CN1789448A - Grain refiner for synthesis of aluminium alloy by laser ignited self-propagation and method for preparing the same - Google Patents
Grain refiner for synthesis of aluminium alloy by laser ignited self-propagation and method for preparing the same Download PDFInfo
- Publication number
- CN1789448A CN1789448A CN 200510200747 CN200510200747A CN1789448A CN 1789448 A CN1789448 A CN 1789448A CN 200510200747 CN200510200747 CN 200510200747 CN 200510200747 A CN200510200747 A CN 200510200747A CN 1789448 A CN1789448 A CN 1789448A
- Authority
- CN
- China
- Prior art keywords
- powder
- grain
- laser
- synthesis
- propagation
- 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
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000015572 biosynthetic process Effects 0.000 title claims description 10
- 238000003786 synthesis reaction Methods 0.000 title claims description 10
- 239000000843 powder Substances 0.000 claims abstract description 23
- 238000007670 refining Methods 0.000 claims abstract description 20
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- 229910052796 boron Inorganic materials 0.000 claims abstract description 10
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 10
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052786 argon Inorganic materials 0.000 claims abstract description 4
- 238000010304 firing Methods 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims abstract description 4
- 229910000048 titanium hydride Inorganic materials 0.000 claims abstract 3
- 239000003795 chemical substances by application Substances 0.000 claims description 20
- 238000002360 preparation method Methods 0.000 claims description 19
- 239000002245 particle Substances 0.000 claims description 11
- 239000011812 mixed powder Substances 0.000 claims description 4
- 238000005303 weighing Methods 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 abstract description 16
- 230000000694 effects Effects 0.000 abstract description 8
- 238000002156 mixing Methods 0.000 abstract description 3
- 230000007423 decrease Effects 0.000 abstract description 2
- 230000002194 synthesizing effect Effects 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 description 14
- 239000000956 alloy Substances 0.000 description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 14
- 239000004411 aluminium Substances 0.000 description 12
- 150000001875 compounds Chemical class 0.000 description 9
- 239000006025 fining agent Substances 0.000 description 7
- 229910010038 TiAl Inorganic materials 0.000 description 4
- 239000007771 core particle Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000013078 crystal Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005923 long-lasting effect Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000002667 nucleating agent Substances 0.000 description 2
- 230000006911 nucleation Effects 0.000 description 2
- 238000010899 nucleation Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 229910017150 AlTi Inorganic materials 0.000 description 1
- 229910020491 K2TiF6 Inorganic materials 0.000 description 1
- 229910020261 KBF4 Inorganic materials 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- 239000000274 aluminium melt Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910001512 metal fluoride Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- -1 salt compounds Chemical class 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000003832 thermite Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
Abstract
The invention relates grain refiner used for synthesizing aluminum alloy by laser firing and preparing method. The grain refiner comprises Al, Ti and B. The method comprises the following steps: mixing the Al, Ti, B and TiH2 powers with blending attachment, adding the powders into die and pressing them to preformed sample, after evacuating and filling argon gas, utilizing the laser to carry out self-propagating reaction of preformed sample and get grain refiner. The grain refiner possesses good refining effect and decline-resistant capability. The invention suits for aluminum alloy handling field.
Description
Technical field
The invention belongs to metal material field, particularly relate to a kind of aluminium and aluminium alloy with novel grain-refining agent and preparation method.
Background technology
At present, aluminium and aluminum grain refinement help tissue and chemical ingredients even; Significantly improve the mechanical property and the process industrial art performance of aluminium; It is the important channel of improving the aluminium quality.The method of crystal grain thinning is a lot, but adds that the nucleating agent method has the efficient height, cost is low and advantage such as simple and easy to do, widespread use in modern industry is produced.Extensively adopt a kind of AlTiB master alloy of effectively refinement aluminium grain both at home and abroad in the aluminum products industry.
The AlTiB master alloy prepares the method that adopts and mainly contains following several: thermite reduction alkaline metal fluoride cpd (K2TiF6 and KBF4) method, with pure potassium titanate and potassium fluoborate working system, with oxide compound thermal reduction-remelting dilution two-step approach of Ti, B and electrolytic method, two kinds contain direct introducing TiB in the liquid master alloy hybrid system of Ti/B, the AlTi master alloy
2Method etc.The finished product grain-refining agent of prepared in various methods is mainly salt block agent, master alloy piece and master alloy silk.
Salt block agent thinning effect instability, long-lasting poor, because the oxidization burning loss of Ti, B element is serious, composition is difficult to strict control, and causes casting flaws such as slag inclusion, pore in Al-alloy products easily, and toxic gas is emitted, severe corrosion equipment worsens labor condition.Ingot shape AlTiB master alloy is much more superior than the salt compounds fining agent, but still exist many problems: compound is mutually thick in the ingot shape master alloy, and exist the problem of compound gravity segregation, after middle alloy refinement agent joins in the molten aluminium with ingot shape form, easily cause TiB
2, TiAl
3Particle distribution is inhomogeneous, TiB
2Particle easily deposits.That more and more widely adopt at present, is thread AlTiB.Thread AlTiB master alloy in use also has some unsatisfactory shortcomings, for example: can form TiB in the Al-Ti-B manufacturing processed
2Agglomerate or form loose TiB
2Aggregation can not fully decompose after adding melt, they or be deposited on the chute bottom, perhaps block filter disc and influence thinning effect; TiB
2Size of particles is bigger, easily forms surface scratch and damage roller surface in aluminium foil and printed base plate, also can exert an influence to some shells, as: scratch mould, form cut, striped etc. at product surface; Some contain the aluminium alloy of Zr, Cr owing to make TiB
2Particle is caused big crystal grain or tissue odds by the clean Shen of Man; Only have 1～2% compound particle to play the effect of heterogeneous nucleus in the master alloy, the compound more than 98% is nucleation not, and compound forming core potential is also brought into play far away; The metallurgical quality of AlTiB master alloy is poor, the inclusion content height, join in the aluminium for the treatment of refinement and the alloy thereof after, in the refinement aluminium grain, also polluted aluminium and alloy thereof, bring a series of side effects.
Summary of the invention
Purpose of the present invention just provides a kind of composition cleaning, good in refining effect, long lasting synthesis of aluminium alloy by laser ignited self-propagation with grain-refining agent and preparation method.
Technical solution of the present invention is, a kind of synthesis of aluminium alloy by laser ignited self-propagation grain-refining agent, and by mass percentage, Al is 30-70%, and Ti and B are 30-70%, and wherein, Ti and B mol ratio are 4: 1-5: 1.
Described grain-refining agent particle spherical in shape, diameter are 5-8mm.
Prepare the method for a kind of synthesis of aluminium alloy by laser ignited self-propagation, may further comprise the steps with grain-refining agent:
A. at first by mass percentage, take by weighing Al powder 30-70%, Ti powder 30-60.5%, B powder 2.5-5.0%, TiH
2The raw material of powder 3-5.5% mixed 1-3 hour;
B. claim mixed powder to pour in the mould, use external force with its compacting, making density is 2.5-2.8mg/mm
3Pre-sample preparation;
C. pre-sample preparation places reaction chamber, is evacuated down to 10
-3-10
-5Behind the Pa, charge into argon gas, utilize laser that pre-sample preparation is ignited to 101-105KPa, laser-induced combustion power is 1000-1200W, and be 1.5-3.0S ignitor firing time, after pre-sample preparation is ignited, rely on himself reaction liberated heat and keep reaction and proceed, reaction finishes and obtains grain-refining agent.
Described Al powder is the 200-400 order, and the Ti powder is the 200-400 order, and the B powder is the 200-400 order, TiH
2Powder is 100-200um.
Pre-sample preparation is cylindrical, and diameter is 5-8mm, highly is 6-10mm.
The invention has the beneficial effects as follows: the fining agent of the present invention's preparation is a diameter 5-8mm spherical particle, is convenient to thinning process and realizes autofeed.Because the forming core particle TiAl in the fining agent
3, TiB
2Be to synthesize and introducing whipping agent TiH in preparation process by high-temp in-situ
2Make particle discrete, thereby fining agent has following characteristics: the first, the forming core particle has very high thermodynamic stability, and the second, the forming core particle dia is little, and the 3rd, the forming core particle distributes in the nucleating agent inner height disperse of being rich in micropore; The 4th, compound is TiAl
3And TiB
2, fining agent is pure.These characteristics has given this fining agent stronger anti-grain refining decline ability, has given full play to nucleation ability, TiAl
3And TiB
2The size of two kinds of compounds is tiny, and number increases considerably, and the compound particles number that finally participates in forming core also increases good in refining effect with corresponding.TiB
2Be distributed in the fining agent matrix so that the particle of submicron order is isolated, i.e. 0.4-0.9um, and size is even, because the TiB of preparation
2Have very high thermodynamic stability, these synthetic AlTiB is joined in pyritous aluminium and the aluminum alloy melt, Al matrix wherein can be melted fast by aluminium liquid, and TiB
2Particle then can be uniformly distributed in the aluminium liquid, plays the heterogeneous central role of a-Al, obtains the good tissue of thinning effect after solidifying.
Embodiment
The present invention is further illustrated below in conjunction with embodiment.
Take by weighing 300 order Al powder 238g, 300 order Ti powder 224g, 300 order B powder 13g, 200umTiH
2Powder 25g; Automatically mix on the powder machine and mixed powder 2 hours, make the mixed powder can thorough mixing;
Take by weighing the powder that 500mg mixes and add in the cylindrical die, being pressed into density is 2.79mg/mm
3Cylindrical pre-sample preparation, its diameter is 6mm, highly is 6mm.
Prefabricated sample places reaction chamber, is evacuated to 10
-4Behind the Pa, charge into argon gas to 102KPa, utilize laser-induced combustion, the power that ignites is 1200W, and be 1.5S ignitor firing time, carries out self-propagating reaction, thereby prepare grain-refining agent.
The grain-refining agent that employing obtains according to above-mentioned technology adds in the fine aluminium melt by 0.15% add-on, can access grain-size after solidifying less than 150 microns tissue.
Claims (5)
1. a synthesis of aluminium alloy by laser ignited self-propagation grain-refining agent is characterized in that, by mass percentage, Al is 30-70%, and Ti and B are 30-70%, and wherein, Ti and B mol ratio are 4: 1-5: 1.
2. a kind of synthesis of aluminium alloy by laser ignited self-propagation grain-refining agent according to claim 1 is characterized in that particle spherical in shape, diameter are 5-8mm.
3. prepare the method for the described a kind of synthesis of aluminium alloy by laser ignited self-propagation of claim 1, it is characterized in that, may further comprise the steps with grain-refining agent:
A. at first by mass percentage, take by weighing the raw material of Al powder 30-70%, Ti powder 30-60.5%, B powder 2.5-5.0%, TiH2 powder 3-5.5%, mixed 1-3 hour;
B. claim mixed powder to pour in the mould, use external force with its compacting, making density is the pre-sample preparation of 2.5-2.8mg/mm3;
C. pre-sample preparation places reaction chamber, after being evacuated down to 10-3-10-5Pa, charge into argon gas to 101-105KPa, utilize laser that pre-sample preparation is ignited, laser-induced combustion power is 1000-1200W, and be 1.5-3.0S ignitor firing time, after pre-sample preparation is ignited, rely on himself reaction liberated heat and keep reaction and proceed, reaction finishes and obtains grain-refining agent.
4. a kind of synthesis of aluminium alloy by laser ignited self-propagation according to claim 3 is characterized in that with the preparation method of grain-refining agent the Al powder is the 200-400 order, and the Ti powder is the 200-400 order, and the B powder is the 200-400 order, and the TiH2 powder is 100-200um.
5. a kind of synthesis of aluminium alloy by laser ignited self-propagation according to claim 3 is characterized in that with the preparation method of grain-refining agent pre-sample preparation is cylindrical, and diameter is 5-8mm, highly is 6-10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510200747 CN1789448A (en) | 2005-11-28 | 2005-11-28 | Grain refiner for synthesis of aluminium alloy by laser ignited self-propagation and method for preparing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510200747 CN1789448A (en) | 2005-11-28 | 2005-11-28 | Grain refiner for synthesis of aluminium alloy by laser ignited self-propagation and method for preparing the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1789448A true CN1789448A (en) | 2006-06-21 |
Family
ID=36787570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510200747 Pending CN1789448A (en) | 2005-11-28 | 2005-11-28 | Grain refiner for synthesis of aluminium alloy by laser ignited self-propagation and method for preparing the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1789448A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102071330A (en) * | 2011-01-24 | 2011-05-25 | 大连理工大学 | Long-service-life aluminum-silicon alloy grain refiner and preparation method thereof |
| CN102784905A (en) * | 2012-06-08 | 2012-11-21 | 北京工业大学 | Al-Ti-C-Er refiner and preparation method |
| WO2017176463A1 (en) * | 2016-04-07 | 2017-10-12 | First Solar, Inc. | Devices and methods for making polycrystalline alloys |
| CN107900340A (en) * | 2017-12-14 | 2018-04-13 | 东莞理工学院 | A kind of method and its heap-type mould using metal dust processing boss |
| CN109704746A (en) * | 2019-02-28 | 2019-05-03 | 滁州市博瑞特工贸有限公司 | A kind of preparation method of magnetic ferrites |
| CN109750188A (en) * | 2019-03-21 | 2019-05-14 | 孟静 | Aluminum alloy doors and windows production method |
| CN109777990A (en) * | 2019-03-21 | 2019-05-21 | 孟静 | Aluminium alloy preparation method |
| CN109852836A (en) * | 2019-03-21 | 2019-06-07 | 孟静 | Aluminium alloy castings preparation method |
| CN109868387A (en) * | 2019-03-21 | 2019-06-11 | 孟静 | Aluminium alloy preparation facilities |
-
2005
- 2005-11-28 CN CN 200510200747 patent/CN1789448A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102071330A (en) * | 2011-01-24 | 2011-05-25 | 大连理工大学 | Long-service-life aluminum-silicon alloy grain refiner and preparation method thereof |
| CN102784905A (en) * | 2012-06-08 | 2012-11-21 | 北京工业大学 | Al-Ti-C-Er refiner and preparation method |
| WO2017176463A1 (en) * | 2016-04-07 | 2017-10-12 | First Solar, Inc. | Devices and methods for making polycrystalline alloys |
| US11207731B2 (en) | 2016-04-07 | 2021-12-28 | First Solar, Inc. | Devices and methods for making polycrystalline alloys |
| CN107900340A (en) * | 2017-12-14 | 2018-04-13 | 东莞理工学院 | A kind of method and its heap-type mould using metal dust processing boss |
| CN109704746A (en) * | 2019-02-28 | 2019-05-03 | 滁州市博瑞特工贸有限公司 | A kind of preparation method of magnetic ferrites |
| CN109704746B (en) * | 2019-02-28 | 2021-09-28 | 滁州市博瑞特工贸有限公司 | Preparation method of magnetic ferrite |
| CN109750188A (en) * | 2019-03-21 | 2019-05-14 | 孟静 | Aluminum alloy doors and windows production method |
| CN109777990A (en) * | 2019-03-21 | 2019-05-21 | 孟静 | Aluminium alloy preparation method |
| CN109852836A (en) * | 2019-03-21 | 2019-06-07 | 孟静 | Aluminium alloy castings preparation method |
| CN109868387A (en) * | 2019-03-21 | 2019-06-11 | 孟静 | Aluminium alloy preparation facilities |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1789448A (en) | Grain refiner for synthesis of aluminium alloy by laser ignited self-propagation and method for preparing the same | |
| CN101608270B (en) | Refiner of aluminium and aluminium alloy with high efficiency and low cost, and preparation method thereof | |
| CN101214546B (en) | Powder metallurgical method for preparing titanium-aluminium alloy target material | |
| CN100383268C (en) | Prepn process of composite Al-Ti-C grain refining agent for aluminium and aluminium alloy | |
| CN109182800B (en) | Grain refiner and preparation method and application thereof | |
| CN102424923B (en) | Al-Ti-B-rare earth(RE) grain refiner and preparation method thereof | |
| CN102363215A (en) | Method for preparing chromium aluminum alloy target by powder vacuum hot pressed sintering | |
| CN101205581A (en) | Secondary aluminum prepared by using Al-Ti-C-Sr alloy refiner and preparation thereof | |
| CN102644010A (en) | Al-Ti-B-Er refiner and preparation method thereof | |
| CN113025858B (en) | Mg-Al-Zn magnesium alloy with refined matrix phase and eutectic phase as well as preparation method and application thereof | |
| CN102041420A (en) | Magnesium-aluminum-titanium-carbon intermediate alloy and preparation method thereof | |
| CN101054637A (en) | Aluminum-silicon alloy alterative and manufacturing method thereof | |
| CN1245527C (en) | Method for producing Cr-Ti-V hydrogen storage alloys | |
| CN103131921A (en) | High-strength aluminum alloy processed through nickel carbide and preparation method thereof | |
| CN111451490B (en) | Metal type powder core wire material and preparation method and application thereof | |
| CN102534311A (en) | Aluminium calcium carbon grain refiner for Mg-Al series magnesium alloy and preparation method and application thereof | |
| CN1120894C (en) | AL-Ti-C crystal grain fining agent and its producing process | |
| CN1257784C (en) | Mixed copper-tin 10 powder and preparing method thereof | |
| JPH05195108A (en) | Production of agent for preparing micro- crystals | |
| CN116287799A (en) | Method for adjusting titanium element content in aluminum-silicon alloy melt | |
| CN102703741A (en) | Zn-Zr intermediate alloy and preparation method and application thereof | |
| RU2542191C1 (en) | Method of alloys manufacturing for aluminium alloys production | |
| US20220033934A1 (en) | Method for preparation of aluminum matrix composite | |
| CN102517477A (en) | Preparation methods of intermediate alloys of Al-Ti-B-N and Zn-Al-Ti-B-N and intermediate alloys obtained therethrough | |
| CN100507040C (en) | Mg-Al series alloy composite grain refiner and method for making same |
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 |