High-performance aluminum alloy and preparation method thereof
Through a multi-step high-performance aluminum alloy preparation method, including multiple refining, deterioration and refinement treatment, the existing aluminum alloy has been solved, and the preparation of high-performance aluminum alloys is realized to meet the needs of the aviation and aerospace fields.
Patent Information
- Application Number
- CN202411666389.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-20
- Publication Date
- 2025-03-07
AI Technical Summary
The tensile strength and elongation of the aluminum alloy prepared by the existing aluminum alloy preparation methods are relatively low and cannot meet the requirements of the aviation and aerospace fields.
Through a high-performance aluminum alloy preparation method, it includes adding pure aluminum and pure silicon to the crucible, heating and producing a melt, adding AlTi5A and AlY10, adding pure magnesium and AlBe3 after the first refining treatment, adding AlSb10 after the deterioration treatment, performing the second refining and refining treatment, and finally pouring the alloy liquid into the casting mold to produce a high-performance aluminum alloy.
The tensile strength and elongation of aluminum alloy are improved, and the performance requirements in the aviation and aerospace fields are met. The mechanical properties of aluminum alloy are significantly improved through refinement and deterioration treatment.
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Figure CN119571108A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of aluminum alloy preparation, and in particular to a high-performance aluminum alloy and a preparation method thereof. Background Art
[0002] As domestic and foreign aviation and aerospace structural parts develop towards large, complex and high-strength, the application of high-performance and high-quality cast aluminum alloys is increasing, and higher requirements are put forward for the comprehensive performance of cast aluminum alloys, requiring both high mechanical properties and excellent casting properties. Cast aluminum alloys have excellent casting properties, good corrosion resistance and ductility, high specific strength and specific stiffness, and are widely used in the fields of automobiles, aerospace, etc. With the rapid development of science and technology, aviation and aerospace products have higher and higher requirements for the performance of cast aluminum alloys.
[0003] However, the tensile strength and elongation of aluminum alloys prepared by current aluminum alloy preparation methods are relatively low and cannot meet the requirements of the aviation and aerospace fields. Summary of the invention
[0004] The embodiments of the present application provide a high-performance aluminum alloy and a preparation method thereof, so as to solve the problem of low tensile strength and elongation of aluminum alloys prepared by current aluminum alloy preparation methods in the prior art.
[0005] In a first aspect, the present application provides a method for preparing a high-performance aluminum alloy, comprising:
[0006] Adding pure aluminum and pure silicon into a crucible, heating and preparing a melt;
[0007] The molten metal is heated to 730° C.-740° C., and AlTi5A and AlY10 are added to the molten metal to obtain a first alloy liquid;
[0008] Performing a first refining treatment on the first alloy liquid, and after the first refining treatment is completed, adding pure magnesium and AlBe3 to the first alloy liquid to obtain a second alloy liquid;
[0009] Performing a modification treatment on the second alloy liquid, and adding AlSb10 to the second alloy liquid after the modification treatment to obtain a third alloy liquid;
[0010] Performing a second refining treatment on the third alloy liquid, and performing a refinement treatment on the third alloy liquid during the second refining treatment, and obtaining a fourth alloy liquid after the second refining is completed;
[0011] The fourth alloy liquid is poured into a casting mold to obtain a high-performance aluminum alloy.
[0012] In a feasible implementation, the step of adding pure aluminum and pure silicon into a crucible, heating and preparing a melt comprises:
[0013] Add pure aluminum and pure silicon sequentially into the preheated crucible and heat to 700°C-720°C.
[0014] In a feasible implementation, pure aluminum and pure silicon are sequentially added into a preheated crucible and heated to 700° C.-720° C. After the pure aluminum and the pure silicon are melted, they are stirred for 3 min.-10 min. Thus, a melt is obtained.
[0015] In a feasible implementation, the first refining process includes:
[0016] The first alloy liquid is subjected to gas refining by using a refining and degassing machine, wherein the gas is argon.
[0017] In a feasible implementation, the temperature range of the first refining treatment is 720° C.-730° C.;
[0018] And / or, the first refining treatment takes 10 min to 40 min.
[0019] In a feasible implementation, after the first refining treatment is completed, the first alloy liquid is cooled to 710°C-720°C, and then pure magnesium and AlBe3 are added to the first alloy liquid and stirred for 3min-10min to obtain the second alloy liquid.
[0020] In a feasible implementation, the second alloy liquid is heated to 720° C.-730° C., and then AlSb10 is added to the second alloy liquid.
[0021] In a feasible implementation, the second refining process includes:
[0022] The third alloy liquid is subjected to gas refining by a refining degasser, wherein the gas is argon gas, and a refining agent is added along with the vortex of the third alloy liquid, and the vortex is stirred for 3 minutes to 10 minutes;
[0023] And / or, the second refining treatment takes 10 min to 40 min.
[0024] In a feasible implementation, the refinement process includes:
[0025] In the range of 720°C-730°C, Al-TCB is added to the third alloy liquid.
[0026] In the second aspect, the embodiment of the present application also provides a high-performance aluminum alloy, which is prepared using the high-performance aluminum alloy preparation method as described in the first aspect. In terms of component weight percentage, the high-performance aluminum alloy includes 4% to 13% silicon, 0.2% to 1.5% magnesium, 0.05% to 0.5% titanium, 0.03% to 0.1% beryllium and 0.05% to 0.1% Y.
[0027] In a first aspect, an embodiment of the present application provides a method for preparing a high-performance aluminum alloy, comprising adding pure aluminum and pure silicon into a crucible, heating and obtaining a melt; heating the melt to 730°C-740°C, adding AlTi5A and AlY10 to the melt to obtain a first alloy liquid; performing a first refining treatment on the first alloy liquid, and after the first refining treatment is completed, adding pure magnesium and AlBe3 to the first alloy liquid to obtain a second alloy liquid; performing a metamorphic treatment on the second alloy liquid, and after the treatment, adding AlSb10 to the second alloy liquid to obtain a third alloy liquid; performing a second refining treatment on the third alloy liquid, and refining the third alloy liquid during the second refining treatment, and obtaining a fourth alloy liquid after the second refining is completed; pouring the fourth alloy liquid into a casting mold to obtain a high-performance aluminum alloy. Among them, AlBe3 is added during the preparation of high-performance high-quality aluminum alloys to prevent alloy oxidation and reduce the burning loss of Mg elements. At the same time, Be forms A15BeSi fine spheres with Fe in the aluminum alloy to avoid the impurity Fe from producing brittle needle-like structures and eliminate the harmful effects of iron. In addition, AlY10 can play a refining role, and the Y element can promote the fineness of coarse α-Al matrix grains and improve the mechanical properties of the aluminum alloy.
[0028] The first refining is carried out after the main alloying elements are added to ensure the degassing and impurity removal of the melt after the main elements are melted. The second refining is carried out after all the alloying elements are added and modified. Eddy current refining agent is added during the second refining process to ensure that the excess gas and inclusions in the final melt are completely removed. At the same time, the eddy current refining agent is a refining agent based on Ti and B. Ti and B elements can refine the grain structure and improve the mechanical properties of aluminum alloys.
[0029] During the modification treatment of the high-performance aluminum alloy, aluminum-antimony alloy AlSb10 is used. After Sb modification, the eutectic Si of the alloy obviously changes from needle-shaped to granular, and the α-Al matrix grains change from coarse to fine, with a more uniform distribution. Moreover, the high-quality effect after Sb modification can be maintained for a long time, up to 100 hours, thereby significantly improving the mechanical properties of the aluminum alloy.
[0030] Finally, two static treatments were performed during the preparation of the high-performance aluminum alloy. The first static treatment was after the addition of materials, the first refining treatment and the modification treatment, which could ensure that the melt obtained good homogenization, purification and refinement effects, and the second static treatment was after the second refining treatment and refinement treatment, which could ensure that the melt was completely homogenized, purified and refined.
[0031] In the second aspect, the embodiment of the present application also provides a high-performance aluminum alloy, which includes 4% to 13% silicon, 0.2% to 1.5% magnesium, 0.05% to 0.5% titanium, 0.03% to 0.1% beryllium and 0.05% to 0.1% Y in terms of weight percentage of the components. It is prepared using the high-performance aluminum alloy preparation method as described in the first aspect, and thus has all the beneficial effects of the technical solution of the high-performance aluminum alloy preparation method described in the first aspect, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS
[0032] The drawings described herein are used to provide further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present application and do not constitute improper limitations on the present invention.
[0033] In the attached picture:
[0034] Figure 1 This is a flow chart of the preparation of high-performance aluminum alloy provided in one embodiment of the present application. DETAILED DESCRIPTION
[0035] In order to enable those skilled in the art to better understand the technical solutions in this application, the following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this application.
[0036] In the description of the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.
[0037] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0038] As domestic and foreign aviation and aerospace structural parts develop towards large, complex and high-strength, the application of high-performance and high-quality cast aluminum alloys is increasing, and higher requirements are put forward for the comprehensive performance of cast aluminum alloys, requiring both high mechanical properties and excellent casting properties. Cast aluminum alloys have excellent casting properties, good corrosion resistance and ductility, high specific strength and specific stiffness, and are widely used in the fields of automobiles, aerospace, etc. With the rapid development of science and technology, aviation and aerospace products have higher and higher requirements for the performance of cast aluminum alloys.
[0039] However, the tensile strength and elongation of aluminum alloys prepared by current aluminum alloy preparation methods are relatively low and cannot meet the requirements of the aviation and aerospace fields.
[0040] In order to solve the above problems, the embodiments of the present application provide a high-performance aluminum alloy and a method for preparing the same. The solutions provided in the embodiments of the present application will be described below in conjunction with the accompanying drawings of the specification.
[0041] Figure 1 This is a flow chart of the preparation of high-performance aluminum alloy provided in one embodiment of the present application.
[0042] Reference Figure 1 As shown, in the first aspect, the embodiment of the present application provides a method for preparing a high-performance aluminum alloy, comprising:
[0043] S100: adding pure aluminum and pure silicon into a crucible, heating and preparing a melt, heating the melt to 730° C.-740° C., adding AlTi5A and AlY10 into the melt, and preparing a first alloy liquid.
[0044] Exemplarily, pure aluminum and pure silicon are sequentially added to a preheated crucible and heated to 700°C-720°C. After the pure aluminum and pure silicon are melted, they are stirred for 3min-10min to obtain a melt. It should be noted that AlTi5A is an aluminum alloy master alloy, mainly used as an additive for aluminum alloys. This master alloy contains 4.0-6.0% titanium (Ti), and the remaining main component is aluminum. AlY10 is an aluminum alloy material, usually used as a master alloy. This material contains a high proportion of the element yttrium, with a content of about 10%.
[0045] S200: performing a first refining treatment on the first alloy liquid, and after the first refining treatment is completed, adding pure magnesium and AlBe3 to the first alloy liquid to obtain a second alloy liquid.
[0046] Exemplarily, the first refining treatment includes: using a refining degasser to perform gas refining on the first alloy liquid, the gas is argon gas, the temperature range of the first refining treatment is 720° C.-730° C., and the time of the first refining treatment is 10 min-40 min.
[0047] After the first refining treatment is completed, the first alloy liquid is cooled to 710°C-720°C, and then pure magnesium and AlBe3 are added to the first alloy liquid and stirred for 3min-10min to obtain the second alloy liquid. Among them, AlBe3 refers to aluminum beryllium alloy, also known as aluminum beryllium (Al-Be) alloy.
[0048] S300: performing a modification treatment on the second alloy liquid, and adding AlSb10 to the second alloy liquid after the modification treatment to obtain a third alloy liquid.
[0049] In some examples, after the second alloy liquid is subjected to the modification treatment, the second alloy liquid is heated to 720° C.-730° C., and then AlSb10 is added to the second alloy liquid.
[0050] It should be noted that AlSb10 is an aluminum master alloy, which includes 9.0%-11.0% Sb. It is mainly used to optimize the morphology and distribution of primary silicon and eutectic silicon in aluminum silicon alloy, refine the grain structure, and improve the mechanical properties. It can improve the fluidity and casting properties of aluminum silicon alloy, has a lasting modification effect, and the remelting modification effect can be inherited.
[0051] S400: performing a second refining treatment on the third alloy liquid, and performing a refinement treatment on the third alloy liquid during the second refining treatment, and obtaining a fourth alloy liquid after the second refining is completed.
[0052] Exemplarily, the second refining treatment includes: using a refining degasser to perform gas refining on the third alloy liquid, the gas is argon, and a refining agent is added along with the vortex of the third alloy liquid, and the vortex stirring is performed for 3 minutes to 10 minutes. And / or, the second refining treatment time is 10 minutes to 40 minutes.
[0053] Exemplarily, the refinement treatment includes: adding Al-TCB to the third alloy liquid in the range of 720°C-730°C.
[0054] Al-TCB is a new type of grain refiner for aluminum alloys. The Al-TCB seed alloy contains a large number of fine and uniformly dispersed TCB complexes, which are composed of B-doped TiC (B-TiC) and C-doped TiB2 (C-TiB2). In aluminum melt, especially aluminum silicon melt, B-TiC in the TCB complex will evolve into Al4C3, releasing Ti atoms that assist in refining α-Al and increasing the number density of C-TiB2, the nucleation substrate. The refining effect of Al-TCB seed alloy in aluminum melt is very significant, and it can refine the grain size of aluminum alloy from millimeter level to tens of microns. For example, after adding 1% Al-TCB seed alloy to ZL302 aluminum alloy, the grain size can be refined from millimeter level to 67.5μm, and the grain morphology is transformed from dendrite to equiaxed crystal. This grain refining effect can significantly improve the mechanical properties of aluminum alloys, such as tensile strength and elongation.
[0055] S500: pouring the fourth alloy liquid into a casting mold to obtain a high-performance aluminum alloy.
[0056] For example, in the present application, the pouring temperature of the fourth alloy liquid is 660° C. to 680° C. The alloy poured within this temperature range can solidify rapidly, which is beneficial to the refinement of the α-Al matrix grains in the alloy and the transformation of the eutectic Si from needle-shaped to granular, thereby improving the mechanical properties of the alloy.
[0057] In the present application, pure aluminum (Al99.996), pure silicon (Si1101), pure magnesium (Mg9998), AlTi5A, AlBe3, AlY10, etc. are all high-purity materials with extremely low impurity Fe content. Fe is regarded as the main harmful impurity in aluminum alloys. It is easy to form harmful phases such as Al3Fe, A12Fe3Si, Al9Fe2Si2 with elements such as Al and Si, which are often needle-shaped or dendritic, greatly reducing the strength and elongation of aluminum alloys. Therefore, the use of high-purity materials can obtain high-quality cast aluminum alloys with extremely low content of Fe and other impurity elements, thereby improving the mechanical properties of the cast aluminum alloys.
[0058] Among them, AlBe3 is added during the preparation of high-performance high-quality aluminum alloys to prevent alloy oxidation and reduce the burning loss of Mg elements. At the same time, Be forms A15BeSi fine spheres with Fe in the aluminum alloy to avoid the impurity Fe from producing brittle needle-like structures and eliminate the harmful effects of iron. The specifications of AlBe3 are φ8mm~φ25mm in diameter and 50mm~1000mm in length. This screw shape can promote the rapid dissolution of AlBe3, which is conducive to the rapid absorption and function of Be elements.
[0059] In addition, AlY10 can play a refining role, and the Y element can promote the coarse α-Al matrix grains to become fine, thereby improving the mechanical properties of the aluminum alloy. The AlY10 specification is φ8mm~φ25mm in diameter and 50mm~1000mm in length. This screw shape can promote the rapid dissolution of AlY10, which is conducive to the rapid absorption and function of the Y element.
[0060] The first refining is carried out after the main alloying elements are added to ensure the degassing and impurity removal of the melt after the main elements are melted. The second refining is carried out after all the alloying elements are added and modified. Eddy current refining agent is added during the second refining process to ensure that the excess gas and inclusions in the final melt are completely removed. At the same time, the eddy current refining agent is a refining agent based on Ti and B. Ti and B elements can refine the grain structure and improve the mechanical properties of aluminum alloys.
[0061] During the modification of the high-performance aluminum alloy, the aluminum-antimony alloy AlSb10 is used. After the Sb is modified, the eutectic Si is obviously changed from needle-shaped to granular, and the α-Al matrix grains are changed from coarse to fine, and the distribution is more uniform. The high-quality effect of the Sb modification can be maintained for a long time, up to 100 hours, thereby significantly improving the mechanical properties of the aluminum alloy. The AlSb10 specification is φ8mm to φ25mm in diameter and 50mm to 1000mm in length. This screw shape can promote the rapid dissolution of AlSb10, which is conducive to the rapid absorption and function of the Sb element.
[0062] The Ti and B elements in Al-TCB can refine the α-Al matrix grains and improve the mechanical properties of the alloy such as strength and toughness. When Al-TCB and AlSb10 are used together, there is no "poisoning" reaction between the two. The Al-TCB specification is φ9mm~φ10mm in diameter. This screw shape can promote the rapid dissolution of Al-TCB, which is conducive to the rapid absorption and function of the Ti and B elements in it.
[0063] Finally, two static treatments were performed during the preparation of the high-performance aluminum alloy. The first static treatment was after the addition of materials, the first refining treatment and the modification treatment, which could ensure that the melt obtained good homogenization, purification and refinement effects, and the second static treatment was after the second refining treatment and refinement treatment, which could ensure that the melt was completely homogenized, purified and refined.
[0064] The present invention provides a high-performance cast aluminum alloy, comprising the following components in weight ratio:
[0065] 4 to 13 parts of Si;
[0066] Specifically, adding Si to the alloy has the effect of improving the tensile strength and yield strength. For example, the weight ratio of Si is 4 parts, 4.2 parts, 5.45 parts, 5.75 parts, 6.95 parts, 7.14 parts, 7.25 parts, 8.32 parts, 8.35 parts, 9.45 parts, 9.5 parts, 10.55 parts, 11.63 parts, 11.75 parts, 12.8 parts or 13 parts;
[0067] 0.2-1.5 parts of Mg;
[0068] Specifically, adding Mg to the alloy has the effect of improving the tensile strength and yield strength. For example, the weight ratio of Mg is 0.2 parts, 0.21 parts, 0.33 parts, 0.44 parts, 0.48 parts, 0.51 parts, 0.55 parts, 0.69 parts, 0.72 parts, 0.86 parts, 0.98 parts, 1.17 parts, 1.22 parts, 1.35 parts, 1.48 parts or 1.5 parts;
[0069] 0.05%~0.5%Ti;
[0070] Specifically, Ti can form Al3Ti with Al in the alloy as a nucleation core, refine the alloy structure, and improve the tensile strength and elongation. For example, the weight ratio of Ti is 0.05, 0.06, 0.08, 0.09, 0.1, 0.11, 0.14, 0.25, 0.27, 0.29, 0.3, 0.31, 0.32, 0.43, 0.44, 0.47, 0.49 or 0.5;
[0071] 0.03%~0.1%Be;
[0072] Specifically, Be in the alloy can effectively prevent alloy oxidation, reduce the burning loss of Mg element, eliminate the harmful effect of iron, and improve the tensile strength, yield strength and elongation. For example, the weight ratio of Be is 0.03, 0.032, 0.033, 0.036, 0.039, 0.041, 0.044, 0.052, 0.057, 0.063, 0.066, 0.071, 0.076, 0.083, 0.086, 0.09, 0.095 or 0.1;
[0073] 0.05%~0.1%Y;
[0074] Specifically, Y in the alloy can promote the refinement of coarse α-Al matrix grains, improve tensile strength, yield strength and elongation, for example, the weight ratio of Y is 0.05, 0.052, 0.053, 0.056, 0.059, 0.061, 0.064, 0.065, 0.067, 0.073, 0.075, 0.078, 0.081, 0.084, 0.087, 0.09, 0.096 or 0.1;
[0075] Example 1
[0076] The weight ratio of each component of the high performance cast aluminum alloy is 4.9 parts of Si, 0.29 parts of Mg, 0.19 parts of Ti, 0.05 parts of Be, 0.08 parts of Y, and the rest are Al and some inevitable impurity elements.
[0077] The alloy with the above component proportions is prepared according to the preparation method described above to obtain a high-performance and high-quality cast aluminum alloy.
[0078] The room temperature tensile strength of the alloy after heat treatment is 368 MPa, the yield strength is 316 MPa, and the elongation is 10.5%.
[0079] Example 2
[0080] The weight ratio of each component of the high performance cast aluminum alloy is 9.3 parts of Si, 1.03 parts of Mg, 0.32 parts of Ti, 0.06 parts of Be, 0.1 parts of Y, and the rest are Al and some inevitable impurity elements.
[0081] The alloy with the above component proportions is prepared according to the preparation method described above to obtain a high-performance and high-quality cast aluminum alloy.
[0082] The room temperature tensile strength of the alloy after heat treatment is 365 MPa, the yield strength is 309 MPa, and the elongation is 11%.
[0083] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application to obtain other embodiments based on the several embodiments provided in the present application, and these embodiments do not exceed the protection scope of the present application.
[0084] The above specific implementation methods further explain in detail the purpose, technical solutions and beneficial effects of the embodiments of the present application. It should be understood that the above are only specific implementation methods of the embodiments of the present application and are not used to limit the protection scope of the embodiments of the present application. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application should be included in the protection scope of the embodiments of the present application.
Claims
1. A method for preparing a high-performance aluminum alloy, characterized in that: include: Adding pure aluminum and pure silicon into a crucible, heating and preparing a melt; The molten metal is heated to 730° C.-740° C., and AlTi5A and AlY10 are added to the molten metal to obtain a first alloy liquid; Performing a first refining treatment on the first alloy liquid, and after the first refining treatment is completed, adding pure magnesium and AlBe3 to the first alloy liquid to obtain a second alloy liquid; Performing a modification treatment on the second alloy liquid, adding AlSb10 to the second alloy liquid after the modification to obtain a third alloy liquid, and then allowing the third alloy liquid to stand; The third alloy liquid is subjected to a second refining treatment, and the third alloy liquid is subjected to a refinement treatment during the second refining treatment, and a fourth alloy liquid is obtained after the second refining is completed, and then allowed to stand; The fourth alloy liquid is poured into a casting mold after being allowed to stand to obtain a high-performance aluminum alloy.
2. The method for preparing a high performance aluminum alloy according to claim 1, characterized in that: The method of adding pure aluminum and pure silicon into a crucible, heating and preparing a melt comprises: Add pure aluminum and pure silicon sequentially into the preheated crucible and heat to 700°C-720°C.
3. The method for preparing a high performance aluminum alloy according to claim 2, characterized in that: Add pure aluminum and pure silicon into the preheated crucible in sequence, and heat to 700° C.-720° C. After the pure aluminum and the pure silicon are melted, stir for 3 min.-10 min. to obtain a melt.
4. The method for preparing a high performance aluminum alloy according to claim 1, characterized in that: The first refining process comprises: The first alloy liquid is subjected to gas refining by using a refining and degassing machine, wherein the gas is argon.
5. The method for preparing a high performance aluminum alloy according to claim 4, characterized in that: The temperature range of the first refining treatment is 720°C-730°C; And / or, the first refining treatment takes 10 min to 40 min.
6. The method for preparing a high performance aluminum alloy according to claim 1, characterized in that: After the first refining treatment is completed, the first alloy liquid is cooled to 710° C.-720° C., and then pure magnesium and AlBe3 are added to the first alloy liquid and stirred for 3 min-10 min to obtain the second alloy liquid.
7. The method for preparing a high performance aluminum alloy according to claim 1, characterized in that: The second alloy liquid is heated to 720° C.-730° C., and then AlSb10 is added to the second alloy liquid.
8. The method for preparing a high performance aluminum alloy according to claim 1, characterized in that: The second refining process comprises: The third alloy liquid is subjected to gas refining by a refining degasser, wherein the gas is argon gas, and a refining agent is added along with the vortex of the third alloy liquid, and the vortex is stirred for 3 minutes to 10 minutes; And / or, the second refining treatment takes 10 min to 40 min.
9. The method for preparing a high performance aluminum alloy according to claim 1, characterized in that: The refinement process comprises: In the range of 720°C-730°C, Al-TCB is added to the third alloy liquid.
10. A high performance aluminum alloy, characterized in that: The high-performance aluminum alloy is prepared using the high-performance aluminum alloy preparation method as described in any one of claims 1 to 9. According to the weight percentage of the components, the high-performance aluminum alloy includes 4% to 13% silicon, 0.2% to 1.5% magnesium, 0.05% to 0.5% titanium, 0.03% to 0.1% beryllium and 0.05% to 0.1% Y.