CN105400975A - High-strength corrosion-resistant aluminum alloy and preparation method thereof - Google Patents
High-strength corrosion-resistant aluminum alloy and preparation method thereof Download PDFInfo
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Abstract
The invention discloses high-strength corrosion-resistant aluminum alloy. The high-strength corrosion-resistant aluminum alloy is prepared from, by weight, 4%-8% of Zn, 3%-5% of Mg, 2%-4% of Si, 1%-3% of Fe, 0.5%-1.5% of Re, 1%-1.5% of Ti, 1.5%-2.5% of B, 5%-8% of Cu, 0.2%-0.8% of In, 0.1%-0.5% of Cr, 0.1%-0.2% of Ce, 0.3%-0.6% of Ni, 0.1%-0.3% of Mn and the balance aluminum and inevitable impurities. The invention further provides a preparation method of the high-strength corrosion-resistant aluminum alloy. According to the high-strength corrosion-resistant aluminum alloy and the preparation method thereof, by reasonably controlling the proportion of the elements in liquid alloy, the proportion of the aluminum and zinc in the alloy is guaranteed; the high-strength corrosion-resistant aluminum alloy is prepared through the proper method, and thus the obtained aluminum alloy is high in strength and good in corrosion resistance.
Description
Technical field
The present invention relates to a kind of preparation method of aluminium alloy, particularly relate to a kind of high-strength corrosion-proof aluminium alloy and preparation method thereof.
Background technology
At present, since the mankind start metal smelting and use metal products, corrosion of metal and protection question are also just together.Corrosion of metal is huge to the loss that society causes.According to statistics, the metal that people smelt out every year about has 1/10 to be damaged by corrosion, and being equivalent to about has the smeltery of 1/10 to do idle work because of the existence of corrosion every year; And the destruction of the metal products that the metal that 1/10 is damaged by corrosion brings disaster to, its loss will be far longer than the value of metal itself; And the loss of the shut-down caused thus, stopping production and personal injury is difficult to the appraisal especially.So metallic corrosion and protection question cause the great attention of people.Aluminium zinc is a kind of novel anticorrosion material, is mainly used in the coating of metallic surface, compares with fine aluminium coating with pure zinc, it has adhesivity after being coated with strong, wear resistance and erosion resistance better, the features such as workability is superior, thus obtain and apply comparatively widely, and become the focus of people's research.
Summary of the invention
For solving the technical problem existed in background technology, the present invention proposes a kind of high-strength corrosion-proof aluminium alloy and preparation method thereof.
A kind of high-strength corrosion-proof aluminium alloy that the present invention proposes, its element comprises by weight percentage: Zn4-8%, Mg3-5%, Si2-4%, Fe1-3%, Re0.5-1.5%, Ti1-1.5%, B1.5-2.5%, Cu5-8%, In0.2-0.8%, Cr0.1-0.5%, Ce0.1-0.2%, Ni0.3-0.6%, Mn0.1-0.3%; Surplus is aluminium and inevitable impurity.
Preferably, its element comprises by weight percentage: Zn5-7%, Mg3.5-4.5%, Si2.5-3.5%, Fe1.5-2.5%, Re0.8-1.2%, Ti1.1-1.4%, B1.8-2.2%, Cu6-7%, In0.3-0.7%, Cr0.2-0.4%, Ce0.12-0.18%, Ni0.4-0.5%, Mn0.15-0.25%; Surplus is aluminium and inevitable impurity.
Preferably, its element comprises by weight percentage: Zn6%, Mg4%, Si3%, Fe2%, Re1.0%, Ti1.25%, B2.0%, Cu6.5%, In0.5%, Cr0.3%, Ce0.15%, Ni0.45%, Mn0.2%; Surplus is aluminium and inevitable impurity.
The preparation method of a kind of high-strength corrosion-proof aluminium alloy that the present invention proposes, comprises the steps:
S1: melting: aluminium ingot, aluminum-zinc alloy, aluminium-magnesium alloy, aluminum-silicon alloy, aluminum-iron alloy, rhenium ingot, titanium ingot, aluminium-boron alloy, Al-zn-mg-cu alloy, magnesium ingot, indium ingot, chromium ingot, cerium ingot, nickel ingot, manganese ingot are formed aluminium alloy 750-780 DEG C of fusing, refinery by de-gassing is carried out at 780-820 DEG C, carry out being incubated standing 10-30min at 740-780 DEG C, casting obtains ingot casting;
S2: rolling: cooling after carrying out hot rolling after the ingot casting water-cooled obtained in S1 is obtained material a;
S3: timeliness: material a is carried out artificial aging, obtains high-strength corrosion-proof aluminium alloy, and wherein, aging temp is 160-180 DEG C, and aging time is 1-4h.
Preferably, in S1, aluminium ingot is added in smelting furnace, at 750-780 DEG C, after aluminium ingot is molten into liquid state, add aluminum-zinc alloy, aluminium-magnesium alloy, aluminum-silicon alloy, aluminum-iron alloy, rhenium ingot, titanium ingot, aluminium-boron alloy, Al-zn-mg-cu alloy, indium ingot, chromium ingot, cerium ingot, nickel ingot, manganese ingot, after fusing, add magnesium ingot, form aluminium alloy.
Preferably, in S1, in refinery by de-gassing process, refining agent add-on is the furnace charge amount 0.5-0.8% of furnace charge amount, and after refining, aluminium alloy hydrogen richness is 0.35-0.55ml/100g.
Preferably, in S2, in course of hot rolling, it is 460-480 DEG C that ingot casting enters to roll temperature, and finishing temperature is 360-420 DEG C, and after hot rolling water-cooled, shaft-like aluminium alloy temperature is 60-90 DEG C.
High-strength corrosion-proof aluminium alloy of the present invention, regulated and controled by alloy fluid component, after regulation and control, aluminium alloy compositions in weight percentage comprises: Zn4-8%, Mg3-5%, Si2-4%, Fe1-3%, Re0.5-1.5%, Ti1-1.5%, B1.5-2.5%, Cu5-8%, In0.2-0.8%, Cr0.1-0.5%, Ce0.1-0.2%, Ni0.3-0.6%, Mn0.1-0.3%; Surplus is aluminium and inevitable impurity.
And Al is alloying element maximum in aluminium zinc.In the eutectic melt of low melting point, Al has very strong retardation to base steel generation Fe-Zn alloy layer reaction in the melt.Al is enriched on the interface of base steel and coating, and this can not only block the reaction of Fe-Zn alloy layer, and can also prevent interface from cracking.Rich aluminium is on good terms and is promoted the nucleation capability of rich zinc phase, and in eutectic phase, rich aluminium can make processing forming better than other coating with the staggered lamellar structure of rich zinc.The retardation of aluminium is owing to generating Fe at steel substrate surface
2al
5protective layer.Al can also make coating gloss significantly improve, because the avidity of Al and O is larger than Zn and O, so generate one deck Al at coating surface
2o
3protective membrane, prevent the oxidation of coating surface, Al can also improve the mobility of zinc liquid, reduce coating thick.Add the corrosion resistance that magnesium can increase zn-al alloy coating in zinc, suppress the grain boundary corrosion of aluminium zinc, eliminate the detrimentally affect of impurity element S n and Cd in aluminium zinc.The coating erosion resistance in the seawater of adding magnesium in low aluminum zn-based alloys improves a lot.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail; should understand; embodiment is only for illustration of the present invention, instead of for limiting the present invention, any amendment, equivalent replacement etc. made on basis of the present invention is all in protection scope of the present invention.
Embodiment 1
The preparation method of a kind of high-strength corrosion-proof aluminium alloy that the present invention proposes, comprises the steps:
S1: melting: aluminium ingot is added in smelting furnace, at 765 DEG C, after aluminium ingot is molten into liquid state, add aluminum-zinc alloy, aluminium-magnesium alloy, aluminum-silicon alloy, aluminum-iron alloy, rhenium ingot, titanium ingot, aluminium-boron alloy, Al-zn-mg-cu alloy, indium ingot, chromium ingot, cerium ingot, nickel ingot, manganese ingot, magnesium ingot is added after fusing, form aluminium alloy, then alloy fluid component regulation and control, after regulation and control, the component of aluminium alloy is: Zn6%, Mg4%, Si3%, Fe2%, Re1.0%, Ti1.25%, B2.0%, Cu6.5%, In0.5%, Cr0.3%, Ce0.15%, Ni0.45%, Mn0.2%, surplus is aluminium and inevitable impurity, then carry out refinery by de-gassing at 800 DEG C, in refinery by de-gassing process, refining agent add-on is the furnace charge amount 0.65% of furnace charge amount, and after refining, aluminium alloy hydrogen richness is 0.45ml/100g, carries out being incubated standing 20min at 760 DEG C, and casting obtains ingot casting,
S2: rolling: cooling after carrying out hot rolling after the ingot casting water-cooled obtained in S1 is obtained material a, and wherein, in course of hot rolling, it is 470 DEG C that ingot casting enters to roll temperature, and finishing temperature is 390 DEG C, and after hot rolling water-cooled, shaft-like aluminium alloy temperature is 75 DEG C;
S3: timeliness: material a is carried out artificial aging, obtains high-strength corrosion-proof aluminium alloy, and wherein, aging temp is 170 DEG C, and aging time is 2.5h.
Embodiment 2
The preparation method of a kind of high-strength corrosion-proof aluminium alloy that the present invention proposes, comprises the steps:
S1: melting: aluminium ingot is added in smelting furnace, at 750 DEG C, after aluminium ingot is molten into liquid state, add aluminum-zinc alloy, aluminium-magnesium alloy, aluminum-silicon alloy, aluminum-iron alloy, rhenium ingot, titanium ingot, aluminium-boron alloy, Al-zn-mg-cu alloy, indium ingot, chromium ingot, cerium ingot, nickel ingot, manganese ingot, magnesium ingot is added after fusing, form aluminium alloy, then alloy fluid component regulation and control, after regulation and control, the component of aluminium alloy is: Zn4%, Mg5%, Si2%, Fe3%, Re0.5%, Ti1.5%, B1.5%, Cu8%, In0.2%, Cr0.5%, Ce0.1%, Ni0.6%, Mn0.1%; Surplus is aluminium and inevitable impurity; Then carry out refinery by de-gassing at 820 DEG C, in refinery by de-gassing process, refining agent add-on is the furnace charge amount 0.5% of furnace charge amount, and after refining, aluminium alloy hydrogen richness is 0.55ml/100g, carries out being incubated standing 30min at 740 DEG C, and casting obtains ingot casting;
S2: rolling: cooling after carrying out hot rolling after the ingot casting water-cooled obtained in S1 is obtained material a, and wherein, in course of hot rolling, it is 460 DEG C that ingot casting enters to roll temperature, and finishing temperature is 420 DEG C, and after hot rolling water-cooled, shaft-like aluminium alloy temperature is 60 DEG C;
S3: timeliness: material a is carried out artificial aging, obtains high-strength corrosion-proof aluminium alloy, and wherein, aging temp is 180 DEG C, and aging time is 1h.
Embodiment 3
The preparation method of a kind of high-strength corrosion-proof aluminium alloy that the present invention proposes, comprises the steps:
S1: melting: aluminium ingot is added in smelting furnace, at 780 DEG C, after aluminium ingot is molten into liquid state, add aluminum-zinc alloy, aluminium-magnesium alloy, aluminum-silicon alloy, aluminum-iron alloy, rhenium ingot, titanium ingot, aluminium-boron alloy, Al-zn-mg-cu alloy, indium ingot, chromium ingot, cerium ingot, nickel ingot, manganese ingot, magnesium ingot is added after fusing, form aluminium alloy, then alloy fluid component regulation and control, after regulation and control, the component of aluminium alloy is: Zn8%, Mg3%, Si4%, Fe1%, Re1.5%, Ti1%, B2.5%, Cu5%, In0.8%, Cr0.1%, Ce0.2%, Ni0.6%, Mn0.1%; Surplus is aluminium and inevitable impurity; Then carry out refinery by de-gassing at 820 DEG C, in refinery by de-gassing process, refining agent add-on is the furnace charge amount 0.5% of furnace charge amount, and after refining, aluminium alloy hydrogen richness is 0.55ml/100g, carries out being incubated standing 30min at 740 DEG C, and casting obtains ingot casting;
S2: rolling: cooling after carrying out hot rolling after the ingot casting water-cooled obtained in S1 is obtained material a, and wherein, in course of hot rolling, it is 460 DEG C that ingot casting enters to roll temperature, and finishing temperature is 420 DEG C, and after hot rolling water-cooled, shaft-like aluminium alloy temperature is 60 DEG C;
S3: timeliness: material a is carried out artificial aging, obtains high-strength corrosion-proof aluminium alloy, and wherein, aging temp is 180 DEG C, and aging time is 1h.
Embodiment 4
The preparation method of a kind of high-strength corrosion-proof aluminium alloy that the present invention proposes, comprises the steps:
S1: melting: aluminium ingot is added in smelting furnace, at 760 DEG C, after aluminium ingot is molten into liquid state, add aluminum-zinc alloy, aluminium-magnesium alloy, aluminum-silicon alloy, aluminum-iron alloy, rhenium ingot, titanium ingot, aluminium-boron alloy, Al-zn-mg-cu alloy, indium ingot, chromium ingot, cerium ingot, nickel ingot, manganese ingot, magnesium ingot is added after fusing, form aluminium alloy, then alloy fluid component regulation and control, after regulation and control, the component of aluminium alloy is: Zn5%, Mg4.5%, Si2.5%, Fe2.5%, Re0.8%, Ti1.4%, B1.8%, Cu7%, In0.3%, Cr0.4%, Ce0.12%, Ni0.5%, Mn0.15%, surplus is aluminium and inevitable impurity, then carry out refinery by de-gassing at 810 DEG C, in refinery by de-gassing process, refining agent add-on is the furnace charge amount 0.6% of furnace charge amount, and after refining, aluminium alloy hydrogen richness is 0.50ml/100g, carries out being incubated standing 25min at 745 DEG C, and casting obtains ingot casting,
S2: rolling: cooling after carrying out hot rolling after the ingot casting water-cooled obtained in S1 is obtained material a, and wherein, in course of hot rolling, it is 465 DEG C that ingot casting enters to roll temperature, and finishing temperature is 415 DEG C, and after hot rolling water-cooled, shaft-like aluminium alloy temperature is 65 DEG C;
S3: timeliness: material a is carried out artificial aging, obtains high-strength corrosion-proof aluminium alloy, and wherein, aging temp is 175 DEG C, and aging time is 2h.
Embodiment 5
The preparation method of a kind of high-strength corrosion-proof aluminium alloy that the present invention proposes, comprises the steps:
S1: melting: aluminium ingot is added in smelting furnace, at 770 DEG C, after aluminium ingot is molten into liquid state, add aluminum-zinc alloy, aluminium-magnesium alloy, aluminum-silicon alloy, aluminum-iron alloy, rhenium ingot, titanium ingot, aluminium-boron alloy, Al-zn-mg-cu alloy, indium ingot, chromium ingot, cerium ingot, nickel ingot, manganese ingot, magnesium ingot is added after fusing, form aluminium alloy, then alloy fluid component regulation and control, after regulation and control, the component of aluminium alloy is: Zn7%, Mg3.5%, Si3.5%, Fe1.5%, Re1.2%, Ti1.1%, B2.2%, Cu6%, In0.7%, Cr0.2%, Ce0.18%, Ni0.4%, Mn0.25%, surplus is aluminium and inevitable impurity, then carry out refinery by de-gassing at 790 DEG C, in refinery by de-gassing process, refining agent add-on is the furnace charge amount 0.7% of furnace charge amount, and after refining, aluminium alloy hydrogen richness is 0.40ml/100g, carries out being incubated standing 15min at 775 DEG C, and casting obtains ingot casting,
S2: rolling: cooling after carrying out hot rolling after the ingot casting water-cooled obtained in S1 is obtained material a, and wherein, in course of hot rolling, it is 475 DEG C that ingot casting enters to roll temperature, and finishing temperature is 365 DEG C, and after hot rolling water-cooled, shaft-like aluminium alloy temperature is 85 DEG C;
S3: timeliness: material a is carried out artificial aging, obtains high-strength corrosion-proof aluminium alloy, and wherein, aging temp is 165 DEG C, and aging time is 3h.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (7)
1. a high-strength corrosion-proof aluminium alloy, it is characterized in that, its element comprises by weight percentage: Zn4-8%, Mg3-5%, Si2-4%, Fe1-3%, Re0.5-1.5%, Ti1-1.5%, B1.5-2.5%, Cu5-8%, In0.2-0.8%, Cr0.1-0.5%, Ce0.1-0.2%, Ni0.3-0.6%, Mn0.1-0.3%; Surplus is aluminium and inevitable impurity.
2. high-strength corrosion-proof aluminium alloy according to claim 1, it is characterized in that, its element comprises by weight percentage: Zn5-7%, Mg3.5-4.5%, Si2.5-3.5%, Fe1.5-2.5%, Re0.8-1.2%, Ti1.1-1.4%, B1.8-2.2%, Cu6-7%, In0.3-0.7%, Cr0.2-0.4%, Ce0.12-0.18%, Ni0.4-0.5%, Mn0.15-0.25%; Surplus is aluminium and inevitable impurity.
3. high-strength corrosion-proof aluminium alloy according to claim 1 and 2, it is characterized in that, its element comprises by weight percentage: Zn6%, Mg4%, Si3%, Fe2%, Re1.0%, Ti1.25%, B2.0%, Cu6.5%, In0.5%, Cr0.3%, Ce0.15%, Ni0.45%, Mn0.2%; Surplus is aluminium and inevitable impurity.
4. a preparation method for the high-strength corrosion-proof aluminium alloy according to any one of claim 1-3, is characterized in that, comprise the steps:
S1: melting: aluminium ingot, aluminum-zinc alloy, aluminium-magnesium alloy, aluminum-silicon alloy, aluminum-iron alloy, rhenium ingot, titanium ingot, aluminium-boron alloy, Al-zn-mg-cu alloy, magnesium ingot, indium ingot, chromium ingot, cerium ingot, nickel ingot, manganese ingot are formed aluminium alloy 750-780 DEG C of fusing, refinery by de-gassing is carried out at 780-820 DEG C, carry out being incubated standing 10-30min at 740-780 DEG C, casting obtains ingot casting;
S2: rolling: cooling after carrying out hot rolling after the ingot casting water-cooled obtained in S1 is obtained material a;
S3: timeliness: material a is carried out artificial aging, obtains high-strength corrosion-proof aluminium alloy, and wherein, aging temp is 160-180 DEG C, and aging time is 1-4h.
5. the high-strength corrosion-proof aluminium alloy according to any one of claim 1-4, it is characterized in that, in S1, aluminium ingot is added in smelting furnace, at 750-780 DEG C, after aluminium ingot is molten into liquid state, add aluminum-zinc alloy, aluminium-magnesium alloy, aluminum-silicon alloy, aluminum-iron alloy, rhenium ingot, titanium ingot, aluminium-boron alloy, Al-zn-mg-cu alloy, indium ingot, chromium ingot, cerium ingot, nickel ingot, manganese ingot, add magnesium ingot after fusing, form aluminium alloy.
6. the high-strength corrosion-proof aluminium alloy according to any one of claim 1-5, is characterized in that, in S1, in refinery by de-gassing process, refining agent add-on is the furnace charge amount 0.5-0.8% of furnace charge amount, and after refining, aluminium alloy hydrogen richness is 0.35-0.55ml/100g.
7. the high-strength corrosion-proof aluminium alloy according to any one of claim 1-6, is characterized in that, in S2, in course of hot rolling, it is 460-480 DEG C that ingot casting enters to roll temperature, and finishing temperature is 360-420 DEG C, and after hot rolling water-cooled, shaft-like aluminium alloy temperature is 60-90 DEG C.
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| CN106839470A (en) * | 2016-12-14 | 2017-06-13 | 池州市小康人家科技有限公司 | A kind of solar water heater anticorrosion alloy |
| CN107138871A (en) * | 2017-05-15 | 2017-09-08 | 天长市通联焊业有限公司 | A kind of magnesium aluminum composite board flux-cored wire used for welding and preparation method thereof |
| CN108441726A (en) * | 2018-05-11 | 2018-08-24 | 合肥大麦灯箱器材有限公司 | A kind of high-strength aluminum alloy and its advertising lamp box of preparation |
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Effective date of registration: 20161219 Address after: 230601, Hefei economic and Technological Development Zone, Anhui, stone road, No. 339, No. 22, Venus commercial building, floor two, 2006 Applicant after: Hefei Yi Yuanxin Material Co., Ltd. Address before: Hefei City, Anhui province water 230000 Yangjiang Road, building 6 seasons flowers Lang Yunyuan block C Room 601 Applicant before: HEFEI BIAOBING KAIJI NEW MATERIALS CO., LTD. |
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