CN104313407A - High temperature resistant aluminum alloy and preparation method thereof - Google Patents
High temperature resistant aluminum alloy and preparation method thereof Download PDFInfo
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- CN104313407A CN104313407A CN201410544907.4A CN201410544907A CN104313407A CN 104313407 A CN104313407 A CN 104313407A CN 201410544907 A CN201410544907 A CN 201410544907A CN 104313407 A CN104313407 A CN 104313407A
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- aluminum alloy
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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
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
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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
- C22F1/043—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with silicon as the next major constituent
Abstract
The invention relates to a high temperature resistant aluminum alloy and a preparation method thereof. The aluminum alloy comprises following components by weight percent: 10.2-10.5% of silicon, 2.3-2.4% of copper, 0.8-1.0% of magnesium, 3.1-3.3% of nickel, 0.12-0.15% of titanium, 0.15-0.18% of tungsten, 0.01-0.03% of calcium, 0.1-0.3% of manganess, 0.01-0.02% of cobalt, 0.01-0.03% of tin, 0.03-0.05% of boron, 0.1-0.2% of vanadium, 0.01-0.015% of zirconium, 0.03-0.05% of cerium and the balance of aluminum. Due to the tungsten and zirconium, the high temperature resistance of the aluminum alloy can be improved, furthermore, the grain in the tissue of the aluminum alloy can be refined, and the surface flatness of the aluminum alloy can be improved; due to the addition of both boron and zirconium, the wear resistance of the aluminum alloy can be improved at high temperature.
Description
Technical field
The invention belongs to Al-alloy material field, refer to a kind of fire resistant aluminum alloy and preparation method thereof especially.
Background technology
The material that present engine piston uses is cast aluminium alloy, and this kind of cast aluminium alloy has in high temperature resistant, high pressure, high friction environment.And the over-all propertieies such as the Testing Tensile Strength at Elevated Temperature of the aluminum alloy materials now used, thermal conductivity, hardness have certain defect, the existing requirement to the superpower of engine, high rotating speed, low oil consumption can not be adapted to.
China number of patent application CN201110164489 discloses the technical scheme of a kind of cast aluminium alloy and preparation method thereof, in this technical scheme, use and comprise by weight percentage, the vanadium of the magnesium of the silicon of 11-13%, the copper of 2-4%, 0.5-1.2%, the nickel of 2-3.5%, the titanium of 0.08-0.18% and 0.1-0.2%, all the other are the material composition of aluminium.This technical scheme is improved the intensity of aluminium alloy, but in this technical scheme, aluminium alloy organization internal in high melt process can produce the bar-shaped of silicon-aluminium or columnar grain, and size of microcrystal is larger, the frictional coefficient of aluminum alloy surface is caused to strengthen thus, concerning having a certain impact the resistance to air loss between piston and cylinder sleeve and work-ing life of cylinder sleeve can being had influence on.
For above-mentioned deficiency, the material of contriver to engine piston improves, to overcome the deficiency of above-mentioned technology.
Summary of the invention
The object of this invention is to provide a kind of novel aluminum alloy and preparation method, pass through the technical program, the overgrowth of silicon-aluminium bar shape or columnar grain in aluminum alloy organization can be overcome, improve the even of aluminum alloy organization, improve aluminum alloy surface slickness, reduce frictional coefficient, extend the work-ing life of piston and cylinder sleeve.
The present invention is achieved by the following technical solutions:
A kind of fire resistant aluminum alloy, its composition is by weight percentage, and the boron of the tin of the manganese of the titanium of the magnesium of the silicon of 10.2-10.5%, the copper of 2.3-2.4%, 0.8-1.0%, the nickel of 3.1-3.3%, 0.12-0.15%, the calcium of 0.01-0.03%, 0.1-0.3%, the cobalt of 0.01-0.02%, 0.01-0.03%, the tungsten of 0.15-0.18%, 0.03-0.05%, the vanadium of 0.1-0.2%, the zirconium of 0.01-0.015%, the cerium of 0.03-0.05% and surplus are aluminium.
Described preparation method is:
Batching, be by weight percentage, the boron of the tin of the manganese of the titanium of the magnesium of the silicon of 10.2-10.5%, the copper of 2.3-2.4%, 0.8-1.0%, the nickel of 3.1-3.3%, 0.12-0.15%, the calcium of 0.01-0.03%, 0.1-0.3%, the cobalt of 0.01-0.02%, 0.01-0.03%, the tungsten of 0.15-0.18%, 0.03-0.05%, the vanadium of 0.1-0.2%, the zirconium of 0.01-0.015%, the cerium of 0.03-0.05% and surplus are that aluminium is got the raw materials ready
Melting, first puts into heat fused in smelting furnace by the copper through calculating, nickel and partinium; Add aluminium ingot, after aluminium ingot all melting, adding the silicon grain through calculating, heating to 850-900 DEG C and being incubated 1-2 hour; Add all the other materials, after having confirmed all fusings, carry out refining treatment; The aluminum alloy melt obtained carries out fast cooling 50-80 DEG C with 5-8 DEG C/sec be incubated 5-10 minute at 850-870 DEG C after, then is warming up to 850-870 DEG C, insulation 30-40 minute, and constant temperature is cast;
Cooling, point two stage coolings after casting, first stage carries out fast cooling to 110-130 DEG C after being cooled to 400-450 DEG C with 25-30 DEG C/min, forms piston blank;
Quench treatment, is incubated 1-2 hour after piston blank being heated to 550-650 DEG C, and carry out the quenching of water liquid, quenching velocity is not less than 2 DEG C/sec.
The present invention's beneficial effect is compared with the existing technology:
By in this technical program by casting before aluminum alloy melt carry out fast cooling 50-80 DEG C, the crystal grain of organizing of aluminum alloy melt can be made to generate appearance time-out, and then recovery temperature, some crystal grain is made to there will not be hypertrophy phenomenon, can the crystal grain of thinning microstructure inside while putting forward heavy alloyed resistance to elevated temperatures, improve surface flatness, and jointly improve wear resistance in the case of a high temperature by adding boron with zr element.
Embodiment
Describe concrete technical scheme of the present invention by the following examples in detail, should be understood that, following embodiment only can be used for explaining the present invention and can not being interpreted as being limitation of the present invention.
A kind of fire resistant aluminum alloy, its composition is by weight percentage, and the boron of the tin of the manganese of the titanium of the magnesium of the silicon of 10.2-10.5%, the copper of 2.3-2.4%, 0.8-1.0%, the nickel of 3.1-3.3%, 0.12-0.15%, the calcium of 0.01-0.03%, 0.1-0.3%, the cobalt of 0.01-0.02%, 0.01-0.03%, the tungsten of 0.15-0.18%, 0.03-0.05%, the vanadium of 0.1-0.2%, the zirconium of 0.01-0.015%, the cerium of 0.03-0.05% and surplus are aluminium.
Described titanium, tungsten, vanadium, zirconium, cerium add in the mode of titanium aluminum alloy, partinium, vananum, zirconium alloy and Ce-Al alloy respectively.
Described preparation method is:
Batching, be by weight percentage, the silicon of 10.2-10.5%, the copper of 2.3-2.4%, the magnesium of 0.8-1.0%, the nickel of 3.1-3.3%, the titanium of 0.12-0.15%, the calcium of 0.01-0.03%, the manganese of 0.1-0.3%, the cobalt of 0.01-0.02%, the tin of 0.01-0.03%, the tungsten of 0.15-0.18%, the boron of 0.03-0.05%, the vanadium of 0.1-0.2%, the zirconium of 0.01-0.015%, the cerium of 0.03-0.05% and surplus are that aluminium is got the raw materials ready, wherein, titanium, tungsten, vanadium, zirconium, cerium is respectively with titanium aluminum alloy, partinium, vananum, zirconium alloy and Ce-Al alloy are got the raw materials ready,
Melting, first puts into heat fused in smelting furnace by the copper through calculating, nickel and partinium; Add aluminium ingot, after aluminium ingot all melting, adding the silicon grain through calculating, heating to 850-900 DEG C and being incubated 1-2 hour; Add all the other materials, after having confirmed all fusings, carry out refining treatment; The aluminum alloy melt obtained carries out fast cooling 50-80 DEG C with 5-8 DEG C/sec be incubated 5-10 minute at 850-870 DEG C after, then is warming up to 850-870 DEG C, insulation 30-40 minute, and constant temperature is cast; Refining treatment at this place is prior art, is no longer described in detail at this;
Cooling, point two stage coolings after casting, first stage carries out fast cooling to 110-130 DEG C after being cooled to 400-450 DEG C with 25-30 DEG C/min, forms piston blank; At the uniform velocity lowering the temperature of the constant temperature casting carried out in the present invention and first stage is all the refinements of all even crystal grain in order to ensure weave construction inside;
Quench treatment, is incubated 1-2 hour after piston blank being heated to 550-650 DEG C, and carry out the quenching of water liquid, quenching velocity is not less than 2 DEG C/sec, is conducive to the crystal grain distribution of stabilizing tissue inside.
Embodiment 1
Described preparation method is:
Batching, be by weight percentage, the silicon of 10.2%, the copper of 2.3%, the magnesium of 0.8%, nickel, the titanium of 0.12%, calcium, the manganese of 0.1%, cobalt, the tin of 0.01%, tungsten, the boron of 0.03%, vanadium, the zirconium of 0.01%, the cerium of 0.03% and the surplus of 0.1% of 0.15% of 0.01% of 0.01% of 3.1% are that aluminium is got the raw materials ready, wherein, titanium, tungsten, vanadium, zirconium, cerium are got the raw materials ready with titanium aluminum alloy, partinium, vananum, zirconium alloy and Ce-Al alloy respectively;
Melting, first puts into heat fused in smelting furnace by the copper through calculating, nickel and partinium; Add aluminium ingot, after aluminium ingot all melting, adding the silicon grain through calculating, heating to 850-900 DEG C and being incubated 1-2 hour; Add all the other materials, after having confirmed all fusings, carry out refining treatment; The aluminum alloy melt obtained carries out fast cooling 50-80 DEG C with 5-8 DEG C/sec be incubated 5-10 minute at 850-870 DEG C after, then is warming up to 850-870 DEG C, and insulation 30-40 minute, constant temperature is cast
Cooling, point two stage coolings after casting, first stage carries out fast cooling to 110-130 DEG C after being cooled to 400-450 DEG C with 25-30 DEG C/min, forms piston blank;
Quench treatment, be incubated 2 hours after piston blank being heated to 550-650 DEG C, carry out the quenching of water liquid, quenching velocity is not less than 2 DEG C/sec.
In following examples of the application, be only that composition is different from embodiment 1, remaining step is identical, therefore, below in an example, only lists the compositing range of each material, eliminates remaining step.
Embodiment 2
Batching, be that the silicon of 10.5%, the copper of 2.4%, the magnesium of 1.0%, nickel, the titanium of 0.15%, calcium, the manganese of 0.3%, cobalt, the tin of 0.03%, tungsten, the boron of 0.05%, vanadium, the zirconium of 0.015%, the cerium of 0.05% and the surplus of 0.2% of 0.18% of 0.02% of 0.03% of 3.3% are that aluminium is got the raw materials ready by weight percentage.
Embodiment 3
Batching, be that the silicon of 10.3%, the copper of 2.35%, the magnesium of 0.92%, nickel, the titanium of 0.145%, calcium, the manganese of 0.15%, cobalt, the tin of 0.022%, tungsten, the boron of 0.035%, vanadium, the zirconium of 0.015%, the cerium of 0.035% and the surplus of 0.15% of 0.16% of 0.012% of 0.02% of 3.2% are that aluminium is got the raw materials ready by weight percentage.
Claims (2)
1. a fire resistant aluminum alloy, it is characterized in that: its composition is by weight percentage, the boron of the cobalt of the calcium of the titanium of the magnesium of the silicon of 10.2-10.5%, the copper of 2.3-2.4%, 0.8-1.0%, the nickel of 3.1-3.3%, 0.12-0.15%, the tungsten of 0.15-0.18%, 0.01-0.03%, the manganese of 0.1-0.3%, 0.01-0.02%, the tin of 0.01-0.03%, 0.03-0.05%, the vanadium of 0.1-0.2%, the zirconium of 0.01-0.015%, the cerium of 0.03-0.05% and surplus are aluminium.
2. a fire resistant aluminum alloy preparation method, is characterized in that:
Batching, be that the boron of the tin of the manganese of the titanium of the magnesium of the silicon of 10.2-10.5%, the copper of 2.3-2.4%, 0.8-1.0%, the nickel of 3.1-3.3%, 0.12-0.15%, the calcium of 0.01-0.03%, 0.1-0.3%, the cobalt of 0.01-0.02%, 0.01-0.03%, the tungsten of 0.15-0.18%, 0.03-0.05%, the vanadium of 0.1-0.2%, the zirconium of 0.01-0.015%, the cerium of 0.03-0.05% and surplus are that aluminium is got the raw materials ready by weight percentage;
Melting, first puts into heat fused in smelting furnace by the copper through calculating, nickel and partinium; Add aluminium ingot, after aluminium ingot all melting, adding the silicon grain through calculating, heating to 850-900 DEG C and being incubated 1-2 hour; Add all the other materials, after having confirmed all fusings, carry out refining treatment; The aluminum alloy melt obtained carries out fast cooling 50-80 DEG C with 5-8 DEG C/sec be incubated 5-10 minute at 850-870 DEG C after, then is warming up to 850-870 DEG C, insulation 30-40 minute, and constant temperature is cast;
Cooling, point two stage coolings after casting, first stage carries out fast cooling to 110-130 DEG C after being cooled to 400-450 DEG C with 25-30 DEG C/min, forms piston blank;
Quench treatment, is incubated 1-2 hour after piston blank being heated to 550-650 DEG C, and carry out the quenching of water liquid, quenching velocity is not less than 2 DEG C/sec.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105238967A (en) * | 2015-11-12 | 2016-01-13 | 薛亚红 | Aluminum alloy and preparation method thereof |
| CN108277400A (en) * | 2018-02-07 | 2018-07-13 | 兰州理工大学 | A kind of wear-resisting type aluminium alloy material preparation method for material |
| CN111534727A (en) * | 2020-05-07 | 2020-08-14 | 江苏兆铝金属制品有限公司 | Special aluminum alloy material for high-strength car lamp and preparation method thereof |
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Patent Citations (5)
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| CN101445886A (en) * | 2008-12-31 | 2009-06-03 | 东北轻合金有限责任公司 | High-strength high-toughness aluminum alloy pre-tensioned thick plate and preparation method thereof |
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Application publication date: 20150128 |