CN103131920A - High-strength aluminum alloy metamorphosing through carbonyl V (CO) 6 and preparation method thereof - Google Patents
High-strength aluminum alloy metamorphosing through carbonyl V (CO) 6 and preparation method thereof Download PDFInfo
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- CN103131920A CN103131920A CN2011103981104A CN201110398110A CN103131920A CN 103131920 A CN103131920 A CN 103131920A CN 2011103981104 A CN2011103981104 A CN 2011103981104A CN 201110398110 A CN201110398110 A CN 201110398110A CN 103131920 A CN103131920 A CN 103131920A
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Abstract
The invention discloses a high-strength aluminum alloy metamorphosing through carbonyl V (CO) 6 and a preparation method of the high-strength aluminum alloy metamorphosing through the carbonyl V (CO) 6. The high-strength aluminum alloy metamorphosing through the carbonyl V (CO) 6 comprises, by weight, <=1ppm of beryllium, 2.0%-2.5% of copper, <=0.03% of manganese, 1.0%-1.2% of magnesium, <=0.01% of chromium, 0.01%-0.03% of nickel, 1.5%-1.8% of zinc, <=0.06% of titanium, <=0.05% of boron, carbonyl V (CO) 6 accounting for 0.1%-0.3% of the total amount, and the balance aluminum and unavoidable trace impurities, wherein a single trace impurity accounts for <=0.03% of the total amount and the total trace impurities account for <=0.15%. Compared with normal aluminum and aluminum alloy, the high-strength aluminum alloy metamorphosing through the carbonyl V (CO) 6 is smaller in grain structure and higher in purity degree.
Description
Technical field
The present invention relates to a kind of aluminum alloy materials and preparation method thereof, particularly a kind of carbonyl compound V (CO)
6Rotten high performance aluminium materials and preparation method thereof.
Background technology
Metamorphism can greatly improve comprehensive mechanical performance and the chemical stability index of aluminium alloy, sometimes or even subversive.Can produce metamorphic material and be called alterant.
Nearly all alterant all concentrates on a kind of technique means at present: contain the master alloy of alterant element take aluminium as matrix production, then in when aluminium alloy smelting, master alloy being added melt.
This process has produced two in energy-conservation disadvantageous link: the founding link that 1. contains the master alloy of high density alterant element, often need very high temperature (＞1000 ℃, as Al-Ti-B, Al-RE, Al-Si, Al-Sc, Al-V, Al-Cr, Al-Mn, Al-Co, Al-Ni, Al-W, Al-Zr etc.); 2. add master alloy during aluminium alloy smelting, " dissolving " be " dilution " alterant element also, then casting.
Concerning aluminium alloy was produced, how said process had been equivalent to " melting-casting " link, and in master alloy, a large amount of aluminium only plays the effect that stores alterant element, and its energy that consumes is invalid fully.
In various aluminium intermediate alloy alterants, the most representative is Al-Ti-B wire rod and aluminium-rare-earth (RE) master alloy.Along with going deep into of research, increasing element is found to have metamorphism, has also just produced increasing master alloy.For aluminum alloy smelting factory, in order to be absorbed in the production of terminal alloy product, to there is no need special investment and build the master alloy production line, and would rather be from the market purchasing master alloy.So the factory of special production aluminium intermediate alloy has just been arranged, and formed industrial scale, whole world aluminium intermediate alloy industry reaches billions of units at present.
Based on the theoretical thinking of aluminium intermediate alloy, the following condition of additive that adds as alterant limits:
(1) at high temperature chemical composition is constant, and enough stability is arranged in molten aluminium;
(2) fusing point of additive should be than the height of aluminium;
(3) lattice of additive and aluminium should adapt on scantlings of the structure;
(4) form powerful adsorption bond with processed melt atom.
These restricted conditions good as if special are made to measure for the aluminium intermediate alloy of hot metal element, so have limited the connotation and extension of " going bad " concept.
Simultaneously, the effective element in the aluminium intermediate alloy alterant is difficult to play one's part to the full.
Although the matrix of master alloy is also aluminium, when producing master alloy, the process of high-melting-point element, indissoluble solution element and aluminium generation alloying is very rambunctious: the scaling loss amount increase of the segregation of effective element, aluminium and sneaking into of a large amount of impurity, all can hardly be avoided.Limit the quantity of for impurity and require very strict high performance alloys production, often the impurity brought into of alterant just is enough to make Chemical Composition surpass limited field; Simultaneously, under microstate, a large amount of effective alterant elements of assembling still are in homojunction colony bulk state, (＜800 ℃) can't dissolve fully and melt at all at the temperature of molten aluminum, only have surface rete as thin as a wafer to play the part metamorphism owing to may producing alloying reaction with aluminium, all the other a large amount of state of aggregations are all just how to add how to exist, metamorphism thereby have a greatly reduced quality.
In actual production, the problem that often occurs is that the rotten ability of alterant is unstable, the ratio fluctuation range that alterant adds is large, be not easy accurately to grasp addition, the as easy as rolling off a log harmful element of sneaking in the aluminium intermediate alloy process of making the high temperature element, have a significant impact end product quality simultaneously.
Summary of the invention
Technical problem to be solved by this invention is, for the defective of aluminum current alloy inoculant and metamorphic mechanism existence, with carbonyl compound V (CO)
6As efficient alterant, join in alloy melt with protective gas in the fluidization mode, by discharging the alterant element V of atom or ionic condition with aluminium alloy melt generation chemical reaction or pyrolytic decomposition, produce simultaneously the CO-free radical, can absorb and remove the detrimental impurity such as H and O element in melt, reach the purpose that efficiently, evenly goes bad and purify melt, realize the grain refining of matrix and metal compound phase; And the replacement master alloy in aluminium alloy is produced, cut down the number of intermediate links, energy-saving and cost-reducing.
Technical scheme of the present invention is, a kind of carbonyl compound V (CO)
6Rotten high performance aluminium materials, by weight percentage, this alloying constituent is Be :≤1ppm, Cu:2.0 ~ 2.5%, Mn :≤0.03%, Mg:1.0 ~ 1.2%, Cr :≤0.01%, Ni:0.01 ~ 0.03%, Zn:1.5 ~ 1.8%, Ti :≤0.06%, B :≤0.05%, carbonyl compound V (CO)
6Alterant is 0.1～0.3% of total amount, and all the other are Al and inevitable trace impurity, and impurity content is: single≤0.03% adds up to≤0.15%.
Carbonyl compound V (CO)
6Rotten high performance aluminium materials, carbonyl compound V (CO)
6The molecular crystal state of aggregation granularity of alterant is 20～100 orders.
Carbonyl compound V (CO)
6The preparation method of rotten high performance aluminium materials comprises the steps:
Step 1: in above-mentioned element ratio scope, a selected group element and carbonyl compound V (CO)
6Alterant ratio, then the alloy total amount of preparation are as required extrapolated the quality of every kind of required elemental metals, establishment alloy production allocation sheet, and get the raw materials ready by allocation sheet choosing foot;
Step 2: add aluminium ingot or molten aluminum liquid in smelting furnace, heating makes it to melt fully and insulation under 700～800 ℃; Melting process is completed in enclosed environment;
Step 3: first add the selected alloying element of step 1 by formula rate again, make it dissolve fully and melt, mixed melt is stirred;
Step 4: then above-mentioned alloy melt is carried out furnace refining; Add refining agent in alloy melt, and stir, the melt refining operates in enclosed environment;
Step 5: after the refining slagging-off, with protective gas nitrogen, melt is carried out the degasification operation, make simultaneously carbonyl compound V (CO)
6Alterant joins in alloy melt with protective gas nitrogen in the fluidization mode; Stir simultaneously, alterant and alloy melt are fully reacted; Alterant adds complete, continues to pass into protective gas nitrogen complete to the alterant reaction;
Step 6: standing, temperature adjustment to 700～800 ℃, aluminium alloy are toppled over and are come out of the stove, and enter subsequent processing.
Compared with prior art, the present invention has following major advantage:
1, carbonyl compound V (CO)
6The molecular crystal alterant adds aluminium alloy melt with the protective gas fluidization, has solved technologic great difficult problem.
2, not only improved the modification effect of aluminum alloy modifier, for efficient in producing, high precision are controlled the condition of having created, and the carbonyl radical CO-that goes out of molecular breakdown can absorb the harmful elements such as H, O in melt, purify melt, thereby the effect of alterant and scavenging agent is organically combined.
3, effectively refinement aluminum substrate crystal grain and the metallic compound crystal grain such as Fe, Si, having significantly improved pure aluminum alloy is intensity and unit elongation performance.
4, replace master alloy, make aluminium alloy manufacturing concern no longer be limited by the master alloy manufacturer, be conducive to create the intensive production line of " nearly moulding, short flow process ", energy-saving and cost-reducing, reduce comprehensive cost.
Rotten reaction equation is as follows:
V (CO)
6+ e (high temperature) → V (atomic state)+C (atomic state)+O (atomic state)+CO (free radical)
V+Al (liquid) → α (Al) is solution → saturated solution → cooling → supersaturated solid solution altogether altogether
V+Al (saturated solution altogether) → Al
21V
2+ Al
45V
7+ Al
23V
4+ Al
3V+Al
8V
5
C (atomic state)+Al (liquid) → Al
4C
3(compound)
O (atomic state)+H (molten aluminium) → H
2O (gas)
CO (free radical)+2H (molten aluminium) → H
2O (gas)+C (atomic state)
C (atomic state)+H (molten aluminium) → CH
4(gas).
Embodiment
Embodiment 1
Step 1, by the selected group element of formula, by weight: this alloying constituent is Cu:2.0%, Mg:1.0%,, Ni:0.01%, Zn:1.5%, carbonyl compound V (CO)
6Alterant is 0.3% of total amount, and all the other are Al and inevitable trace impurity, and wherein inevitably trace impurity, Si and Fe are by the impurity that brings in raw material, and impurity content is: single≤0.03%, add up to≤0.15%, Si :≤0.5%, Fe :≤0.5%; The alloy total amount of preparation is 1000kg, and the weight of extrapolating every kind of required material is: Cu:20kg, Mg:10kg, Ni:0.1kg, Zn:15kg, V (CO)
6: 3kg, Al:951.9kg;
Step 2: first add aluminium ingot or molten aluminum liquid in smelting furnace, heating makes it to melt fully and insulation under 700～800 ℃; Melting process is completed in enclosed environment;
Step 3: first add the selected alloying element of step 1 by formula rate again, make it dissolve fully and melt, mixed melt is stirred;
Step 4: then above-mentioned alloy melt is carried out furnace refining; Add refining agent in alloy melt, and stir, the melt refining operates in enclosed environment;
Step 5: after the refining slagging-off, with protective gas nitrogen, melt is carried out the degasification operation, make simultaneously carbonyl compound V (CO)
6Molecular crystal alterant (20 order) joins in alloy melt with protective gas nitrogen in the fluidization mode; Stir simultaneously, alterant and alloy melt are fully reacted; Alterant adds complete, continues to pass into protective gas complete to the alterant reaction;
Step 6: standing, temperature adjustment to 700～800 ℃, aluminium alloy are toppled over and are come out of the stove, and enter subsequent processing.
Embodiment 2
By the selected group element of formula, by weight: this alloying constituent is Be:0.5ppm, Cu:2.25%, Mn:0.015%, Mg:1.1%, Cr:0.005%, Ni:0.02%, Zn:1.75%, Ti:0.03%, B:0.025%, carbonyl compound V (CO)
6Alterant is 0.2% of total amount, and all the other are Al and inevitable trace impurity, and wherein inevitably trace impurity, Si and Fe are by the impurity that brings in raw material, and impurity content is: single≤0.03%, add up to≤0.15%, Si :≤0.5%, Fe :≤0.5%; The alloy total amount of preparation is 1000kg, and the weight of extrapolating every kind of required material is: Be:5 * 10
-6Kg, Cu:22.5kg, Mn:0.15kg, Mg:11kg, Cr:0.05kg, Ni:0.2kg, Zn:17.5kg, Ti:0.3kg, B:0.25kg, V (CO)
6: 2kg, Al:946.32kg;
All the other steps are with embodiment 1, wherein carbonyl compound V (CO)
6The molecular crystal alterant is 60 orders.
Embodiment 3
By the selected group element of formula, by weight: this alloying constituent is Be:1ppm, Cu:2.5%, Mn:0.03%, Mg:1.2%, Cr:0.01%, Ni:0.03%, Zn:1.8%, Ti:0.06%, B:0.05%, carbonyl compound V (CO)
6Alterant is 0.1% of total amount, and all the other are Al and inevitable trace impurity, and wherein inevitably trace impurity, Si and Fe are by the impurity that brings in raw material, and impurity content is: single≤0.03%, add up to≤0.15%, Si :≤0.5%, Fe :≤0.5%; The alloy total amount of preparation is 1000kg, and the weight of extrapolating every kind of required material is: Be:1 * 10
-5Kg, Cu:25kg, Mn:0.3kg, Mg:12kg, Cr:0.1kg, Ni:0.3kg, Zn:18kg, Ti:0.6kg, B:0.5kg, V (CO)
6: 1kg, Al:942.2kg;
All the other steps are with embodiment 1, wherein carbonyl compound V (CO)
6The molecular crystal alterant is 100 orders.
Claims (3)
1. a carbonyl compound V (CO)
6Rotten high performance aluminium materials, it is characterized in that: by weight percentage, this alloying constituent is Be :≤1ppm, Cu:2.0 ~ 2.5%, Mn :≤0.03%, Mg:1.0 ~ 1.2%, Cr :≤0.01%, Ni:0.01 ~ 0.03%, Zn:1.5 ~ 1.8%, Ti :≤0.06%, B :≤0.05%, carbonyl compound V (CO)
6Alterant is 0.1～0.3% of total amount, and all the other are Al and inevitable trace impurity, and impurity content is: single≤0.03% adds up to≤0.15%.
2. carbonyl compound V according to claim 1 (CO)
6Rotten high performance aluminium materials is characterized in that: carbonyl compound V (CO)
6The molecular crystal state of aggregation granularity of alterant is 20～100 orders.
3. a carbonyl compound V as claimed in claim 2 (CO)
6The preparation method of rotten high performance aluminium materials is characterized in that: comprise the steps:
Step 1: in above-mentioned element ratio scope, a selected group element and carbonyl compound V (CO)
6Alterant ratio, then the alloy total amount of preparation are as required extrapolated the quality of every kind of required elemental metals, establishment alloy production allocation sheet, and get the raw materials ready by allocation sheet choosing foot;
Step 2: add aluminium ingot or molten aluminum liquid in smelting furnace, heating makes it to melt fully and insulation under 700～800 ℃; Melting process is completed in enclosed environment;
Step 3: first add the selected alloying element of step 1 by formula rate again, make it dissolve fully and melt, mixed melt is stirred;
Step 4: then above-mentioned alloy melt is carried out furnace refining; Add refining agent in alloy melt, and stir, the melt refining operates in enclosed environment;
Step 5: after the refining slagging-off, with protective gas nitrogen, melt is carried out the degasification operation, make simultaneously carbonyl compound V (CO)
6Alterant joins in alloy melt with protective gas nitrogen in the fluidization mode; Stir simultaneously, alterant and alloy melt are fully reacted; Alterant adds complete, continues to pass into protective gas nitrogen complete to the alterant reaction;
Step 6: standing, temperature adjustment to 700～800 ℃, aluminium alloy are toppled over and are come out of the stove, and enter subsequent processing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110398110.4A CN103131920B (en) | 2011-12-05 | 2011-12-05 | A kind of carbonyl compound V (CO) 6rotten high performance aluminium materials and preparation method thereof |
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|---|---|---|---|
| CN201110398110.4A CN103131920B (en) | 2011-12-05 | 2011-12-05 | A kind of carbonyl compound V (CO) 6rotten high performance aluminium materials and preparation method thereof |
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| CN103131920B CN103131920B (en) | 2016-03-30 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101144134A (en) * | 2007-10-15 | 2008-03-19 | 李贞宽 | Aluminum-silicon series deforming alloy and manufacturing method thereof |
| CN101532861A (en) * | 2009-04-17 | 2009-09-16 | 周岳建 | A method for manufacturing water meter housing by high strength cast aluminum alloy and a product thereof |
| JP2010159488A (en) * | 2008-12-09 | 2010-07-22 | Sumitomo Light Metal Ind Ltd | Method for molding 2,000 series aluminum alloy material, and formed product molded by the same |
| CN102127667A (en) * | 2010-11-29 | 2011-07-20 | 长沙朗圣实验室设备有限公司 | Aluminium alloy section and manufacture method thereof |
-
2011
- 2011-12-05 CN CN201110398110.4A patent/CN103131920B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101144134A (en) * | 2007-10-15 | 2008-03-19 | 李贞宽 | Aluminum-silicon series deforming alloy and manufacturing method thereof |
| JP2010159488A (en) * | 2008-12-09 | 2010-07-22 | Sumitomo Light Metal Ind Ltd | Method for molding 2,000 series aluminum alloy material, and formed product molded by the same |
| CN101532861A (en) * | 2009-04-17 | 2009-09-16 | 周岳建 | A method for manufacturing water meter housing by high strength cast aluminum alloy and a product thereof |
| CN102127667A (en) * | 2010-11-29 | 2011-07-20 | 长沙朗圣实验室设备有限公司 | Aluminium alloy section and manufacture method thereof |
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Granted publication date: 20160330 Termination date: 20161205 |