such as Fe is prevented, was being prepared
Melting is carried out using graphite crucible in journey, graphite rod is selected to be stirred, prevents the pollution of other impurities element.
（5）Aluminium ingot is melted using well formula resistance furnace, after aluminium ingot is completely melt and add be warming up to 950 DEG C, will first claim
Weight metal tantalum wrapped with aluminium-foil paper, and be put into constantly stirred in aluminum melt with graphite rod after stand 5min；Then it adds in
The HIGH-PURITY SILICON weighed is placed in resistance furnace with graphite rod stirring and kept the temperature, and temperature is set as 850 DEG C, and one is stirred every 15min
It is secondary, it is carried out with ensureing that the reaction was complete；Blend melt keeps the temperature 30min in resistance furnace, adds in the hexachloroethanc for accounting for gross mass 2-3%wt
Alkane carries out refining degassing processing, stands and pulls out slag with Slag Tool after 5min, finally by melt cast ingot.
Claims (1)
1. a kind of preparation method of aluminium-silicon-tantalum alloy, aluminium-silicon-tantalum alloy includes three kinds of aluminium, silicon, tantalum essential elements, each component
Mass percent be respectively：Aluminium 60.00%-95.00%, silicon 1.00%-30.00%, tantalum 0.50%-10.00%；It is characterized in that it prepares
Method includes the following steps：
（1）Carbon trichloride is placed in drying box, and 1h is heated at 100 DEG C；
（2）By required mold, one coating of Slag Tool brushing；
（3）Fine aluminium is placed in resistance furnace using well formula resistance furnace and is melted, is warming up to 800-1200 DEG C, after aluminium ingot is completely melt,
First the metal tantalum weighed is wrapped with aluminium-foil paper, and be put into constantly stirred in aluminum melt with graphite rod after stand 5min, so
The HIGH-PURITY SILICON weighed is added in afterwards；
（4）It is placed in resistance furnace and keeps the temperature, be placed in resistance furnace in 800-900 DEG C of heat preservation, graphite rod 15min stirrings are once；
（5）Blend melt keeps the temperature 1h in resistance furnace, and the carbon trichloride that addition accounts for gross mass 2-3%wt carries out refining degassing processing,
Slag is pulled out with Slag Tool after standing 5min, finally by melt cast ingot.
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| CN109468479A (en) * | 2018-12-21 | 2019-03-15 | 济南大学 | A kind of aluminium-tantalum-carbon intermediate alloy and its preparation method and application |
| CN113817928A (en) * | 2021-09-09 | 2021-12-21 | 合肥工业大学 | Low-temperature casting preparation method and application of Al-Ta intermediate alloy |
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| CN103469022A (en) * | 2013-08-16 | 2013-12-25 | 南昌大学 | Aluminum-silicon-samarium casting aluminum alloy and preparation method thereof |
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| CN103469022A (en) * | 2013-08-16 | 2013-12-25 | 南昌大学 | Aluminum-silicon-samarium casting aluminum alloy and preparation method thereof |
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