CN102703772A - Method for preparing ZL114A aluminum alloy semi-solid slurry by using pulsed magnet field - Google Patents
Method for preparing ZL114A aluminum alloy semi-solid slurry by using pulsed magnet field Download PDFInfo
- Publication number
- CN102703772A CN102703772A CN2012101884443A CN201210188444A CN102703772A CN 102703772 A CN102703772 A CN 102703772A CN 2012101884443 A CN2012101884443 A CN 2012101884443A CN 201210188444 A CN201210188444 A CN 201210188444A CN 102703772 A CN102703772 A CN 102703772A
- Authority
- CN
- China
- Prior art keywords
- magnetic field
- pulsed magnetic
- zl114a
- semi
- solid slurry
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
The invention discloses a method for preparing ZL114A aluminum alloy semi-solid slurry by using a pulsed magnet field. The method comprises the following steps of: pouring a molten ZL114A aluminum alloy melt into a preheated preparation device; reducing the temperature to 0 to 30 DEG C above the liquidus temperature; applying the pulsed magnet field to the ZL114A alloy melt for oscillation treatment, wherein the frequency of the pulsed magnet field is 1 to 15Hz, the voltage of the pulsed magnet field is 10 to 250V, the cooling rate of the alloy melt is 0.1 to 2 DEG C/s when the melt is treated by using the pulsed magnet field, and the treatment temperature range of the pulsed magnet field is 0 to 30 DEG C above an alloy liquidus; finishing the treatment of the pulsed magnet field till the temperature of 5 to 35 DEG C below the liquidus, wherein the treatment time of the pulsed magnet field is 0.5 to 6 minutes, and the concrete treatment time and the final treatment temperature are determined according to the requirement of a product on the solid fraction; and preserving heat for 1 to 5 minutes to obtain a finished product. The process is simple, efficient and low in energy consumption; and by the method, high-quality ZL114A aluminum alloy semi-solid slurry can be prepared.
Description
Technical field
The present invention relates to a kind of method for preparing the ZL114A aluminium alloy semi-solid slurry with pulsed magnetic field.
Background technology
Owing to have unique advantages such as product quality and performances height, energy saving technology, nearly (only) are shaped, it is one of technological that semi-solid state forming technique is described as the metal material processing of tool future of 21 century.Semi-solid state forming technique is divided into thixotropic forming and rheological molding two big classes.No matter be thixotropic forming or rheological molding; All include semi-solid state slurrying and semi-solid-state shaping two portions; Wherein, Slurrying is the basis of whole process and crucial, how to stablize, prepare effectively have rounding, semi solid slurry tiny, uniform non-dendritic structure becomes the semi-solid processing hot research fields.Main preparation method of semisolid state slurry thereof has at present: mechanical mixing method, electromagnetic stirring method, stress-induced melt activation method (SIMA), near liquidus casting, high-energy ultrasonic vibratory drilling method etc.All kinds of pulping process respectively have characteristics, but also just rest on the laboratory study stage at present mostly, in industry, obtain to use seldom.Therefore the preparation and the forming technique of new semi-solid metal slurry still need be proposed, so that simplify technology, reduce production costs, realize large-scale industrial production.
Summary of the invention
The object of the present invention is to provide a kind ofly to prepare the method for ZL114A aluminium alloy semi-solid slurry with pulsed magnetic field, it is simple that it has technology, and energy consumption and cost are low, utilize this method can obtain economy, quick, efficient, fine ZL114A aluminium alloy semi-solid slurry.
The present invention realizes like this, a kind ofly prepares the method for ZL114A aluminium alloy semi-solid slurry with pulsed magnetic field, and the composition of ZL114A duraluminum content by weight is Si 6.5%～7.0%; Mg 0.55%～0.60%, and Ti 0.1%～0.2%, and Be 0.04%～0.07%; Fe 0.12%, other 0.30%, surplus is Al; It is characterized in that said preparation method: melted ZL114A aluminium alloy melt is poured in the good Stainless Steel Crucible of preheating, is cooled to above 0～30 ℃ of liquidus temperature again; The unbalanced pulse field generator for magnetic applies the pulsed magnetic field oscillation treatment to the ZL114A alloy melt then, and wherein, the pulsed magnetic field frequency is 1～15Hz; Pulsed magnetic field voltage is 10～250V, and when pulsed magnetic field was handled, the speed of cooling of alloy melt was 0.1～2 ℃/s; The pulsed magnetic field temperature ranges is above 0～30 ℃ of an alloy liquid phase line, handles to 5～35 ℃ of end pulsed magnetic fields below the liquidus line, and the pulsed magnetic field treatment time is 0.5～6 minute; Concrete treatment time and end treatment temperature are decided the needs of solid rate according to product, and then after being incubated 1～5 minute, obtain semi-solid alloy slurry; Said pulsed magnetic field frequency is best with 10Hz; Said pulsed magnetic field voltage is best with 250V; The said pulsed magnetic field treatment time was the best with 2.5 minutes; After the pulsed magnetic field processing finished, said alloy liquation soaking time was the best with 3 minutes.
Technique effect of the present invention is: the present invention not only technology is simple, high-efficiency low energy consumption, and adopt the present invention can prepare fine ZL114A aluminium alloy semi-solid slurry; It is tiny that it has a primary phase grain structure, the near spherical semi solid slurry that is evenly distributed, and equipment is simple; Easy to operation; Safe and reliable, practice thrift cost and investment, three-waste free pollution.
Description of drawings
Fig. 1 prepares the apparatus structure synoptic diagram of ZL114A aluminium alloy semi-solid slurry for pulsed magnetic field of the present invention.
Fig. 2 is the influence linear relationship chart of the different pulsed magnetic field frequencies of the present invention to the microstructure of ZL114A aluminium alloy semi-solid slurry.
Fig. 3 is the influence linear relationship chart of the different pulsed magnetic field voltages of the present invention to the microstructure of ZL114A aluminium alloy semi-solid slurry.
Fig. 4 is the micro-organization chart of the final ZL114A aluminium alloy semi-solid slurry that obtains.
Thermopair in the drawings, 1; 2, alloy melt chamber; 3, Stainless Steel Crucible 4, ceramic protective sleeve 5, process furnace 6, pulsed magnetic field generation coil.
Embodiment
Below in conjunction with embodiment and accompanying drawing the present invention is done detailed elaboration,
The ZL114A duraluminum is melted in resistance furnace 5, be warming up to 730 ℃ in alloy melt chamber 2, refining, degasification also are incubated 10 minutes, then an amount of alloy liquation are poured in the good Stainless Steel Crucible of preheating 3.Utilize thermopair 1 and process furnace 5 controlled temperature, the alloy melt temperature is controlled at about 630 ℃, 6 pairs of alloy liquations of coil take place and carry out the pulsed magnetic field oscillation treatment in unbalanced pulse magnetic field.The pulsed magnetic field processing parameter is: pulsed magnetic field voltage is 250V, and the pulsed magnetic field frequency is 10Hz.The speed of cooling of alloy liquation is 0.1～2 ℃/s.Treatment time is 2.5 minutes.When treating that temperature drops to 600 ℃ of left and right sides, after the end pulsed magnetic field is handled, and then after being incubated 3 minutes, obtain the ZL114A aluminium alloy semi-solid slurry.
Cooled sample is cut open perpendicular to axis on the edge, middle part, at the cross-section center position sample preparation metallographic specimen of 1/2 height.After grinding, polishing, select three aqueous acid (HNO for use
3: 2.5 %; HCl: 1.5 %; HF: 1 %; H
2O: 95 %) sample after the polishing is carried out the corrosion of 10-25s.With its tissue of scanning electron microscopic observation, Application of I mage Pro Plus 6.0 carries out picture processing and quantitative analysis, and significant parameter is equivalent diameter and average roundness coefficient.
It is 250V that embodiment 1 sets pulsed magnetic field voltage; The pulsed magnetic field frequency is 3Hz, 6Hz, 10Hz and 15Hz; The pulsed magnetic field treatment time is 2.5 minutes; Processing is incubated 3 minutes after finishing.
It is 10Hz that embodiment 2 sets the pulsed magnetic field frequency; Pulsed voltage is for being 150V, 200V and 250V; The pulsed magnetic field treatment time is 2.5 minutes; Processing is incubated 3 minutes after finishing.
It is 10Hz that embodiment 3 sets the pulsed magnetic field frequency; Pulsed magnetic field voltage is 250V; The magnetic field treatment time is 1.5 minutes, 2.5 minutes and 6 minutes; Processing is incubated 3 minutes after finishing.
It is 10Hz that embodiment 4 sets the pulsed magnetic field frequency; Pulsed magnetic field voltage is 250V; The magnetic field treatment time is 2.5 minutes; Processing is incubated 1 minute, 3 minutes and 5 minutes after finishing.
As shown in Figure 2, when the pulsed magnetic field frequency was lower than 10Hz, along with the increase of frequency, the equivalent diameter of primary phase obviously reduced and the average roundness coefficient enlarges markedly.But when frequency was higher than 10Hz, the equivalent diameter of looks increased, and the average roundness coefficient reduces to some extent.
As shown in Figure 3, along with the increase of pulsed magnetic field voltage, the equivalent diameter of primary phase constantly descends, the obvious refinement that size obtains, and the average roundness coefficient enlarges markedly, shape is tending towards rounding.
In sum; Can find out from Fig. 2, Fig. 3; The desirable processing parameter that pulsed magnetic field prepares the ZL114A aluminium alloy semi-solid slurry is: pulsed magnetic field voltage is 250V, and the pulsed magnetic field frequency is 10Hz, and the pulsed magnetic field treatment time is 2.5 minutes; After processing finished, the semi solid slurry soaking time was 3 minutes.Adopt the semi solid slurry of this optimal processing parameter preparation; The equivalent diameter of characteristic primary phase as shown in Figure 4 is 92.1 μ m; The average roundness coefficient is 0.58, be a kind of fine primary phase crystal grain tiny, be evenly distributed and be torulose ZL114A aluminium alloy semi-solid slurry.
Claims (6)
1. one kind prepares the method for ZL114A aluminium alloy semi-solid slurry with pulsed magnetic field, and the composition of ZL114A duraluminum content by weight is Si 6.5%～7.0%, and Mg 0.55%～0.60%, and Ti 0.1%～0.2%; Be 0.04%～0.07%, and Fe 0.12%, and other are 0.30% years old; Surplus is Al, it is characterized in that, said preparation method: melted ZL114A aluminium alloy melt is poured in the good preparation facilities of preheating; Be cooled to above 0～30 ℃ of liquidus temperature again, then the ZL114A alloy melt applied the pulsed magnetic field oscillation treatment, wherein; The pulsed magnetic field frequency is 1～15Hz, and pulsed magnetic field voltage is 10～250V, when pulsed magnetic field is handled; The speed of cooling of alloy melt is 0.1～2 ℃/s, and the pulsed magnetic field temperature ranges is above 0～30 ℃ of an alloy liquid phase line, to the processing of 5～35 ℃ of end pulsed magnetic fields below the liquidus line; The pulsed magnetic field treatment time is 0.5～6 minute, and then after being incubated 1～5 minute, obtains semi-solid alloy slurry.
2. method for preparing the ZL114A aluminium alloy semi-solid slurry with pulsed magnetic field; It is characterized in that said preparation facilities comprises thermopair, alloy melt chamber, Stainless Steel Crucible, ceramic protective sleeve, process furnace, pulsed magnetic field generation coil, the indoor thermopair that is provided with of alloy melt; The outdoor Stainless Steel Crucible that is with of alloy melt; Be provided with ceramic protective sleeve around the Stainless Steel Crucible outside, ceramic protective sleeve is provided with process furnace around the outside, and the process furnace outside is provided with pulsed magnetic field generation coil.
3. as claimed in claim 1ly a kind ofly prepare the method for ZL114A aluminium alloy semi-solid slurry with pulsed magnetic field, it is characterized in that: said pulsed magnetic field frequency is preferably 10Hz.
4. as claimed in claim 1ly a kind ofly prepare the method for ZL114A aluminium alloy semi-solid slurry with pulsed magnetic field, it is characterized in that: said pulsed magnetic field voltage is preferably 250V.
5. as claimed in claim 1ly a kind ofly prepare the method for ZL114A aluminium alloy semi-solid slurry with pulsed magnetic field, it is characterized in that: the said pulsed magnetic field treatment time is preferably 2.5 minutes.
6. as claimed in claim 1ly a kind ofly prepare the method for ZL114A aluminium alloy semi-solid slurry with pulsed magnetic field, it is characterized in that: after the pulsed magnetic field processing finished, said alloy liquation soaking time was preferably 3 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101884443A CN102703772A (en) | 2012-06-11 | 2012-06-11 | Method for preparing ZL114A aluminum alloy semi-solid slurry by using pulsed magnet field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101884443A CN102703772A (en) | 2012-06-11 | 2012-06-11 | Method for preparing ZL114A aluminum alloy semi-solid slurry by using pulsed magnet field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102703772A true CN102703772A (en) | 2012-10-03 |
Family
ID=46896817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101884443A Pending CN102703772A (en) | 2012-06-11 | 2012-06-11 | Method for preparing ZL114A aluminum alloy semi-solid slurry by using pulsed magnet field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102703772A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103586442A (en) * | 2013-11-20 | 2014-02-19 | 上海大学 | Device capable of continuously measuring temperature of metal melt in pulse magnetic oscillation processing technology |
| CN104152775A (en) * | 2014-08-21 | 2014-11-19 | 南昌航空大学 | Long-periodic structure reinforced magnesium alloy semi-solid slurry and preparation method thereof |
| CN104264088A (en) * | 2014-10-16 | 2015-01-07 | 中南大学 | Aging strengthening method for aluminum alloy by utilizing electromagnetic field |
| CN108160956A (en) * | 2018-01-24 | 2018-06-15 | 东北大学 | The control method and device of particle coarsening behavior in a kind of liquid/solid two-phase system |
| CN114850418A (en) * | 2022-05-31 | 2022-08-05 | 福州大学 | Semi-solid slurry preparation process and device capable of realizing multilayer stirring |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1772414A (en) * | 2004-11-10 | 2006-05-17 | 北京有色金属研究总院 | Composite electromagnetic stirring process of preparing semi-solid metal slurry continuously |
| CN101508010A (en) * | 2009-02-26 | 2009-08-19 | 清华大学 | Quantitative preparation method of semi-solid metal pulp by over-heat electromagnetically stirring |
-
2012
- 2012-06-11 CN CN2012101884443A patent/CN102703772A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1772414A (en) * | 2004-11-10 | 2006-05-17 | 北京有色金属研究总院 | Composite electromagnetic stirring process of preparing semi-solid metal slurry continuously |
| CN101508010A (en) * | 2009-02-26 | 2009-08-19 | 清华大学 | Quantitative preparation method of semi-solid metal pulp by over-heat electromagnetically stirring |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103586442A (en) * | 2013-11-20 | 2014-02-19 | 上海大学 | Device capable of continuously measuring temperature of metal melt in pulse magnetic oscillation processing technology |
| CN104152775A (en) * | 2014-08-21 | 2014-11-19 | 南昌航空大学 | Long-periodic structure reinforced magnesium alloy semi-solid slurry and preparation method thereof |
| CN104264088A (en) * | 2014-10-16 | 2015-01-07 | 中南大学 | Aging strengthening method for aluminum alloy by utilizing electromagnetic field |
| CN104264088B (en) * | 2014-10-16 | 2017-03-01 | 中南大学 | A kind of method of utilization electromagnetic field ageing strengthening aluminium alloy |
| CN108160956A (en) * | 2018-01-24 | 2018-06-15 | 东北大学 | The control method and device of particle coarsening behavior in a kind of liquid/solid two-phase system |
| CN108160956B (en) * | 2018-01-24 | 2020-01-10 | 东北大学 | Method and device for controlling coarsening behavior of particles in liquid/solid two-phase system |
| CN114850418A (en) * | 2022-05-31 | 2022-08-05 | 福州大学 | Semi-solid slurry preparation process and device capable of realizing multilayer stirring |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Zhang et al. | Wire arc additive manufacturing of Al-6Mg alloy using variable polarity cold metal transfer arc as power source | |
| CN103586431B (en) | A kind of method introducing ultrasonic field casting and roll process production CTP version base stock | |
| CN102703772A (en) | Method for preparing ZL114A aluminum alloy semi-solid slurry by using pulsed magnet field | |
| CN103469136B (en) | The preparation method of the TC11 titanium alloy cake material that a kind of fatigue strength is high | |
| CN105312525B (en) | Method for reducing ingot type segregation of 40Cr cold heading steel wire rod | |
| CN108642392B (en) | Low-carbon high-chromium alloy steel powder for laser additive manufacturing and preparation method thereof | |
| CN102179505B (en) | Method for refining metal solidification structure by using pulsed magnet field and pulse current with same frequency | |
| CN102703898A (en) | Method for refining solidified structure of laser cladding layer by using alternating magnetic field and device thereof | |
| CN101186989B (en) | Method for preparing AZ61 magnesium alloy half-solid blank using ultrasonic wave | |
| CN108823440A (en) | A kind of preparation method and application of hypoeutectic al-si alloy slab | |
| CN109971980A (en) | The method for improving CrCoNi medium entropy alloy mechanical property using magnetic field | |
| CN111534772A (en) | Preparation method of TC4 titanium alloy finished bar with short process and low cost | |
| CN109161742A (en) | A kind of 7085 aluminium alloys and preparation method thereof adulterating Sc | |
| CN103162550B (en) | A kind for the treatment of apparatus and method of casting use metal bath | |
| CN102642001A (en) | Electromagnetic casting process for 5754 aluminum alloy | |
| CN106623819A (en) | Prepration method for semisolid alloy slurry | |
| CN108213383B (en) | Semi-solid slurry preparation method and device | |
| CN107282687B (en) | A kind of preparation method of Ti6Al4V titanium alloy fine grain bar | |
| CN108588540B (en) | Method for manufacturing nuclear power 1Cr15Ni36W3Ti alloy forged and rolled bar | |
| CN102409187A (en) | Method and equipment for preparing semi-solid metal slurry/blank with current | |
| CN106555066B (en) | A method of preparing high-performance richness iron secondary aluminium with micro compound additive | |
| CN102644011A (en) | Aluminium alloy semi-solid preform body and preparation method thereof | |
| CN101817067B (en) | Method for producing seamless stainless steel tube by centrifugally pouring hollow billet | |
| CN109666831A (en) | A kind of free machining aluminium alloy cast ingot of the low resistance of deformation of major diameter and its preparation process | |
| CN108998703A (en) | From the preparation method for breeding stick and preparation method thereof He hypoeutectic al-si alloy semi solid slurry |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121003 |