CN107779642A - A kind of preparation method of almag - Google Patents
A kind of preparation method of almag Download PDFInfo
- Publication number
- CN107779642A CN107779642A CN201711008823.9A CN201711008823A CN107779642A CN 107779642 A CN107779642 A CN 107779642A CN 201711008823 A CN201711008823 A CN 201711008823A CN 107779642 A CN107779642 A CN 107779642A
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- Prior art keywords
- aluminium
- alloy
- titanium
- almag
- rare earth
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Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/10—Alloys containing non-metals
- C22C1/1036—Alloys containing non-metals starting from a melt
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/10—Alloys containing non-metals
- C22C1/1036—Alloys containing non-metals starting from a melt
- C22C1/1047—Alloys containing non-metals starting from a melt by mixing and casting liquid metal matrix composites
- C22C1/1052—Alloys containing non-metals starting from a melt by mixing and casting liquid metal matrix composites by mixing and casting metal matrix composites with reaction
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0047—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents
- C22C32/0073—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents only borides
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/36—Alloys obtained by cathodic reduction of all their ions
Abstract
The invention provides a kind of preparation method of almag, first adds in aluminium cell aluminum oxide, titanium oxide, borax, cerium oxide, is electrolysed, produces the aluminium alloy of the titanium-horon rare earth containing Refining Elements；Then according to almag component requirements, the aluminium alloy of fine aluminium, pure magnesium, aluminum bronze intermediate alloy and titanium-horon rare earth is weighed；The aluminium alloy of fine aluminium, aluminum bronze intermediate alloy, titanium-horon rare earth is sequentially loaded into crucible, and is heated up with resistance furnace, after all melting, one layer of coverture being made up of potassium chloride and magnesium chloride is spread on liquid level；MAG block is added in crucible, MAG block is pressed into crucible bottom with bell jar, until it is completely melt；Then add aluminium chloride or zinc chloride carries out refinery by de-gassing；After refining terminates, stand, aluminium alloy is filtered by porous ceramic plate twice, cast.By polynary refinement, titanium, rare earth, boron element in enabling aluminum alloy to are evenly distributed the present invention, improve the stability of alloy mechanical performance, have good tensile strength.
Description
Technical field
The invention belongs to technical field of metal material, is related to a kind of preparation method of almag.
Background technology
In traditional casting magnalium bianry alloy, magnesium is the major components of alloy, and it has very big solid solubility in aluminium,
And magnesium atom radius ratio aluminium is big by 13%, after magnesium largely dissolves in α (Al) solid solution, α lattice is just set to produce larger distortion, therefore aluminium
Magnesium alloy has very high solution strengthening effect.With the increase of content of magnesium, the mechanical performance of alloy also dramatically increases, but works as magnesium amount
During more than 12%, due under the heat treatment condition in usual production, the β (Mg in alloy structure2Al3) can not mutually be completely dissolved into
α, it is greatly reduced its mechanical performance, therefore magnesium content is usually no more than 11.5% in alloy.Alloy designations are ZAlMg10 chemistry
Composition is (mass ratio) magnesium：9.5-11.0%, surplus are aluminium.The less stable of this alloy mechanical performance, after alloy quenching
Natrual ageing can be occurred during long-term use, the β crystal boundaries that hand down constantly are separated out and grown up, and are greatly reduced plasticity, when temperature exceedes
At 100 DEG C, ag(e)ing process will be greatly speeded up, so alloy is unsuitable for working at high temperature.In addition this alloy also has more significant
Stress corrosion inclination.Because Natural Aging Process will be substantially speeded up under stress, and fragility β phases are separated out in crystal boundary, make conjunction
Gold produces stress corrosion cracking (SCC) along crystal boundary.
The content of the invention
It is an object of the invention to provide a kind of preparation method of almag, to prepare intensity height, good toughness, mechanicalness
The stable almag of energy.
The technical solution adopted in the present invention is a kind of preparation method of almag, specifically to implement according to following steps：
Step 1, aluminum oxide, titanium oxide, borax, cerium oxide are added in aluminium cell, are electrolysed, produced containing refinement
The aluminium alloy of the titanium-horon rare earth of element；
Step 2, according to almag component requirements, fine aluminium, pure magnesium, aluminum bronze intermediate alloy and titanium made from step 1 are weighed
The aluminium alloy of boron rare earth；
Step 3, the aluminium alloy of fine aluminium, aluminum bronze intermediate alloy, titanium-horon rare earth is sequentially loaded into crucible, and with resistance furnace one
Heating is played, after all melting, one layer of coverture being made up of potassium chloride and magnesium chloride is spread on liquid level；
Step 4, MAG block is added in crucible, MAG block is pressed into crucible bottom with bell jar, until it is completely melt；Then plus
Enter aluminium chloride or zinc chloride carries out refinery by de-gassing；
Step 5, after refining terminates, stand, aluminium alloy is filtered by porous ceramic plate twice, cast.
The features of the present invention also resides in,
The element composition of the aluminium alloy of titanium-horon rare earth is in step 1：Ti 0.3%-0.5%, B 0.09%-0.12% is dilute
Native RE 0.4%-0.6%, remaining is aluminium, and above element mass percent sum is 100%.
Electrolyte used in electrolysis is made up of according to mass percent following raw material in step 1：Ice crystal 60%-80%, oxygen
Change aluminium 5%-20%, sodium chloride 15%-20%, above material quality percentage sum is 100%.
Ice crystal molecular proportion is 4.0-5.0.
Raw material is weighed in step 2 according to mass fraction Mg 5.5%-8.5%, Ti 0.3%-0.5%, B 0.09%-
0.12%, Cu 2.0%-3.5%, rare earth RE 0.4%-0.6%, remaining is aluminium, is calculated.
In step 4 when resistance furnace is warming up to 630-670 DEG C, MAG block is added.
When resistance furnace is warming up to 720-730 DEG C in step 4, aluminium chloride or zinc chloride are added.
The invention has the advantages that the present invention, by using polynary fining agent, the titanium, rare earth, boron in enabling aluminum alloy to are first
Element is evenly distributed, and produces a large amount of nucleus compounds, has refined the refinement that aluminium alloy crystal grain has given full play to polynary fining agent
Effect.Titanium and boron form titanium boron compound Dispersed precipitate in crystal boundary simultaneously, can effectively suppress the precipitation of β phases, improve alloy
The stability of mechanical performance, there is good tensile strength.
Embodiment
With reference to embodiment, the present invention is described in detail.
A kind of preparation method of almag of the present invention, specifically implements according to following steps：
Step 1, mass fraction is formed according to element：Ti 0.3%-0.5%, B 0.09%-0.12%, rare earth RE
0.4%-0.6%, remaining is aluminium, and aluminum oxide, titanium oxide, borax, cerium oxide are added in aluminium cell, are electrolysed, is produced
Go out the aluminium alloy of the titanium-horon rare earth containing Refining Elements.
Electrolyte used is made up of according to mass percent following raw material：Ice crystal 60%-80%, aluminum oxide 5%-
20%, sodium chloride 15%-20%, above material quality percentage sum are 100%.Ice crystal molecular proportion (NaF:AlF3 molecules
Than) it is 4.0-5.0.
Step 2, according to Mg 5.5%-8.5%, Ti 0.3%-0.5%, B 0.09%-0.12%, Cu 2.0%-
3.5%, rare earth RE 0.4%-0.6%, remaining calculates for the mass percent of aluminium and weighs fine aluminium, pure magnesium, aluminum bronze intermediate alloy
With step 1 made from titanium-horon rare earth aluminium alloy；
Step 3, the aluminium alloy of fine aluminium, aluminum bronze intermediate alloy, titanium-horon rare earth is sequentially loaded into crucible, and with resistance furnace one
Heating is played, after all melting, one layer of coverture being made up of potassium chloride and magnesium chloride is spread on liquid level；
Step 4, when resistance furnace is warming up to 630-670 DEG C, MAG block is added in crucible, MAG block is pressed into crucible with bell jar
Bottom, until it is completely melt；
Step 5, when resistance furnace is warming up to 720-730 DEG C, addition aluminium chloride or zinc chloride carry out refinery by de-gassing；
Step 6, after refining terminates, 10-20min is stood, aluminium alloy is filtered by porous ceramic plate twice, cast.
By using polynary fining agent, titanium, rare earth, boron element in enabling aluminum alloy to are evenly distributed the present invention, and produce
A large amount of nucleus compounds, have refined the refining effect that aluminium alloy crystal grain has given full play to polynary fining agent.Titanium and boron composition simultaneously
Titanium boron compound Dispersed precipitate can effectively suppress the precipitation of β phases, improve the stability of alloy mechanical performance, have in crystal boundary
There is good tensile strength.
Embodiment 1
Step 1, mass fraction is formed according to element：Ti 0.3%, B 0.09%, rare earth RE 0.4%, remaining is aluminium, will
Aluminum oxide, titanium oxide, borax, cerium oxide are added in aluminium cell, are electrolysed, produce the titanium-horon rare earth containing Refining Elements
Aluminium alloy.
Electrolyte used is made up of according to mass percent following raw material：Ice crystal 60%, aluminum oxide 5%, sodium chloride
15%, above material quality percentage sum is 100%
Step 2, according to Mg 5.5%, Ti 0.3%, B 0.09%, Cu 2.0%, rare earth RE 0.4%, remaining is aluminium
Mass percent calculates and weighs fine aluminium, the aluminium alloy of titanium-horon rare earth made from pure magnesium, aluminum bronze intermediate alloy and step 1；
Step 3, the aluminium alloy of fine aluminium, aluminum bronze intermediate alloy, titanium-horon rare earth is sequentially loaded into crucible, and with resistance furnace one
Heating is played, after all melting, one layer of coverture being made up of potassium chloride and magnesium chloride is spread on liquid level；
Step 4, when resistance furnace is warming up to 630 DEG C, MAG block is added in crucible, MAG block is pressed into crucible bottom with bell jar
Portion, until it is completely melt；
Step 5, when resistance furnace is warming up to 720 DEG C, addition aluminium chloride or zinc chloride carry out refinery by de-gassing；
Step 6, after refining terminates, 10min is stood, aluminium alloy is filtered by porous ceramic plate twice, cast.
Embodiment 2
Step 1, mass fraction is formed according to element：Ti 0.5%, B 0.12%, rare earth RE 0.6%, remaining is aluminium, will
Aluminum oxide, titanium oxide, borax, cerium oxide are added in aluminium cell, are electrolysed, produce the titanium-horon rare earth containing Refining Elements
Aluminium alloy.
Electrolyte used is made up of according to mass percent following raw material：Ice crystal 80%, aluminum oxide 20%, sodium chloride
20%, above material quality percentage sum is 100%
Step 2, according to Mg 8.5%, Ti 0.5%, B 0.12%, Cu 3.5%, rare earth RE 0.6%, remaining is aluminium
Mass percent calculates and weighs fine aluminium, the aluminium alloy of titanium-horon rare earth made from pure magnesium, aluminum bronze intermediate alloy and step 1；
Step 3, the aluminium alloy of fine aluminium, aluminum bronze intermediate alloy, titanium-horon rare earth is sequentially loaded into crucible, and with resistance furnace one
Heating is played, after all melting, one layer of coverture being made up of potassium chloride and magnesium chloride is spread on liquid level；
Step 4, when resistance furnace is warming up to 670 DEG C, MAG block is added in crucible, MAG block is pressed into crucible bottom with bell jar
Portion, until it is completely melt；
Step 5, when resistance furnace is warming up to 730 DEG C, addition aluminium chloride or zinc chloride carry out refinery by de-gassing；
Step 6, after refining terminates, 20min is stood, aluminium alloy is filtered by porous ceramic plate twice, cast.
Embodiment 3
Step 1, mass fraction is formed according to element：Ti 0.4%, B 0.1%, rare earth RE 0.5%, remaining is aluminium, will
Aluminum oxide, titanium oxide, borax, cerium oxide are added in aluminium cell, are electrolysed, produce the titanium-horon rare earth containing Refining Elements
Aluminium alloy.
Electrolyte used is made up of according to mass percent following raw material：Ice crystal 70%, aluminum oxide 10%, sodium chloride
18%, above material quality percentage sum is 100%
Step 2, according to Mg 7%, Ti 0.4%, B 0.1%, Cu 2.5%, rare earth RE 0.5%, remaining is the matter of aluminium
Amount percentage calculates and weighs fine aluminium, the aluminium alloy of titanium-horon rare earth made from pure magnesium, aluminum bronze intermediate alloy and step 1；
Step 3, the aluminium alloy of fine aluminium, aluminum bronze intermediate alloy, titanium-horon rare earth is sequentially loaded into crucible, and with resistance furnace one
Heating is played, after all melting, one layer of coverture being made up of potassium chloride and magnesium chloride is spread on liquid level；
Step 4, when resistance furnace is warming up to 650 DEG C, MAG block is added in crucible, MAG block is pressed into crucible bottom with bell jar
Portion, until it is completely melt；
Step 5, when resistance furnace is warming up to 725 DEG C, addition aluminium chloride or zinc chloride carry out refinery by de-gassing；
Step 6, after refining terminates, 15min is stood, aluminium alloy is filtered by porous ceramic plate twice, cast.
Claims (7)
1. a kind of preparation method of almag, it is characterised in that specifically implement according to following steps：
Step 1, aluminum oxide, titanium oxide, borax, cerium oxide are added in aluminium cell, is electrolysed, produced containing Refining Elements
Titanium-horon rare earth aluminium alloy；
Step 2, according to almag component requirements, it is dilute that fine aluminium, pure magnesium, aluminum bronze intermediate alloy and titanium boron made from step 1 are weighed
The aluminium alloy of soil；
Step 3, the aluminium alloy of fine aluminium, aluminum bronze intermediate alloy, titanium-horon rare earth is sequentially loaded into crucible, and with the raising of resistance furnace one
Temperature, after all melting, one layer of coverture being made up of potassium chloride and magnesium chloride is spread on liquid level；
Step 4, MAG block is added in crucible, MAG block is pressed into crucible bottom with bell jar, until it is completely melt；Then chlorine is added
Change aluminium or zinc chloride carries out refinery by de-gassing；
Step 5, after refining terminates, stand, aluminium alloy is filtered by porous ceramic plate twice, cast.
2. the preparation method of a kind of almag according to claim 1, it is characterised in that titanium boron is dilute in the step 1
The element of the aluminium alloy of soil forms：Ti 0.3%-0.5%, B 0.09%-0.12%, rare earth RE 0.4%-0.6%, remaining
For aluminium, above element mass percent sum is 100%.
3. the preparation method of a kind of almag according to claim 1, it is characterised in that institute is electrolysed in the step 1
It is made up of with electrolyte according to mass percent following raw material：Ice crystal 60%-80%, aluminum oxide 5%-20%, sodium chloride
15%-20%, above material quality percentage sum are 100%.
4. the preparation method of a kind of almag according to claim 3, it is characterised in that the ice crystal molecular proportion is
4.0-5.0。
5. the preparation method of a kind of almag according to claim 1, it is characterised in that weigh original in the step 2
Material is dilute according to mass fraction Mg 5.5%-8.5%, Ti 0.3%-0.5%, B 0.09%-0.12%, Cu 2.0%-3.5%
Native RE 0.4%-0.6%, remaining is aluminium, is calculated.
6. the preparation method of a kind of almag according to claim 1, it is characterised in that work as resistance in the step 4
When stove is warming up to 630-670 DEG C, MAG block is added.
7. the preparation method of a kind of almag according to claim 1, it is characterised in that work as resistance in the step 4
Stove is warming up to 720-730 DEG C, adds aluminium chloride or zinc chloride.
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| CN201711008823.9A CN107779642A (en) | 2017-10-25 | 2017-10-25 | A kind of preparation method of almag |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109989074A (en) * | 2019-05-14 | 2019-07-09 | 柳州坚瑞新材料科技有限公司 | A kind of improved almag preparation method |
| CN112899686A (en) * | 2021-01-19 | 2021-06-04 | 苏州创泰合金材料有限公司 | Preparation method of super-hydrophobic aluminum-magnesium alloy material |
Citations (3)
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| CN1693510A (en) * | 2005-05-18 | 2005-11-09 | 山东大学 | Aluminium zinc magnesium series alloy and its preparation technology |
| CN103266241A (en) * | 2013-02-06 | 2013-08-28 | 张秀玲 | Rare earth aluminum alloy conductor material and production method thereof |
| CN104722945A (en) * | 2013-12-18 | 2015-06-24 | 中国兵器科学研究院宁波分院 | Ultra-fine grain aluminum alloy gold welding wire and preparation method thereof |
-
2017
- 2017-10-25 CN CN201711008823.9A patent/CN107779642A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1693510A (en) * | 2005-05-18 | 2005-11-09 | 山东大学 | Aluminium zinc magnesium series alloy and its preparation technology |
| CN103266241A (en) * | 2013-02-06 | 2013-08-28 | 张秀玲 | Rare earth aluminum alloy conductor material and production method thereof |
| CN104722945A (en) * | 2013-12-18 | 2015-06-24 | 中国兵器科学研究院宁波分院 | Ultra-fine grain aluminum alloy gold welding wire and preparation method thereof |
Non-Patent Citations (2)
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| 代书华主编: "《有色金属冶金概论》", 30 September 2015, 北京：冶金工业出版社 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109989074A (en) * | 2019-05-14 | 2019-07-09 | 柳州坚瑞新材料科技有限公司 | A kind of improved almag preparation method |
| CN112899686A (en) * | 2021-01-19 | 2021-06-04 | 苏州创泰合金材料有限公司 | Preparation method of super-hydrophobic aluminum-magnesium alloy material |
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Application publication date: 20180309 |