CN105755330B - A kind of superplastic aluminum alloy sheet material and preparation method thereof - Google Patents

A kind of superplastic aluminum alloy sheet material and preparation method thereof Download PDF

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Publication number
CN105755330B
CN105755330B CN201610283633.7A CN201610283633A CN105755330B CN 105755330 B CN105755330 B CN 105755330B CN 201610283633 A CN201610283633 A CN 201610283633A CN 105755330 B CN105755330 B CN 105755330B
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aluminium alloy
aluminium
sheet
temperature
aluminum alloy
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CN105755330A (en
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李翔光
王德细
俞开升
陈春喜
于丹
敖四海
王昌明
程国栋
李伟
梁益龙
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Guizhou Aerospace Fenghua Precision Equipment Co Ltd
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Guizhou Aerospace Fenghua Precision Equipment Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making alloys
    • C22C1/02Making alloys by melting
    • C22C1/026Alloys based on aluminium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04Changing 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 provides a kind of superplastic aluminum alloy sheet material, belong to aluminium alloy smelting technical field, the sheet material is prepared from by the raw material of following percetage by weight:5~10% Mn, 2 4% Mg, 2~4% Zn, 0.5 1% Cu, 0.01 0.1% Fe, 0.01 0.1% Si, 0.001 0.01% Li, 0.001 0.01% Sb, 0.001 0.01% Ce, 0.001 0.01% Gd, 0.001 0.01% Y, remaining is Al.The aluminum alloy plate materials that the present invention is obtained have High-temperature Superplasticity energy, sheet material extends laterally rate up to 235~245%, Longitudinal extending rate is up to 252~264%, energy one step forming goes out complex-shaped workpiece, and shape no resilience, dimensionally stable, machining deviation is less than 2.2 ‰, and tolerance is close with precision machining.In addition, the preparation method meets environmental protection processing, the shaping deflection more more complicated shaping demand of big, shape, and import like product can be substituted completely disclosure satisfy that.

Description

A kind of superplastic aluminum alloy sheet material and preparation method thereof
Technical field
The invention belongs to aluminium alloy smelting technical field, it is related to a kind of superplastic aluminum alloy sheet material and preparation method thereof.
Background technology
The energy, environmental protection, safety are problems that world today's auto industry faces, automotive light weight technology be reduction energy resource consumption, Improve automobile fuel ecomomy, reduce the effective way of environmental pollution.Aluminium alloy is as traditional metal material, because of its density Small, specific strength is high, corrosion-resistant, density is small, and shock resistance is good, easy surface coloring, good formability, and high A series of good characteristics such as recycling, reproducibility, the preferable material as automotive light weight technology.
With the development of modern industry and casting technology, to aluminium alloy, such as there is high intensity, high-ductility, excellent resistance to The aluminium alloy of mill property and corrosion resistance, demand is increasing.By the development of decades, high-strength aluminum alloy has been formed completely Series, performance tends towards stability, and production method is increasingly perfect, as alloy system indispensable in Material Field.But it is high at present The plasticity of strength aluminium alloy is relatively low, can not typically bear larger deflection, so that its application is limited by larger.It is many Need more than the important component of high-ductility using wrought aluminium alloy manufacture.But although wrought aluminium alloy has preferable high-ductility, But its process requires high to equipment and moulds of industrial equipment, and process is more, therefore the production cycle is long, and cost is very high.By contrast, cast Making aluminium alloy has cheap, cast structure isotropism, easily produces complex-shaped part, both can with single-piece production or Many advantages, such as can producing in enormous quantities.
The content of the invention
In order to solve the above technical problems, the invention provides a kind of superplastic aluminum alloy sheet material and preparation method thereof.
The present invention is achieved by the following technical programs.
A kind of superplastic aluminum alloy sheet material that the present invention is provided, the sheet material is prepared by the raw material of following percetage by weight Form:5~10% Mn, 2-4% Mg, 2~4% Zn, 0.5-1% Cu, 0.01-0.1% Fe, 0.01-0.1%'s Si, 0.001-0.01% Li, 0.001-0.01% Sb, 0.001-0.01% Ce, 0.001-0.01% Gd, 0.001- 0.01% Y, remaining is Al.
Further, the sheet material is prepared from by the raw material of following percetage by weight:6% Mn, 3% Mg, 3% Zn, 0.8% Cu, 0.05% Fe, 0.05% Si, 0.004% Li, 0.007% Sb, 0.002% Ce, 0.006% Gd, 0.009% Y, remaining is Al.
Meanwhile, present invention also offers a kind of superplastic aluminum alloy sheet material and preparation method thereof, comprise the following steps:
1) smelting furnace is preheated into 15~25min, fine aluminium ingot is delivered into stove, 700 DEG C~730 DEG C, after fusing are heated to 20~30min of aluminium liquid constant temperature;Fine aluminium ingot is set fully to melt, then into aluminium liquid, addition silicon, manganese melt successively, then cool the temperature to 660 DEG C~700 DEG C, magnesium is completely forced into aluminium alloy;
2) component of remaining alloy is added in aluminium alloy, is incubated 20~30min, then raises temperature to 750 DEG C~800 DEG C, refining agent is added in aluminium alloy, 30~40min is incubated;
3) molten mass for obtaining step (2) is cooled to 660 DEG C~700 DEG C, is removed in the melt by inert gas deaeration Slag, the time is more than 2h;
4) temperature be 690~710 DEG C, pressure be 0.16~0.18MPa, speed be under conditions of 25~35mm/min it is right Molten aluminium alloy is cast, and obtains aluminium alloy cast ingot;
5) aluminium alloy cast ingot is put into treatment furnace and is heated to 450~460 DEG C, soaking time is 1~1.5h, water of coming out of the stove It is cold, above-mentioned treated aluminium alloy cast ingot is heated to 470~480 DEG C under 2~3GPa pressure, 20~30min is incubated Afterwards, power-off pressurize naturally cools to room temperature, and its circulating water flow for cooling down pressure head is 2.0~2.2L/min, after being annealed Aluminium alloy cast ingot;
6) to the aluminium alloy cast ingot milling face after annealing, it is then placed in desk-top stove heat and is heated to 400~420 DEG C, insulation 6 Rolled after~8h, obtain hot rolled plate;
7) by hot rolled plate, warm rolling rolls in being carried out under the conditions of temperature is 170~178 DEG C, obtains closing with superplastic manganese aluminium Golden plate material.
Further, described inert gas is argon gas.
The beneficial effects of the present invention are:The aluminum alloy plate materials that the present invention is obtained have High-temperature Superplasticity energy, the horizontal stroke of sheet material To elongation percentage up to 235~245%, Longitudinal extending rate is up to 252~264%, and energy one step forming goes out complex-shaped workpiece, and And no resilience, dimensionally stable are shaped, machining deviation is less than 2.2 ‰, and tolerance is close with precision machining.In addition, the preparation side Method meets environmental protection processing, disclosure satisfy that the shaping deflection more more complicated shaping demand of big, shape, and can replacing completely For import like product.
Embodiment
Be described further below technical scheme, but claimed scope be not limited to it is described.
Embodiment one
A kind of superplastic aluminum alloy sheet material that the present invention is provided, the sheet material is prepared by the raw material of following percetage by weight Form:5% Mn, 2% Mg, 2% Zn, 0.5% Cu, 0.01% Fe, 0.01% Si, 0.001% Li, 0.001% Sb, 0.001% Ce, 0.001% Gd, 0.001% Y, remaining is Al.
Its preparation method is as follows:
1) smelting furnace is preheated into 15min, fine aluminium ingot is delivered into stove, 700 DEG C are heated to, the aluminium liquid constant temperature after fusing 20min;Make fine aluminium ingot fully melt, then silicon, manganese are added into aluminium liquid to melt successively, then cool the temperature to 660 DEG C, magnesium is complete Total head enters in aluminium alloy;
2) component of remaining alloy is added in aluminium alloy, is incubated 20min, then raises temperature to 750 DEG C, by refining agent plus Enter in aluminium alloy, be incubated 30min;
3) molten mass for obtaining step (2) is cooled to 660 DEG C DEG C, is removed the gred in the melt by inert gas deaeration, when Between be more than 2h;Described inert gas is argon gas.
4) temperature be 690 DEG C, pressure be that 0.16MPa, speed are molten aluminium alloy to be carried out under conditions of 25mm/min Casting, obtains aluminium alloy cast ingot;
5) aluminium alloy cast ingot is put into treatment furnace and is heated to 450 DEG C, soaking time is 1h, water cooling of coming out of the stove, by above-mentioned warp The aluminium alloy cast ingot for crossing processing is heated under 2GPa pressure after 470 DEG C, insulation 20min, and power-off pressurize naturally cools to room Temperature, its circulating water flow for cooling down pressure head is 2.0L/min, the aluminium alloy cast ingot after being annealed;
6) to the aluminium alloy cast ingot milling face after annealing, it is then placed in desk-top stove heat and is heated to after 4000 DEG C, insulation 6h Rolled, obtain hot rolled plate;
7) by hot rolled plate, warm rolling rolls in being carried out under the conditions of temperature is 170 DEG C, obtains with superplastic aluflex plate Material.
Embodiment two
A kind of superplastic aluminum alloy sheet material that the present invention is provided, the sheet material is prepared by the raw material of following percetage by weight Form:10% Mn's, 4% Mg, 4% Zn, 1% Cu, 0.1% Fe, 0.1% Si, 0.01% Li, 0.01% Sb, 0.01% Ce, 0.01% Gd, 0.01% Y, remaining is Al.
Its preparation method is as follows:
1) smelting furnace is preheated into 125min, fine aluminium ingot is delivered into stove, 730 DEG C are heated to, the aluminium liquid constant temperature after fusing 30min;Make fine aluminium ingot fully melt, then silicon, manganese are added into aluminium liquid to melt successively, then cool the temperature to 700 DEG C, magnesium is complete Total head enters in aluminium alloy;
2) component of remaining alloy is added in aluminium alloy, is incubated 30min, then raises temperature to 800 DEG C, by refining agent plus Enter in aluminium alloy, be incubated 40min;
3) molten mass for obtaining step (2) is cooled to 700 DEG C, is removed the gred in the melt by inert gas deaeration, the time For more than 2h;Described inert gas is argon gas.
4) temperature be 690~710 DEG C, pressure be that 0.18MPa, speed are to molten aluminium alloy under conditions of 35mm/min Cast, obtain aluminium alloy cast ingot;
5) aluminium alloy cast ingot is put into treatment furnace and is heated to 460 DEG C, soaking time is 1.5h, water cooling of coming out of the stove will be above-mentioned Treated aluminium alloy cast ingot is heated under 3GPa pressure after 480 DEG C, insulation 30min, and power-off pressurize is naturally cooled to Room temperature, its circulating water flow for cooling down pressure head is 2.2L/min, the aluminium alloy cast ingot after being annealed;
6) to the aluminium alloy cast ingot milling face after annealing, it is then placed in desk-top stove heat and is heated to 420 DEG C, insulation 8h is laggard Row rolling, obtains hot rolled plate;
7) by hot rolled plate, warm rolling rolls in being carried out under the conditions of temperature is 178 DEG C, obtains with superplastic aluflex plate Material.
Embodiment three
A kind of superplastic aluminum alloy sheet material that the present invention is provided, the sheet material is prepared by the raw material of following percetage by weight Form:6% Mn, 3% Mg, 3% Zn, 0.8% Cu, 0.05% Fe, 0.05% Si, 0.004% Li, 0.007% Sb, 0.002% Ce, 0.006% Gd, 0.009% Y, remaining is Al.
Its preparation method is as follows:
1) smelting furnace is preheated into 20min, fine aluminium ingot is delivered into stove, 720 DEG C are heated to, the aluminium liquid constant temperature after fusing 25min;Fine aluminium ingot is set fully to melt, then into aluminium liquid, addition silicon, manganese melt successively, 6700 DEG C are then cooled the temperature to, by magnesium It is completely forced into aluminium alloy;
2) component of remaining alloy is added in aluminium alloy, is incubated 25min, then raises temperature to 770 DEG C, by refining agent plus Enter in aluminium alloy, be incubated 35min;
3) molten mass for obtaining step (2) is cooled to 680 DEG C, is removed the gred in the melt by inert gas deaeration, the time For more than 2h;Described inert gas is argon gas.
4) temperature be 690~710 DEG C, pressure be that 0.17MPa, speed are to molten aluminium alloy under conditions of 30mm/min Cast, obtain aluminium alloy cast ingot;
5) aluminium alloy cast ingot is put into treatment furnace and is heated to 455 DEG C, soaking time is 1.2h, water cooling of coming out of the stove will be above-mentioned Treated aluminium alloy cast ingot is heated under 2.5GPa pressure after 475 DEG C, insulation 25min, powers off pressurize natural cooling To room temperature, its circulating water flow for cooling down pressure head is 2.1L/min, the aluminium alloy cast ingot after being annealed;
6) to the aluminium alloy cast ingot milling face after annealing, it is then placed in desk-top stove heat and is heated to 410 DEG C, insulation 7h is laggard Row rolling, obtains hot rolled plate;
7) by hot rolled plate, warm rolling rolls in being carried out under the conditions of temperature is 175 DEG C, obtains with superplastic aluflex plate Material.

Claims (4)

1. a kind of superplastic aluminum alloy sheet material, it is characterised in that:The sheet material be prepared by the raw material of following percetage by weight and Into:5~10% Mn, 2-4% Mg, 2~4% Zn, 0.5-1% Cu, 0.01-0.1% Fe, 0.01-0.1%'s Si, 0.001-0.01% Li, 0.001-0.01% Sb, 0.001-0.01% Ce, 0.001-0.01% Gd, 0.001- 0.01% Y, remaining is Al.
2. superplastic aluminum alloy sheet material as claimed in claim 1, it is characterised in that:The sheet material is by following percetage by weight Raw material be prepared from:6% Mn, 3% Mg, 3% Zn, 0.8% Cu, 0.05% Fe, 0.05% Si, 0.004% Li, 0.007% Sb, 0.002% Ce, 0.006% Gd, 0.009% Y, remaining is Al.
3. the preparation method of superplastic aluminum alloy sheet material as claimed in claim 1, it is characterised in that:Comprise the following steps:
1) smelting furnace is preheated into 15~25min, fine aluminium ingot is delivered into stove, 700 DEG C~730 DEG C, the aluminium liquid after fusing are heated to 20~30min of constant temperature;Fine aluminium ingot is set fully to melt, then into aluminium liquid, addition silicon, manganese melt successively, then cool the temperature to 660 DEG C~700 DEG C, magnesium is completely forced into aluminium alloy;
2) component of remaining alloy is added in aluminium alloy, is incubated 20~30min, then raise temperature to 750 DEG C~800 DEG C, will Refining agent is added in aluminium alloy, is incubated 30~40min;
3) molten mass for obtaining step (2) is cooled to 660 DEG C~700 DEG C, is removed the gred in the melt by inert gas deaeration, when Between be more than 2h;
4) temperature be 690~710 DEG C, pressure be that 0.16~0.18MPa, speed are aluminium to be closed under conditions of 25~35mm/min Golden liquation is cast, and obtains aluminium alloy cast ingot;
5) aluminium alloy cast ingot is put into treatment furnace and is heated to 450~460 DEG C, soaking time is 1~1.5h, and water cooling of coming out of the stove will Above-mentioned treated aluminium alloy cast ingot is heated under 2~3GPa pressure after 470~480 DEG C, 20~30min of insulation, is broken Electric pressurize naturally cools to room temperature, and its circulating water flow for cooling down pressure head is 2.0~2.2L/min, the aluminium alloy after being annealed Ingot casting;
6) to the aluminium alloy cast ingot milling face after annealing, it is then placed in desk-top stove heat and is heated to 400~420 DEG C, is incubated 6~8h Rolled afterwards, obtain hot rolled plate;
7) by hot rolled plate, warm rolling rolls in being carried out under the conditions of temperature is 170~178 DEG C, obtains with superplastic aluflex plate Material.
4. the preparation method of superplastic aluminum alloy sheet material as claimed in claim 3, it is characterised in that:Described inert gas is Argon gas.
CN201610283633.7A 2016-05-03 2016-05-03 A kind of superplastic aluminum alloy sheet material and preparation method thereof Active CN105755330B (en)

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JPS6431945A (en) * 1987-07-25 1989-02-02 Sumitomo Metal Ind Superplasticity alloy
US4867805A (en) * 1988-02-03 1989-09-19 Agrawal Suphal P Superplastic aluminum alloys, alloy processes and component part formations thereof
JP2007327080A (en) * 2006-06-06 2007-12-20 Kyoto Univ INTERMETALLIC COMPOUND-DISPERSED TYPE Al-BASED MATERIAL AND ITS PRODUCTION METHOD
CN101736183A (en) * 2009-12-28 2010-06-16 东北轻合金有限责任公司 Preparation method of superplastic aluminum alloy plates for track traffic
JP2013146764A (en) * 2012-01-20 2013-08-01 Hitachi Cable Ltd Connecting material and soldered product using the same
CN103509977A (en) * 2012-06-21 2014-01-15 周亚民 High-strength heat-conduction aluminum alloy material for LED backplane
CN105200285A (en) * 2015-10-26 2015-12-30 东北轻合金有限责任公司 Aluminium alloy plate with superplasticity and manufacturing method thereof
CN105483456B (en) * 2016-01-27 2017-04-05 东莞佛亚铝业有限公司 It is a kind of that there is superplastic aluflex sheet material and preparation method thereof

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