CN101798649B - Compound 6013-type aluminum alloy microalloyed by zirconium and strontium and preparation method thereof - Google Patents
Compound 6013-type aluminum alloy microalloyed by zirconium and strontium and preparation method thereof Download PDFInfo
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 74
- 229910052726 zirconium Inorganic materials 0.000 title claims abstract description 25
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 229910052712 strontium Inorganic materials 0.000 title claims abstract description 13
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 title claims abstract description 8
- 238000002360 preparation method Methods 0.000 title abstract description 12
- 150000001875 compounds Chemical class 0.000 title 1
- 239000000956 alloy Substances 0.000 claims abstract description 67
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 66
- 229910018131 Al-Mn Inorganic materials 0.000 claims abstract description 8
- 229910018125 Al-Si Inorganic materials 0.000 claims abstract description 8
- 229910018461 Al—Mn Inorganic materials 0.000 claims abstract description 8
- 229910018520 Al—Si Inorganic materials 0.000 claims abstract description 8
- 229910018580 Al—Zr Inorganic materials 0.000 claims abstract description 8
- VHHHONWQHHHLTI-UHFFFAOYSA-N hexachloroethane Chemical compound ClC(Cl)(Cl)C(Cl)(Cl)Cl VHHHONWQHHHLTI-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000007670 refining Methods 0.000 claims abstract description 6
- 229910018182 Al—Cu Inorganic materials 0.000 claims abstract description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 29
- 229910052710 silicon Inorganic materials 0.000 claims description 25
- 239000010949 copper Substances 0.000 claims description 21
- 239000011777 magnesium Substances 0.000 claims description 20
- 239000011572 manganese Substances 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 18
- 150000003438 strontium compounds Chemical class 0.000 claims description 17
- 230000032683 aging Effects 0.000 claims description 15
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 11
- 229910052748 manganese Inorganic materials 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000004411 aluminium Substances 0.000 claims description 8
- 239000011701 zinc Substances 0.000 claims description 8
- 239000012535 impurity Substances 0.000 claims description 7
- 238000005242 forging Methods 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 5
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 5
- 238000000137 annealing Methods 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 5
- 229910052749 magnesium Inorganic materials 0.000 claims description 5
- VSZWPYCFIRKVQL-UHFFFAOYSA-N selanylidenegallium;selenium Chemical compound [Se].[Se]=[Ga].[Se]=[Ga] VSZWPYCFIRKVQL-UHFFFAOYSA-N 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- 239000002893 slag Substances 0.000 claims description 5
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 claims description 4
- 238000005260 corrosion Methods 0.000 abstract description 43
- 230000007797 corrosion Effects 0.000 abstract description 43
- 238000002844 melting Methods 0.000 abstract description 5
- 230000008018 melting Effects 0.000 abstract description 5
- 238000005266 casting Methods 0.000 abstract 1
- 238000004299 exfoliation Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 20
- 229910052742 iron Inorganic materials 0.000 description 18
- 229910000755 6061-T6 aluminium alloy Inorganic materials 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- 238000010998 test method Methods 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 230000003628 erosive effect Effects 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 238000010309 melting process Methods 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 238000005275 alloying Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910001094 6061 aluminium alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The invention discloses a 6013-type aluminum alloy microalloyed by zirconium and strontium, which mainly comprises Al, 1.22% to 1.52% of Mg, 0.90% to 1.15% of Si, 0.804% to 1.04% of Cu, 0.451% to 0.661% of Mn, 0.0311% to 0.135% of Zn, 0.0915% to 0.135% of Zr and 0.0157% to 0.0391% of Sr. The preparation method of the alloy comprises the steps of: melting pure Al; sequentially adding Al-Cu intermediate alloy, Al-Si intermediate alloy, Al-Mn intermediate alloy, Al-Zr intermediate alloy, Al-Sr intermediate alloy, pure Zn and pure Mn; melting and adding hexachloroethane for refining; standing andkeeping the temperature for 5 to 10 minutes; removing residues; casting into ingots; and treating the cast ingots. The hardness of the alloy reaches 156.0 to 159.1 HV; the performance of resisting intergranular corrosion is in fourth level; and the performance of resisting exfoliation corrosion is not less than PB level. The alloy can be widely applied to the fields of modern aerospace, weaponry and the like, and has wide application prospect.
Description
Technical field
The present invention relates to a kind of aluminium alloy and preparation method thereof, especially a kind of novel 6000 line aluminium alloys and preparation method thereof, specifically a kind of zirconium and strontium compound microalloyed 6013 type aluminium alloys and preparation method thereof.
Background technology
In recent years, world's commercial aircraft output increases, and military aircraft updates, and the big aircraft project initiation of China, track traffic enter evolution period, and the demand of high-end aluminium alloy heightens.6000 be 6013 or 6056 (composition, performance are similar, different company's research and development) aluminium alloy is the good aluminium alloy of over-all properties, it has medium intensity, good plasticity (founding performance, plastic making, weldability) and erosion resistance, compare with 6061 aluminium alloys, its intensity, intensity exceed more than 15% and have similar erosion resistance and weldability.The fuselage lower wall panels of state-of-the-art large-sized civil aircraft A380 has all adopted the welding integral wallboard of 6013 aluminium alloys in the world today.The good comprehensive performances of 6013 aluminium alloys makes it also have good application prospects in many fields such as field of track traffic, and the lightweight of China's track traffic, high speed press for more advanced intensity height, the aluminium alloy that extrusion performance is good, weldability is good.
As everyone knows, alloying and microalloying are the effective means that improves aluminum alloy organization and performance.From the composition of 6013 aluminium alloys (copper (Cu) 0.6～1.1, manganese (Mn) 0.2～0.8, iron (Fe) 0.5, surplus is aluminium and impurity element for magnesium (Mg) 0.8～1.2, silicon (Si) 0.6～1.0), this alloy does not carry out microalloying as yet.In aluminium alloy, add trace zirconium (Zr), can hinder recrystallize and grain growth, improve intensity, erosion resistance and the weldability of alloy, add micro strontium (Sr) and then have the effects such as thermostability that purify melt, remove impurity, thinning microstructure, obstruction recrystallize and grain growth, raising alloy.
But up to the present, China does not have a kind of 6013 type aluminium alloys with independent intellectual property right available as yet, long-term dependence on import, and this has restricted industrial expansions such as China's aerospace, weaponry to a certain extent.
Summary of the invention
The objective of the invention is on the basis of 6013 alloy main components, change into branch and add trace zirconium element and strontium element, invent a kind of high performance 6013 type aluminium alloys and preparation method thereof by the master alloying of adjusting alloy.
One of technical scheme of the present invention is:
A kind of zirconium and 6013 strontium compound microalloyed aluminium alloys, it is characterized in that: it is mainly by aluminium (Al), magnesium (Mg), silicon (Si), copper (Cu), manganese (Mn), zinc (Zn), iron (Fe), zirconium (Zr) and strontium (Sr) are formed, wherein, the mass percent of magnesium (Mg) is 1.22～1.52%, the mass percent of silicon (Si) is 0.90～1.15%, the mass percent of copper (Cu) is 0.804～1.04%, the mass percent of manganese (Mn) is 0.451～0.661%, the mass percent of zinc (Zn) is 0.0311～0.135%, the mass percent of zirconium (Zr) is 0.0915～0.135%, the mass percent of strontium (Sr) is 0.0157～0.0391%, surplus is aluminium and small amount of impurities element, and the mass percent sum of each component is 100%.
Two of technical scheme of the present invention is:
The preparation method of a kind of zirconium and strontium compound microalloyed 6013 aluminium alloys is characterized in that:
At first, to add Al-Cu master alloy, Al-Si master alloy, Al-Mn master alloy, Al-Zr master alloy, Al-Sr master alloy, pure Zn and pure Mg successively after the pure Al fusing, treat to add the hexachloroethane refining again until there not being gas to overflow after the last pure Mg fusing that adds, leave standstill and remove slag behind insulation 5～10min and be cast into ingot;
Secondly, the alloy that is cast into ingot is carried out aftertreatment, promptly obtain zirconium and 6013 strontium compound microalloyed type aluminium alloys.
The mass percent of Cu is 50.12% in the described Al-Cu master alloy, the mass percent of Si is 10.21% in the Al-Si master alloy, the mass percent of Mn is 10.02% in the Al-Mn master alloy, the mass percent of Sr is 9.89% in the Al-Sr master alloy, and the mass percent of Zr is 4.11% in the Al-Zr master alloy.
Described its optimised process of aftertreatment that is cast into the ingot alloy is the forging and pressing processing, once or once above 560～570 ℃ * 2～4h solution treatment of successive and last double 151 ℃ * 8h+191 ℃ * 8h ageing treatment after 470～490 ℃ * 24h annealing, 500～520 ℃ of preheatings.
The invention has the beneficial effects as follows:
(1) aluminium alloy of the present invention has characteristics such as hardness height, erosion resistance be good.Hardness as aluminium alloy of the present invention is 156.0～159.1HV, be not less than level Four by its intergranular corrosion drag of GB GB/T 7998-2005 (aluminium alloy intergranular corrosion measuring method), be not less than the PB level by its antistripping corrosive nature of GB GB/T 22639-2008 (the corrosion test method of peeling off of aluminium alloy converted products).
(2) the invention discloses the preparation method of a kind of zirconium and strontium compound microalloyed 6013 type aluminium alloys, broken to a certain extent abroad, can satisfy the demand in fields such as China's aerospace, weaponry the blockade on new techniques of high-performance aluminium alloy.
(3) the present invention has obtained the ideal preparation method by a large amount of tests, especially by adopting the method that adds each master alloy and pure metal in order to control each component content, can easily obtain satisfactory aluminum alloy materials by technology of the present invention.
(4) alloy rigidity of the present invention can reach 156.0～159.1HV, measure its anti intercrystalline corrosion performance by GB GB/T 7998-2005 (aluminium alloy intergranular corrosion measuring method) and be in level Four, measure its antistripping corrosive nature by GB GB/T22639-2008 (the corrosion test method of peeling off of aluminium alloy converted products) and be not less than the PB level, can be widely used in fields such as modern aerospace, weaponry, have broad application prospects.
Description of drawings
Fig. 1 is a cross section metallograph after the zirconium of the embodiment of the invention one and the strontium compound microalloyed 6013 type aluminium alloy intergranular corrosion.
Fig. 2 is a cross section metallograph after the intergranular corrosion of commercially available 6061-T6 aluminium alloy.
Fig. 3 is that the zirconium and the 6013 strontium compound microalloyed type aluminium alloys of the embodiment of the invention one peel off corrosion rear surface pattern opticmicroscope figure.
Fig. 4 is that (160 ℃ of 560 ℃ * 2h of solution treatment, ageing treatment * 20h) peel off corrosion rear surface pattern opticmicroscope figure to commercially available 6061-T6 aluminium alloy.
Embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
Embodiment one.
Shown in Fig. 1,2,3,4.
A kind of zirconium and 6013 strontium compound microalloyed aluminium alloys, its preparation method:
Be formulated as example by the 53kg aluminium alloy.
Earlier with the pure Al of 39.89kg A00 grade (composition: 99.79%Al, 0.14%Fe, 0.04%Si, all components of the present invention all adopt mass percent to represent, add 1.04kgAl-Cu master alloy (49.62%Al successively after the fusing down together), 50.12%Cu, 0.15%Fe, 0.11%Si) (rate of loss of Cu is about 6.25%), 5.57kg Al-Si master alloy (89.62%Al, 10.21%Si, 0.17%Fe) (rate of loss of Si is about 5%), 3.26kg Al-Mn master alloy (89.73%Al, 10.02%Mn, 0.19%Fe, 0.06%Si) (rate of loss of Mn is about 10%), 1.70kg Al-Zr master alloy (95.69%Al, 4.11%Zr, 0.20%Fe, 0.10%Si) (rate of loss of Zr is about 8%), 0.59kgAl-Sr master alloy (89.85%Al, 9.89%Sr, 0.16%Fe, 0.10%Si) (rate of loss of Sr is about 75%), 0.05kg pure Zn (rate of loss of Zn is about 8%), 0.90kg pure Mg (rate of loss of Mg is about 20%), described master alloy can directly be purchased from the market, also can adopt ordinary method to prepare voluntarily, add a kind of master alloy in back or metal before melting process is medium behind a kind of master alloy or the melting of metal, treat all to be melted to successively in the aluminum solutions back and add the hexachloroethane refining, leave standstill and remove slag behind insulation 5～10min and be cast into ingot until there not being gas to overflow (add-on is 106g); To founding become the alloy of ingot to carry out the annealing of 470～490 ℃ * 24h, after 500～520 ℃ of preheatings, forge and press processing, 560～570 ℃ * 2～4h solution treatment, 151 ℃ * 8h+191 ℃ * 8h ageing treatment; Promptly obtain zirconium and 6013 strontium compound microalloyed aluminium alloys.
Experimental results show that, through the different solution treatment of aluminium alloy process after the forging and pressing processing, its corrosion-resistant and hardness also can present different features, as behind 151 ℃ of 560 ℃ * 2h of a solution treatment and twice successive ageing treatment * 8h+191 ℃ * 8h, the measured hardness of aluminium alloy is 159.1HV, and (160 ℃ of 560 ℃ * 2h of solution treatment, ageing treatment * 20h) hardness of aluminium alloy is high by 19.9% than 6061-T6; By its intergranular maximum corrosion depth of GB/T7998-2005 (aluminium alloy intergranular corrosion measuring method) is 248.25 μ m (accompanying drawings 1), be in level Four, and the intergranular maximum corrosion depth of 6061-T6 aluminium alloy is 295.58 μ m (accompanying drawings 2); Spot corrosion (accompanying drawing 3) only appears by this aluminum alloy surface of GB/T 22639-2008 (the corrosion test method of peeling off of aluminium alloy converted products), reach PA～PB level, though and spot corrosion (accompanying drawing 4) also only appears in the surface of 6061-T6 aluminium alloy, be in the PB level, and the number of spot corrosion wants many.
And for example through the aluminium alloy of forging and pressing behind 151 ℃ of 560 ℃ of double solution treatment * 2h+570 ℃ * 2h and double ageing treatment * 8h+191 ℃ * 8h, its measured hardness is 156.0HV, and (160 ℃ of one 570 ℃ * 2h+ of 560 ℃ * 2h of solution treatment ageing treatment * 20h) hardness of aluminium alloy is high by 21.9% than 6061-T6; By its intergranular maximum corrosion depth of GB/T 7998-2005 (aluminium alloy intergranular corrosion measuring method) is 296.12 μ m, be in level Four, and 6061-T6 (160 ℃ of 560 ℃ of solution treatment * 2h+570 ℃ * 2h, ageing treatment * 20h) the intergranular maximum corrosion depth of aluminium alloy is 211.96 μ m; The corrosion test method of peeling off by GB/T22639-2008 aluminium alloy converted products) spot corrosion only appears in this aluminum alloy surface, reaches PA～PB level, though spot corrosion also only appears in the surface of 6061-T6 aluminium alloy, is in the PB level, and the number of spot corrosion wants many.
The aluminium alloy of present embodiment through spectrum actual measurement composition is: 1.36Mg, and 1.02Si, 0.918Cu, 0.554Mn, 0.121Zr, 0.0825Zn, 0.0275Sr, surplus is aluminium and small amount of impurities element.
Embodiment two.
A kind of zirconium and 6013 strontium compound microalloyed aluminium alloys, its preparation method:
Be formulated as example by the 53kg aluminium alloy.
Earlier with the pure Al of 40.52kg A00 grade (composition: 99.79%Al, 0.14%Fe, 0.04%Si) add 1.17kgAl-Cu master alloy (49.62%Al successively after the fusing, 50.12%Cu, 0.15%Fe, 0.11%Si) (rate of loss of Cu is about 6.25%), 4.92kg Al-Si master alloy (89.62%Al, 10.21%Si, 0.17%Fe) (rate of loss of Si is about 5%), 3.88kg Al-Mn master alloy (89.73%Al, 10.02%Mn, 0.19%Fe, 0.06%Si) (rate of loss of Mn is about 10%), 1.28kg Al-Zr master alloy (95.69%Al, 4.11%Zr, 0.20%Fe, 0.10%Si) (rate of loss of Zr is about 8%), 0.34kgAl-Sr master alloy (89.85%Al, 9.89%Sr, 0.16%Fe, 0.10%Si) (rate of loss of Sr is about 75%), 0.08kg pure Zn (rate of loss of Zn is about 8%), 0.81kg pure Mg (rate of loss of Mg is about 20%), described master alloy can directly be purchased from the market, also can adopt ordinary method to prepare voluntarily, add a kind of master alloy in back or metal before melting process is medium behind a kind of master alloy or the melting of metal, treat all to be melted to successively in the aluminum solutions back and add the hexachloroethane refining, leave standstill and remove slag behind insulation 5～10min and be cast into ingot until there not being gas to overflow (add-on is 106g); To founding become the alloy of ingot to carry out the annealing of 470～490 ℃ * 24h, after 500～520 ℃ of preheatings, forge and press processing, 560～570 ℃ * 2～4h solution treatment, 151 ℃ * 8h+191 ℃ * 8h ageing treatment; Promptly obtain zirconium and 6013 strontium compound microalloyed aluminium alloys.
The solution treatment of present embodiment can divide two kinds of methods to carry out, and one of them is that its measured hardness is 157.8HV through after carrying out 151 ℃ of twice ageing treatment * 8h+191 ℃ * 8h behind the 560 ℃ * 2h of a solution treatment continuously; By its intergranular maximum corrosion depth of GB/T 7998-2005 (aluminium alloy intergranular corrosion measuring method) is 276.32 μ m; Spot corrosion only occurs by this aluminum alloy surface of GB/T 22639-2008 (the corrosion test method of peeling off of aluminium alloy converted products), reach PA～PB level.
Another is through carrying out 151 ℃ of twice ageing treatment of successive * 8h+191 ℃ * 8h behind 560 ℃ of twice solution treatment of the successive * 2h+570 ℃ * 2h, its measured hardness is 156.3HV, by its intergranular maximum corrosion depth of GB/T7998-2005 (aluminium alloy intergranular corrosion measuring method) is 287.36.32 μ m, spot corrosion only occurs by this aluminum alloy surface of GB/T 22639-2008 (the corrosion test method of peeling off of aluminium alloy converted products), reach PA～PB level.
The aluminium alloy of present embodiment through spectrum actual measurement composition is: 1.22Mg, and 0.90Si, 1.04Cu, 0.661Mn, 0.0915Zr, 0.135Zn, 0.0157Sr, surplus is aluminium and small amount of impurities element.
Embodiment three.
A kind of zirconium and 6013 strontium compound microalloyed aluminium alloys, its preparation method:
Be formulated as example by the 53kg aluminium alloy.
Earlier with the pure Al of 40.01kg A00 grade (composition: 99.79%Al, 0.14%Fe, 0.04%Si) add 0.91kgAl-Cu master alloy (49.62%Al successively after the fusing, 50.12%Cu, 0.15%Fe, 0.11%Si) (rate of loss of Cu is about 6.25%), 6.28kg Al-Si master alloy (89.62%Al, 10.21%Si, 0.17%Fe) (rate of loss of Si is about 5%), 2.65kg Al-Mn master alloy (89.73%Al, 10.02%Mn, 0.19%Fe, 0.06%Si) (rate of loss of Mn is about 10%), 1.28kg Al-Zr master alloy (95.69%Al, 4.11%Zr, 0.20%Fe, 0.10%Si) (rate of loss of Zr is about 8%), 0.84kgAl-Sr master alloy (89.85%Al, 9.89%Sr, 0.16%Fe, 0.10%Si) (rate of loss of Sr is about 75%), 0.02kg pure Zn (rate of loss of Zn is about 8%), 1.01kg pure Mg (rate of loss of Mg is about 20%), described master alloy can directly be purchased from the market, also can adopt ordinary method to prepare voluntarily, add a kind of master alloy in back or metal before melting process is medium behind a kind of master alloy or the melting of metal, treat all to be melted to successively in the aluminum solutions back and add the hexachloroethane refining, leave standstill and remove slag behind insulation 5～10min and be cast into ingot until there not being gas to overflow (add-on is 106g); To founding become the alloy of ingot to carry out the annealing of 470～490 ℃ * 24h, after 500～520 ℃ of preheatings, forge and press processing, 560～570 ℃ * 2～4h solution treatment, 151 ℃ * 8h+191 ℃ * 8h ageing treatment; Promptly obtain zirconium and 6013 strontium compound microalloyed aluminium alloys.
Aforesaid solution treatment can divide multiple situation during concrete enforcement, and the aluminium alloy after wherein will forging and pressing is after carrying out 151 ℃ of double ageing treatment * 8h+191 ℃ * 8h behind the 560 ℃ * 2h of a solution treatment, and its measured hardness is 158.5HV; By its intergranular maximum corrosion depth of GB/T 7998-2005 (aluminium alloy intergranular corrosion measuring method) is 292.87 μ m; Spot corrosion only occurs by this aluminum alloy surface of GB/T 22639-2008 (the corrosion test method of peeling off of aluminium alloy converted products), reach PA～PB level.
Also can be after carrying out 151 ℃ of double ageing treatment * 8h+191 ℃ * 8h again behind 560 ℃ of the double solution treatment * 2h+570 ℃ * 2h with the aluminium alloy after the forging and pressing, its measured hardness is 156.9HV, by its intergranular maximum corrosion depth of GB/T 7998-2005 (aluminium alloy intergranular corrosion measuring method) is 252.34 μ m, the corrosion test method of peeling off by GB/T 22639-2008 aluminium alloy converted products) spot corrosion only appears in this aluminum alloy surface, reaches PA～PB level.
The aluminium alloy of present embodiment through spectrum actual measurement composition is: 1.52Mg, and 1.15Si, 0.804Cu, 0.451Mn, 0.0915Zr, 0.0311Zn, 0.0391Sr, surplus is aluminium and small amount of impurities element.
Below only listed the proportioning and the manufacture method of the aluminium alloy of several common proportionings, those skilled in the art can suitably adjust the proportioning of each component and strict can obtain ideal zirconium and 6013 strontium compound microalloyed type aluminium alloys by above-mentioned steps manufacturing according to above-mentioned example.
The part that the present invention does not relate to prior art that maybe can adopt all same as the prior art is realized.
Claims (2)
1. a zirconium and 6013 strontium compound microalloyed type aluminium alloys, it is characterized in that: it is mainly by aluminium (Al), magnesium (Mg), silicon (Si), copper (Cu), manganese (Mn), zinc (Zn), zirconium (Zr) and strontium (Sr) are formed, wherein, the mass percent of magnesium (Mg) is 1.22～1.52%, the mass percent of silicon (Si) is 0.90～1.15%, the mass percent of copper (Cu) is 0.804～1.04%, the mass percent of manganese (Mn) is 0.451～0.661%, the mass percent of zinc (Zn) is 0.0311～0.135%, the mass percent of zirconium (Zr) is 0.0915～0.135%, the mass percent of strontium (Sr) is 0.0157～0.0391%, surplus is aluminium and small amount of impurities element, and the mass percent sum of each component is 100%; And adopt following method to prepare:
At first, to add Al-Cu master alloy, Al-Si master alloy, Al-Mn master alloy, Al-Zr master alloy, Al-Sr master alloy, pure Zn and pure Mg successively after the pure Al fusing, the pure Mg fusing back for the treatment of last adding adds the hexachloroethane refining until there not being gas to overflow, and leaves standstill to remove slag behind insulation 5～10min and be cast into ingot;
Secondly, the alloy that is cast into ingot is carried out the aftertreatment of forging and pressing processing, successive after 470～490 ℃ * 24h annealing, 500～520 ℃ of preheatings once above (560～570) ℃ * (2～4) h solution treatment and double 151 ℃ * 8h+191 ℃ * 8h ageing treatment; Can obtain zirconium and 6013 strontium compound microalloyed type aluminium alloys.
2. aluminium alloy according to claim 1, the mass percent that it is characterized in that Cu in the described Al-Cu master alloy is 50.12%, the mass percent of Si is 10.21% in the Al-Si master alloy, the mass percent of Mn is 10.02% in the Al-Mn master alloy, the mass percent of Sr is 9.89% in the Al-Sr master alloy, and the mass percent of Zr is 4.11% in the Al-Zr master alloy.
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| CN105385971B (en) * | 2015-12-17 | 2017-09-22 | 上海友升铝业有限公司 | A kind of aging technique after Al Mg Si systems alloy bending deformation |
| CN105441748B (en) * | 2015-12-25 | 2017-10-31 | 黄山市强峰铝业有限公司 | Aluminium alloy of modified 3004 and preparation method thereof, its thermal insulation door panel being made and technique |
| CN105603274B (en) * | 2016-02-17 | 2017-09-08 | 苏州浦石精工科技有限公司 | A kind of high-strength high-ductility corrosion cast aluminium alloy gold and preparation method thereof |
| CN107400809A (en) * | 2017-07-31 | 2017-11-28 | 江苏大学 | The zirconium strontium compound microalloyed Al-Si-Cu-based cast aluminium alloy gold of high tough corrosion-resistant low silicon content and preparation method |
| CN107385288A (en) * | 2017-07-31 | 2017-11-24 | 江苏大学 | A kind of zirconium is strontium compound microalloyed and the high tough aluminium copper silicon cast aluminium alloy gold and preparation method of kirsite |
| CN107385287A (en) * | 2017-07-31 | 2017-11-24 | 江苏大学 | Zirconium is strontium compound microalloyed and the high tough Al-Si-Cu-based cast aluminium alloy gold and preparation method of MnZn alloying |
| CN107385289A (en) * | 2017-07-31 | 2017-11-24 | 江苏大学 | The high tough corrosion-resistant hypoeutectic Al Si systems cast aluminium alloy gold and preparation method of a kind of Zr and Sr combined microalloyings |
| CN107502841B (en) * | 2017-08-18 | 2020-05-26 | 江苏大学 | Method for improving corrosion resistance of zirconium and strontium composite microalloyed aluminum alloy |
| CN107686914A (en) * | 2017-08-18 | 2018-02-13 | 江苏大学 | A kind of zirconium and the high line aluminium alloy of silicon 6000 of strontium compound microalloyed high magnesium and preparation method thereof |
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| US20030143102A1 (en) * | 2001-07-25 | 2003-07-31 | Showa Denko K.K. | Aluminum alloy excellent in cutting ability, aluminum alloy materials and manufacturing method thereof |
| DE102004022817A1 (en) * | 2004-05-08 | 2005-12-01 | Erbslöh Ag | Decorative anodizable, easily deformable, mechanically highly loadable aluminum alloy, process for its production and aluminum product made from this alloy |
| CN101509091A (en) * | 2009-03-27 | 2009-08-19 | 中南大学 | High-strength high-ductility Al-Zn-Mg-Cu-Sr alloy and production method |
| CN101649405B (en) * | 2009-09-17 | 2011-04-27 | 中南大学 | Al-Mg-Mn-Zr-Sr alloy and preparation method thereof |
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