CN103924127A - Preparation method of aluminum lanthanum ytterbium ternary intermediate alloy - Google Patents
Preparation method of aluminum lanthanum ytterbium ternary intermediate alloy Download PDFInfo
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- CN103924127A CN103924127A CN201410107173.3A CN201410107173A CN103924127A CN 103924127 A CN103924127 A CN 103924127A CN 201410107173 A CN201410107173 A CN 201410107173A CN 103924127 A CN103924127 A CN 103924127A
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- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 61
- 239000000956 alloy Substances 0.000 title claims abstract description 61
- -1 aluminum lanthanum ytterbium Chemical compound 0.000 title claims abstract description 13
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 238000007670 refining Methods 0.000 claims abstract description 15
- 229910052746 lanthanum Inorganic materials 0.000 claims abstract description 13
- 238000002844 melting Methods 0.000 claims abstract description 9
- 230000008018 melting Effects 0.000 claims abstract description 9
- 238000002604 ultrasonography Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 16
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 238000007872 degassing Methods 0.000 claims description 7
- 238000003723 Smelting Methods 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 238000009997 thermal pre-treatment Methods 0.000 claims description 2
- 229910052761 rare earth metal Inorganic materials 0.000 abstract description 15
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 8
- 229910052782 aluminium Inorganic materials 0.000 abstract description 8
- 150000002910 rare earth metals Chemical class 0.000 abstract description 8
- 238000005204 segregation Methods 0.000 abstract description 8
- 230000003647 oxidation Effects 0.000 abstract description 4
- 238000007254 oxidation reaction Methods 0.000 abstract description 4
- 239000000155 melt Substances 0.000 abstract 2
- 238000005266 casting Methods 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000002893 slag Substances 0.000 abstract 1
- 238000009210 therapy by ultrasound Methods 0.000 abstract 1
- 229910052769 Ytterbium Inorganic materials 0.000 description 8
- 229910000838 Al alloy Inorganic materials 0.000 description 7
- 238000005275 alloying Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 239000004411 aluminium Substances 0.000 description 4
- 239000000470 constituent Substances 0.000 description 4
- 238000005868 electrolysis reaction Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000007499 fusion processing Methods 0.000 description 2
- 229910000765 intermetallic Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910020785 La—Ce Inorganic materials 0.000 description 1
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 229910001404 rare earth metal oxide Inorganic materials 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
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Abstract
The invention relates to a preparation method of an aluminum lanthanum ytterbium ternary intermediate alloy, which comprises the following steps: pre-treating Al-La, Al-Yb binary intermediate alloy to the temperature of 100-150 DEG C; adding the Al-La binary intermediate alloy in a melting furnace, completely fusing, heating to the temperature of 725-745 DEG C and adding in the Al-Yb binary intermediate alloy; insulating for 20-30 minutes after 725-735 DEG C after the alloy is completely fused, intermittently performing ultrasonic treatment on a melt, wherein the ultrasonic intensity is 0.8kw/cm<2>-1.0kw/cm<2>, the ultrasonic time is 40-45 minutes, application time of high energy ultrasound for each time is 71-80s, intermittence time is 71-80s; cooling the melt to the temperature of 700-710 DEG C and then refining, removing gas, removing slag, and casting. In the preparation method, pure aluminum is not used, aluminum melting time is omitted, burning loss of rare earth can be effectively avoided, and oxidation inclusion and component segregation are reduced.
Description
Technical field
The invention belongs to metallurgical technology field.
Background technology
Aluminium alloy is as typical light material in metallic substance, compare with ferrous materials, there is high strength, low density, high fracture toughness, thermal expansivity little, and the good characteristic such as high anti-stress-corrosion ability, be able to widespread use in machinery, chemical industry, automobile, building, Aeronautics and Astronautics field.Concerning aluminium alloy cast ingot, crystal grain thinning can make its interior tissue even, reduces segregation, improves plasticity, prevents the defect such as crackle and shrinkage cavity.In aluminium and aluminium alloy, add appropriate rare earth element, can improve its performance, development novel material.Conventionally rare earth element has very strong chemical mobility of the surface, has alloying, purification, the effect such as rotten.
In Al-RE aluminium alloy extensively applies to industrial production time, its smelting technique is proposed to new requirement: ensureing under the prerequisite of alloy property, in the shortest time, melt out qualified Al-RE aluminium alloy with minimum energy, both the time of alloy melting and the loss of metallic element had been reduced, save production cost, can accurately control again the composition of alloy.Thereby effectively enhance productivity, reduce and pollute.Because rare earth all has rotten ability in various degree, can generate different intermetallic compounds.Therefore can obtain the intermetallic compound of several raising alloy properties by adding several different rare earths, thereby prepare different aluminium-RE ternary master alloys.Document [Lee Room. the Microstructure and properties research of the rotten secondary aluminium alloy ADC12 of mishmetal. 2011, University Of Nanchang] in reported a kind of method of the Al-La-Ce of preparation ternary master alloy.But this method rare-earth oxidation scaling loss is serious, and the scaling loss amount of La and Ce is respectively 12.21% and 16.87%, and there is component segregation to a certain degree.Therefore the simple method of finding out a kind of Al-RE of preparation ternary master alloy is significant.
People constantly explore the preparation method of aluminium-rare earth intermediate alloy, the production method of preparing at present rare earth aluminium alloy is roughly summarized following two kinds: 1, direct fusion process, be that rare earth or norium are joined in high temperature aluminum liquid by a certain percentage, make master alloy.Be characterized in easy to operate, alloying constituent stable content.Shortcoming is exactly easily to cause alloying constituent segregation, causes local part overrich, disperses the defects such as inhomogeneous.2, fused salt electrolysis process, in electrolytic furnace, using Repone K, rare earth oxide and rare earth chloride etc. as ionogen, in aluminium liquid, electrolysis makes aluminium-rare earth intermediate alloy.In industrial aluminum electrolysis bath, directly add rare earth compound, make aluminium-rare earth intermediate alloy by electrolysis.But in electrolytic process, can produce toxic gas, contaminate environment, is detrimental to health.In addition, alloying constituent is difficult to control, and fluctuation range is larger.
The present invention introduces high-energy ultrasonic processing on the basis of direct fusion process, utilizes the sound cavitation effect of high-energy ultrasonic and acoustic streaming effect to make the master alloy composition that makes even, and rare earth burn out rate is low, prevents segregation.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of method of aluminium lanthanum ytterbium ternary master alloy is provided.
The present invention is achieved by the following technical solutions, comprises the following steps:
1, preheating Al-La, Al-Yb binary intermediate alloy to 100～150 DEG C.Described Al-La binary intermediate alloy is Al-(5～9wt.%) La, and Al-Yb binary intermediate alloy is Al-(5～10wt.%) Yb;
2, Al-La binary intermediate alloy is joined to smelting furnace, fusing completely, adds Al-Yb binary intermediate alloy after increasing the temperature to 725～735 DEG C;
3, alloy is incubated 20～30min at 725～735 DEG C after melting completely, then by intermittently supersound process of melt, ultrasound intensity 0.8kw/cm
2～1.0kw/cm
2, ultrasonic time 40～45min, the each application time 71～80s of high-energy ultrasonic, intermittent time 71～80s.Described when ultrasonic ultrasonic head stretch into melt 10～15mm;
4, melt is down to 700～710 DEG C, after refining, degasification, slagging-off, pours into a mould, obtain aluminium lanthanum ytterbium ternary master alloy.Described refining agent is FX-LQ, and add-on is 0.1～0.15% of melt gross weight, action time 3～5min, refining agent is wanted thermal pretreatment, and limit adds refining agent limit and stirs gently melt.The described C that uses
2cl
6degasification, add-on is 0.3～0.5% of melt gross weight, action time 5～10min.
Technique effect of the present invention is: in preparation method of the present invention, do not use fine aluminium, save the melting fine aluminium time.High energy is supersound process alloy intermittently.Method is easy, and alloying constituent is stable, can effectively avoid rare earth scaling loss, reduce oxide inclusion and component segregation, and technique is simple, safe and reliable, easy to operate, three-waste free pollution.
Brief description of the drawings
Fig. 1 is Al-5La-5Yb ternary master alloy microstructure metallograph prepared by the present invention.
Embodiment
The present invention will be described further by following embodiment, but the specific embodiment of the present invention is not limited to following embodiment.
Embodiment 1: respectively Al-9wt.%La, Al-9wt.%Yb are put into crucible and be preheating to 150 DEG C.Al-9wt.%La binary intermediate alloy is joined to smelting furnace, and fusing completely, adds Al-10wt.%Yb binary intermediate alloy after increasing the temperature to 735 DEG C.After melting completely, alloy is incubated 30min at 735 DEG C.Under above-mentioned alloy melt liquid level, 15mm place applies intermittently high-energy ultrasonic, ultrasound intensity 1.0kw/cm
2, ultrasonic time 45min, the each application time 75s of high-energy ultrasonic, intermittent time 75s; Melt is down to 710 DEG C, adds the 0.15%FX-LQ refining agent refining 5min of melt gross weight, then add 0.5% C of melt gross weight
2cl
6degasification 10min.After slagging-off, cast, obtains Al-9La-10Yb ternary master alloy.
Embodiment 2: respectively Al-7wt.%La, Al-7wt.%Yb are put into crucible and be preheating to 120 DEG C.Al-7wt.%La binary intermediate alloy is joined to smelting furnace, and fusing completely, adds Al-7wt.%Yb binary intermediate alloy after increasing the temperature to 730 DEG C.After melting completely, alloy is incubated 25min at 730 DEG C.Under above-mentioned alloy melt liquid level, 12mm place applies intermittently high-energy ultrasonic, ultrasound intensity 0.9kw/cm
2, ultrasonic time 42min, the each application time 71s of high-energy ultrasonic, intermittent time 71s; Melt is down to 705 DEG C, adds the 0.12%FX-LQ refining agent refining 4min of melt gross weight, then add 0.4% C of melt gross weight
2cl
6degasification 8min.After slagging-off, cast, obtains Al-7La-7Yb ternary master alloy.
Embodiment 3: respectively Al-5wt.%La, Al-5wt.%Yb are put into crucible and be preheating to 100 DEG C.Al-5wt.%La binary intermediate alloy is joined to smelting furnace, and fusing completely, adds Al-5wt.%Yb binary intermediate alloy after increasing the temperature to 725 DEG C.After melting completely, alloy is incubated 20min at 725 DEG C.Under above-mentioned alloy melt liquid level, 10mm place applies intermittently high-energy ultrasonic, ultrasound intensity 0.8kw/cm
2, ultrasonic time 40min, the each application time 80s of high-energy ultrasonic, intermittent time 80s; Melt is down to 700 DEG C, adds the 0.1%FX-LQ refining agent refining 3min of melt gross weight, then add 0.3% C of melt gross weight
2cl
6degasification 5min.After slagging-off, cast, obtains Al-5La-5Yb ternary master alloy.
As shown in Figure 1, the alloy structure for obtaining under embodiment 3 conditions.The Al-5La-5Yb ternary master alloy making is carried out to ICP detection, and result shows that in alloy, La content is 5.15wt.%, and Yb content is 4.5wt.%.Process is calculated the burn out rate of rare earth La, Yb all lower than 5%.As can be seen from the figure,, due to stirring, the dissemination of hyperacoustic acoustic cavitation harmony fluidisation effect to melt, Al-5La-5Yb alloy structure is evenly distributed, non-oxidation is mingled with and component segregation phenomenon, and technique is simple, safe and reliable, easy to operate, three-waste free pollution.
In sum, the Al-La-Yb ternary master alloy tissue distribution that the present invention obtains is even, and non-oxidation is mingled with and component segregation phenomenon, and technique is simple, safe and reliable, easy to operate, three-waste free pollution.
Claims (5)
1. a preparation method for the aluminium lanthanum ytterbium ternary master alloy of metallurgical technology field, is characterized in that: preheating Al-La, Al-Yb binary intermediate alloy to 100～150 DEG C; Al-La binary intermediate alloy is joined to smelting furnace, and fusing completely, adds Al-Yb binary intermediate alloy after increasing the temperature to 725～735 DEG C; After melting completely, alloy is incubated 20～30min at 725～735 DEG C, then by intermittently supersound process of melt, ultrasound intensity 0.8kw/cm
2～1.0kw/cm
2, ultrasonic time 40～45min, the each application time 71～80s of high-energy ultrasonic, intermittent time 71～80s; Melt is down to 700～710 DEG C, after refining, degasification, slagging-off, pours into a mould, obtain aluminium lanthanum ytterbium ternary master alloy.
2. the preparation method of aluminium lanthanum ytterbium ternary master alloy according to claim 1, is characterized in that, described Al-La binary intermediate alloy is Al-(5～9wt.%) La, and Al-Yb binary intermediate alloy is Al-(5～10wt.%) Yb.
3. the preparation method of aluminium lanthanum ytterbium ternary master alloy according to claim 1, is characterized in that, described when ultrasonic ultrasonic head to stretch into melt 10～15mm.
4. the preparation method of aluminium lanthanum ytterbium ternary master alloy according to claim 1, is characterized in that, described refining agent is FX-LQ, add-on is 0.1～0.15% of melt gross weight, refining agent is wanted thermal pretreatment, action time 3～5min, and limit adds refining agent limit and stirs gently melt.
5. the preparation method of aluminium lanthanum ytterbium ternary master alloy according to claim 1, is characterized in that the described C that uses
2cl
6degasification, add-on is 0.3～0.5% of melt gross weight, action time 5～10min.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104178649A (en) * | 2014-09-01 | 2014-12-03 | 南昌大学 | Preparation method for high-performance lanthanum-ytterbium-aluminum alloy |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090297394A1 (en) * | 2004-12-02 | 2009-12-03 | Cast Centre Pty Ltd | Aluminium casting alloy |
| CN102220523A (en) * | 2011-06-12 | 2011-10-19 | 南昌大学 | Method for preparing aluminum-lanthanum intermediate alloy by using high-intensity ultrasound |
| CN102912161A (en) * | 2012-07-17 | 2013-02-06 | 南昌大学 | Method for preparing aluminum cerium intermediate alloy through high-intensity ultrasound |
| CN103469026A (en) * | 2013-08-16 | 2013-12-25 | 南昌大学 | Rare earth element ytterbium alloyed aluminum-silicon alloy and preparation method thereof |
| CN103469027A (en) * | 2013-08-16 | 2013-12-25 | 南昌大学 | Rare earth element lanthanum alloyed aluminum-silicon alloy and preparation method thereof |
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2014
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090297394A1 (en) * | 2004-12-02 | 2009-12-03 | Cast Centre Pty Ltd | Aluminium casting alloy |
| CN102220523A (en) * | 2011-06-12 | 2011-10-19 | 南昌大学 | Method for preparing aluminum-lanthanum intermediate alloy by using high-intensity ultrasound |
| CN102912161A (en) * | 2012-07-17 | 2013-02-06 | 南昌大学 | Method for preparing aluminum cerium intermediate alloy through high-intensity ultrasound |
| CN103469026A (en) * | 2013-08-16 | 2013-12-25 | 南昌大学 | Rare earth element ytterbium alloyed aluminum-silicon alloy and preparation method thereof |
| CN103469027A (en) * | 2013-08-16 | 2013-12-25 | 南昌大学 | Rare earth element lanthanum alloyed aluminum-silicon alloy and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104178649A (en) * | 2014-09-01 | 2014-12-03 | 南昌大学 | Preparation method for high-performance lanthanum-ytterbium-aluminum alloy |
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Effective date of registration: 20200925 Address after: 808, floor 8, building B, business center, gangzhilong science and Technology Park, No. 6, Qinglong Road, Qinghua community, Longhua street, Longhua District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Pengbo Intellectual Property Service Co.,Ltd. Address before: No. 999 Xuefu Road in Nanchang city Honggutan New District in Jiangxi Province Patentee before: Nanchang University Effective date of registration: 20200925 Address after: 221000 No.17, Shixin Road, Yangdong village, Shitun sub district office, Tongshan District, Xuzhou City, Jiangsu Province Patentee after: Xuzhou Xinbo metal products Co.,Ltd. Address before: 808, floor 8, building B, business center, gangzhilong science and Technology Park, No. 6, Qinglong Road, Qinghua community, Longhua street, Longhua District, Shenzhen City, Guangdong Province Patentee before: Shenzhen Pengbo Intellectual Property Service Co.,Ltd. |
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Denomination of invention: Preparation method of aluminum lanthanum ytterbium ternary intermediate alloy Granted publication date: 20160817 Pledgee: Bank of Jiangsu Co.,Ltd. Xuzhou Branch Pledgor: Xuzhou Xinbo metal products Co.,Ltd. Registration number: Y2024980007945 |