CN101186989B - Method for preparing AZ61 magnesium alloy half-solid blank using ultrasonic wave - Google Patents
Method for preparing AZ61 magnesium alloy half-solid blank using ultrasonic wave Download PDFInfo
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- CN101186989B CN101186989B CN2007101687389A CN200710168738A CN101186989B CN 101186989 B CN101186989 B CN 101186989B CN 2007101687389 A CN2007101687389 A CN 2007101687389A CN 200710168738 A CN200710168738 A CN 200710168738A CN 101186989 B CN101186989 B CN 101186989B
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Abstract
Disclosed is a process which employs supersonic wave to prepare semi solid billets of AZ61 magnesium alloys. The process for preparation is that the magnesium alloys is heated in a well resistance furnace at a temperature of 590 DEG C-620 DEG C, the supersonic wave is introduced into the flux of the magnesium, treatment time of the supersonic is between 30s-120s and the output power of the supersonic is between 450W-900w. On vibration effect of the supersonic, the semi solid billets of AZ61 magnesium alloys are achieved. Technical effect of the invention is to employ the semi solid billets ofAZ61 magnesium alloys prepared by the invention, spherical semi solid slurry of AZ61 magnesium alloys which distribute adequately and has fine-grained structure is prepared in a very short time, and furthermore the invention is safe and reliable, simple in technique without waste pollution.
Description
Technical field
The present invention relates to a kind of method for preparing the AZ61 magnesium alloy semi-solid state blank with ultrasonic wave.
Background technology
Compare with conventional cast, many advantages such as that the Semi-Solid Metals Forming technology has is efficient, energy-conservation, near-net-shape production and drip molding performance height are called the working method of tool prospect of 21 century by brainstrust.Especially the semi-solid processing of magnesium alloy, defectives such as pore in the time of can reducing common pressure casting method greatly and produce the magnesium alloy component and shrinkage porosite are for the promotion and application on a large scale of magnesium alloy lay the first stone.Therefore, numerous scholars and enterprise carry out a large amount of research to the preparation method of magnesium alloy semisolid slurry, and its main preparation methods has at present: mechanical mixing method, electromagnetic stirring method, stress-induced melt activation method (SIMA), near liquidus casting, ultrasonic vibration method etc.Wherein ultrasonic vibration method is a kind of emerging semi-solid state pulping process, and it can promote the formation of nucleus, crystal grain thinning, and can prepare qualified semi solid slurry at short notice.
Summary of the invention
The purpose of this invention is to provide and a kind ofly prepare the method for AZ61 magnesium alloy semi-solid state blank with ultrasonic wave, it can prepare the spherical semi-solid state AZ61 magnesium alloy slurry that grain structure is tiny, be evenly distributed at short notice.
The present invention is achieved like this, its magnesium alloy component content is Al 5.8%～7.2%, Mn is not less than 0.15%, Zn 0.40%～1.5%, Si 0.10%, and Cu 0.05%, and Ni 0.05%, Fe0.005%, other 0.30%, surplus is Mg, it is characterized in that the preparation method is: with magnesium alloy at well formula resistance furnace internal heating, in temperature is 590 ℃～620 ℃, in the ultrasonic importing AZ61 magnesium alloy fused mass, the supersound process time, ultrasonic output rating was 450W～900W at 30s～120s, under the ultrasonic vibration effect, make the AZ61 magnesium alloy semi-solid state blank.Temperature during described ultrasonic importing melt is good at 605 ℃; The supersound process time is good at 60s; Ultrasonic output rating is good at 900W.
Technique effect of the present invention is: adopt the AZ61 magnesium alloy semi-solid state blank of the present invention's preparation, it is tiny to prepare grain structure at short notice, the spherical semi-solid state AZ61 magnesium alloy slurry that is evenly distributed, and technology is simple, safe and reliable, three-waste free pollution.
Description of drawings
Fig. 1 is the influence of the ultrasonic importing temperature of the present invention to semi-solid state AZ61 alloy microtexture.
Fig. 2 is the influence of the variation of ultrasonic power of the present invention to semi-solid state AZ61 alloy microtexture
Embodiment
Ultrasonic vibration is to the influence of AZ61 magnesium alloy semi solid state tissue under different condition:
Embodiment 1: ultrasonic vibration imports semi-solid melt in differing temps, and 590 ℃, 605 ℃, 620 ℃ importings, the treatment time is controlled at 60s respectively, and ultrasonic output rating is 750W.
Embodiment 2: import the alloy melt temperature in ultrasonic vibration and be set at 605 ℃, ultrasonic output rating is set at 750W, and ultrasonic time is controlled at 30s, 60s, 90s, 120s respectively.
Embodiment 3: ultrasonic vibration imports the alloy melt temperature and is set in 605 ℃, and the supersound process time is 60s, and ultransonic output rating is respectively 450W, 600W, 750W, 900W.
From the sample that above three groups of tests obtain, intercept a part of sample from same area respectively, after corase grind, correct grinding, polishing, nital corrosion with 4%, in order to study the microstructure of AZ61 magnesium alloy semisolid slurry under different technical parameters better, utilize Image pro plus 5.01 metallurgical analysis softwares that microtexture is carried out picture processing and quantitative analysis, significant parameter is equivalent diameter (d) and roundness (f) parameter.
As shown in Figure 1, along with the reduction of ultrasonic importing temperature, ultrasonic vibration is to the fall off that influences of alloy melt, and nascent dendrite equivalent diameter is constantly grown up, during from 620 ℃
During to 590 ℃
Simultaneously, roundness also along with the reduction that imports temperature, reduces earlier afterwards to increase, when 605 ℃ to be reduced to 1.41.
As shown in Figure 2, the variation of ultrasonic power is to the rule that influences of semi-solid state AZ61 alloy microtexture, and along with the increase of ultrasonic power, equivalent diameter constantly descends, and roundness more levels off to 1, the obvious refinement that the product particle size obtains, and shape is tending towards rounding.
In sum, from Fig. 1, Fig. 2 as can be seen, the AZ61 magnesium alloy prepares the desirable processing parameter of semi-solid blank under ultrasonic vibration: the supersound process temperature is 605 ℃, and the supersound process time is 60s, ultrasonic output rating is 900W, and the equivalent diameter major part of its grain structure is positioned at
Between, and the circularity of grain structure is tiny, the uniform spherical semi-solid state AZ61 magnesium alloy slurries of ideal mainly in 1.2～1.6 scopes.
Claims (1)
1. method for preparing the AZ61 magnesium alloy semi-solid state blank with ultrasonic wave, its magnesium alloy component content is Al 5.8%～7.2%, Mn 0.15%, Zn 0.40%～1.5%, Si 0.10%Cu 0.05%, Ni 0.05%, Fe 0.005%, other 0.30%, surplus is Mg, it is characterized in that the preparation method is: with magnesium alloy at well formula resistance furnace internal heating, temperature is 590 ℃～620 ℃, and the interior supersound process time of ultrasonic importing AZ61 magnesium alloy fused mass, ultrasonic output rating was 450W～900W at 30s～120s, under the ultrasonic vibration effect, make the AZ61 magnesium alloy semi-solid state blank.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007101687389A CN101186989B (en) | 2007-12-10 | 2007-12-10 | Method for preparing AZ61 magnesium alloy half-solid blank using ultrasonic wave |
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| CN2007101687389A CN101186989B (en) | 2007-12-10 | 2007-12-10 | Method for preparing AZ61 magnesium alloy half-solid blank using ultrasonic wave |
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| Publication Number | Publication Date |
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| CN101186989A CN101186989A (en) | 2008-05-28 |
| CN101186989B true CN101186989B (en) | 2011-08-31 |
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| CN2007101687389A Expired - Fee Related CN101186989B (en) | 2007-12-10 | 2007-12-10 | Method for preparing AZ61 magnesium alloy half-solid blank using ultrasonic wave |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101418405B (en) * | 2008-10-31 | 2010-06-23 | 仝仲盛 | Method for manufacturing wrought magnesium alloy for high-speed extrusion |
| CN101406925B (en) * | 2008-11-18 | 2011-08-24 | 浙江大学 | Method for device for forming metal micro-thixotropy in semi-solid state assistant by supersonic vibration |
| CN101532099B (en) * | 2009-04-22 | 2011-01-19 | 南昌大学 | Method for preparing SiCp/AZ61 magnesium-based nano composite material using ultrasonic wave |
| CN101608277B (en) * | 2009-06-02 | 2010-07-07 | 大连理工大学 | Electromagnetic/ultrasonic preparation method of in-situ particle reinforced magnesium-based composite material |
| CN102776396B (en) * | 2012-05-29 | 2014-08-06 | 南昌大学 | Preparation method of in-situ Mg2Si particle enhanced Mg-Al-Mn-Zn composite material semi-solid slurry |
| CN103074530B (en) * | 2012-09-18 | 2014-10-29 | 南昌大学 | Preparation method of high-strength heat-resistant magnesium alloy |
| CN103909267B (en) * | 2014-03-26 | 2015-11-04 | 浙江大学 | Based on semi-solid-state metal powder forming device and the manufacturing process of ultrasonic vibration |
| CN105251951B (en) * | 2015-07-14 | 2017-09-08 | 南昌大学 | A kind of mischmetal induces the preparation method of pregnantization Al Si Cu alloy semi-solid slurries |
| CN114058890B (en) * | 2021-11-24 | 2022-04-19 | 西北工业大学 | Method for preparing Mg-Al-Zn-Mn-Cu multi-element alloy by three-dimensional ultrasonic combined sound field detection |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1405361A (en) * | 2002-10-31 | 2003-03-26 | 上海交通大学 | Magnesium alloy ultrasonic anode oxidation method |
| CN1618549A (en) * | 2003-11-20 | 2005-05-25 | 北京有色金属研究总院 | Method of preparing semi solid state moltem metal/blank by ultrasonic treatment to control solidification and its device |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1405361A (en) * | 2002-10-31 | 2003-03-26 | 上海交通大学 | Magnesium alloy ultrasonic anode oxidation method |
| CN1618549A (en) * | 2003-11-20 | 2005-05-25 | 北京有色金属研究总院 | Method of preparing semi solid state moltem metal/blank by ultrasonic treatment to control solidification and its device |
Non-Patent Citations (1)
| Title |
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| 胡勇等.镁合金半固态成形的现状及发展前景.现代制造工程.2006,(6),147-150. * |
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