CN101328549A - Refining process of Al-Ti-B intermediate alloy for pure aluminum - Google Patents
Refining process of Al-Ti-B intermediate alloy for pure aluminum Download PDFInfo
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- CN101328549A CN101328549A CNA2007100938801A CN200710093880A CN101328549A CN 101328549 A CN101328549 A CN 101328549A CN A2007100938801 A CNA2007100938801 A CN A2007100938801A CN 200710093880 A CN200710093880 A CN 200710093880A CN 101328549 A CN101328549 A CN 101328549A
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Abstract
The invention provides a process of Al-Ti-B master alloy on grain refinement of pure aluminum. In the invention, except for the addition of the Al-Ti-B master alloy grain refiner in the aluminum melt, the high energy ultrasonic vibration treatment is also adopted, thereby speeding up dissolving and dispersing of TiAl3 phase, increasing the dispersive distribution degree of TiB2 grains and further improving the grain refinement efficiency of the Al-Ti-B master alloy. Industrial pure aluminum as-cast crystal grains treated by the grain refinement process of the invention are all fine isometric crystals, the average size of which is less than 150 mu m, thereby not only improving the quality of aluminum materials but also meeting the requirements on the subsequent rolling of aluminum products.
Description
Technical field
The present invention relates to the metal material processing technical field, specifically, the present invention relates to a kind of technology of the Al-Ti-B of utilization master alloy refinement fine aluminium.
Background technology
Grain refining is to improve one of important means of the strength of materials and plasticity, it is the important channel of improving the aluminium quality, extensive utilization along with aluminium, especially in the application of high-technology field, aluminium ingot, the tissue of base in follow-up deep processing technology have been proposed strict demand, and the crucial part of controlling its tissue and performance is that founding goes out best as-cast grain structure.Grain-size and form are the key characters of as-cast structure, and tiny and uniform equiax crystal is its best as-cast structure.Obtain this tissue, must be by different means crystal grain thinnings.The means of fining metal and alloy casting state tissue thereof comprise in liquid metal adds grain-refining agent or stops growth promoter, rapid solidification, the heterogeneous nucleus of removal to obtain high undercooling or by the kinetics thinning method of the broken dendrite of external energy (as mechanical vibration, induction stirring, ultrasonication etc.) etc.Through discovering of nearly half a century, under aluminium and alloy industry working condition thereof, adding Al-Ti-B master alloy fining agent in molten aluminium is to promote equiax crystal to form, suppress the column crystals growth and reduce dendrite interval, thereby obtains the easiest and effective treatment process of as-cast structure of even compact.
At present, the melt behind the interpolation Al-Ti-B master alloy, is poured into a mould after insulation for some time at once generally without any processing.Find through literature search prior art, the process for refining of mentioning in " temperature profile of AlTiB master alloy refinement behavior " that 1999 the 9th phase 12-14 pages or leaves of " casting " magazine are delivered adopts the Al-Ti-B master alloy to carry out, the technology of Al-Ti-B master alloy refinement fine aluminium generally comprises in temperature is 700～800 ℃ molten aluminium adds 0.1～1% Al-Ti-B master alloy, be incubated 1～10 minute and agitation as appropriate, pour into a mould then.Adopt this process for refining can bring into play the thinning effect of Al-Ti-B master alloy preferably, but after middle alloy adds molten aluminium, originally be the TiB of reunion shape within a short period of time
2Compound group is difficult to spread out, and its nucleation ability fails to be given full play to, and in aluminum products follow-up rolling man-hours that adds, the TiB of high rigidity
2Agglomerated masses easily scratches roll, also can occur perforation and various L﹠S line defect during rolling aluminium foil; Simultaneously, the TiAl of strip
3Be difficult to mutually dissolve fully, make that solute Ti can not uniform distribution in whole melt.Therefore, when adopting this process for refining, because thick TiAl
3The phased soln diffusion is incomplete, adhesion TiB
2Particle accumulation group disperses not open, thereby makes that the refinement efficient of Al-Ti-B master alloy is very low, with the commercial-purity aluminium as-cast grain size after this technology refinement generally all greater than 150 μ m.
In order to address the above problem, the present inventor provides a kind of novel process of Al-Ti-B master alloy refinement fine aluminium by research, has accelerated TiAl
3The dissolving velocity of diffusion of phase increases TiB
2The disperse distributed degrees of particle, thus the refinement efficient of Al-Ti-B master alloy improved.
The object of the present invention is to provide a kind of Al-Ti-B master alloy refinement fine aluminium technology.
Summary of the invention
Al-Ti-B master alloy refinement fine aluminium technology provided by the invention comprises the fine aluminium fusing, heats up, is incubated, adds Al-5Ti-1B master alloy, cast, wherein, introduces high-energy ultrasound on the molten aluminium top that adds the Al-5Ti-1B master alloy.
In a preferred implementation: the fine aluminium after will melting is warming up to 700～800 ℃, and is incubated 15 minutes.
In another preferred implementation: the addition of described Al-5Ti-1B master alloy is 0.1～0.5% of a fine aluminium weight.
In another preferred implementation: described high-energy ultrasonic wave frequency is 20 ± 1KHz, and power is 1000～5000W, and the treatment time is 1～5 minute.
The present invention applies high-energy ultrasonic and handles in the molten aluminium that adds Al-Ti-B master alloy fining agent, the acoustic cavitation and the acoustic streaming effect that produce when propagating in melt by means of high-energy ultrasound have been accelerated TiAl greatly
3The dissolving velocity of diffusion of phase, make its in a short period of time can be in melt uniform distribution; Can smash simultaneously the TiB of reunion shape
2Particle cluster makes its disperse distribution more in melt, thereby improves the nucleation efficient of Al-Ti-B master alloy.
Beneficial effect of the present invention is: than only using isodose Al-5Ti-1B master alloy refinement fine aluminium, adopt the commercial-purity aluminium as cast condition crystal grain after process for refining of the present invention is handled to be tiny equiax crystal, mean sizes can reduce more than the 30 μ m, not only improve the aluminium quality, and can satisfy the requirement of the follow-up rolling processing of aluminum products.
Embodiment
Below for a more detailed description with embodiment to the present invention.These embodiment only are the descriptions to best mode for carrying out the invention, scope of the present invention are not had any restriction.
Embodiment 1
Take by weighing the commercial-purity aluminium fusing, be warming up to 700 ℃ and be incubated 15 minutes, the Al-5Ti-1B master alloy that will take by weighing by 0.3% of commercial-purity aluminium weight adds in 700 ℃ the commercial-purity aluminium melt, be 20KHz in molten aluminium top pull-in frequency then, power is the high-energy ultrasound of 3000W, continues ultrasonic vibration and handles 3 minutes.
Embodiment 2
Embodiment is with embodiment 1, and wherein the molten aluminium temperature is 730 ℃, and the addition of Al-5Ti-1B is 0.2%, and the high-energy ultrasonic wave frequency is 21KHz, and power is 2000W, and the lasting treatment time is 2 minutes.
Embodiment 3
Embodiment is with embodiment 1, and wherein the molten aluminium temperature is 760 ℃, and the addition of Al-5Ti-1B is 0.5%, and the high-energy ultrasonic wave frequency is 19KHz, and power is 5000W, and the lasting treatment time is 5 minutes.
Embodiment 4
Embodiment is with embodiment 1, and wherein the molten aluminium temperature is 780 ℃, and the addition of Al-5Ti-1B is 0.1%, and the high-energy ultrasonic wave frequency is 20KHz, and power is 1000W, and the lasting treatment time is 1 minute.
Embodiment 5
Embodiment is with embodiment 1, and wherein the molten aluminium temperature is 800 ℃, and the addition of Al-5Ti-1B is 0.4%, and the high-energy ultrasonic wave frequency is 19KHz, and power is 4000W, and the lasting treatment time is 4 minutes.
Comparative example 1
Take by weighing commercial-purity aluminium fusing, be warming up to 760 ℃ and be incubated 15 minutes, take by weighing the Al-5Ti-1B master alloy, it is added in commercial-purity aluminium melt by 0.5% of commercial-purity aluminium weight.
Comparative example 2
Take by weighing commercial-purity aluminium fusing, be warming up to 800 ℃ and be incubated 15 minutes, take by weighing the Al-5Ti-1B master alloy, it is added in commercial-purity aluminium melt by 0.4% of commercial-purity aluminium weight.
The test example
To pour into by the molten aluminium of embodiment 1-5 and comparative example 1-2 process for refining gained respectively in 100 ℃ the Reynolds standard golf T pattern, measure grain-size apart from 51mm place, sample bottom surface with intercept method.Test-results sees Table 1.
Table 1 embodiment 1-5 and comparative example 1-2 process for refining
Gained commercial-purity aluminium grain-size (μ m)
| The postindustrial fine aluminium grain-size of refinement | |
| Embodiment 1 | 100 |
| Embodiment 2 | 95 |
| Embodiment 3 | 80 |
| Embodiment 4 | 140 |
| Embodiment 5 | 90 |
| Comparative example 1 | 170 |
| Comparative example 2 | 185 |
Comparing embodiment 5 and comparative example 2 are found than only using isodose Al-5Ti-1B master alloy refinement fine aluminium, adopt the fine aluminium as-cast grain size after process for refining of the present invention is handled can reduce more than the 30 μ m.
Therefore adopt Al-Ti-B master alloy refinement fine aluminium technology of the present invention, promptly in molten aluminium, add in the Al-Ti-B master alloy, in conjunction with the high-energy ultrasonic vibration treatment, can improve the refinement efficient of Al-Ti-B master alloy, make fine aluminium as cast condition average grain size after the refinement all below 150 μ m, improved the aluminium quality greatly.
Claims (6)
1, a kind of Al-Ti-B master alloy refinement fine aluminium technology, this method comprise the fine aluminium fusing, heat up, are incubated, add Al-5Ti-1B master alloy, cast, it is characterized in that, introduce high-energy ultrasound on the molten aluminium top that adds the Al-5Ti-1B master alloy.
2, Al-Ti-B master alloy refinement fine aluminium technology according to claim 1 is characterized in that, the fine aluminium after the fusing is warming up to 700～800 ℃.
3, Al-Ti-B master alloy refinement fine aluminium technology according to claim 1, wherein said soaking time is 15 minutes.
4, Al-Ti-B master alloy refinement fine aluminium technology according to claim 1, the addition of wherein said Al-5Ti-1B master alloy is 0.1～0.5% of a fine aluminium weight.
5, Al-Ti-B master alloy refinement fine aluminium technology according to claim 1, wherein said high-energy ultrasonic wave frequency is 20 ± 1KHz, power is 1000～5000W.
6, Al-Ti-B master alloy refinement fine aluminium technology according to claim 1 or 5, the treatment time of wherein said high-energy ultrasound is 1～5 minute.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100938801A CN101328549A (en) | 2007-06-22 | 2007-06-22 | Refining process of Al-Ti-B intermediate alloy for pure aluminum |
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|---|---|---|---|
| CNA2007100938801A CN101328549A (en) | 2007-06-22 | 2007-06-22 | Refining process of Al-Ti-B intermediate alloy for pure aluminum |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102212727A (en) * | 2011-06-10 | 2011-10-12 | 山东理工大学 | Authigenic quasicrystal-reinforced Mg-Zn-Y alloy and smelting method thereof |
| CN102274956A (en) * | 2011-08-31 | 2011-12-14 | 西南铝业（集团）有限责任公司 | Method for refining grains of 2219 alloy major-diameter round billets |
| CN102703738A (en) * | 2012-05-17 | 2012-10-03 | 上海交通大学 | Preparation method of Al-Ti-B-C quaternary grain refiner |
| CN102912192A (en) * | 2012-09-03 | 2013-02-06 | 浙江中金铝业有限公司 | 1050 alloy CTO (computer-to-plate) substrate and preparation method thereof |
| CN103586431A (en) * | 2013-11-19 | 2014-02-19 | 中南大学 | Method for producing CTP substrate blank by introducing ultrasonic field cast-rolling method |
| CN106191571A (en) * | 2016-08-16 | 2016-12-07 | 中国科学院宁波材料技术与工程研究所 | Aluminum alloy anode material, its preparation method and application thereof |
| CN107586978A (en) * | 2017-09-27 | 2018-01-16 | 吉林大学 | The method of aluminum grain refinement |
| CN108543924A (en) * | 2018-05-15 | 2018-09-18 | 深圳市奥力压铸五金制品有限公司 | A kind of running gate system and its die-casting process of abnormity optical fiber module evacuated die-casting process |
| CN110358948A (en) * | 2019-06-11 | 2019-10-22 | 上海交通大学 | A kind of aluminium-titanium diboride-phosphorus intermediate alloy and preparation method thereof |
| CN111378849A (en) * | 2018-12-27 | 2020-07-07 | 南京理工大学 | Preparation method of industrial pure aluminum conductor |
| CN112609094A (en) * | 2020-11-30 | 2021-04-06 | 中国科学院金属研究所 | Preparation method of aluminum alloy with efficiently refined grains |
| CN113025851A (en) * | 2021-03-02 | 2021-06-25 | 安徽省金兰金盈铝业有限公司 | High-strength high-damping wrought aluminum and preparation method thereof |
-
2007
- 2007-06-22 CN CNA2007100938801A patent/CN101328549A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102212727A (en) * | 2011-06-10 | 2011-10-12 | 山东理工大学 | Authigenic quasicrystal-reinforced Mg-Zn-Y alloy and smelting method thereof |
| CN102212727B (en) * | 2011-06-10 | 2012-12-12 | 山东理工大学 | Authigenic quasicrystal-reinforced Mg-Zn-Y alloy and smelting method thereof |
| CN102274956A (en) * | 2011-08-31 | 2011-12-14 | 西南铝业（集团）有限责任公司 | Method for refining grains of 2219 alloy major-diameter round billets |
| CN102703738A (en) * | 2012-05-17 | 2012-10-03 | 上海交通大学 | Preparation method of Al-Ti-B-C quaternary grain refiner |
| CN102912192B (en) * | 2012-09-03 | 2014-11-26 | 浙江中金铝业有限公司 | 1050 alloy CTO (computer-to-plate) substrate and preparation method thereof |
| CN102912192A (en) * | 2012-09-03 | 2013-02-06 | 浙江中金铝业有限公司 | 1050 alloy CTO (computer-to-plate) substrate and preparation method thereof |
| CN103586431A (en) * | 2013-11-19 | 2014-02-19 | 中南大学 | Method for producing CTP substrate blank by introducing ultrasonic field cast-rolling method |
| CN106191571A (en) * | 2016-08-16 | 2016-12-07 | 中国科学院宁波材料技术与工程研究所 | Aluminum alloy anode material, its preparation method and application thereof |
| CN106191571B (en) * | 2016-08-16 | 2018-07-03 | 中国科学院宁波材料技术与工程研究所 | Aluminum alloy anode material, preparation method and its application |
| CN107586978A (en) * | 2017-09-27 | 2018-01-16 | 吉林大学 | The method of aluminum grain refinement |
| CN108543924A (en) * | 2018-05-15 | 2018-09-18 | 深圳市奥力压铸五金制品有限公司 | A kind of running gate system and its die-casting process of abnormity optical fiber module evacuated die-casting process |
| CN111378849A (en) * | 2018-12-27 | 2020-07-07 | 南京理工大学 | Preparation method of industrial pure aluminum conductor |
| CN110358948A (en) * | 2019-06-11 | 2019-10-22 | 上海交通大学 | A kind of aluminium-titanium diboride-phosphorus intermediate alloy and preparation method thereof |
| CN112609094A (en) * | 2020-11-30 | 2021-04-06 | 中国科学院金属研究所 | Preparation method of aluminum alloy with efficiently refined grains |
| CN113025851A (en) * | 2021-03-02 | 2021-06-25 | 安徽省金兰金盈铝业有限公司 | High-strength high-damping wrought aluminum and preparation method thereof |
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