CN104404314A - Cast aluminum alloy and preparation method - Google Patents
Cast aluminum alloy and preparation method Download PDFInfo
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- CN104404314A CN104404314A CN201410674788.4A CN201410674788A CN104404314A CN 104404314 A CN104404314 A CN 104404314A CN 201410674788 A CN201410674788 A CN 201410674788A CN 104404314 A CN104404314 A CN 104404314A
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
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Abstract
The invention provides cast aluminum alloy and a preparation method. The cast aluminum alloy comprises, by weight, 6.55-8.25% of silicon, 0.12-0.32% of manganese, 0.24-0.42% of nickel, 0.15-0.18% of magnesium, 1.15-1.35% of copper, 0.86-1.15% of iron, 0.22-0.35% of tantalum, 0.15-0.25% of chromium, 0.01-0.02% of zirconium, 0.01-0.02% of strontium, 0.35-0.45% of titanium, 0.01-0.03% of boron, 0.01-0.03% of vanadium, 0.01-0.03% of tin, 0.001-0.003% of bismuth and the balance of aluminum. By adding tantalum, strontium, titanium, zirconium, vanadium and boron into the aluminum alloy, the ductility of the aluminum alloy can be improved and the anti-corrosion performance of the aluminum alloy is improved; the formation of silicon and aluminum bar-shaped crystalline grains in the aluminum alloy is prevented, and fine crystalline grains are formed; the situation that the crystalline grains grow excessively again as a result of a temperature rise in the high-pressure casting process later cannot occur.
Description
Technical field
The invention belongs to field of aluminum alloys, refer to a kind of material and the preparation method that cast thin aluminium alloy especially.
Technical background
The density of fine aluminium is little, erosion resistance is high, fusing point is low, is approximately 660 DEG C, and has very high plasticity, is easy to processing.But the intensity of fine aluminium is low, in order to the scope of application of aluminium can be improved, by long-term research, while intensity can being improved after adding some other element obtain aluminium alloy in fine aluminium, still keep the corrosion resistance nature of fine aluminium, high-ductility performance.And when with the addition of some element as titanium metal, its intensity exceedes a lot of steel alloy, and light specific gravity, be widely used in machinofacture, aircraft industry, automobile and building materials field with alternative iron or iron alloy, to realize alleviating deadweight and reducing energy consumption.
The intensity of aluminium alloy is high, exceed the intensity of many steel alloys, but when casting, when particularly processing thin sheet material, also there is following defect, is exactly in castingprocesses, because in high-pressure casting process, can cause the structural modification in aluminum alloy organization, and cause aluminum alloy surface to occur the phenomenons such as crackle, this phenomenon result in the performance of product and defect appears in corrosion resistance nature.
Summary of the invention
The object of this invention is to provide a kind of for high-pressure casting aluminium alloy and preparation method, by the technical program, its aluminum alloy plate materials produced is thinner, and the feature such as stable performance flawless.
The present invention is achieved by the following technical solutions:
A kind of cast aluminium alloy, it is characterized in that: its composition is by weight percentage, 6.55-8.25% silicon, 0.12-0.32% manganese, 0.24-0.42% nickel, 0.15-0.18% magnesium, 1.15-1.35% copper, 0.86-1.15% iron, 0.22-0.35% tantalum, 0.15-0.25% chromium, 0.01-0.02% zirconium, 0.01-0.02% strontium, 0.35-0.45% titanium, 0.01-0.03% boron, 0.01-0.03% vanadium, 0.01-0.03% tin, 0.001-0.003% bismuth, surplus is aluminium.
Further, this cast aluminium alloy respectively forms, 7.05-8.00% silicon, 0.25-0.30% manganese, 0.30-0.35% nickel, 0.16-0.18% magnesium, 1.20-1.30% copper, 0.90-1.10% iron, 0.25-0.30% tantalum, 0.18-0.24% chromium, 0.01-0.018% zirconium, 0.01-0.015% strontium, 0.40-0.43% titanium, 0.01-0.02% boron, 0.01-0.02% vanadium, 0.01-0.025% tin, 0.001-0.002% bismuth, surplus is aluminium.
Further, described strontium, zirconium, titanium, vanadium, bismuth add in the mode of strontium aluminium alloy, zirconium alloy, titanium aluminum alloy, vananum and bismuth aluminium alloy respectively.
Further, a kind of preparation method of cast aluminium alloy, is characterized in that:
Batching, be by weight percentage, 6.55-8.25% silicon, 0.12-0.32% manganese, 0.24-0.42% nickel, 0.15-0.18% magnesium, 1.15-1.35% copper, 0.86-1.15% iron, 0.22-0.35% tantalum, 0.15-0.25% chromium, 0.01-0.02% zirconium, 0.01-0.02% strontium, 0.35-0.45% titanium, 0.01-0.03% boron, 0.01-0.03% vanadium, 0.01-0.03% tin, 0.001-0.003% bismuth, surplus is that aluminium is prepared burden; Wherein tantalum, strontium, zirconium, titanium, vanadium will calculate the amount of tantalum aluminium alloy, strontium aluminium alloy, zirconium alloy, titanium aluminum alloy, vananum, and the amount of last aluminium;
Melting, the half and other material that first add the amount of the aluminium by above-mentioned charge calculation carry out melting, fusion change into liquid after add remaining aluminium and proceed melting and cast after being incubated 45-80 minute;
Tempering, remains a constant speed and is tempered to 200-240 DEG C after being cooled to 150-180 DEG C and is incubated 2-3 hour, naturally cooling.
Further, described cooling rate maintains 38-40 DEG C/min.
Further, above-mentioned aluminium alloy is adopted to carry out the required sheet material of high-pressure casting preparation.
The present invention's beneficial effect is compared with the existing technology:
1, by adding strontium, titanium, zirconium, vanadium, boron in aluminium alloy, the formation forming silicon-aluminium bar-like grains in aluminium alloy can be suppressed, and form tiny crystal grain.
2, add rare metal tantalum, alloy ductility can be increased, and promote aluminium conjunction corrosion resistance nature.
3, by preparation method of the present invention, in casting cycle, made the crystal grain in alloy grow fully, therefore in the high-pressure casting process in later stage, crystal grain overgrowth again can not have been caused because of the rising of temperature.
Embodiment
Describe concrete technical scheme of the present invention in detail below by way of specific embodiment, should be understood that, it is limitation of the present invention that following embodiment only can be used for explaining the present invention and can not being used for explanation.
A kind of cast aluminium alloy, it is characterized in that: its composition is by weight percentage, 6.55-8.25% silicon, 0.12-0.32% manganese, 0.24-0.42% nickel, 0.15-0.18% magnesium, 1.15-1.35% copper, 0.86-1.15% iron, 0.22-0.35% tantalum, 0.15-0.25% chromium, 0.01-0.02% zirconium, 0.01-0.02% strontium, 0.35-0.45% titanium, 0.01-0.03% boron, 0.01-0.03% vanadium, 0.01-0.03% tin, 0.001-0.003% bismuth, surplus is aluminium.
As further improvement, the material of the thin aluminium alloy of described casting, its composition is by weight percentage, 7.05-8.00% silicon, 0.25-0.30% manganese, 0.30-0.35% nickel, 0.16-0.18% magnesium, 1.20-1.30% copper, 0.90-1.10% iron, 0.25-0.30% tantalum, 0.18-0.24% chromium, 0.01-0.018% zirconium, 0.01-0.015% strontium, 0.40-0.43% titanium, 0.01-0.02% boron, 0.01-0.02% vanadium, 0.01-0.025% tin, 0.001-0.002% bismuth, surplus is aluminium.
Described strontium, zirconium, titanium, vanadium, bismuth add in the mode of strontium aluminium alloy, zirconium alloy, titanium aluminum alloy, vananum and bismuth aluminium alloy respectively.
Described preparation method is:
Batching, be by weight percentage, 6.55-8.25% silicon, 0.12-0.32% manganese, 0.24-0.42% nickel, 0.15-0.18% magnesium, 1.15-1.35% copper, 0.86-1.15% iron, 0.22-0.35% tantalum, 0.15-0.25% chromium, 0.01-0.02% zirconium, 0.01-0.02% strontium, 0.35-0.45% titanium, 0.01-0.03% boron, 0.01-0.03% vanadium, 0.01-0.03% tin, 0.001-0.003% bismuth, surplus is that aluminium is prepared burden; Wherein tantalum, strontium, zirconium, titanium, vanadium, bismuth will calculate the amount of tantalum aluminium alloy, strontium aluminium alloy, zirconium alloy, titanium aluminum alloy, vananum, bismuth aluminium alloy, and the amount of last aluminium;
Melting, the half and other material that first add the amount of the aluminium by above-mentioned charge calculation carry out melting, fusion change into liquid after add remaining aluminium and proceed melting and cast after being incubated 45-80 minute;
Tempering, remains a constant speed and is tempered to 200-240 DEG C after being cooled to 150-180 DEG C and is incubated 2-3 hour, naturally cooling.
Further, described cooling rate maintains 38-40 DEG C/min.
Adopt above-mentioned aluminium alloy to carry out high-pressure casting and obtain required sheet material.
Embodiment 1
Described preparation method is:
Batching, be by weight percentage, the silicon of 6.55%, the manganese of 0.12%, 0.24% nickel, the magnesium of 0.15%, copper, the iron of 0.86%, tantalum, the chromium of 0.15%, zirconium, the strontium of 0.01%, titanium, the boron of 0.01%, vanadium, the tin of 0.01%, the bismuth of 0.001% and the surplus of 0.01% of 0.35% of 0.01% of 0.22 of 1.15% be that aluminium is prepared burden; Wherein tantalum, strontium, zirconium, titanium, vanadium, bismuth will calculate the amount of tantalum aluminium alloy, strontium aluminium alloy, zirconium alloy, titanium aluminum alloy, vananum, bismuth aluminium alloy, and the amount of last aluminium;
Melting, the half and other material that first add the amount of the aluminium by above-mentioned charge calculation carry out melting, fusion change into liquid after add remaining aluminium and proceed melting and cast after being incubated 45 minutes;
Tempering, keep cooling rate maintain 38 DEG C/min be at the uniform velocity cooled to 150-170 DEG C after be tempered to 200-220 DEG C and be incubated 2 hours, naturally cooling.
Adopt above-mentioned aluminium alloy to carry out high-pressure casting and obtain required sheet material.
Embodiment 2
Described preparation method is:
Batching, be by weight percentage, the silicon of 8.25%, the manganese of 0.32%, 0.42% nickel, the magnesium of 0.18%, copper, the iron of 1.35%, tantalum, the chromium of 0.25%, zirconium, the strontium of 0.02%, titanium, the boron of 0.03%, vanadium, the tin of 0.03%, the bismuth of 0.003% and the surplus of 0.03% of 0.45% of 0.02% of 0.35% of 1.35% be that aluminium is prepared burden; Wherein tantalum, strontium, zirconium, titanium, vanadium, bismuth will calculate the amount of tantalum aluminium alloy, strontium aluminium alloy, zirconium alloy, titanium aluminum alloy, vananum, bismuth aluminium alloy, and the amount of last aluminium;
Melting, the half and other material that first add the amount of the aluminium by above-mentioned charge calculation carry out melting, fusion change into liquid after add remaining aluminium and proceed melting and cast after being incubated 60 minutes;
Tempering, keep cooling rate maintain 39 DEG C/min be at the uniform velocity cooled to 160-180 DEG C after be tempered to 200-220 DEG C and be incubated 2.5 hours, naturally cooling.
Adopt above-mentioned aluminium alloy to carry out high-pressure casting and obtain required sheet material.
Embodiment 3
Described preparation method is:
Batching, be by weight percentage, the silicon of 7.50%, the manganese of 0.25%, 0.30% nickel, the magnesium of 0.16%, copper, the iron of 1.08%, tantalum, the chromium of 0.20%, zirconium, the strontium of 0.015%, titanium, the boron of 0.015%, vanadium, the tin of 0.02%, the bismuth of 0.0015% and the surplus of 0.015% of 0.40% of 0.015% of 0.30% of 1.25% be that aluminium is prepared burden; Wherein tantalum, strontium, zirconium, titanium, vanadium, bismuth will calculate the amount of tantalum aluminium alloy, strontium aluminium alloy, zirconium alloy, titanium aluminum alloy, vananum, bismuth aluminium alloy, and the amount of last aluminium;
Melting, the half and other material that first add the amount of the aluminium by above-mentioned charge calculation carry out melting, fusion change into liquid after add remaining aluminium and proceed melting and cast after being incubated 80 minutes:
Tempering, keep cooling rate maintain 40 DEG C/min be at the uniform velocity cooled to 170-180 DEG C after be tempered to 200-220 DEG C and be incubated 3 hours, naturally cooling.
Adopt above-mentioned aluminium alloy to carry out high-pressure casting and obtain required sheet material.
Finally it should be noted that, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (6)
1. a cast aluminium alloy, it is characterized in that: its composition is by weight percentage, 6.55-8.25% silicon, 0.12-0.32% manganese, 0.24-0.42% nickel, 0.15-0.18% magnesium, 1.15-1.35% copper, 0.86-1.15% iron, 0.22-0.35% tantalum, 0.15-0.25% chromium, 0.01-0.02% zirconium, 0.01-0.02% strontium, 0.35-0.45% titanium, 0.01-0.03% boron, 0.01-0.03% vanadium, 0.01-0.03% tin, 0.001-0.003% bismuth, surplus is aluminium.
2. cast aluminium alloy as claimed in claim 1, it is characterized in that: its composition is by weight percentage, 7.05-8.00% silicon, 0.25-0.30% manganese, 0.30-0.35% nickel, 0.16-0.18% magnesium, 1.20-1.30% copper, 0.90-1.10% iron, 0.25-0.30% tantalum, 0.18-0.24% chromium, 0.01-0.018% zirconium, 0.01-0.015% strontium, 0.40-0.43% titanium, 0.01-0.02% boron, 0.01-0.02% vanadium, 0.01-0.025% tin, 0.001-0.002% bismuth, surplus is aluminium.
3. cast aluminium alloy according to claim 1, is characterized in that: described tantalum, strontium, zirconium, titanium, vanadium, bismuth add in the mode of tantalum aluminium alloy, strontium aluminium alloy, zirconium alloy, titanium aluminum alloy, vananum and bismuth aluminium alloy respectively.
4. a preparation method for cast aluminium alloy, is characterized in that:
Batching, be by weight percentage, 6.55-8.25% silicon, 0.12-0.32% manganese, 0.24-0.42% nickel, 0.15-0.18% magnesium, 1.15-1.35% copper, 0.86-1.15% iron, 0.22-0.35% tantalum, 0.15-0.25% chromium, 0.01-0.02% zirconium, 0.01-0.02% strontium, 0.35-0.45% titanium, 0.01-0.03% boron, 0.01-0.03% vanadium, 0.01-0.03% tin, 0.001-0.003% bismuth, surplus is that aluminium is prepared burden; Wherein tantalum, strontium, zirconium, titanium, vanadium will calculate the amount of tantalum aluminium alloy, strontium aluminium alloy, zirconium alloy, titanium aluminum alloy, vananum, and the amount of last aluminium;
Melting, the half and other material that first add the amount of the aluminium by above-mentioned charge calculation carry out melting, fusion change into liquid after add remaining aluminium and proceed melting and cast after being incubated 45-80 minute;
Tempering, remains a constant speed and is tempered to 200-240 DEG C after being cooled to 150-180 DEG C and is incubated 2-3 hour, naturally cooling.
5. the preparation method of cast aluminium alloy according to claim 4, is characterized in that: described cooling rate maintains 38-40 DEG C/min.
6. the preparation method of cast aluminium alloy according to claim 4, is characterized in that: adopt above-mentioned aluminium alloy to carry out high-pressure casting and obtain required sheet material.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105132762A (en) * | 2015-09-29 | 2015-12-09 | 济南大学 | Al-Si-Mg-Cu-Ta alloy and preparation method thereof |
| CN105154729A (en) * | 2015-09-29 | 2015-12-16 | 济南大学 | Cast aluminum-zinc-magnesium-copper-tantalum alloy and manufacturing method thereof |
| CN108486427A (en) * | 2018-03-27 | 2018-09-04 | 宁波优适捷传动件有限公司 | A kind of Novel aluminum alloy material and preparation method thereof |
| CN110387491A (en) * | 2019-08-08 | 2019-10-29 | 青岛诚恩智造精工科技有限公司 | Novel liquid forging and stamping aluminium alloy and preparation method thereof |
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| CN103014435A (en) * | 2012-11-26 | 2013-04-03 | 姚富云 | Material used for casting thin aluminium alloy and preparation method thereof |
| CN103014441A (en) * | 2012-11-26 | 2013-04-03 | 姚芸 | Preparation method of material used for casting thin aluminium alloy at high pressure |
| CN103014438A (en) * | 2012-11-26 | 2013-04-03 | 姚芸 | Material used for casting thin aluminium alloy at high pressure and preparation method thereof |
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Patent Citations (4)
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| CN103014437A (en) * | 2012-11-26 | 2013-04-03 | 姚芸 | Material used for casting thin aluminium alloy at high pressure |
| CN103014435A (en) * | 2012-11-26 | 2013-04-03 | 姚富云 | Material used for casting thin aluminium alloy and preparation method thereof |
| CN103014441A (en) * | 2012-11-26 | 2013-04-03 | 姚芸 | Preparation method of material used for casting thin aluminium alloy at high pressure |
| CN103014438A (en) * | 2012-11-26 | 2013-04-03 | 姚芸 | Material used for casting thin aluminium alloy at high pressure and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105132762A (en) * | 2015-09-29 | 2015-12-09 | 济南大学 | Al-Si-Mg-Cu-Ta alloy and preparation method thereof |
| CN105154729A (en) * | 2015-09-29 | 2015-12-16 | 济南大学 | Cast aluminum-zinc-magnesium-copper-tantalum alloy and manufacturing method thereof |
| CN108486427A (en) * | 2018-03-27 | 2018-09-04 | 宁波优适捷传动件有限公司 | A kind of Novel aluminum alloy material and preparation method thereof |
| CN110387491A (en) * | 2019-08-08 | 2019-10-29 | 青岛诚恩智造精工科技有限公司 | Novel liquid forging and stamping aluminium alloy and preparation method thereof |
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Application publication date: 20150311 |