CN105200251A - Method for preparing rare-earth-element-erbium-and-ytterbium added Al-Mg alloy - Google Patents
Method for preparing rare-earth-element-erbium-and-ytterbium added Al-Mg alloy Download PDFInfo
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- CN105200251A CN105200251A CN201410288227.0A CN201410288227A CN105200251A CN 105200251 A CN105200251 A CN 105200251A CN 201410288227 A CN201410288227 A CN 201410288227A CN 105200251 A CN105200251 A CN 105200251A
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- 229910052769 Ytterbium Inorganic materials 0.000 title claims abstract description 18
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 15
- 239000000956 alloy Substances 0.000 title claims abstract description 15
- 229910018134 Al-Mg Inorganic materials 0.000 title claims abstract description 10
- 229910018467 Al—Mg Inorganic materials 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 title abstract description 6
- 238000005266 casting Methods 0.000 claims abstract description 18
- 239000006104 solid solution Substances 0.000 claims abstract description 15
- 238000007670 refining Methods 0.000 claims abstract description 11
- 238000003723 Smelting Methods 0.000 claims abstract description 10
- 239000011248 coating agent Substances 0.000 claims abstract description 8
- 238000000576 coating method Methods 0.000 claims abstract description 8
- 229910052751 metal Inorganic materials 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims abstract description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 4
- 239000010439 graphite Substances 0.000 claims abstract description 4
- 239000011253 protective coating Substances 0.000 claims abstract description 4
- 238000010791 quenching Methods 0.000 claims abstract description 4
- 230000000171 quenching effect Effects 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims abstract description 4
- 229910052691 Erbium Inorganic materials 0.000 claims description 16
- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 claims description 14
- 238000005516 engineering process Methods 0.000 claims description 12
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 claims description 12
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 11
- 239000004411 aluminium Substances 0.000 claims description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 5
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 5
- 229910052749 magnesium Inorganic materials 0.000 claims description 5
- 239000011777 magnesium Substances 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 229910001018 Cast iron Inorganic materials 0.000 claims description 3
- 239000008199 coating composition Substances 0.000 claims description 3
- 230000004927 fusion Effects 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 235000019353 potassium silicate Nutrition 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 3
- 240000003936 Plumbago auriculata Species 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 238000002474 experimental method Methods 0.000 abstract 1
- 229910002804 graphite Inorganic materials 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 29
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 description 29
- 230000000052 comparative effect Effects 0.000 description 14
- 229910052706 scandium Inorganic materials 0.000 description 10
- 239000000243 solution Substances 0.000 description 10
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 8
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 description 8
- 229910052726 zirconium Inorganic materials 0.000 description 8
- 150000002910 rare earth metals Chemical class 0.000 description 3
- 241000209456 Plumbago Species 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 229910000765 intermetallic Inorganic materials 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 238000004781 supercooling Methods 0.000 description 2
- 229910001051 Magnalium Inorganic materials 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
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- Electrolytic Production Of Metals (AREA)
Abstract
The invention discloses a method for preparing rare-earth-element-erbium-and-ytterbium added Al-Mg alloy. The method is characterized by including the following steps that 1, a 7.5-kw common resistance furnace is selected to serve as a smelting furnace, a graphite crucible is selected, residual metal, oxide skin and the like of the crucible and smelting tools are completely removed before use, and all the portions in contact with molten alloy are coated with protective coatings to prevent the experiment result from being disturbed; 2, Al blocks weighed in a blocky mode are placed into the crucible, the smelting temperature of the smelting furnace is set to be 720 DEG C, blocky Mg is added in pressed mode through a cover, and even stirring is carried out; 3, refining is carried out through refining agents for 5 min, and the temperature is kept for 1 hour; 4, the surface of a metal mold is coated with a coating before casting to improve the surface quality of a casting mold, wherein the coating is directly brushed to the mold in use; 5, after temperature keeping is finished, drossing is carried out, then the iron casting mold heated to 200 DEG C is prepared, and casting is carried out, wherein the casting speed is well mastered during casting to enable melt to evenly flow into the mold; 6, a cast sample is taken out to be subjected to a solid solution, and oil quenching is carried out after the sample is discharged, wherein the solid solution parameters include the time of 16 h and the temperature of 430+/-5 DEG C.
Description
Technical field
The present invention relates to a kind of preparation technology of magnalium, particularly a kind of preparation technology adding the Al-Mg alloy of rare earth element er and ytterbium.
Background technology
Target 21 century is from now on epoch of aluminum magnesium alloy develop rapidly, and developed country has led the new trend of world aluminum magnesium alloy, and the aluminum magnesium alloy industry of China is also very weak at present.Therefore, want to make China occupy one seat in world's new and high technology competition of fierceness, the systematic study of aluminum magnesium alloy gordian technique must be carried out as soon as possible, set up the technological standard of aluminum magnesium alloy component, development aluminum magnesium alloy exploitation specific equipment, the alloying of exploitation aluminum magnesium alloy, melting, forming technology optimization and control technology.In conjunction with the specific national conditions of China, give full play to the advantage such as good technique basis that China has sufficient magnesium resource, wide aluminum magnesium alloy product applications, Developing Aluminum magnesium alloy pressure-casting, use for reference the experience of developed country's Developing Aluminum magnesium alloy in decades, do industries, universities and research institutors well and combine.Especially in current development of the West Regions, import foreign capital, make full use of abundant salt lake magnesium resource and electric power resource, give special assistance to the exploitation of several aluminum magnesium alloy products in the fields such as automobile, computer, communication, and with the leading high-level efficiency aluminum magnesium alloy Die Casting system set up sophistication, meet environmental requirement of these products, as early as possible starting material are converted into the aluminum magnesium alloy product of high added value, and pass through the widespread use of fine aluminum magnesium alloy, improve the competitive power of China and aluminum magnesium alloy relevant industries product, promote the Economic development of whole country.
Summary of the invention
The technical problem to be solved in the present invention is: the preparation technology providing a kind of Al-Mg alloy, to prepare the Al-Mg alloy of excellent performance.
Technical scheme of the present invention is: a kind of preparation technology adding the Al-Mg alloy of rare earth element er and ytterbium, comprises following steps:
1) smelting furnace selects the conventional, electric-resistance stove of 7.5kw, plumbago crucible, by crucible, melting instrument before using, and the metal of Ex-all remnants and oxide skin etc., and coat protective coating by all with aluminium alloy contact site, in order to avoid produce interference to experimental result;
2) aluminium block weighed up with bulk is put in crucible, and smelting furnace setting temperature of fusion is 720 DEG C, and magnesium adds with bulk form, adds the press-in of fashionable employing bell jar, stirs;
3) carry out refining with refining agent, refining time is 5min, is incubated 1 hour;
4) last layer coating to be coated with on metal mold surface before cast, to improve mo(U)ld face quality, during use, coating directly be brushed on mould;
5) insulation terminates first to carry out slag hitting afterwards, is then ready to by the cast iron casting mould being heated to 200 DEG C, casts, note getting hold of casting rate during casting, melt is flowed into uniformly;
6) take out and water the sample cast out and carry out solid solution, solid solution parameter is time 16h, and temperature 430 ± 5 DEG C, adopts oil quenching after coming out of the stove.
Coating composition mass percent: water glass: 5%, hot water: 65%, ZnO:30%.
Beneficial effect of the present invention: 1, aluminum magnesium alloy is after 430 ± 5 DEG C of solution treatment, its mechanical property (tensile strength and unit elongation) increases to some extent, reason is that solution treatment can make the intermetallic compound in aluminium dissolve in aluminium the sosoloid forming aluminium, thus reach purification crystal boundary, improve alloy strength and hardness.
2, increase constitutional supercooling adding when being aluminum alloy melt casting of rare earth element er and Yb and Trace Zr and Sc, reduce the gas in alloy and impurity; The grain structure of Er and Yb refinement aluminum magnesium alloy in addition, serves good refined crystalline strengthening effect, puies forward heavy alloyed intensity and hardness, and then the mechanical property of aluminum magnesium alloy is improved greatly.
3, the combination of scandium and zirconium adds 1.34 times that intensity raising is the most approximately comparative group.
4, before not having solid solution on the contrary after solid solution after adding erbium, intensity is high.
Embodiment
Add a preparation technology for the Al-Mg alloy of rare earth element er and ytterbium, comprise following steps:
1) smelting furnace selects the conventional, electric-resistance stove of 7.5kw, plumbago crucible, by crucible, melting instrument before using, and the metal of Ex-all remnants and oxide skin etc., and coat protective coating by all with aluminium alloy contact site, in order to avoid produce interference to experimental result;
2) aluminium block weighed up with bulk is put in crucible, and smelting furnace setting temperature of fusion is 720 DEG C, and magnesium adds with bulk form, adds the press-in of fashionable employing bell jar, stirs;
3) carry out refining with refining agent, refining time is 5min, is incubated 1 hour;
4) last layer coating to be coated with on metal mold surface before cast, to improve mo(U)ld face quality, during use, coating directly be brushed on mould;
5) insulation terminates first to carry out slag hitting afterwards, is then ready to by the cast iron casting mould being heated to 200 DEG C, casts, note getting hold of casting rate during casting, melt is flowed into uniformly;
6) take out and water the sample cast out and carry out solid solution, solid solution parameter is time 16h, and temperature 430 ± 5 DEG C, adopts oil quenching after coming out of the stove.
Coating composition mass percent: water glass: 5%, hot water: 65%, ZnO:30%.
No. 0: aluminum magnesium alloy, No. 11: containing the aluminum magnesium alloy of erbium 0.25%, No. 12: containing the aluminum magnesium alloy of erbium 0.2%, No. 13: containing the aluminum magnesium alloy of erbium 0.15%, No. 21: containing the aluminum magnesium alloy of ytterbium 0.4%, No. 22: containing the aluminum magnesium alloy of ytterbium 0.6%, No. 23: containing the aluminum magnesium alloy of ytterbium 0.8%
The coupon after process is starkly lower than without the coupon tensile strength of solution treatment.After solution treatment, the tensile strength of aluminum magnesium alloy is about 1.07 times before treatment, it is that after solid solution, intensity diminishes on the contrary that the tensile strength added after the erbium solution treatment of 0.15% is about 0.79 times before treatment, the tensile strength added after the ytterbium solution treatment of 0.6% is about 1.21 times before treatment, the tensile strength added after the scandium solution treatment of 0.35% is about 1.31 times before treatment, the tensile strength added after the zirconium solution treatment of 0.4 is about 1.24 times before treatment, the tensile strength added after 0.2% pure rare earth solution treatment is about 1.18 times before treatment, the tensile strength change added before and after 0.2% scandium and 0.2% zirconium solution treatment is little.
Before solid solution: the tensile strength added after 0.15% erbium is about 1.15 times of comparative group, the tensile strength added after 0.6% ytterbium is about 1.14 times of comparative group, the tensile strength added after 0.35% scandium is about 1.20 times of comparative group, the tensile strength added after 0.4% zirconium is about 1.18 times of comparative group, the tensile strength added after 0.2% pure rare earth is about 1.15 times of comparative group, and the tensile strength after the combination of 0.2% scandium and 0.2% zirconium adds is about 1.34 times of comparative group.
After solid solution: the tensile strength added after 0.15% erbium is about 0.85 times of comparative group, the tensile strength added after 0.6% ytterbium is about 1.29 times of comparative group, the tensile strength added after 0.35% scandium is about 1.47 times of comparative group, the tensile strength added after 0.4% zirconium is about 1.37 times of comparative group, the tensile strength added after 0.2% pure rare earth is about 1.27 times of comparative group, and the tensile strength after the combination of 0.2% scandium and 0.2% zirconium adds is about 1.25 times of comparative group.
1, aluminum magnesium alloy is after 430 ± 5 DEG C of solution treatment, and its mechanical property (tensile strength and unit elongation) increases to some extent, and reason is that solution treatment can make the intermetallic compound in aluminium dissolve in aluminium the sosoloid forming aluminium, thus reach purification crystal boundary, improve alloy strength and hardness.
2, adding when being aluminum alloy melt casting of rare earth element er and Yb and Trace Zr and Sc increases constitutional supercooling, reduces the gas in alloy and impurity; The grain structure of Er and Yb refinement aluminum magnesium alloy in addition, serves good refined crystalline strengthening effect, puies forward heavy alloyed intensity and hardness, and then the mechanical property of aluminum magnesium alloy is improved greatly.
3, the combination of scandium and zirconium adds 1.34 times that intensity raising is the most approximately comparative group.
4, before not having solid solution on the contrary after solid solution after adding erbium, intensity is high.
Claims (2)
1. add a preparation technology for the Al-Mg alloy of rare earth element er and ytterbium, it is characterized in that: comprise following steps:
1) smelting furnace selects the conventional, electric-resistance stove of 7.5kw, plumbago crucible, by crucible, melting instrument before using, and the metal of Ex-all remnants and oxide skin etc., and coat protective coating by all with aluminium alloy contact site, in order to avoid produce interference to experimental result;
2) aluminium block weighed up with bulk is put in crucible, and smelting furnace setting temperature of fusion is 720 DEG C, and magnesium adds with bulk form, adds the press-in of fashionable employing bell jar, stirs;
3) carry out refining with refining agent, refining time is 5min, is incubated 1 hour;
4) last layer coating to be coated with on metal mold surface before cast, to improve mo(U)ld face quality, during use, coating directly be brushed on mould;
5) insulation terminates first to carry out slag hitting afterwards, is then ready to by the cast iron casting mould being heated to 200 DEG C, casts, note getting hold of casting rate during casting, melt is flowed into uniformly;
6) take out and water the sample cast out and carry out solid solution, solid solution parameter is time 16h, and temperature 430 ± 5 DEG C, adopts oil quenching after coming out of the stove.
2. a kind of preparation technology adding the Al-Mg alloy of rare earth element er and ytterbium according to claim 1, is characterized in that: coating composition mass percent: water glass: 5%, hot water: 65%, ZnO:30%.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410288227.0A CN105200251A (en) | 2014-06-25 | 2014-06-25 | Method for preparing rare-earth-element-erbium-and-ytterbium added Al-Mg alloy |
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| CN201410288227.0A CN105200251A (en) | 2014-06-25 | 2014-06-25 | Method for preparing rare-earth-element-erbium-and-ytterbium added Al-Mg alloy |
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| CN105200251A true CN105200251A (en) | 2015-12-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106111917A (en) * | 2016-06-24 | 2016-11-16 | 芜湖黄燕实业有限公司 | High intensity wheel hub and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106111917A (en) * | 2016-06-24 | 2016-11-16 | 芜湖黄燕实业有限公司 | High intensity wheel hub and preparation method thereof |
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Application publication date: 20151230 |