CN104294108A - Composition for preventing aluminum alloy from causing large crystal grains and preparation method thereof - Google Patents
Composition for preventing aluminum alloy from causing large crystal grains and preparation method thereof Download PDFInfo
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- CN104294108A CN104294108A CN201410591358.6A CN201410591358A CN104294108A CN 104294108 A CN104294108 A CN 104294108A CN 201410591358 A CN201410591358 A CN 201410591358A CN 104294108 A CN104294108 A CN 104294108A
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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
- 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
- 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
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
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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
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Abstract
The invention relates to a composition for preventing aluminum alloy from causing large crystal grains and a preparation method thereof. The composition for preventing the aluminum alloy from causing large crystal grains comprises the following components by weight percentage: 0.58-0.61% of magnesium, 0.03-0.035% of carbon, 0.75-0.78% of silicon, 0.30-0.35% of manganese, 0.1-0.15% of chromium, 0.2-0.24% of copper, 0.2-0.4% of iron, 0.03-0.05% of titanium, 0.001-0.0015% of vanadium, 0.01-0.03% of strontium, 0.001-0.003% of scandium, 0.001-0.003% of neodymium, 0.03-0.05% of molybdenum and the balance of aluminum. According to the invention, small crystal grains in the interior of aluminum alloy organization and the resistance to the growth of crystal grain can be better realized; moreover, the preparation technology for the composition preventing the aluminum alloy from causing large crystal grains ensures uniform organization structure.
Description
Technical field
The invention belongs to aluminium alloy preparation field, refer to especially a kind of prevent aluminium alloy from occurring large grain size composition and preparation method.
Background technology
Because aluminium alloy have lightweight, intensity is high and corrosion resistant advantage, has been widely used in the fields such as Rail car manufacture, machinery and building.In order to alleviate the weight of the finished product, the aluminium profile material now used is thin-walled, the beginning such as hollow, and for the aluminium alloy used as sheet material, existing production method is mainly manufactured by techniques such as extruding, but in extrusion process, the deflection of aluminum alloy blank, stress and heat up large, thus crystal grain can occur in quenching process regrow problem, and grain growing is too fast and form uneven coarse grain.Such aluminum alloy organization's structure, all has a great impact the mechanical property of the finished product, anti-fatigue performance and face corrosive nature.
Aluminium alloy how can be suppressed to be processed into the crystal grain regrowth in section bar process, and improving small grains in in-house ratio, to ensure aluminum alloy organization's consistent internal structure, is one of major subjects of those skilled in the art.
Summary of the invention
The object of this invention is to provide a kind of prevent aluminium alloy from occurring large grain size composition and preparation method, by the technical program, the crystal grain of aluminium alloy can be made tiny and homogeneous microstructure, improve the performance of product.
The present invention is achieved by the following technical solutions:
A kind of composition preventing aluminium alloy from occurring large grain size, its composition is by weight percentage, the aluminium of the scandium of the vanadium of the iron of the chromium of the silicon of the magnesium of 0.58-0.61%, the carbon of 0.03-0.035%, 0.75-0.78%, the manganese of 0.30-0.35%, 0.1-0.15%, the copper of 0.2-0.24%, 0.2-0.4%, the titanium of 0.03-0.05%, 0.001-0.0015%, the strontium of 0.01-0.03%, 0.001-0.003%, the neodymium of 0.001-0.003%, the molybdenum of 0.03-0.05% and surplus.
Described preparation method is:
Batching, its composition is by weight percentage, and the aluminium of the scandium of the vanadium of the iron of the chromium of the silicon of the magnesium of 0.58-0.61%, the carbon of 0.03-0.035%, 0.75-0.78%, the manganese of 0.30-0.35%, 0.1-0.15%, the copper of 0.2-0.24%, 0.2-0.4%, the titanium of 0.03-0.05%, 0.001-0.0015%, the strontium of 0.01-0.03%, 0.001-0.003%, the neodymium of 0.001-0.003%, the aluminium of 0.03-0.05% and surplus carries out calculating batching;
Melting, is undertaken being smelted into liquid and breeding 0.5-1 hour by above-mentioned batching, is then lowered the temperature by liquid to be warming up to after 120-150 DEG C again and breeds temperature, be incubated and carry out constant temperature casting after 0.5-1 hour, adopt and at the uniform velocity lower the temperature into aluminum alloy ingot in temperature-fall period;
Quenching, carries out constant temperature extruding in 1-2 hour by aluminum alloy ingot at the quenching furnance inside holding of 520 ± 20 DEG C, and extrusion speed at 1.5-2.5 m/min, and adopts water liquid to quench and air blast quenching.
Described cooling rate of at the uniform velocity lowering the temperature maintains 15-20 DEG C/min.
Described quenching process divides two stages, is first that water liquid is quenched to 250-280 DEG C, then carries out air blast quenching to room temperature.
The present invention's beneficial effect is compared with the existing technology:
By adding titanium and v element in the technical program, the crystal grain of aluminum alloy organization inside better can be realized tiny and resist the growth of crystal grain; And by preparation technology, ensure that the even of weave construction.
Embodiment
Describe 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 specific embodiment only can be used for explaining the present invention and can not being used for explanation.
Add carbon in the inventive solutions and better can promote ferro element fusing at aluminium alloy, improve dense structure's property, prevent excessive grain growth.
A kind of composition preventing aluminium alloy from occurring large grain size, its composition is by weight percentage, the aluminium of the scandium of the vanadium of the iron of the chromium of the silicon of the magnesium of 0.58-0.61%, the carbon of 0.03-0.035%, 0.75-0.78%, the manganese of 0.30-0.35%, 0.1-0.15%, the copper of 0.2-0.24%, 0.2-0.4%, the titanium of 0.03-0.05%, 0.001-0.0015%, the strontium of 0.01-0.03%, 0.001-0.003%, the neodymium of 0.001-0.003%, the molybdenum of 0.03-0.05% and surplus.
Described preparation method is:
Batching, its composition is by weight percentage, and the aluminium of the scandium of the vanadium of the iron of the chromium of the silicon of the magnesium of 0.58-0.61%, the carbon of 0.03-0.035%, 0.75-0.78%, the manganese of 0.30-0.35%, 0.1-0.15%, the copper of 0.2-0.24%, 0.2-0.4%, the titanium of 0.03-0.05%, 0.001-0.0015%, the strontium of 0.01-0.03%, 0.001-0.003%, the neodymium of 0.001-0.003%, the molybdenum of 0.03-0.05% and surplus carries out calculating batching;
Melting, above-mentioned batching is carried out being smelted into liquid and breeding 0.5-1 hour, then liquid is lowered the temperature to be warming up to again after 120-150 DEG C and breed temperature, be incubated and carry out constant temperature casting after 0.5-1 hour, in temperature-fall period, adopt cooling rate to maintain 15-20 DEG C/min at the uniform velocity lower the temperature into aluminum alloy ingot;
Quenching, carries out constant temperature extruding in 1-2 hour by aluminum alloy ingot at the quenching furnance inside holding of 520 ± 20 DEG C, and extrusion speed at 1.5-2.5 m/min, and adopts water liquid to quench and air blast quenching.
Described quenching process divides two stages, is first that water liquid is quenched to 250-280 DEG C, then carries out air blast quenching to room temperature.
In following examples of the application, only have the composition of aluminium alloy to have any different, all the other steps of preparation method are identical, and other step therefore for preparation method does not carry out repeat specification.
Embodiment 1
A kind of composition preventing aluminium alloy from occurring large grain size, its composition is by weight percentage, the magnesium of 0.58%, the carbon of 0.03%, 0.75% silicon, 0.30% manganese, 0.1% chromium, 0.2% copper, 0.2% iron, 0.03 titanium, 0.001% vanadium, 0.01% strontium, 0.001% scandium, the neodymium of 0.001%, the molybdenum of 0.03% and surplus aluminium.
Embodiment 2
A kind of composition preventing aluminium alloy from occurring large grain size, its composition is by weight percentage, the magnesium of 0.61%, the carbon of 0.035%, 0.78% silicon, 0.35% manganese, 0.15% chromium, 0.24% copper, 0.4% iron, 0.05% titanium, 0.0015% vanadium, 0.03% strontium, 0.003% scandium, the neodymium of 0.003%, the molybdenum of 0.05% and surplus aluminium.
Embodiment 3
A kind of composition preventing aluminium alloy from occurring large grain size, its composition is by weight percentage, the magnesium of 0.60%, the carbon of 0.032%, 0.76% silicon, 0.33% manganese, 0.13% chromium, 0.22% copper, 0.3% iron, 0.04% titanium, 0.0013% vanadium, 0.015% strontium, 0.002% scandium, the neodymium of 0.0015%, the molybdenum of 0.045% and surplus aluminium.
Claims (5)
1. the composition preventing aluminium alloy from occurring large grain size, it is characterized in that: its composition is by weight percentage, the aluminium of the scandium of the vanadium of the iron of the chromium of the silicon of the magnesium of 0.58-0.61%, the carbon of 0.03-0.035%, 0.75-0.78%, the manganese of 0.30-0.35%, 0.1-0.15%, the copper of 0.2-0.24%, 0.2-0.4%, the titanium of 0.03-0.05%, 0.001-0.0015%, the strontium of 0.01-0.03%, 0.001-0.003%, the neodymium of 0.001-0.003%, the molybdenum of 0.03-0.05% and surplus.
2. prevent aluminium alloy from occurring a composition preparation method for large grain size, it is characterized in that:
Batching;
Melting, is undertaken being smelted into liquid and breeding 0.5-1 hour by above-mentioned batching, is then lowered the temperature by liquid to be warming up to after 120-150 DEG C again and breeds temperature, be incubated and carry out constant temperature casting after 0.5-1 hour, adopt and at the uniform velocity lower the temperature into aluminum alloy ingot in temperature-fall period;
Quenching, carries out constant temperature extruding in 1-2 hour by aluminum alloy ingot at the quenching furnance inside holding of 520 ± 20 DEG C, and extrusion speed at 1.5-2.5 m/min, and adopts water liquid to quench and air blast quenching.
3. prevent aluminium alloy from occurring the composition preparation method of large grain size according to claim 2, it is characterized in that: described cooling rate of at the uniform velocity lowering the temperature maintains 15-20 DEG C/min.
4. prevent aluminium alloy from occurring the composition preparation method of large grain size according to claim 2, it is characterized in that: described quenching process divides two stages, be first that water liquid is quenched to 250-280 DEG C, then carry out air blast quenching to room temperature.
5. prevent aluminium alloy from occurring the composition preparation method of large grain size according to claim 2, it is characterized in that: described batching is, composition is by weight percentage, the aluminium of the scandium of the vanadium of the iron of the chromium of the silicon of the magnesium of 0.58-0.61%, the carbon of 0.03-0.035%, 0.75-0.78%, the manganese of 0.30-0.35%, 0.1-0.15%, the copper of 0.2-0.24%, 0.2-0.4%, the titanium of 0.03-0.05%, 0.001-0.0015%, the strontium of 0.01-0.03%, 0.001-0.003%, the neodymium of 0.001-0.003%, the molybdenum of 0.03-0.05% and surplus.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104294106A (en) * | 2014-10-29 | 2015-01-21 | 张超 | Preparation method for composition for preventing aluminum alloy from causing large crystal grains |
| CN104294107A (en) * | 2014-10-29 | 2015-01-21 | 张超 | Composition for preventing aluminum alloy from causing large crystal grains |
| CN105256191A (en) * | 2015-11-12 | 2016-01-20 | 郭芙 | Material avoiding large grains in aluminum alloy and preparation method |
| CN105401008A (en) * | 2015-11-12 | 2016-03-16 | 薛亚红 | Material for preventing large grains from appearing in aluminum alloy and preparing method for material |
| CN106191560A (en) * | 2016-08-17 | 2016-12-07 | 任静儿 | A kind of material preventing aluminium alloy from big crystal grain occurring and preparation method |
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| CN1098446A (en) * | 1993-08-03 | 1995-02-08 | 中国科学院长春应用化学研究所 | Aluminium-strontium-aluminium-strontium-rare-earth refining modifying agent and production technique thereof |
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| CN103014436A (en) * | 2012-11-26 | 2013-04-03 | 姚富云 | Material capable of preventing large grains from being produced in aluminium alloy and preparation method thereof |
| CN104294107A (en) * | 2014-10-29 | 2015-01-21 | 张超 | Composition for preventing aluminum alloy from causing large crystal grains |
| CN104294106A (en) * | 2014-10-29 | 2015-01-21 | 张超 | Preparation method for composition for preventing aluminum alloy from causing large crystal grains |
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2014
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104294106A (en) * | 2014-10-29 | 2015-01-21 | 张超 | Preparation method for composition for preventing aluminum alloy from causing large crystal grains |
| CN104294107A (en) * | 2014-10-29 | 2015-01-21 | 张超 | Composition for preventing aluminum alloy from causing large crystal grains |
| CN105256191A (en) * | 2015-11-12 | 2016-01-20 | 郭芙 | Material avoiding large grains in aluminum alloy and preparation method |
| CN105401008A (en) * | 2015-11-12 | 2016-03-16 | 薛亚红 | Material for preventing large grains from appearing in aluminum alloy and preparing method for material |
| CN106191560A (en) * | 2016-08-17 | 2016-12-07 | 任静儿 | A kind of material preventing aluminium alloy from big crystal grain occurring and preparation method |
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Application publication date: 20150121 |