CN103725931A - Aluminum-Ferrum-Vanadium aluminum alloy and preparation method thereof and aluminum alloy cable - Google Patents
Aluminum-Ferrum-Vanadium aluminum alloy and preparation method thereof and aluminum alloy cable Download PDFInfo
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- 238000002360 preparation method Methods 0.000 title claims abstract description 22
- 229910052720 vanadium Inorganic materials 0.000 title claims abstract description 16
- 230000032683 aging Effects 0.000 claims abstract description 28
- 238000005266 casting Methods 0.000 claims abstract description 23
- 238000009413 insulation Methods 0.000 claims description 43
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 40
- 229910052782 aluminium Inorganic materials 0.000 claims description 40
- 239000004411 aluminium Substances 0.000 claims description 39
- 238000012545 processing Methods 0.000 claims description 24
- 229910052748 manganese Inorganic materials 0.000 claims description 12
- 239000010936 titanium Substances 0.000 claims description 12
- 229910052719 titanium Inorganic materials 0.000 claims description 12
- 229910052804 chromium Inorganic materials 0.000 claims description 11
- 229910052759 nickel Inorganic materials 0.000 claims description 11
- 239000010410 layer Substances 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 238000005452 bending Methods 0.000 claims description 6
- 239000011241 protective layer Substances 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 abstract description 2
- 239000006104 solid solution Substances 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 71
- 229910052742 iron Inorganic materials 0.000 description 29
- 238000000034 method Methods 0.000 description 25
- 229910052761 rare earth metal Inorganic materials 0.000 description 25
- 238000003723 Smelting Methods 0.000 description 24
- 238000007670 refining Methods 0.000 description 24
- 239000000956 alloy Substances 0.000 description 18
- 229910045601 alloy Inorganic materials 0.000 description 17
- 230000008569 process Effects 0.000 description 17
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- 230000002929 anti-fatigue Effects 0.000 description 11
- 239000011572 manganese Substances 0.000 description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 10
- QRRWWGNBSQSBAM-UHFFFAOYSA-N alumane;chromium Chemical compound [AlH3].[Cr] QRRWWGNBSQSBAM-UHFFFAOYSA-N 0.000 description 9
- PTXMVOUNAHFTFC-UHFFFAOYSA-N alumane;vanadium Chemical compound [AlH3].[V] PTXMVOUNAHFTFC-UHFFFAOYSA-N 0.000 description 9
- -1 aluminium-manganese Chemical compound 0.000 description 9
- 239000011651 chromium Substances 0.000 description 9
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 description 7
- 238000011056 performance test Methods 0.000 description 7
- 229910000846 In alloy Inorganic materials 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 6
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- 229910052684 Cerium Inorganic materials 0.000 description 1
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- 229910052693 Europium Inorganic materials 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910052688 Gadolinium Inorganic materials 0.000 description 1
- 229910052689 Holmium Inorganic materials 0.000 description 1
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- QQHSIRTYSFLSRM-UHFFFAOYSA-N alumanylidynechromium Chemical compound [Al].[Cr] QQHSIRTYSFLSRM-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
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- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 description 1
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- OGPBJKLSAFTDLK-UHFFFAOYSA-N europium atom Chemical compound [Eu] OGPBJKLSAFTDLK-UHFFFAOYSA-N 0.000 description 1
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- 229910052746 lanthanum Inorganic materials 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- OHSVLFRHMCKCQY-UHFFFAOYSA-N lutetium atom Chemical compound [Lu] OHSVLFRHMCKCQY-UHFFFAOYSA-N 0.000 description 1
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- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 1
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- 229910052706 scandium Inorganic materials 0.000 description 1
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- GZCRRIHWUXGPOV-UHFFFAOYSA-N terbium atom Chemical compound [Tb] GZCRRIHWUXGPOV-UHFFFAOYSA-N 0.000 description 1
- FRNOGLGSGLTDKL-UHFFFAOYSA-N thulium atom Chemical compound [Tm] FRNOGLGSGLTDKL-UHFFFAOYSA-N 0.000 description 1
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention provides an Aluminum-Ferrum-Vanadium aluminum alloy and a preparation method of the Aluminum-Ferrum-Vanadium aluminum alloy. The preparation method comprises the steps of firstly, casting an aluminum alloy ingot; and secondly, carrying out solid solution treatment and aging treatment sequentially on the aluminum alloy ingot, and rolling to obtain the Aluminum-Ferrum-Vanadium aluminum alloy. The invention also provides an aluminum alloy cable. The aluminum alloy has good overall performances by selection and control of added elements and reasonable preparation process.
Description
Technical field
The present invention relates to alloy technology field, relate in particular to a kind of Al-Fe-V aluminium alloy, its preparation method and aluminium alloy cable.
Background technology
Aluminium alloy is a most widely used class non-ferrous metal structured material in industry, and it is used widely in Aeronautics and Astronautics, automobile, machinofacture, boats and ships and chemical industry.Along with the develop rapidly of science and technology and industrial economy, the demand of aluminium alloy is increasing, and therefore the research of aluminium alloy also thereupon deeply.The widespread use of aluminium alloy has promoted the development of aluminium alloy in power industry, and the Application Areas of aluminium alloy has been widened again in the development of power industry simultaneously.
The base components power cable of power industry is the resource for carrying and distribute electric energy, and its basic structure is comprised of core, insulation layer, screen layer and protective layer four parts.Wherein, core is the current-carrying part of power cable, is used for transmission of electric energy, and it is the major portion of power cable; Insulation layer will be isolated from each other at electric equipment compartment between core and the earth and out of phase core, guarantees power delivery, and it is indispensable integral part in power cable structure; Protective layer is that protection power cable is avoided the intrusion of introduced contaminants and moisture, and prevents that external force from directly damaging power cable.Because copper has good electroconductibility, copper is widely used in the core of power cable.But along with the scarcity day by day of copper resource, and the content of aluminium is very abundant, has received investigator's concern with aluminium substitution copper, and therefore aluminium alloy becomes the focus of research as cable conductor.
Aluminium alloy cable substitutes copper cable becomes a kind of trend gradually, and is widely applied.Aluminum-alloy conductor material of the prior art, comparatively excellent at aspects such as electrical property, corrosion resistance nature and mechanical propertys, but aspect antifatigue and high temperature creep property or poor, thereby easily there are quality problems, affect the work-ing life of aluminum alloy materials or bring potential safety hazard, therefore, aluminium alloy cable over-all properties is still poor.
Defect for aluminium alloy for power cable, investigator starts to be devoted to improve aluminium alloy in the research for power cable.For example: publication number is the disclosed aluminium alloy of the Chinese patent of CN101525709A, CN101914708, CN102222546A, although the ductility of aluminium alloy is improved, but anti-fatigue performance does not improve, although and also mentioned creep-resistant property and be improved, the specific targets of improving are not clear and definite; The disclosed aluminium alloy of Chinese patent that and for example publication number is CN102360624, although creep-resistant property has obtained remarkable improvement, but well do not embody the effect of improvement at ductility and anti-fatigue performance, thereby the still Shortcomings of over-all properties of aluminium alloy still; For another example the disclosed aluminium alloy of Japanese documentation that publication number is CN102119233A, is being improved, and is having good proof stress and impact resistance, but anti-fatigue performance and creep-resistant property is not improved aspect intensity and ductility.
Summary of the invention
The technical problem that the present invention solves is to provide a kind of comprehensive mechanical property preferably for aluminium alloy of power cable and preparation method thereof.
In view of this, the application provides a kind of Al-Fe-V aluminium alloy, comprising:
The Fe of 0.1wt%～0.9wt%;
The A of 0.01wt%～0.3wt%;
The Al of surplus;
Described A is at least one element in V, Ti, Cr, Mn, Ni.
Preferably, the total amount of described A and Fe is no more than 1.0wt%.
Preferably, the tensile strength of described aluminium alloy is more than or equal to 210MPa; Electric conductivity is more than or equal to 60%IACS; Average creep rate is less than or equal to 5 × 10
-2%/h; Tired bending number of times is more than or equal to 15.
Preferably, the elongation at break of described aluminium alloy is more than or equal to 20%; Electric conductivity is more than or equal to 61%IACS; Average creep rate is less than or equal to 8 × 10
-2%/h; Tired bending number of times is more than or equal to 30.
The application also provides the preparation method of described aluminium alloy, comprises the following steps:
A) cast aluminium alloy ingot casting; In described aluminium alloy cast ingot, the content of Fe is 0.1wt%～0.9wt%, and the content of A is 0.01wt%～0.3wt%, with the aluminium of surplus; Described A is at least one element in V, Ti, Cr, Mn, Ni;
B) described aluminium alloy cast ingot is carried out to solution treatment and ageing treatment successively, the aluminium alloy cast ingot after ageing treatment is rolled, obtain aluminium alloy.
Preferably, after step b), also comprise:
Described aluminium alloy is softened to processing.
Preferably, the temperature of described solution treatment is 480 ℃～600 ℃, and the time is 40min～60min; The temperature of described ageing treatment is 350 ℃～450 ℃, and the time is 1h～3h.
Preferably, the temperature of described softening processing is for being more than or equal to 150 ℃, and the time is 3h～6h.
The application also provides a kind of aluminium alloy cable, comprises core, insulation layer, screen layer and protective layer, and described core is aluminium alloy or the prepared aluminium alloy of such scheme described in such scheme.
Preferably, described aluminium alloy cable is copper cable at the current capacity of 90 ℃ of long-time running 70%～80%.
The application provides a kind of Al-Fe-V aluminium alloy, comprising: the Fe of 0.1wt%～0.9wt%; The A of 0.01wt%～0.3wt%; The Al of surplus; Described A is at least one element in V, Ti, Cr, Mn, Ni.The present invention, take aluminium as base, has added micro-iron, and it can improve physical strength and the tensile property of aluminium alloy, can improve high-temperature creep resistance and the anti-fatigue performance of aluminium alloy simultaneously; And the application has added component A, and limit its content, significantly improved intensity and the high temperature creep property of aluminium alloy.In addition, the application, by limiting the total amount of A and Fe, has both improved the performance of aluminium alloy effectively, can not affect again the electrical property and the extension property that worsen aluminium alloy, has effectively ensured the Performance Match of aluminium alloy.
Embodiment
In order further to understand the present invention, below in conjunction with embodiment, the preferred embodiment of the invention is described, but should be appreciated that these are described is for further illustrating the features and advantages of the present invention, rather than limiting to the claimed invention.
The embodiment of the invention discloses a kind of Al-Fe-V aluminium alloy, comprising:
The Fe of 0.1wt%～0.9wt%;
The A of 0.01wt%～0.3wt%;
The Al of surplus;
Described A is at least one element in V, Ti, Cr, Mn, Ni.
For the base aluminum in aluminium alloy, can adopt the fine aluminium of industrial Al99.70, make aluminium alloy prepared by the present invention there is the advantages such as raw material supply abundance, cost is low, buying is convenient; Simultaneously aluminium base refined aluminium or the high-purity grade of aluminium of can also adopting is as matrix alloy, and this is aluminium base has higher quality than conventional aluminium sill, and the product being processed into has more advantage at electrical property and mechanical properties.
In the present invention, take aluminium as matrix, added micro-iron, to realize the raising to aluminium alloy capability.Iron can improve physical strength and the tensile property of aluminium alloy, can improve aluminium base tensile strength, yield strength and resistance toheat, can also put forward heavy alloyed plasticity simultaneously.In the preparation process of aluminium alloy, in alloy, part Fe is with Al
3the form of Fe is separated out, and part Fe also forms Al with Al
2fe
3, Al
4fe
5compound is separated out, and after the high temperature anneal, the solid solution of Fe in aluminium base is less, and the electrical property impact of Fe alloy is very little; But these disperse educts are on good terms and are strengthened the anti-fatigue performance of alloy and the resistance toheat of hot operation.The content of described Fe is 0.1wt%～0.9wt%, and more preferably 0.25wt%～0.75wt%, most preferably is 0.4wt%～0.6wt%.If in aluminium alloy, the content of iron is too low described in the application, the performance of aluminium alloy can not be significantly improved, if the too high levels of iron can significantly reduce electrical property and the anti-fatigue performance of aluminium alloy.
According to the application, in described aluminium alloy, also comprise component A, component A is at least one element in V, Ti, Cr, Mn, Ni, in described aluminium alloy, also comprises a kind of element in V, Ti, Cr, Mn, five kinds of elements of Ni, two kinds of elements, three kinds of elements, four kinds of elements or five kinds of elements.As preferred version, the preferred a kind of element of described A component is as the interpolation element of described aluminium alloy.Described in the application, can carry heavy alloyed intensity and high temperature creep property adding of a kind of element of V, Ti, Cr, Mn and Ni or multiple element, and can improve anti-fatigue performance, Ti, Ni can also improve the processing characteristics of alloy, and V, Mn can improve physical strength, improve erosion resistance.The content of described A is 0.01wt%～0.3wt%, is preferably 0.06wt%～0.22wt%.
The total amount that the application defines described Fe and A is simultaneously no more than 1wt%, is preferably 0.13wt%～0.8wt%.So limit the aggregate relation of Fe and A, both can improve the performance of alloy, be unlikely to again to add the amount of too much alloying element to worsen performance, particularly electrical property and the extension property of alloy, by rational proportion relation, ensure the Performance Match of alloy.
Described in the application, in aluminium alloy, also comprise rare earth elements RE, described rare earth elements RE is one or more in lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), promethium (Pm), samarium (Sm), europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb), lutetium (Lu), scandium (Sc) and yttrium (Y).Described RE not only can carry heavy alloyed electrical property, can also carry heavy alloyed anti-fatigue performance, extends the work-ing life of cable.The content of described RE is preferably no more than 0.3wt%, and more preferably 0.005wt%～0.28wt%, most preferably is 0.05wt%～0.20wt%.As preferred version, the content of Ce described in the application or La accounts for 50% of RE total content.
The application also provides a kind of preparation method of Al-Fe-V aluminium alloy, comprises the following steps:
A) cast aluminium alloy ingot casting; In described aluminium alloy cast ingot, the content of Fe is 0.1wt%～0.9wt%, and the content of A is 0.01wt%～0.3wt%, with the aluminium of surplus; Described A is at least one element in V, Ti, Cr, Mn, Ni;
B) described aluminium alloy cast ingot is carried out to solution treatment and ageing treatment successively, the aluminium alloy cast ingot after ageing treatment is rolled, obtain aluminium alloy.
According to the application, step a) is casting process, obtain aluminium alloy cast ingot, for each element can fully be melted, in aluminium alloy, be uniformly distributed, described castingprocesses is specially: according to the composition of aluminium alloy by Al ingot, Al-Fe ingot, Al-V ingot, Al-Ti ingot, Al-Cr ingot, Al-Mn ingot, Al-Ni ingot, Al-RE ingot or pure metal ingot, be placed in smelting furnace and be more than or equal to melting at 700 ℃, obtain alloy melt, and then alloy melt is cast below at 680 ℃, obtain aluminium alloy cast ingot.
After prepared by aluminium alloy cast ingot, described aluminium alloy cast ingot is heat-treated, according to the present invention, first aluminium alloy cast ingot is carried out to solution treatment, then the aluminium alloy after solution treatment is carried out to ageing treatment; Described solution treatment is that the precipitated phase in aluminium alloy is dissolved in matrix.The application's solution treatment can improve physical strength and the high-temperature creep resistance of aluminium alloy.The temperature of described solution treatment is preferably 480 ℃～600 ℃, more preferably 500 ℃～580 ℃; The time of described solution treatment is preferably 40min～60min.According to the present invention, then the aluminium alloy after solution treatment is carried out to ageing treatment, by ageing treatment, the performance of aluminium alloy is uniformly distributed, properties overall target reaches all good couplings; Mechanical property and electrical property that simultaneously can optimized alloy by ageing treatment, particularly carry heavy alloyed high-temperature creep resistance.The temperature of described ageing treatment is preferably 350 ℃～450 ℃, more preferably 380 ℃～420 ℃; Time is preferably 1h～3h, more preferably 1.5h～2h.Aluminium alloy cast ingot after ageing treatment is rolled, obtains aluminium alloy.
The prepared aluminium alloy of the application is after casting, solution treatment, ageing treatment and rolling, and the tensile strength of the aluminium alloy obtaining is more than or equal to 210MPa; Electric conductivity is more than or equal to 60%IACS; Under 120 ℃ of temperature, 120MPa stress condition, the average creep rate of 1～100h is less than or equal to 5 × 10
-2%/h; Tired bending number of times is more than or equal to 15.
According to the application, the aluminium alloy of preparation can also be softened to processing, described softening processing can be eliminated the unrelieved stress in the course of processing, further improves the performance of aluminium alloy, especially optimize mechanical property and the electrical property of aluminium alloy, improve ductility and the anti-fatigue performance of aluminium alloy.The temperature of described softening processing is preferably greater than or equal to 150 ℃, more preferably 200 ℃～300 ℃; The time of described softening processing is preferably 3h～6h, more preferably 4h～5h.Described aluminium alloy is after softening processing, and the elongation at break of aluminium alloy is more than or equal to 20%; Electric conductivity is more than or equal to 61%IACS; Under 120 ℃ of temperature, 120MPa stress condition, the average creep rate of 1～100h is less than or equal to 8 × 10
-2%/h; Tired bending number of times is more than or equal to 30.
The application provides a kind of Al-Fe-V aluminium alloy, comprising: the Fe of 0.1wt%～0.9wt%; The A of 0.01wt%～0.3wt%; The Al of surplus; Described A is at least one element in V, Ti, Cr, Mn, Ni.The present invention, take aluminium as base, has added micro-iron, and it can improve physical strength and the tensile property of aluminium alloy, can improve high-temperature creep resistance and the anti-fatigue performance of aluminium alloy simultaneously; And the application has added component A, and limit its content, significantly improved intensity and the high temperature creep property of aluminium alloy.In addition, the application, by limiting the total amount of A and Fe, has both improved the performance of aluminium alloy effectively, can not affect again the electrical property and the extension property that worsen aluminium alloy, has effectively ensured the Performance Match of aluminium alloy.
The present invention also provides a kind of aluminium alloy cable, and described aluminium alloy cable comprises core, insulation layer, screen layer and protective layer, and the above-mentioned Al-Fe-V alloy of the application is as the core of aluminium alloy cable.Described aluminium alloy cable is prepared according to mode well known to those skilled in the art, and just the core of power cable is aluminium alloy or prepared aluminium alloy described in the application.According to technique means well known to those skilled in the art, the application's aluminium alloy through cold-drawn, stranded, softening, extruded insulation, stranding, extrude after sheath or armouring, obtain the power cable of power industry.Described in the application, aluminium alloy cable long-time running current capacity at 90 ℃ can reach and be not less than 70%～80% of the long-pending copper cable of same cross-sectional.
In order further to understand the present invention, below in conjunction with embodiment, aluminium alloy provided by the invention and preparation method thereof is elaborated, protection scope of the present invention is not limited by the following examples.
Embodiment 1
(1) aluminium ingot, aluminium-ingot iron, aluminium-vanadium ingot, aluminium-rare-earth ingot are dropped in smelting furnace, be heated to 700 ℃ and make it fusing, standing insulation 30min; Then above-mentioned alloy melt is carried out to furnace refining; In alloy melt, add refining agent, and stir, more standing insulation 30min, melt refining operates in sealed environment; Slag hitting after refining, standing, temperature adjustment to 650 ℃, aluminium alloy is toppled over and is come out of the stove, then after degasification, slagging-off are processed, enters casting machine and cast, and obtains aluminium alloy cast ingot, and ingot casting becomes to be respectively in table 1;
(2) the aluminium alloy cast ingot solution treatment at 480 ℃ step (1) being obtained, after insulation 40min, air cooling, to room temperature, then carries out ageing treatment in 350 ℃, insulation 2h; Then the aluminium alloy after ageing treatment is rolled, obtains aluminium alloy.
The aluminium alloy of preparation is according to the method described above carried out to performance test, and result is referring to table 2.
Embodiment 2
(1) aluminium ingot, aluminium-ingot iron, aluminium-vanadium ingot, aluminium-rare-earth ingot are dropped in smelting furnace, be heated to 720 ℃ and make it fusing, standing insulation 30min; Then above-mentioned alloy melt is carried out to furnace refining; In alloy melt, add refining agent, and stir, more standing insulation 30min, melt refining operates in sealed environment; Slag hitting after refining, standing, temperature adjustment to 660 ℃, aluminium alloy is toppled over and is come out of the stove, then after degasification, slagging-off are processed, enters casting machine and cast, and obtains aluminium alloy cast ingot, and ingot casting becomes to be respectively in table 1;
(2) the aluminium alloy cast ingot solution treatment at 500 ℃ step (1) being obtained, after insulation 50min, air cooling, to room temperature, then carries out ageing treatment in 400 ℃, insulation 1h; Then the aluminium alloy after ageing treatment is rolled, obtains aluminium alloy.
The aluminium alloy of preparation is according to the method described above carried out to performance test, and result is referring to table 2.
Embodiment 3
(1) aluminium ingot, aluminium-ingot iron, aluminium-titanium ingot, aluminium-rare-earth ingot are dropped in smelting furnace, be heated to 700 ℃ and make it fusing, standing insulation 30min; Then above-mentioned alloy melt is carried out to furnace refining; In alloy melt, add refining agent, and stir, more standing insulation 30min, melt refining operates in sealed environment; Slag hitting after refining, standing, temperature adjustment to 650 ℃, aluminium alloy is toppled over and is come out of the stove, then after degasification, slagging-off are processed, enters casting machine and cast, and obtains aluminium alloy cast ingot, and ingot casting becomes to be respectively in table 1;
(2) the aluminium alloy cast ingot solution treatment at 520 ℃ step (1) being obtained, after insulation 50min, air cooling, to room temperature, then carries out ageing treatment in 380 ℃, insulation 2.5h; Then the aluminium alloy after ageing treatment is rolled, obtains aluminium alloy.
The aluminium alloy of preparation is according to the method described above carried out to performance test, and result is referring to table 2.
Embodiment 4
(1) aluminium ingot, aluminium-ingot iron, aluminium-titanium ingot, aluminium-rare-earth ingot are dropped in smelting furnace, be heated to 730 ℃ and make it fusing, standing insulation 30min; Then above-mentioned alloy melt is carried out to furnace refining; In alloy melt, add refining agent, and stir, more standing insulation 30min, melt refining operates in sealed environment; Slag hitting after refining, standing, temperature adjustment to 620 ℃, aluminium alloy is toppled over and is come out of the stove, then after degasification, slagging-off are processed, enters casting machine and cast, and obtains aluminium alloy cast ingot, and ingot casting becomes to be respectively in table 1;
(2) the aluminium alloy cast ingot solution treatment at 550 ℃ step (1) being obtained, after insulation 55min, air cooling, to room temperature, then carries out ageing treatment in 420 ℃, insulation 2.5h; Then the aluminium alloy after ageing treatment is rolled, obtains aluminium alloy.
The aluminium alloy of preparation is according to the method described above carried out to performance test, and result is referring to table 2.
Embodiment 5
(1) aluminium ingot, aluminium-ingot iron, aluminium-chromium ingot, aluminium-rare-earth ingot are dropped in smelting furnace, be heated to 710 ℃ and make it fusing, standing insulation 30min; Then above-mentioned alloy melt is carried out to furnace refining; In alloy melt, add refining agent, and stir, more standing insulation 30min, melt refining operates in sealed environment; Slag hitting after refining, standing, temperature adjustment to 630 ℃, aluminium alloy is toppled over and is come out of the stove, then after degasification, slagging-off are processed, enters casting machine and cast, and obtains aluminium alloy cast ingot, and ingot casting becomes to be respectively in table 1;
(2) the aluminium alloy cast ingot solution treatment at 590 ℃ step (1) being obtained, after insulation 60min, air cooling, to room temperature, then carries out ageing treatment in 440 ℃, insulation 1.5h; Then the aluminium alloy after ageing treatment is rolled, obtains aluminium alloy.
The aluminium alloy of preparation is according to the method described above carried out to performance test, and result is referring to table 2.
Embodiment 6
(1) aluminium ingot, aluminium-ingot iron, aluminium-chromium ingot, aluminium-rare-earth ingot are dropped in smelting furnace, be heated to 730 ℃ and make it fusing, standing insulation 30min; Then above-mentioned alloy melt is carried out to furnace refining; In alloy melt, add refining agent, and stir, more standing insulation 30min, melt refining operates in sealed environment; Slag hitting after refining, standing, temperature adjustment to 670 ℃, aluminium alloy is toppled over and is come out of the stove, then after degasification, slagging-off are processed, enters casting machine and cast, and obtains aluminium alloy cast ingot, and ingot casting becomes to be respectively in table 1;
(2) the aluminium alloy cast ingot solution treatment at 580 ℃ step (1) being obtained, after insulation 60min, air cooling, to room temperature, then carries out ageing treatment in 400 ℃, insulation 1.5h; Then the aluminium alloy after ageing treatment is rolled, obtains aluminium alloy.
The aluminium alloy of preparation is according to the method described above carried out to performance test, and result is referring to table 2.
Embodiment 7
The flow process of preparing aluminium alloy with embodiment 1 is identical, and difference is: in smelting furnace, added aluminium ingot, aluminium-ingot iron, aluminium-manganese ingot, aluminium-rare-earth ingot, and there is change in the composition of ingot casting, and as shown in table 1.
Embodiment 8
The flow process of preparing aluminium alloy with embodiment 1 is identical, and difference is: in smelting furnace, added aluminium ingot, aluminium-ingot iron, aluminium-manganese ingot, aluminium-rare-earth ingot, and there is change in the composition of ingot casting, and as shown in table 1.
Embodiment 9
The flow process of preparing aluminium alloy with embodiment 1 is identical, and difference is: in smelting furnace, added aluminium ingot, aluminium-ingot iron, aluminium-nickel ingot, aluminium-rare-earth ingot, and there is change in the composition of ingot casting, and as shown in table 1.
Embodiment 10
The flow process of preparing aluminium alloy with embodiment 1 is identical, and difference is: in smelting furnace, added aluminium ingot, aluminium-ingot iron, aluminium-nickel ingot, aluminium-rare-earth ingot, and there is change in the composition of ingot casting, and as shown in table 1.
Embodiment 11
The flow process of preparing aluminium alloy with embodiment 1 is identical, and difference is: in smelting furnace, added aluminium ingot, aluminium-ingot iron, aluminium-vanadium ingot, aluminium-titanium ingot, aluminium-rare-earth ingot; Under the aluminium alloy inert atmosphere of finally being prepared by step (2), be heated to 210 ℃ and soften processing, insulation 4.5h, obtains aluminium alloy.The component of aluminium alloy prepared by the present embodiment is as shown in table 1.
Embodiment 12
The flow process of preparing aluminium alloy with embodiment 1 is identical, and difference is: in smelting furnace, added aluminium ingot, aluminium-ingot iron, aluminium-vanadium ingot, aluminium-chromium ingot, aluminium-rare-earth ingot; Under the aluminium alloy inert atmosphere of finally being prepared by step (2), be heated to 180 ℃ and soften processing, insulation 4h, obtains aluminium alloy.The component of aluminium alloy prepared by the present embodiment is as shown in table 1.
Embodiment 13
The flow process of preparing aluminium alloy with embodiment 1 is identical, and difference is: in smelting furnace, added aluminium ingot, aluminium-ingot iron, aluminium-vanadium ingot, aluminium-manganese ingot, aluminium-rare-earth ingot; Under the aluminium alloy inert atmosphere of finally being prepared by step (2), be heated to 160 ℃ and soften processing, insulation 6h, obtains aluminium alloy.The component of aluminium alloy prepared by the present embodiment is as shown in table 1.
Embodiment 14
The flow process of preparing aluminium alloy with embodiment 1 is identical, and difference is: in smelting furnace, added aluminium ingot, aluminium-ingot iron, aluminium-vanadium ingot, aluminium-nickel ingot, aluminium-rare-earth ingot; Under the aluminium alloy inert atmosphere of finally being prepared by step (2), be heated to 200 ℃ and soften processing, insulation 5h, obtains aluminium alloy.The component of aluminium alloy prepared by the present embodiment is as shown in table 1.
Embodiment 15
The flow process of preparing aluminium alloy with embodiment 1 is identical, and difference is: in smelting furnace, added aluminium ingot, aluminium-ingot iron, aluminium-titanium ingot, aluminium-chromium ingot, aluminium-rare-earth ingot; Under the aluminium alloy inert atmosphere of finally being prepared by step (2), be heated to 190 ℃ and soften processing, insulation 5h, obtains aluminium alloy.The component of aluminium alloy prepared by the present embodiment is as shown in table 1.
Embodiment 16
The flow process of preparing aluminium alloy with embodiment 1 is identical, and difference is: in smelting furnace, added aluminium ingot, aluminium-ingot iron, aluminium-titanium ingot, aluminium-manganese ingot, aluminium-rare-earth ingot; Under the aluminium alloy inert atmosphere of finally being prepared by step (2), be heated to 220 ℃ and soften processing, insulation 3h, obtains aluminium alloy.The component of aluminium alloy prepared by the present embodiment is as shown in table 1.
Embodiment 17
The flow process of preparing aluminium alloy with embodiment 1 is identical, and difference is: in smelting furnace, added aluminium ingot, aluminium-ingot iron, aluminium-titanium ingot, aluminium-nickel ingot, aluminium-rare-earth ingot; Under the aluminium alloy inert atmosphere of finally being prepared by step (2), be heated to 160 ℃ and soften processing, insulation 5h, obtains aluminium alloy.The component of aluminium alloy prepared by the present embodiment is as shown in table 1.
Embodiment 18
The flow process of preparing aluminium alloy with embodiment 1 is identical, and difference is: in smelting furnace, added aluminium ingot, aluminium-ingot iron, aluminium-chromium ingot, aluminium-manganese ingot, aluminium-rare-earth ingot; Under the aluminium alloy inert atmosphere of finally being prepared by step (2), be heated to 200 ℃ and soften processing, insulation 5h, obtains aluminium alloy.The component of aluminium alloy prepared by the present embodiment is as shown in table 1.
Embodiment 19
The flow process of preparing aluminium alloy with embodiment 1 is identical, and difference is: in smelting furnace, added aluminium ingot, aluminium-ingot iron, aluminium-vanadium ingot, aluminium-titanium ingot, aluminium-chromium ingot, aluminium-rare-earth ingot; Under the aluminium alloy inert atmosphere of finally being prepared by step (2), be heated to 210 ℃ and soften processing, insulation 3h, obtains aluminium alloy.The component of aluminium alloy prepared by the present embodiment is as shown in table 1.
Embodiment 20
The flow process of preparing aluminium alloy with embodiment 1 is identical, and difference is: in smelting furnace, added aluminium ingot, aluminium-ingot iron, aluminium-titanium ingot, aluminium-manganese ingot, aluminium-nickel ingot, aluminium-rare-earth ingot; Under the aluminium alloy inert atmosphere of finally being prepared by step (2), be heated to 170 ℃ and soften processing, insulation 5h, obtains aluminium alloy.The component of aluminium alloy prepared by the present embodiment is as shown in table 1.
Embodiment 21
The flow process of preparing aluminium alloy with embodiment 1 is identical, and difference is: in smelting furnace, added aluminium ingot, aluminium-ingot iron, aluminium-vanadium ingot, aluminium-titanium ingot, aluminium-chromium ingot, aluminium-manganese ingot, aluminium-rare-earth ingot; Under the aluminium alloy inert atmosphere of finally being prepared by step (2), be heated to 155 ℃ and soften processing, insulation 5h, obtains aluminium alloy.The component of aluminium alloy prepared by the present embodiment is as shown in table 1.
Embodiment 22
The flow process of preparing aluminium alloy with embodiment 1 is identical, and difference is: in smelting furnace, added aluminium ingot, aluminium-ingot iron, aluminium-titanium ingot, aluminium-chromium ingot, aluminium-manganese ingot, aluminium-nickel ingot, aluminium-rare-earth ingot; Under the aluminium alloy inert atmosphere of finally being prepared by step (2), be heated to 155 ℃ and soften processing, insulation 5h, obtains aluminium alloy.The component of aluminium alloy prepared by the present embodiment is as shown in table 1.
Embodiment 23
The flow process of preparing aluminium alloy with embodiment 1 is identical, and difference is: in smelting furnace, added aluminium ingot, aluminium-ingot iron, aluminium-vanadium ingot, aluminium-titanium ingot, aluminium-chromium ingot, aluminium-manganese ingot, aluminium-nickel ingot, aluminium-rare-earth ingot; Under the aluminium alloy inert atmosphere of finally being prepared by step (2), be heated to 155 ℃ and soften processing, insulation 5h, obtains aluminium alloy.The component of aluminium alloy prepared by the present embodiment is as shown in table 1.
The component list (wt%) of aluminium alloy prepared by table 1 embodiment
The performance test data table of aluminium alloy prepared by table 2 embodiment
The explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of the claims in the present invention.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the present invention.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. an Al-Fe-V aluminium alloy, comprising:
The Fe of 0.1wt%～0.9wt%;
The A of 0.01wt%～0.3wt%;
The Al of surplus;
Described A is at least one element in V, Ti, Cr, Mn, Ni.
2. aluminium alloy according to claim 1, is characterized in that, the total amount of described A and Fe is no more than 1.0wt%.
3. according to the aluminium alloy described in claim 1～2 any one, it is characterized in that, the tensile strength of described aluminium alloy is more than or equal to 210MPa; Electric conductivity is more than or equal to 60%IACS; Average creep rate is less than or equal to 5 × 10
-2%/h; Tired bending number of times is more than or equal to 15.
4. according to the aluminium alloy described in claim 1～2 any one, it is characterized in that, the elongation at break of described aluminium alloy is more than or equal to 20%; Electric conductivity is more than or equal to 61%IACS; Average creep rate is less than or equal to 8 × 10
-2%/h; Tired bending number of times is more than or equal to 30.
5. the preparation method of aluminium alloy described in claim 1～4 any one, comprises the following steps:
A) cast aluminium alloy ingot casting; In described aluminium alloy cast ingot, the content of Fe is 0.1wt%～0.9wt%, and the content of A is 0.01wt%～0.3wt%, with the aluminium of surplus; Described A is at least one element in V, Ti, Cr, Mn, Ni;
B) described aluminium alloy cast ingot is carried out to solution treatment and ageing treatment successively, the aluminium alloy cast ingot after ageing treatment is rolled, obtain aluminium alloy.
6. preparation method according to claim 5, is characterized in that, after step b), also comprises:
Described aluminium alloy is softened to processing.
7. according to the preparation method described in claim 5 or 6, it is characterized in that, the temperature of described solution treatment is 480 ℃～600 ℃, and the time is 40min～60min; The temperature of described ageing treatment is 350 ℃～450 ℃, and the time is 1h～3h.
8. preparation method according to claim 6, is characterized in that, the temperature of described softening processing is for being more than or equal to 150 ℃, and the time is 3h～6h.
9. an aluminium alloy cable, comprises core, insulation layer, screen layer and protective layer, it is characterized in that, described core is aluminium alloy or the prepared aluminium alloy of claim 5～8 any one described in claim 1～4 any one.
10. aluminium alloy cable according to claim 9, is characterized in that, described aluminium alloy cable is copper cable at the current capacity of 90 ℃ of long-time running 70%～80%.
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