CN109295359B - A kind of aluminium alloy and preparation method thereof of highly conductive high intensity - Google Patents
A kind of aluminium alloy and preparation method thereof of highly conductive high intensity Download PDFInfo
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- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
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- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
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Abstract
The present invention relates to technical field of aluminum alloy technology, and in particular to a kind of aluminium alloy and preparation method thereof of highly conductive high intensity, aluminium alloy includes the element of following weight percent: Si:0.4-0.45%；Mg:0.5-0.55%；B:0.03-0.08%；Ti:0.007-0.015%；Ce:0.1-0.2%；Er:0.05-0.2%；Fe:0.2-0.3%；Mn:0.005-0.015%；Cr:0.008-0.02%；Zr:0.01-0.02%；Cu:0.01-0.04%；Zn:0.01-0.05%；Remaining is aluminium and inevitable impurity.Aluminium alloy tensile strength (170MPa or more), yield strength and conductivity (57% or more) with higher of the present invention.
Description
Technical field
The present invention relates to technical field of aluminum alloy technology, and in particular to the aluminium alloy of the highly conductive high intensity of one kind and its preparation side
Method.
Background technique
The trade mark and state of the electrical conductivity alloy product using extrusion process production domestic at present mainly have 6063-T5,6063-
T6,6101-T6,6101B-T6,6101B-F, 6101-T65, wherein 6063-T5,6063-T6,6101-T6,6101B-T6 aluminium close
The tensile strength of golden squeeze wood is usually in 170~260Mpa, but bulk conductivity at 20 DEG C is all in 56.5%IACS or less；
6101BF squeeze wood conductivity is in 56.5%IACS or more, but tensile strength is usually in 130MPa or less.Therefore, in actual production
In, 6063-T5,6063-T6,6101-T6,6101B-T6,6101B-F alloy cannot concurrently reach to high conduction performance and power
Learn the electroconductive aluminium strip product design requirement of performance requirement.
The aluminium that the patent of invention that number of patent application is 201710325747.8 discloses a kind of high-strength high-conductivity closes
Golden material, consisting of: 0.43%-0.46%Si ,≤0.20%Fe ,≤0.01%Cu ,≤0.01%Mn, 0.53-0.57%
Mg ,≤0.01%Cr, 0.005%-0.015%Ti, 0.03%-0.05%B, remaining is Al.It is tight by forming to raw material
Lattice control and long ageing treatment, aluminum alloy materials conductivity >=57.0% made, tensile strength >=195MPa, surrender are strong
Degree >=210Mpa, elongation percentage are greater than >=8%.Only as Mn≤0.005%, Cr≤0.007% and Cu≤0.003%, aluminium
Alloy material just has 58.1% or more preferable conductivity and preferable intensity, but simultaneously, due to be difficult to avoid Mn,
The addition of the impurity such as Cr and Cu, thus the production control cost of material can be not only greatly increased, the product quality produced is equal
Even property is also poor；And long ageing treatment also will increase the burden of production.
Summary of the invention
In order to overcome shortcoming and defect existing in the prior art, the purpose of the present invention is to provide a kind of high-intensitive height to lead
Aluminum alloy materials of electrical property and preparation method thereof, production cost is low, and product uniformity is high.
The purpose of the invention is achieved by the following technical solution:
A kind of aluminium alloy of highly conductive high intensity, the element including following weight percent:
Si:0.4-0.45%；Mg:0.5-0.55%；B:0.03-0.08%；Ti:0.007-0.015%；Ce:0.1-
0.2%；Er:0.05-0.2%；Fe:0.2-0.3%；Mn:0.005-0.015%；Cr:0.008-0.02%；Zr:0.01-
0.02%；Cu:0.01-0.04%；Zn:0.01-0.05%；Remaining is aluminium and inevitable impurity.
In the present invention, suitable Ce, Er and Zr joined in aluminium alloy, the addition of Ce can cooperate B to enable aluminum alloy to
Crystal grain is more tiny, can effectively improve the intensity of aluminium alloy, but B is easy to cause the conductivity of aluminium alloy to decline, and the addition of Ce
It can then overcome this problem, eutectic lattice coarse handful shape also be precipitated in aluminium alloy while crystal grain refinement, to conduction electrons
Heat dissipation reduces, thus the conductivity of aluminium alloy is improved；The addition of Er can form stable intermetallic with Si, Fe
Object reduces the influence of Fe, Si to intensity of aluminum alloy, the intensity of alloy is improved while significantly reducing alloy conductive；
The Solid soluble Nb of Zr of the invention in aluminium alloy is lower, is mainly precipitated in the form of interphase in ag(e)ing process, thus significant
The intensity for improving aluminium alloy will not be substantially reduced the conductivity of aluminium alloy simultaneously.
The present invention is rationally designed by the composition to each element, maintains Fe, Mn, Cr, Cu and Zn of the present invention
In higher accounting, thus the addition of each element is easier to be controlled, obtained aluminium alloy also has preferable intensity
And electric conductivity.
Preferably, the aluminium alloy includes the element of following weight percent:
Si:0.4-0.45%；Mg:0.5-0.55%；B:0.05-0.07%；Ti:0.007-0.015%；Ce:0.1-
0.2%；Er:0.05-0.15%；Fe:0.2-0.3%；Mn:0.007-0.011%；Cr:0.008-0.01%；Zr:0.01-
0.02%；Cu:0.01-0.03%；Zn:0.01-0.03%；Remaining is aluminium and inevitable impurity.
Wherein, the weight ratio of Si and Mg is 1:1.25 in the aluminium alloy.
The present invention can properly increase aluminium alloy by further limiting the weight ratio of Si and Mg, the magnesium fortified property of the silicon of generation
Intensity.
It is further preferred that the aluminium alloy is made of the element of following weight percent:
Si:0.4%；Mg:0.5%；B:0.06%；Ti:0.011%；Ce:0.15%；Er:0.1%；Fe:0.25%；
Mn:0.009%；Cr:0.009%；Zr:0.015%；Cu:0.02%；Zn:0.02%；Remaining for aluminium and inevitably it is miscellaneous
Matter.
Wherein, the inevitable impurity is not more than 0.1wt%, and every kind of element in inevitable impurity is not more than
0.03wt%.
A kind of preparation method of the aluminium alloy of highly conductive high intensity as described above, includes the following steps:
(1) molten aluminum is formed after aluminium ingot being heated to 670-710 DEG C, is added among Al-Si and is closed into the molten aluminum according to the ratio
Gold, Al-B intermediate alloy, Al-Ti intermediate alloy, Al-Ce intermediate alloy, Al-Er intermediate alloy, Al-Fe intermediate alloy, Al-Mn
Intermediate alloy, Al-Cr intermediate alloy, Al-Zr intermediate alloy, Al-Cu intermediate alloy, Al-Zn intermediate alloy and Mg are mixed,
Aluminium alloy is made；
(2) 1-2h is kept the temperature at a temperature of the aluminium alloy being warming up to 710-730 DEG C, it will be using inert gas as the essence of carrier
Refining agent, which is blown into aluminium alloy, to be refined, and processing is then filtered；
(3) by the aluminium alloy injection mold after filtration treatment, aluminium alloy ingots is made, then carries out homogenization and with furnace
It is cooling；
(4) aluminium alloy ingots is carried out squeezing solid melt processed, aluminium alloy extrusions is made in deformation coefficient 10-13；
(5) aluminium alloy extrusions is subjected to two-stage time effect processing to get the aluminium alloy for arriving the highly conductive high intensity.
The present invention successively carries out melting, refining, annealing, extruding and two-stage time effect to raw material, enables aluminum alloy to reach best
Solid solution condition and homogenized condition, enhance the phase interface strain energy of alloy, obtained under the premise of guaranteeing intensity of aluminum alloy
Higher conductivity.
Wherein, in the step (2), inert gas is nitrogen, nitrogen flow rate 0.8-1.2m3/h。
Wherein, in the step (2), the dosage of refining agent is the 0.1-0.3wt% of aluminium alloy, and refining agent includes following weight
Measure the raw material of number: 12-16 parts of potassium fluoroaluminate, 10-16 parts of calcirm-fluoride, 14-18 parts of potassium chloride, 7-11 parts of barium sulfate, magnesium nitride
2-4 parts, 4-9 parts of carbon trichloride, 1-2 parts of active carbon, refining time 10-20min.
The refining agent dust removal rate that the present invention uses is high, treated aluminium alloy stomata and oxide content significant decrease,
The dense micro-structure that aluminium alloy ingots is made after cooling is uniform, hence it is evident that reduces crystallite dimension, improves the intensity of aluminium alloy.
Wherein, in the step (3), the holding temperature of homogenization is 550-580 DEG C, soaking time 2h-2.5h.
The present invention can eliminate microsegregation by the suitable annealing temperature of optimum choice and annealing time, refine crystal grain,
Internal stress is eliminated, moulding is improved, is conducive to subsequent extrusion process, and makes the aluminium alloy extrusions finally obtained that there is preferable power
Learn intensity and conductivity.
Wherein, in the step (4), the specific steps for squeezing solid melt processed are as follows: the aluminium alloy extrusions heating
To 480-510 DEG C, keeps the temperature 4.0-5.5h and be squeezed and deformed, then water hardening.
The present invention enables the solute atoms such as Fe, Si, Mg, Zn incorporate in alloy material by solution treatment, utilizes distortion of lattice
The movement of dislocation in the base is hindered, aluminium alloy extrusions obtained is because of hardness with higher and tensile strength.
Wherein, in the step (5), two-stage time effect processing includes first time ageing treatment and second of ageing treatment, the
Ageing treatment is the temperature 1.5-2.5h at 195-205 DEG C, and second of ageing treatment is the temperature at 230-250 DEG C
Keep the temperature 3-6h.
The present invention is attenuated by the crystal boundary that two-stage time effect is handled after making solid solution, makes part crystal boundary no longer continuous, after making solid solution
The back dissolving of part object phase forms supersaturated solid solution into aluminum substrate, make aluminium alloy extrusions obtained have preferable conductivity,
Hardness and tensile strength.
The beneficial effects of the present invention are: in the present invention, it joined suitable Ce, Er and Zr in aluminium alloy, Ce's adds
Enter that the crystal grain that B can be cooperated to enable aluminum alloy to is more tiny, can effectively improve the intensity of aluminium alloy, but B is easy to cause aluminium alloy
Conductivity decline, and the addition of Ce can then overcome this problem has also been precipitated in aluminium alloy while crystal grain refinement eutectic
The coarse handful shape of lattice, dissipating to conduction electrons reduces, thus the conductivity of aluminium alloy is improved；The addition of Er can be with Si, Fe
Stable intermetallic compound is formed, the influence of Fe, Si to intensity of aluminum alloy is reduced, is significantly reducing the same of alloy conductive
When improve the intensity of alloy；The Solid soluble Nb of Zr of the invention in aluminium alloy is lower, mainly with interphase in ag(e)ing process
Form is precipitated, thus in the intensity for significantly improving aluminium alloy while will not be substantially reduced the conductivity of aluminium alloy.
Detailed description of the invention
Fig. 1 is the micro-organization chart of the aluminium alloy of embodiment 1；
Specific embodiment
For the ease of the understanding of those skilled in the art, make below with reference to 1 couple of present invention of examples and drawings further
Illustrate, the content that embodiment refers to not is limitation of the invention.
Embodiment 1
A kind of aluminium alloy of highly conductive high intensity, is made of the element of following weight percent:
Si:0.4%；Mg:0.5%；B:0.06%；Ti:0.011%；Ce:0.15%；Er:0.1%；Fe:0.25%；
Mn:0.009%；Cr:0.009%；Zr:0.015%；Cu:0.02%；Zn:0.02%；Remaining for aluminium and inevitably it is miscellaneous
Matter.
Wherein, the inevitable impurity is not more than 0.1wt%, and every kind of element in inevitable impurity is not more than
0.03wt%.
A kind of preparation method of the aluminium alloy of highly conductive high intensity as described above, includes the following steps:
(1) aluminium ingot is heated to form molten aluminum after 690 DEG C, according to the ratio into the molten aluminum be added Al-Si intermediate alloy,
Al-B intermediate alloy, Al-Ti intermediate alloy, Al-Ce intermediate alloy, Al-Er intermediate alloy, Al-Fe intermediate alloy, in Al-Mn
Between alloy, Al-Cr intermediate alloy, Al-Zr intermediate alloy, Al-Cu intermediate alloy, Al-Zn intermediate alloy and Mg mixed, make
Obtain aluminium alloy；
(2) aluminium alloy is warming up at a temperature of 730 DEG C and keeps the temperature 1.5h, it will be using inert gas as the refining agent of carrier
It is blown into aluminium alloy and is refined, be then filtered processing；
(3) by the aluminium alloy injection mold after filtration treatment, aluminium alloy ingots is made, then carries out homogenization and with furnace
It is cooling；
(4) aluminium alloy ingots is subjected to extrusion process, aluminium alloy extrusions is made in deformation coefficient 11.5；
(5) aluminium alloy extrusions is subjected to two-stage time effect processing to get the aluminium alloy for arriving the highly conductive high intensity.
Wherein, in the step (2), inert gas is nitrogen, nitrogen flow rate 1.0m3/h。
Wherein, in the step (2), the dosage of refining agent is the 0.2wt% of aluminium alloy, and refining agent includes following parts by weight
Several raw material: 14 parts of potassium fluoroaluminate, 13 parts of calcirm-fluoride, 16 parts of potassium chloride, 9 parts of barium sulfate, 3 parts of magnesium nitride, carbon trichloride 6.5
Part, 1.5 parts of active carbon, refining time 15min.
Wherein, in the step (3), the holding temperature of homogenization is 580 DEG C, soaking time 2h.
Wherein, in the step (4), the specific steps for squeezing solid melt processed are as follows: the aluminium alloy extrusions heating
To 500 DEG C, keeps the temperature 4h and be squeezed and deformed, then water hardening.
Wherein, in the step (5), two-stage time effect processing includes first time ageing treatment and second of ageing treatment, the
Ageing treatment is the temperature 2h at 200 DEG C, and second of ageing treatment is the temperature 4.5h at 240 DEG C.
Fig. 1 is the micro-organization chart of embodiment 1, can see from the figure and the eutectic coarse handful shape of lattice is precipitated in aluminium alloy,
Thus aluminium alloy extrusions conductivity with higher of the invention.
Embodiment 2
A kind of aluminium alloy of highly conductive high intensity, is made of the element of following weight percent:
Si:0.45%；Mg:0.55%；B:0.03%；Ti:0.007%；Ce:0.1%；Er:0.05%；Fe:0.2%；
Mn:0.005%；Cr:0.008%；Zr:0.01%；Cu:0.01%；Zn:0.01%；Remaining is aluminium and inevitable impurity.
Wherein, the inevitable impurity is not more than 0.1wt%, and every kind of element in inevitable impurity is not more than
0.03wt%.
A kind of preparation method of the aluminium alloy of highly conductive high intensity as described above, includes the following steps:
(1) aluminium ingot is heated to form molten aluminum after 670 DEG C, according to the ratio into the molten aluminum be added Al-Si intermediate alloy,
Al-B intermediate alloy, Al-Ti intermediate alloy, Al-Ce intermediate alloy, Al-Er intermediate alloy, Al-Fe intermediate alloy, in Al-Mn
Between alloy, Al-Cr intermediate alloy, Al-Zr intermediate alloy, Al-Cu intermediate alloy, Al-Zn intermediate alloy and Mg mixed, make
Obtain aluminium alloy；
(2) aluminium alloy is warming up at a temperature of 710 DEG C and keeps the temperature 1h, will blown by the refining agent of carrier of inert gas
Enter in aluminium alloy and refined, is then filtered processing；
(3) by the aluminium alloy injection mold after filtration treatment, aluminium alloy ingots is made, then carries out homogenization and with furnace
It is cooling；
(4) aluminium alloy ingots is subjected to extrusion process, aluminium alloy extrusions is made in deformation coefficient 10；
(5) aluminium alloy extrusions is subjected to two-stage time effect processing to get the aluminium alloy for arriving the highly conductive high intensity.
Wherein, in the step (2), inert gas is nitrogen, nitrogen flow rate 0.8m3/h。
Wherein, in the step (2), the dosage of refining agent is the 0.1wt% of aluminium alloy, and refining agent includes following parts by weight
Several raw materials: 12 parts of potassium fluoroaluminate, 10 parts of calcirm-fluoride, 14 parts of potassium chloride, 7 parts of barium sulfate, 2 parts of magnesium nitride, 4 parts of carbon trichloride,
1 part of active carbon, refining time 10min.
Wherein, in the step (3), the holding temperature of homogenization is 560 DEG C, soaking time 2h.
Wherein, in the step (4), the specific steps for squeezing solid melt processed are as follows: the aluminium alloy extrusions heating
To 480 DEG C, keeps the temperature 5h and be squeezed and deformed, then water hardening.
Wherein, in the step (5), two-stage time effect processing includes first time ageing treatment and second of ageing treatment, the
Ageing treatment is the temperature 1.5h at 195 DEG C, and second of ageing treatment is the temperature 3h at 230 DEG C.
Embodiment 3
A kind of aluminium alloy of highly conductive high intensity, is made of the element of following weight percent:
Si:0.42%；Mg:0.52%；B:0.08%；Ti:0.015%；Ce:0.2%；Er:0.2%；Fe:0.3%；
Mn:0.015%；Cr:0.02%；Zr:0.02%；Cu:0.04%；Zn:0.05%；Remaining is aluminium and inevitable impurity.
Wherein, the inevitable impurity is not more than 0.1wt%, and every kind of element in inevitable impurity is not more than
0.03wt%.
A kind of preparation method of the aluminium alloy of highly conductive high intensity as described above, includes the following steps:
(1) aluminium ingot is heated to form molten aluminum after 710 DEG C, according to the ratio into the molten aluminum be added Al-Si intermediate alloy,
Al-B intermediate alloy, Al-Ti intermediate alloy, Al-Ce intermediate alloy, Al-Er intermediate alloy, Al-Fe intermediate alloy, in Al-Mn
Between alloy, Al-Cr intermediate alloy, Al-Zr intermediate alloy, Al-Cu intermediate alloy, Al-Zn intermediate alloy and Mg mixed, make
Obtain aluminium alloy；
(2) aluminium alloy is warming up at a temperature of 730 DEG C and keeps the temperature 2h, will blown by the refining agent of carrier of inert gas
Enter in aluminium alloy and refined, is then filtered processing；
(3) by the aluminium alloy injection mold after filtration treatment, aluminium alloy ingots is made, then carries out homogenization and with furnace
It is cooling；
(4) aluminium alloy ingots is subjected to extrusion process, aluminium alloy extrusions is made in deformation coefficient 13；
(5) aluminium alloy extrusions is subjected to two-stage time effect processing to get the aluminium alloy for arriving the highly conductive high intensity.
Wherein, in the step (2), inert gas is nitrogen, nitrogen flow rate 1.2m3/h。
Wherein, in the step (2), the dosage of refining agent is the 0.3wt% of aluminium alloy, and refining agent includes following parts by weight
Several raw materials: 16 parts of potassium fluoroaluminate, 16 parts of calcirm-fluoride, 18 parts of potassium chloride, 11 parts of barium sulfate, 4 parts of magnesium nitride, 9 parts of carbon trichloride,
2 parts of active carbon, refining time 20min.
Wherein, in the step (3), the holding temperature of homogenization is 570 DEG C, soaking time 1.5h.
Wherein, in the step (4), the specific steps for squeezing solid melt processed are as follows: the aluminium alloy extrusions heating
To 490 DEG C, keeps the temperature 5h and be squeezed and deformed, then water hardening.
Wherein, in the step (5), two-stage time effect processing includes first time ageing treatment and second of ageing treatment, the
Ageing treatment is the temperature 2.5h at 205 DEG C, and second of ageing treatment is the temperature 6h at 250 DEG C.
Embodiment 4
The present embodiment the difference from embodiment 1 is that:
A kind of aluminium alloy of highly conductive high intensity, is made of the element of following weight percent:
Si:0.43%；Mg:0.55%；B:0.05%；Ti:0.007%；Ce:0.1%；Er:0.05%；Fe:0.2；Mn:
0.007%；Cr:0.008%；Zr:0.01%；Cu:0.01%；Zn:0.01%；Remaining is aluminium and inevitable impurity.
Embodiment 5
The present embodiment the difference from embodiment 1 is that:
A kind of aluminium alloy of highly conductive high intensity, is made of the element of following weight percent:
Si:0.44%；Mg:0.54%；B:0.07%；Ti:0.015%；Ce:0.2%；Er:0.15%；Fe:0.3%；
Mn:0.011%；Cr:0.01%；Zr:0.02%；Cu:0.03%；Zn:0.01-0.03%；Remaining is for aluminium and inevitably
Impurity.
Embodiment 6
The present embodiment the difference from embodiment 1 is that:
Wherein, in the step (5), two-stage time effect processing includes first time ageing treatment and second of ageing treatment, the
Ageing treatment is the temperature 2h at 220 DEG C, and second of ageing treatment is the temperature 4.5h at 260 DEG C.
Embodiment 7
The present embodiment the difference from embodiment 1 is that:
Wherein, in the step (5), two-stage time effect processing includes first time ageing treatment and second of ageing treatment, the
Ageing treatment is the temperature 2h at 180 DEG C, and second of ageing treatment is the temperature 4.5h at 200 DEG C.
The test of tensile strength, yield strength and conductivity is carried out to the aluminium alloy of embodiment 1-7, test result is as follows
Table:
| Tensile strength (MPa) | Yield strength (MPa) | Conductivity (%IACS) | |
| Embodiment 1 | 251 | 244 | 62.3 |
| Embodiment 2 | 243 | 238 | 60.1 |
| Embodiment 3 | 242 | 235 | 60.3 |
| Embodiment 4 | 246 | 240 | 60.5 |
| Embodiment 5 | 246 | 241 | 61.1 |
| Embodiment 6 | 232 | 228 | 58.4 |
| Embodiment 7 | 170 | 165 | 56.3 |
As seen from the above table, aluminium alloy of the present invention tensile strength with higher, yield strength and conductivity, and from implementation
The comparison of example 1,6,7 can effectively improve tensile strength, the surrender of aluminium alloy it is found that by the control to aging temperature
Intensity and conductivity.
Above-described embodiment is the preferable implementation of the present invention, and in addition to this, the present invention can be realized with other way, In
Do not depart under the premise of present inventive concept it is any obviously replace it is within the scope of the present invention.
Claims (7)
1. a kind of preparation method of the aluminium alloy of highly conductive high intensity, it is characterised in that: the aluminium alloy is by following weight percent
The element of ratio forms: Si:0.4-0.45%；Mg:0.5-0.55%；B:0.03-0.08%；Ti:0.007-0.015%；Ce:
0.1-0.2%；Er:0.05-0.2%；Fe:0.2-0.3%；Mn:0.005-0.015%；Cr:0.008-0.02%；Zr:
0.01-0.02%；Cu:0.01-0.04%；Zn:0.01-0.05%；Remaining is aluminium and inevitable impurity；It is highly conductive high-strength
The preparation method of the aluminium alloy of degree includes the following steps:
(1) molten aluminum is formed after aluminium ingot being heated to 670-710 DEG C, according to the ratio into the molten aluminum be added Al-Si intermediate alloy,
Al-B intermediate alloy, Al-Ti intermediate alloy, Al-Ce intermediate alloy, Al-Er intermediate alloy, Al-Fe intermediate alloy, in Al-Mn
Between alloy, Al-Cr intermediate alloy, Al-Zr intermediate alloy, Al-Cu intermediate alloy, Al-Zn intermediate alloy and Mg mixed, make
Obtain aluminium alloy；
(2) 1-2h is kept the temperature at a temperature of the aluminium alloy being warming up to 710-730 DEG C, it will be using inert gas as the refining agent of carrier
It is blown into aluminium alloy and is refined, be then filtered processing；
(3) by the aluminium alloy injection mold after filtration treatment, aluminium alloy ingots is made, then carries out homogenization and cold with furnace
But；
(4) aluminium alloy ingots is carried out squeezing solid melt processed, aluminium alloy extrusions is made in deformation coefficient 10-13；
(5) aluminium alloy extrusions is subjected to two-stage time effect processing to get the aluminium alloy for arriving the highly conductive high intensity；
Wherein, in the step (3), the holding temperature of homogenization is 550-580 DEG C, soaking time 2h-2.5h；
Wherein, in the step (5), two-stage time effect processing includes first time ageing treatment and second of ageing treatment, first time
Ageing treatment is the temperature 1.5-2.5h at 195-205 DEG C, and second of ageing treatment is the temperature at 230-250 DEG C
3-6h。
2. the preparation method of the aluminium alloy of the highly conductive high intensity of one kind according to claim 1, it is characterised in that: the step
Suddenly in (2), inert gas is nitrogen, nitrogen flow rate 0.8-1.2m3/h。
3. the preparation method of the aluminium alloy of the highly conductive high intensity of one kind according to claim 1, it is characterised in that: the step
Suddenly in (4), the specific steps of solid melt processed are squeezed are as follows: the aluminium alloy extrusions is warming up to 480-510 DEG C, keeps the temperature 4.0-5.5h
And it is squeezed and deformed, then water hardening.
4. a kind of aluminium alloy of highly conductive high intensity, it is characterised in that: the highly conductive height as described in claim 1-3 any one
The preparation method of the aluminium alloy of intensity is made.
5. the aluminium alloy of the highly conductive high intensity of one kind according to claim 4, it is characterised in that: including following weight percent
The element of ratio:
Si:0.4-0.45%；Mg:0.5-0.55%；B:0.05-0.07%；Ti:0.007-0.015%；
Ce:0.1-0.2%；Er:0.05-0.15%；Fe:0.2-0.3%；Mn:0.007-0.011%；
Cr:0.008-0.01%；Zr:0.01-0.02%；Cu:0.01-0.03%；Zn:0.01-0.03%；Remaining is for aluminium and not
Evitable impurity.
6. the aluminium alloy of the highly conductive high intensity of one kind according to claim 4, it is characterised in that: by following weight percent
Element composition:
Si:0.4%；Mg:0.55%；B:0.06%；Ti:0.011%；Ce:0.15%；Er:
0.1%；Fe:0.25%；Mn:0.009%；Cr:0.009%；Zr:0.015%；Cu:0.02%；
Zn:0.02%；Remaining is aluminium and inevitable impurity.
7. the aluminium alloy of the highly conductive high intensity of one kind according to claim 4, it is characterised in that: described inevitably miscellaneous
Matter is not more than 0.1wt%, and every kind of element in inevitable impurity is not more than 0.03wt%.
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