CN117165817A - High-pressure casting aluminum alloy with high heat conductivity coefficient and capable of being brazed - Google Patents
High-pressure casting aluminum alloy with high heat conductivity coefficient and capable of being brazed Download PDFInfo
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- CN117165817A CN117165817A CN202311216296.6A CN202311216296A CN117165817A CN 117165817 A CN117165817 A CN 117165817A CN 202311216296 A CN202311216296 A CN 202311216296A CN 117165817 A CN117165817 A CN 117165817A
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 62
- 238000005266 casting Methods 0.000 title claims abstract description 54
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000005219 brazing Methods 0.000 claims abstract description 24
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052742 iron Inorganic materials 0.000 claims abstract description 17
- 239000011572 manganese Substances 0.000 claims abstract description 17
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 15
- 239000010703 silicon Substances 0.000 claims abstract description 14
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 14
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 13
- 239000010936 titanium Substances 0.000 claims abstract description 12
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 11
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052796 boron Inorganic materials 0.000 claims abstract description 10
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 9
- 239000011777 magnesium Substances 0.000 claims description 14
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 11
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 11
- 239000011651 chromium Substances 0.000 claims description 11
- 229910052749 magnesium Inorganic materials 0.000 claims description 11
- 229910052804 chromium Inorganic materials 0.000 claims description 9
- 238000002844 melting Methods 0.000 claims description 8
- 230000008018 melting Effects 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 239000011701 zinc Substances 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 6
- 229910052777 Praseodymium Inorganic materials 0.000 claims description 6
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 229910052750 molybdenum Inorganic materials 0.000 claims description 6
- 239000011733 molybdenum Substances 0.000 claims description 6
- PUDIUYLPXJFUGB-UHFFFAOYSA-N praseodymium atom Chemical compound [Pr] PUDIUYLPXJFUGB-UHFFFAOYSA-N 0.000 claims description 6
- 229910052725 zinc Inorganic materials 0.000 claims description 6
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 5
- 229910052684 Cerium Inorganic materials 0.000 claims description 4
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 claims description 4
- 150000002910 rare earth metals Chemical class 0.000 claims description 4
- 229910000765 intermetallic Inorganic materials 0.000 claims description 3
- 229910002467 CrFe Inorganic materials 0.000 claims 1
- 238000001816 cooling Methods 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 230000017525 heat dissipation Effects 0.000 abstract description 4
- 239000000956 alloy Substances 0.000 description 13
- 239000000463 material Substances 0.000 description 11
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 9
- 229910045601 alloy Inorganic materials 0.000 description 9
- 230000005496 eutectics Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000012071 phase Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000001953 recrystallisation Methods 0.000 description 4
- 229910018125 Al-Si Inorganic materials 0.000 description 3
- 229910018520 Al—Si Inorganic materials 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 229910007873 ZrAl3 Inorganic materials 0.000 description 2
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004512 die casting Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 229910018084 Al-Fe Inorganic materials 0.000 description 1
- 229910018131 Al-Mn Inorganic materials 0.000 description 1
- 229910018192 Al—Fe Inorganic materials 0.000 description 1
- 229910018461 Al—Mn Inorganic materials 0.000 description 1
- 229910018569 Al—Zn—Mg—Cu Inorganic materials 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910019018 Mg 2 Si Inorganic materials 0.000 description 1
- 229910000676 Si alloy Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 239000010407 anodic oxide Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000010587 phase diagram Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Landscapes
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
The high-pressure casting aluminum alloy with the high heat conductivity coefficient comprises the following element components in percentage by mass: up to 0.2% silicon; up to 1.5% iron; up to 0.85% manganese; 0.1 to 0.5 percent of zirconium; 0.05-0.2% boron; up to 0.15% titanium; up to 2% nickel; wherein the elements at least comprise two kinds, and the balance is Al. The brazing high-heat-conductivity high-pressure casting aluminum alloy has high heat conductivity, can improve the operation efficiency of a water cooling plate heat dissipation system, can reach the high-temperature brazing temperature, has good fluidity and low shrinkage, and can be applied to a high-pressure casting process to obtain the brazing high-heat-conductivity high-pressure casting aluminum alloy.
Description
Technical Field
The invention relates to the technical field of high-pressure casting aluminum alloy, in particular to a high-pressure casting aluminum alloy with a high heat conductivity coefficient, which can be brazed.
Background
The energy conservation amount of the new energy automobile is continuously increased, and based on the light weight consideration of the new energy automobile, the aluminum alloy with low density, good heat conduction performance and high strength is adopted, and the aluminum alloy is light and economical to replace steel or cast iron. The brazing process is a welding method for filling gaps of solid workpieces with liquid brazing filler metal to connect metals after the brazing filler metal with the welding parts with melting point lower than that of the welding parts are heated to the melting temperature of the brazing filler metal at the same time.
Besides the new energy automobile heat dissipation water cooling plate, many parts need high temperature brazing assembly, such as a liquid cooling plate in the communication field, but at present, the products are basically formed into a matrix after being processed or forged by adopting a section bar, and then are welded. However, the existing high-pressure casting aluminum alloy mainly has low melting point and cannot reach the high-temperature brazing temperature. Or has high melting point but poor casting fluidity and high shrinkage, and cannot be applied to the current high-pressure casting process. And because the application scene is mostly radiating parts, the higher heat conductivity coefficient is needed to improve the operation efficiency of the water cooling plate radiating system. There is no such product currently available on the market.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides the high-pressure casting aluminum alloy with high heat conductivity, which has higher heat conductivity and can improve the operation efficiency of a water cooling plate heat dissipation system.
The invention discloses a high-pressure casting aluminum alloy with high heat conductivity coefficient capable of brazing, which comprises the following element components in percentage by mass: up to 0.2% silicon; up to 1.5% iron; up to 0.85% manganese; 0.1 to 0.5 percent of zirconium; 0.05-0.2% boron; up to 0.15% titanium; up to 2% nickel; wherein the elements at least comprise two kinds, and the balance is Al.
The brazing high-heat-conductivity high-pressure casting aluminum alloy also comprises the following element components in percentage by mass: up to 0.3% copper; up to 0.3% zinc; up to 0.8% chromium; up to 0.9% magnesium; 5-15% of rare earth, preferably one or two of cerium and praseodymium; up to 0.5% molybdenum.
Preferably, the solderable high-heat-conductivity high-pressure casting aluminum alloy comprises the following element components in percentage by mass: up to 0.2% silicon; up to 1.0% iron; up to 0.3% copper; up to 0.3% zinc; up to 0.55% manganese; up to 0.1% chromium; up to 0.5% magnesium; 0.1 to 0.5 percent of zirconium; 0.05-0.2% boron; up to 0.15% titanium; up to 0.5% nickel; praseodymium 5-15%; up to 0.2% molybdenum; wherein the elements at least comprise four kinds, and the balance is Al.
Preferably, the solderable high-heat-conductivity high-pressure casting aluminum alloy comprises the following element components in percentage by mass: up to 0.2% silicon; up to 1.5% iron; up to 0.3% copper; up to 0.3% zinc; up to 0.85% manganese; up to 0.1% chromium; up to 0.9% magnesium; 0.1 to 0.2 percent of zirconium; 0.05-0.2% boron; up to 0.15% titanium; up to 0.8% nickel; 5-15% of cerium and praseodymium; up to 0.5% molybdenum; wherein the elements at least comprise four kinds, and the balance is Al.
Preferably, the solderable high-heat-conductivity high-pressure casting aluminum alloy comprises the following element components in percentage by mass:
up to 0.1% silicon; up to 0.5% iron; up to 0.1% manganese; 0.5 to 0.8 percent of zirconium; 0.05-0.2% boron; up to 0.15% titanium; up to 2% nickel; wherein the elements at least comprise three kinds, and the balance is Al.
The solderable high-heat-conductivity high-pressure casting aluminum alloy contains AlFeSi phase and Mg 2 Si phase, mnAl 6 Compound, (Fe, mn) Al 6 Inclusions, zrAl 3 Compound, (CrFe) Al 7 And (CrMn) Al 12 Intermetallic compounds.
The invention relates to a solderable high-heat conductivity high-pressure casting aluminum alloy, which has a tensile yield limit Rp0.2 of more than 100Mpa in an as-cast state; and the fracture elongation A is more than 5.0 percent, and the tensile strength Rm is more than 200MPa.
In particular, the solderable high thermal conductivity high pressure casting aluminum alloy has a thermal conductivity of > 140W/(m·k).
The melting point of the solderable high-heat-conductivity high-pressure casting aluminum alloy is more than or equal to 625 ℃.
The method for manufacturing the solderable high-heat-conductivity high-pressure casting aluminum alloy comprises the following steps of:
weighing raw materials according to elements of the high-pressure casting aluminum alloy with the high heat conductivity coefficient capable of being brazed, smelting, and casting under high pressure to obtain the high-pressure casting aluminum alloy with the high heat conductivity coefficient capable of being brazed.
The invention adds rare earth elements into the high-pressure casting aluminum alloy with high heat conductivity coefficient, which increases the supercooling of components, refines grains, reduces the secondary crystal spacing, reduces the gas and the inclusion in the alloy and leads the inclusion phase to tend to spheroidize when the aluminum alloy is cast. The surface tension of the melt can be reduced, the fluidity is increased, the casting into ingots is facilitated, and the casting process performance is obviously affected.
RE in the alloy is a main eutectic system element, can provide excellent casting performance, and ensures higher eutectic temperature and good high-temperature stability of the material. The eutectic temperature of the material is adjusted by blending different rare earth contents and proportions, and the strength/corrosion resistance/toughness of the material is comprehensively balanced, so that excellent comprehensive service performance and manufacturability are obtained.
Iron element Fe
The proportion of iron in the high-pressure casting aluminum alloy is 1.0-2.0 wt%, the eutectic point of iron in the aluminum alloy is 1.8%, the fluidity and demolding capability of the material are ensured by utilizing the eutectic, but the excessive iron content can lead to the reduction of heat conduction of the material, so the lower Fe content is preferable
Elemental silicon Si
In the conventional aluminum-silicon alloy, silicon mainly improves the flowability of the material, but the alloy mainly relies on Al-Fe eutectic, if excessive silicon is added, the solidus temperature of the material is reduced, the brazing is affected, the silicon and iron form an AlFeSi phase, the elongation of the material is reduced, electron movement is hindered, heat conduction is reduced, and the preferable silicon content is at most 0.2 wt%;
mn element Mn
The maximum solubility of manganese in solid solution at eutectic temperature 658 for the Al-Mn alloy system equilibrium phase diagram portion was 1.82%. The alloy strength is increased with the increase of solubility, and the elongation reaches the maximum value when the manganese content is 0.8 percent. The addition of Mn significantly reduces the electrical and thermal conductivity properties of the aluminum alloy. The Mn element can prevent the recrystallization process of the aluminum alloy, raise the recrystallization temperature and obviously refine the recrystallized grains. The refinement of the recrystallized grains is mainly realized by the inhibition of the growth of the recrystallized grains by MnAl6 compound dispersion particles. Another function of MnAl6 is to dissolve impurity iron to form (Fe, mn) Al6, reducing the detrimental effects of iron.
Zr element Zr
Zirconium is also a commonly used additive element for aluminum alloys to refine grain size. The addition amount of the ZrAl3 compound is generally 0.1-0.3% in the aluminum alloy, and zirconium and aluminum form the ZrAl3 compound, so that the recrystallization process can be hindered, and the recrystallized grains can be refined. Zirconium also refines the cast structure but is less effective than titanium. In the presence of zirconium, the effect of refining the grains of titanium and boron is reduced. In the Al-Zn-Mg-Cu alloy, zirconium is preferable to be used instead of chromium and manganese for refining the recrystallized structure because zirconium has a smaller influence on quenching sensitivity than chromium and manganese.
Chromium element Cr
Chromium has a solubility of 0.8% in aluminum at 600 c and is essentially insoluble at room temperature, thus significantly reducing the electrical/thermal conductivity properties of the aluminum alloy. Chromium forms intermetallic compounds such as (CrFe) Al7, (CrMn) Al12 and the like in aluminum, prevents nucleation and growth processes of recrystallization, has a certain strengthening effect on the alloy, and can improve the toughness of the alloy and reduce the sensitivity of stress corrosion cracking. But the quenching sensitivity is increased in the meeting place, so that the anodic oxide film is yellow.
Magnesium element Mg
The proportion of magnesium in the die-casting aluminum alloy is 0.3 to 1.0 weight percent, and the magnesium can enhance the strength and the hardness of the alloy because the magnesium is mainly added into the aluminum-silicon alloyBy Mg 2 The yield strength can be increased by 5-10 Mpa when 0.1% of magnesium is added to Si phase, the element is obvious for improving the strength of aluminum alloy, and the price and the aluminum difference are small.
The invention has the beneficial effects that:
the high-heat-conductivity high-pressure casting aluminum alloy part capable of being brazed can replace a machining engraving piece and a forging piece to realize precise molding, the utilization rate of an aluminum alloy material can be greatly improved, the production process cost is reduced, and the higher heat-conductivity coefficient can improve the operation efficiency of the water cooling plate heat dissipation system.
Drawings
FIG. 1 is a graph of temperature versus solid fraction of a solderable high thermal conductivity high pressure casting aluminum alloy prepared in example 1.
Fig. 2 is a graph of temperature versus thermal conductivity for a brazeable high thermal conductivity high pressure casting aluminum alloy prepared in example 1.
FIG. 3 is a graph showing the temperature versus solid fraction of a conventional Al-Si die-cast aluminum alloy material.
Fig. 4 is a graph of temperature versus thermal conductivity for a conventional Al-Si die cast aluminum alloy material.
Detailed Description
The present invention will be described in further detail with reference to examples.
Examples 1 to 3
The high pressure cast aluminum alloys of 3 examples were each produced by the above-described production process, and the properties thereof were examined, and the following table 1 is concrete.
TABLE 1
The temperature and solid phase fraction curve diagram of the prepared brazing high-heat-conductivity high-pressure casting aluminum alloy is shown in fig. 1, and the corresponding temperature and heat-conductivity curve diagram of the brazing high-heat-conductivity high-pressure casting aluminum alloy is shown in fig. 2, which shows that the brazing high-heat-conductivity high-pressure casting aluminum alloy has higher heat conductivity. If some of the alloying elements in this example are out of the specified range, the heat conduction characteristics of the material may be significantly reduced, for example, mn element of at most 0.55 is supposed to be increased to 0.9, and the heat conduction coefficient of the material is reduced to 102W/m.k through experiments, which cannot meet the design purpose of the present invention.
Examples 4 to 6
The above preparation process makes the aluminum alloys for high pressure casting of 3 examples, respectively, and the performance thereof was examined, and the following table 2 is specific.
TABLE 2
| Element(s) | Example 4 | Example 5 | Example 6 |
| Si | 0.13 | 0.15 | 0.12 |
| Fe | 1.1 | 1.2 | 1.3 |
| Cu | 0.15 | 0.2 | 0.2 |
| Zn | 0.25 | 0.25 | 0.28 |
| Zr | 0.1 | 0.15 | 0.2 |
| Mn | 0.25 | 0.55 | 0.85 |
| Cr | 0.08 | 0.09 | 0.1 |
| Mg | 0.41 | 0.43 | 0.8 |
| Ni | 0.4 | 0.5 | 0.75 |
| B | 0.05 | 0.05 | 0.18 |
| Ti | 0.01 | 0.01 | 0.13 |
| Ce+Pr | 5 | 10 | 14 |
| Mo | 0.15 | 0.15 | 0.18 |
| Tensile strength/MPa | 204 | 222 | 225 |
| Yield strength/MPa | 103 | 113 | 113 |
Examples 7 to 9
The high pressure cast aluminum alloys of 3 examples were each prepared by the above preparation process, and the properties thereof were examined, and the details are shown in table 3 below.
TABLE 3 Table 3
The invention is a brand new brazing aluminum alloy component with high heat conductivity coefficient and high pressure casting, can realize pressure casting production, has higher heat conductivity coefficient and solidus temperature higher than 625 ℃ and can be used for brazing. Can replace machining or forging forming, and has low cost and high production efficiency.
Compared with the conventional Al-Si die-casting aluminum alloy material, the (Al-SI of the bed cabinet) material has low melting point, can not be welded and has low heat conductivity coefficient, as shown in fig. 3 and 4.
The novel high-pressure casting with high heat conductivity coefficient has higher heat conductivity coefficient and melting point as high as 625 ℃, and can use a high-temperature brazing process.
Claims (9)
1. The high-pressure casting aluminum alloy with the high heat conductivity is characterized by comprising the following element components in percentage by mass: up to 0.2% silicon; up to 1.5% iron; up to 0.85% manganese; 0.1 to 0.5 percent of zirconium; 0.05-0.2% boron; up to 0.15% titanium; up to 2% nickel; wherein the elements at least comprise two kinds, and the balance is Al.
2. The high-pressure casting aluminum alloy with high heat conductivity capable of brazing according to claim 1, wherein the high-pressure casting aluminum alloy with high heat conductivity capable of brazing further comprises the following element components in percentage by mass: up to 0.3% copper; up to 0.3% zinc; up to 0.8% chromium; up to 0.9% magnesium; 5-15% of rare earth, wherein the rare earth is one or two of cerium and praseodymium; up to 0.5% molybdenum.
3. The high-pressure casting aluminum alloy with the high heat conductivity is characterized by comprising the following element components in percentage by mass: up to 0.2% silicon; up to 1.0% iron; up to 0.3% copper; up to 0.3% zinc; up to 0.55% manganese; up to 0.1% chromium; up to 0.5% magnesium; 0.1 to 0.5 percent of zirconium; 0.05-0.2% boron; up to 0.15% titanium; up to 0.5% nickel; praseodymium 5-15%; up to 0.2% molybdenum; wherein the elements at least comprise four kinds, and the balance is Al.
4. The high-pressure casting aluminum alloy with the high heat conductivity is characterized by comprising the following element components in percentage by mass: up to 0.2% silicon; up to 1.5% iron; up to 0.3% copper; up to 0.3% zinc; up to 0.85% manganese; up to 0.1% chromium; up to 0.9% magnesium; 0.1 to 0.2 percent of zirconium; 0.05-0.2% boron; up to 0.15% titanium; up to 0.8% nickel; 5-15% of cerium and praseodymium; up to 0.5% molybdenum; wherein the elements at least comprise four kinds, and the balance is Al.
5. The high-pressure casting aluminum alloy with the high heat conductivity is characterized by comprising the following element components in percentage by mass:
up to 0.1% silicon; up to 0.5% iron; up to 0.1% manganese; 0.5 to 0.8 percent of zirconium; 0.05-0.2% boron; up to 0.15% titanium; up to 2% nickel; wherein the elements at least comprise three kinds, and the balance is Al.
6. The high thermal conductivity, high pressure casting aluminum alloy capable of brazing according to any one of claims 1 to 5, wherein said high thermal conductivity, high pressure casting aluminum alloy capable of brazing comprises AlFeSi phase, mg 2 Si phase, mnAl 6 Compound, (Fe, mn) Al 6 Inclusions, zrAl 3 Compound, (CrFe) Al 7 And (CrMn) Al 12 Intermetallic compounds.
7. The solderable high thermal conductivity high pressure casting aluminum alloy according to any one of claims 1 to 5, wherein said solderable high thermal conductivity high pressure casting aluminum alloy has a tensile yield limit rp0.2>100Mpa in as-cast state; and the fracture elongation A is more than 5.0 percent, and the tensile strength Rm is more than 200MPa.
8. The solderable high thermal conductivity high pressure casting aluminum alloy according to any one of claims 1 to 5, wherein the thermal conductivity of the solderable high thermal conductivity high pressure casting aluminum alloy is > 140W/(m-k).
9. The high thermal conductivity, high pressure casting aluminum alloy capable of brazing according to any one of claims 1 to 5, wherein the melting point of the high thermal conductivity, high pressure casting aluminum alloy capable of brazing is equal to or higher than 625 ℃.
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| WO2022193487A1 (en) * | 2021-03-15 | 2022-09-22 | 上海交通大学 | High-strength and toughness, heat-resistant aluminum alloy armature material and preparation method therefor |
| CN116377289A (en) * | 2023-04-10 | 2023-07-04 | 帅翼驰新材料集团有限公司 | High pressure cast aluminum alloy suitable for brazing |
| CN116377288A (en) * | 2023-04-10 | 2023-07-04 | 帅翼驰新材料集团有限公司 | High pressure casting aluminum alloy for brazing |
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2023
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| WO2022193487A1 (en) * | 2021-03-15 | 2022-09-22 | 上海交通大学 | High-strength and toughness, heat-resistant aluminum alloy armature material and preparation method therefor |
| CN116377289A (en) * | 2023-04-10 | 2023-07-04 | 帅翼驰新材料集团有限公司 | High pressure cast aluminum alloy suitable for brazing |
| CN116377288A (en) * | 2023-04-10 | 2023-07-04 | 帅翼驰新材料集团有限公司 | High pressure casting aluminum alloy for brazing |
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