A method for preparing reinforced aluminum alloy materials

Abstract

This invention provides a method for preparing an enhanced aluminum alloy material, comprising the following steps: S1. Weighing the following components according to the following weight ratios: silicon 0.12-0.15%, iron 0.14-0.18%, copper 0.03-0.08%, manganese 0.01-0.04%, magnesium 0.01-0.03%, zinc 0.02-0.05%, vanadium 0.02-0.05%, with the balance being aluminum; heating the above components to a melt to obtain molten aluminum; S2. Preforming TiC-modified alumina into preforms, preheating them at 280-320°C, and then placing them into a mold at 280-320°C; S3. The molten aluminum prepared in step S1 is poured into a mold at 720-760°C. The volume fraction of the preform is 3-13%. Pressure is applied at 80-150 MPa to allow the molten aluminum to penetrate into the preform. Solidification occurs under pressure, held for 15-20 seconds. After solidification, the casting undergoes solution treatment and aging to obtain a reinforced aluminum alloy material. This invention uses a specific template to prepare the reinforcing filler into a ceramic material of a specific shape. This ceramic material is then used as the reinforcing filler for the aluminum matrix, resulting in an aluminum-based nanocomposite material with excellent comprehensive mechanical properties.

Description

Technical Field

[0001] This invention relates to the field of polymer material preparation, specifically to an enhanced ABS conductive resin and its preparation method. Background Technology

[0002] Compared with traditional aluminum alloys, aluminum-based composite materials possess superior comprehensive properties, such as high specific strength, good wear resistance, high electrical conductivity, and low coefficient of thermal expansion, thus showing great promise for applications. Currently, aluminum-silicon and aluminum-copper alloys are widely used due to their respective advantages, but their significant drawbacks have hindered their application and development in modern industry.

[0003] Continuous fiber reinforced metal matrix composites were a major focus of early research, but their development was limited by the high cost of continuous fiber preparation, interfacial issues, and difficulties in composite material preparation and molding. Compared to continuous fiber reinforced metal matrix composites, particulate reinforced metal matrix composites, especially particulate reinforced aluminum matrix composites, have advantages such as lower production costs and simpler preparation processes.

[0004] The research and development of particle-reinforced aluminum matrix composites has progressed from the stage of large-particle doping to the current stage of nanoparticle doping. Due to continuous improvements in processes, particularly the application of ultrasonic dispersion technology in aluminum alloy smelting, research on aluminum-based nanocomposites has achieved certain scientific results in both hydrometallurgical and pyrometallurgical processes. However, the lack of standardized criteria for particle-reinforced aluminum matrix composites, as well as the incompleteness of microscopic composite and interface theories, has limited the research and application of these materials.

[0005] With the development of metal matrix composites, ceramic materials have been introduced into metals to improve their strength. However, unfortunately, the large particle size of ceramic micron particles affects the plasticity and machinability of composite materials to some extent. The significant differences in physicochemical properties between the ceramic reinforcing phase and the aluminum alloy matrix pose challenges to the preparation and research of aluminum matrix composites. Therefore, developing or improving the preparation technology of aluminum matrix nanocomposites to produce aluminum matrix nanocomposites with excellent comprehensive mechanical properties is a key research focus at present. Summary of the Invention

[0006] The technical problem to be solved: The purpose of this invention is to provide a method for preparing reinforced aluminum alloy materials. A specific template is used to prepare the reinforcing filler into a ceramic material of a specific shape. The ceramic material is used as the reinforcing filler for reinforcing the aluminum matrix to prepare an aluminum-based nanocomposite material with excellent comprehensive mechanical properties.

[0007] Technical solution: A method for preparing reinforced aluminum alloy materials, comprising the following steps:

[0008] S1. Weigh the following components according to the following weight ratios: silicon 0.12-0.15%, iron 0.14-0.18%, copper 0.03-0.08%, manganese 0.01-0.04%, magnesium 0.01-0.03%, zinc 0.02-0.05%, vanadium 0.02-0.05%, with the balance being aluminum. Heat the above components until they melt to obtain molten aluminum.

[0009] S2. The TiC-modified alumina is made into preforms, preheated at 280-320℃, and then placed into a mold at 280-320℃;

[0010] S3. Pour the molten aluminum prepared in step S1 into a mold at 720-760℃. The volume fraction of the preform is 3-13%. Pressurize it with 80-150MPa so that the molten aluminum can penetrate into the preform. Solidify under pressure and hold for 15-20 seconds. After the casting has solidified, perform solution treatment and aging treatment to obtain reinforced aluminum alloy material.

[0011] Preferably, the method for preparing the TiC-modified alumina is as follows:

[0012] S11. Add aluminum isopropoxide to hot water, stir to fully hydrolyze the aluminum isopropoxide, then add nitric acid dropwise to continue the reaction and obtain aluminum oxide sol;

[0013] S12. After washing and drying the feathers, soak them to allow the sol to adhere to the surface of the feathers. After soaking, centrifuge the feathers to remove excess sol from the surface. Then dry the feathers coated with sol to gel the sol. Repeat the soaking, centrifugation and drying steps 1-3 times. Finally, disperse the sample and perform heat treatment to obtain feather-shaped alumina.

[0014] S13. Add tetrabutyl titanate to an ethanol solution and stir until the tetrabutyl titanate is fully hydrolyzed. Then add graphite powder, stir, filter, dry, and grind into a mixed powder.

[0015] S14. The mixed powder prepared in step S3 is spread on the feather-shaped alumina prepared in step S2 and subjected to laser in-situ reaction under an argon atmosphere to obtain TiC modified alumina.

[0016] Preferably, in step S11, the molar ratio of aluminum isopropoxide, water, and nitric acid is 1:100:1.

[0017] Preferably, in step S12, the feathers are three-dimensional spherical down clusters with an average diameter of 1-2 cm, and the heat treatment involves a heating rate of approximately 2-4 °C / min and holding at 350-400 °C and 600-680 °C for 5-9 hours respectively.

[0018] Preferably, the ratio of tetrabutyl titanate to graphite powder in step S13 is 4-6:1 mL / g.

[0019] Preferably, the laser parameters in step S14 are: laser power 1500-2000W, scanning speed 200-240mm / min, and spot diameter 2.5-3.5mm.

[0020] Preferably, the solution treatment and aging process involves holding the material at 500-520℃ for 4-6 hours, then quenching it in warm water to cool to room temperature, then holding it at 180-200℃ for 2-3 hours, and finally cooling it in air to room temperature.

[0021] Beneficial effects: The reinforced ABS conductive resin and its preparation method of the present invention have the following advantages:

[0022] 1. In this invention, poultry feathers are selected as template materials. The downy clusters in the feathers are three-dimensional spherical, consisting of a downy core and many radiating downy filaments, similar to dandelions. When used as templates to prepare ceramic materials, they are not only reinforced by ceramic particles, but also by ceramic fibers. Preparing them into preforms has a good mechanical strengthening effect.

[0023] 2. The reinforcing phase in this invention has a hindering effect on crack propagation. The mechanism is as follows: the crack propagation is deflected in front of the reinforcing phase, which also improves the strength of the composite material. Under external stress, cracks first form in the matrix. When the crack encounters the reinforcing phase during propagation, the crack propagation is blunted or the propagation path is deflected, making the crack path tortuous, consuming more fracture energy, and increasing the energy required for crack propagation. The crack path changes from straight to tortuous, which also improves the strength of the composite material. Detailed Implementation

[0024] The present invention will be further described below with reference to embodiments. These embodiments are illustrative of the present invention, but the present invention is not limited to these embodiments:

[0025] Example 1

[0026] A method for preparing an enhanced aluminum alloy material includes the following steps:

[0027] S1. Weigh the following components according to the following weight ratio: silicon 0.12%, iron 0.18%, copper 0.03%, manganese 0.04%, magnesium 0.01%, zinc 0.05%, vanadium 0.02%, with the balance being aluminum. Heat the above components until they melt to obtain molten aluminum.

[0028] S2. The TiC-modified alumina is made into preforms, preheated at 280°C, and then placed into a mold at 280°C;

[0029] S3. The molten aluminum prepared in step S1 is poured into a mold at 720°C. The volume fraction of the preform is 13%. The mold is pressurized at 150 MPa to allow the molten aluminum to penetrate into the preform. The preform is then solidified under pressure for 15 seconds. After the casting has solidified, it is subjected to solution treatment and aging treatment. The material is then held at 520°C for 4 hours, quenched in warm water to cool to room temperature, held at 200°C for 2 hours, and finally cooled to room temperature in air to obtain the reinforced aluminum alloy material.

[0030] The method for preparing the TiC-modified alumina is as follows:

[0031] S11. Add aluminum isopropoxide to hot water and stir to fully hydrolyze the aluminum isopropoxide. Then add nitric acid dropwise. The molar ratio of aluminum isopropoxide, water and nitric acid is 1:100:1. Continue the reaction to obtain alumina sol.

[0032] S12. Select down feathers with an average diameter of 1.1 cm, wash and dry them, and then soak them to allow the sol to be adsorbed onto the surface of the feathers. After soaking, centrifuge the feathers to remove excess sol from the surface. Then dry the feathers wrapped with sol to gel the sol. Repeat the soaking, centrifugation and drying steps 3 times. Finally, disperse the sample and then heat treat it. The heating rate is about 2℃ / min and the sample is kept at 350℃ for 6h and 600℃ for 5h, respectively, to obtain feather-shaped alumina.

[0033] S13. Add tetrabutyl titanate to an ethanol solution and stir until the tetrabutyl titanate is fully hydrolyzed. Then add graphite powder, with a ratio of tetrabutyl titanate to graphite powder of 4:1 mL / g. After stirring, filter, dry, and grind into a mixed powder.

[0034] S14. The mixed powder prepared in step S3 is spread on the feather-shaped alumina prepared in step S2 and subjected to in-situ laser reaction under an argon atmosphere. The laser power is 2000W, the scanning speed is 240mm / min, and the spot diameter is 3.5mm to obtain TiC modified alumina.

[0035] Example 2

[0036] A method for preparing an enhanced aluminum alloy material includes the following steps:

[0037] S1. Weigh the following components according to the following weight ratio: silicon 0.15%, iron 0.14%, copper 0.08%, manganese 0.01%, magnesium 0.03%, zinc 0.02%, vanadium 0.05%, with the balance being aluminum. Heat the above components until they melt to obtain molten aluminum.

[0038] S2. The TiC-modified alumina is made into preforms, preheated at 320°C, and then placed into a mold at 320°C;

[0039] S3. The molten aluminum prepared in step S1 is poured into a mold at 760°C. The volume fraction of the preform is 3%. The mold is pressurized at 80MPa to allow the molten aluminum to penetrate into the preform. The mold is then solidified under pressure for 20 seconds. After the casting has solidified, it is subjected to solution treatment and aging treatment. The material is then held at 500°C for 6 hours, then quenched in warm water to cool to room temperature, then held at 180°C for 3 hours, and finally cooled to room temperature in air to obtain the reinforced aluminum alloy material.

[0040] The method for preparing the TiC-modified alumina is as follows:

[0041] S11. Add aluminum isopropoxide to hot water and stir to fully hydrolyze the aluminum isopropoxide. Then add nitric acid dropwise. The molar ratio of aluminum isopropoxide, water and nitric acid is 1:100:1. Continue the reaction to obtain alumina sol.

[0042] S12. Select down feathers with an average diameter of 1.8 cm, wash and dry them, and then soak them to allow the sol to be adsorbed onto the surface of the feathers. After soaking, centrifuge the feathers to remove excess sol from the surface. Then dry the feathers wrapped with sol to gel the sol. Repeat the soaking, centrifugation and drying steps once. Finally, disperse the sample and then heat treat it. The heating rate is about 4℃ / min and the sample is kept at 400℃ for 5 h and 680℃ for 9 h, respectively, to obtain feather-shaped alumina.

[0043] S13. Add tetrabutyl titanate to an ethanol solution and stir until the tetrabutyl titanate is fully hydrolyzed. Then add graphite powder, with a ratio of tetrabutyl titanate to graphite powder of 6:1 mL / g. After stirring, filter, dry, and grind into a mixed powder.

[0044] S14. The mixed powder prepared in step S3 is spread on the feather-shaped alumina prepared in step S2 and subjected to in-situ laser reaction under an argon atmosphere. The laser power is 1500W, the scanning speed is 200mm / min, and the spot diameter is 2.5mm to obtain TiC modified alumina.

[0045] Example 3

[0046] A method for preparing an enhanced aluminum alloy material includes the following steps:

[0047] S1. Weigh the following components according to the following weight ratio: silicon 0.12%, iron 0.17%, copper 0.05%, manganese 0.03%, magnesium 0.01%, zinc 0.04%, vanadium 0.03%, with the balance being aluminum. Heat the above components until they melt to obtain molten aluminum.

[0048] S2. The TiC-modified alumina is made into preforms, preheated at 320°C, and then placed into a mold at 320°C;

[0049] S3. The molten aluminum prepared in step S1 is poured into a mold at 750°C. The volume fraction of the preform is 6%. The mold is pressurized at 130MPa to allow the molten aluminum to penetrate into the preform. The mold is then solidified under pressure for 15 seconds. After the casting has solidified, it is subjected to solution treatment and aging treatment. The material is held at 500°C for 4 hours, then quenched in warm water to cool to room temperature, then held at 200°C for 2 hours, and finally cooled to room temperature in air to obtain the reinforced aluminum alloy material.

[0050] The method for preparing the TiC-modified alumina is as follows:

[0051] S11. Add aluminum isopropoxide to hot water and stir to fully hydrolyze the aluminum isopropoxide. Then add nitric acid dropwise. The molar ratio of aluminum isopropoxide, water and nitric acid is 1:100:1. Continue the reaction to obtain alumina sol.

[0052] S12. Select down feathers with an average diameter of 1.7 cm, wash and dry them, and then soak them to allow the sol to be adsorbed onto the surface of the feathers. After soaking, centrifuge the feathers to remove excess sol from the surface. Then dry the feathers wrapped with sol to gel the sol. Repeat the soaking, centrifugation and drying steps twice. Finally, disperse the sample and then heat treat it. The heating rate is about 4℃ / min and the sample is kept at 360℃ for 5 h and 650℃ for 5 h respectively to obtain feather-shaped alumina.

[0053] S13. Add tetrabutyl titanate to an ethanol solution and stir until the tetrabutyl titanate is fully hydrolyzed. Then add graphite powder, with a ratio of tetrabutyl titanate to graphite powder of 4:1 mL / g. After stirring, filter, dry, and grind into a mixed powder.

[0054] S14. The mixed powder prepared in step S3 is spread on the feather-shaped alumina prepared in step S2 and subjected to in-situ laser reaction under an argon atmosphere. The laser power is 1600W, the scanning speed is 220mm / min, and the spot diameter is 3.5mm to obtain TiC modified alumina.

[0055] Example 4

[0056] A method for preparing an enhanced aluminum alloy material includes the following steps:

[0057] S1. Weigh the following components according to the following weight ratio: silicon 0.15%, iron 0.15%, copper 0.06%, manganese 0.02%, magnesium 0.03%, zinc 0.03%, vanadium 0.04%, with the balance being aluminum. Heat the above components until they melt to obtain molten aluminum.

[0058] S2. The TiC-modified alumina is made into preforms, preheated at 300°C, and then placed into a mold at 300°C;

[0059] S3. The molten aluminum prepared in step S1 is poured into a mold at 730°C. The volume fraction of the preform is 10%. The mold is pressurized at 100MPa to allow the molten aluminum to penetrate into the preform. The mold is then solidified under pressure for 20 seconds. After the casting has solidified, it is subjected to solution treatment and aging treatment. The material is then held at 520°C for 6 hours, quenched in warm water to cool to room temperature, held at 180°C for 3 hours, and finally cooled to room temperature in air to obtain the reinforced aluminum alloy material.

[0060] The method for preparing the TiC-modified alumina is as follows:

[0061] S11. Add aluminum isopropoxide to hot water and stir to fully hydrolyze the aluminum isopropoxide. Then add nitric acid dropwise. The molar ratio of aluminum isopropoxide, water and nitric acid is 1:100:1. Continue the reaction to obtain alumina sol.

[0062] S12. Select down feathers with an average diameter of 1.5 cm, wash and dry them, and then soak them to allow the sol to be adsorbed onto the surface of the feathers. After soaking, centrifuge the feathers to remove excess sol from the surface. Then dry the feathers wrapped with sol to gel the sol. Repeat the soaking, centrifugation and drying steps twice. Finally, disperse the sample and then heat treat it. The heating rate is about 2℃ / min and the sample is kept at 400℃ for 6 h and 630℃ for 6 h respectively to obtain feather-shaped alumina.

[0063] S13. Add tetrabutyl titanate to an ethanol solution and stir until the tetrabutyl titanate is fully hydrolyzed. Then add graphite powder, with a ratio of tetrabutyl titanate to graphite powder of 6:1 mL / g. After stirring, filter, dry, and grind into a mixed powder.

[0064] S14. The mixed powder prepared in step S3 is spread on the feather-shaped alumina prepared in step S2 and subjected to in-situ laser reaction under an argon atmosphere. The laser power is 1800W, the scanning speed is 200mm / min, and the spot diameter is 3.5mm to obtain TiC modified alumina.

[0065] Example 5

[0066] A method for preparing an enhanced aluminum alloy material includes the following steps:

[0067] S1. Weigh the following components according to the following weight ratio: silicon 0.13%, iron 0.16%, copper 0.05%, manganese 0.03%, magnesium 0.02%, zinc 0.03%, vanadium 0.04%, with the balance being aluminum. Heat the above components until they melt to obtain molten aluminum.

[0068] S2. The TiC-modified alumina is made into preforms, preheated at 300°C, and then placed into a mold at 300°C;

[0069] S3. The molten aluminum prepared in step S1 is poured into a mold at 745°C. The volume fraction of the preform is 8%. The mold is pressurized at 130MPa to allow the molten aluminum to penetrate into the preform. The mold is then solidified under pressure for 20 seconds. After the casting has solidified, it is subjected to solution treatment and aging treatment. The material is held at 510°C for 5 hours, then quenched in warm water to cool to room temperature, then held at 190°C for 2.5 hours, and finally cooled to room temperature in air to obtain the reinforced aluminum alloy material.

[0070] The method for preparing the TiC-modified alumina is as follows:

[0071] S11. Add aluminum isopropoxide to hot water and stir to fully hydrolyze the aluminum isopropoxide. Then add nitric acid dropwise. The molar ratio of aluminum isopropoxide, water and nitric acid is 1:100:1. Continue the reaction to obtain alumina sol.

[0072] S12. Select down feathers with an average diameter of 1.6 cm, wash and dry them, and then soak them to allow the sol to be adsorbed onto the surface of the feathers. After soaking, centrifuge the feathers to remove excess sol from the surface. Then dry the feathers wrapped with sol to gel the sol. Repeat the soaking, centrifugation and drying steps twice. Finally, disperse the sample and then heat treat it. The heating rate is about 2℃ / min and the sample is kept at 380℃ for 5 h and 640℃ for 5 h respectively to obtain feather-shaped alumina.

[0073] S13. Add tetrabutyl titanate to an ethanol solution and stir until the tetrabutyl titanate is fully hydrolyzed. Then add graphite powder, with a ratio of tetrabutyl titanate to graphite powder of 5:1 mL / g. After stirring, filter, dry, and grind into a mixed powder.

[0074] S14. The mixed powder prepared in step S3 is spread on the feather-shaped alumina prepared in step S2 and subjected to in-situ laser reaction under an argon atmosphere. The laser power is 1800W, the scanning speed is 220mm / min, and the spot diameter is 3.5mm to obtain TiC modified alumina.

[0075] Comparative Example 1

[0076] A method for preparing an enhanced aluminum alloy material includes the following steps:

[0077] S1. Weigh the following components according to the following weight ratio: silicon 0.15%, iron 0.15%, copper 0.06%, manganese 0.02%, magnesium 0.03%, zinc 0.03%, vanadium 0.04%, with the balance being aluminum. Heat the above components until they melt to obtain molten aluminum.

[0078] S2. Alumina is made into preforms, preheated at 300°C, and then placed into a mold at 300°C;

[0079] S3. The molten aluminum prepared in step S1 is poured into a mold at 730°C. The volume fraction of the preform is 10%. The mold is pressurized at 100MPa to allow the molten aluminum to penetrate into the preform. The mold is then solidified under pressure for 20 seconds. After the casting has solidified, it is subjected to solution treatment and aging treatment. The material is then held at 520°C for 6 hours, quenched in warm water to cool to room temperature, held at 180°C for 3 hours, and finally cooled to room temperature in air to obtain the reinforced aluminum alloy material.

[0080] The method for preparing the TiC-modified alumina is as follows:

[0081] S11. Add aluminum isopropoxide to hot water and stir to fully hydrolyze the aluminum isopropoxide. Then add nitric acid dropwise. The molar ratio of aluminum isopropoxide, water and nitric acid is 1:100:1. Continue the reaction to obtain alumina sol.

[0082] S12. Select down feathers with an average diameter of 1.5 cm, wash and dry them, and then impregnate them to allow the sol to adhere to the surface of the feathers. After impregnation, centrifuge the feathers to remove excess sol from the surface. Then, dry the feathers coated with sol to gel the sol. Repeat the impregnation, centrifugation and drying steps twice. Finally, disperse the sample and then heat treat it at a heating rate of about 2℃ / min and keep it at 400℃ for 6h and 630℃ for 6h respectively to obtain feather-shaped alumina.

[0083] Comparative Example 2

[0084] A method for preparing an enhanced aluminum alloy material includes the following steps:

[0085] S1. Weigh the following components according to the following weight ratio: silicon 0.13%, iron 0.16%, copper 0.05%, manganese 0.03%, magnesium 0.02%, zinc 0.03%, vanadium 0.04%, with the balance being aluminum. Heat the above components until they melt to obtain molten aluminum.

[0086] S2. The TiC-modified alumina is made into preforms, preheated at 300°C, and then placed into a mold at 300°C;

[0087] S3. The molten aluminum prepared in step S1 is poured into a mold at 745°C. The volume fraction of the preform is 8%. The mold is pressurized at 130MPa to allow the molten aluminum to penetrate into the preform. The mold is then solidified under pressure for 15 seconds. After the casting has solidified, it is subjected to solution treatment and aging treatment. The material is then held at 510°C for 5 hours, quenched in warm water to cool to room temperature, held at 190°C for 2.5 hours, and finally cooled to room temperature in air to obtain the reinforced aluminum alloy material.

[0088] The method for preparing the TiC-modified alumina is as follows:

[0089] S11. Add aluminum isopropoxide to hot water and stir to fully hydrolyze the aluminum isopropoxide. Then add nitric acid dropwise. The molar ratio of aluminum isopropoxide, water and nitric acid is 1:100:1. Continue the reaction to obtain alumina sol.

[0090] S12. Using pollen grains as templates, wash and dry them, then impregnate them to allow the sol to be adsorbed onto the surface of the pollen. After impregnation, centrifuge the pollen to remove excess sol from the surface. Then dry the pollen coated with sol to gel the sol. Repeat the impregnation, centrifugation and drying steps twice. Finally, disperse the sample and heat treat it at a heating rate of about 2℃ / min and keep it at 380℃ for 5h and 640℃ for 5h respectively to obtain feather-shaped alumina.

[0091] S13. Add tetrabutyl titanate to an ethanol solution and stir until the tetrabutyl titanate is fully hydrolyzed. Then add graphite powder, with a ratio of tetrabutyl titanate to graphite powder of 5:1 mL / g. After stirring, filter, dry, and grind into a mixed powder.

[0092] S14. The mixed powder prepared in step S3 is spread on the feather-shaped alumina prepared in step S2 and subjected to in-situ laser reaction under an argon atmosphere. The laser power is 1800W, the scanning speed is 220mm / min, and the spot diameter is 3.5mm to obtain TiC modified alumina.

[0093] Performance testing: The equipment used for tensile mechanical property testing was a Z100 universal testing machine, with a tensile rate of 5×10⁻⁶. -4 m / s, tensile sample gauge length 10 mm, 3 sets of data for each sample, and then take the average value.

[0094]

[0095] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A method for preparing an enhanced aluminum alloy material, characterized in that, Includes the following steps: S1. Weigh the following components according to the following weight ratios: silicon 0.12-0.15%, iron 0.14-0.18%, copper 0.03-0.08%, manganese 0.01-0.04%, magnesium 0.01-0.03%, zinc 0.02-0.05%, vanadium 0.02-0.05%, with the balance being aluminum. Heat the above components until they melt to obtain molten aluminum. S2. The TiC-modified alumina is made into preforms, preheated at 280-320℃, and then placed into a mold at 280-320℃; S3. Pour the molten aluminum prepared in step S1 into a mold at 720-760℃ and pressurize it with a pressure of 80-150MPa so that the molten aluminum can penetrate into the preform and solidify under pressure. Hold the pressure for 15-20s. After the casting has solidified and formed, perform solution treatment and aging treatment to obtain reinforced aluminum alloy material. The method for preparing the TiC-modified alumina is as follows: S11. Add aluminum isopropoxide to hot water, stir to fully hydrolyze the aluminum isopropoxide, then add nitric acid dropwise to continue the reaction and obtain aluminum oxide sol; S12. After washing and drying the feathers, soak them to allow the sol to adhere to the surface of the feathers. After soaking, centrifuge the feathers to remove excess sol from the surface. Then dry the feathers coated with sol to gel the sol. Repeat the soaking, centrifugation and drying steps 1-3 times. Finally, disperse the sample and heat treat it to obtain feather-shaped alumina. S13. Add tetrabutyl titanate to an ethanol solution and stir until the tetrabutyl titanate is fully hydrolyzed. Then add graphite powder, stir, filter, dry, and grind into a mixed powder. S14. The mixed powder prepared in step S13 is spread on the feather-shaped alumina prepared in step S12 and subjected to laser in-situ reaction under an argon atmosphere to obtain TiC modified alumina.

2. The method for preparing the reinforced aluminum alloy material according to claim 1, characterized in that: In step S11, the molar ratio of aluminum isopropoxide, hot water, and nitric acid is 1:100:

1.

3. The method for preparing the reinforced aluminum alloy material according to claim 1, characterized in that: In step S12, the feathers are three-dimensional spherical down clusters with an average diameter of 1-2 cm. The heat treatment involves a heating rate of 2-4℃ / min and holding at 350-400℃ and 600-680℃ for 5-9 hours respectively.

4. The method for preparing the reinforced aluminum alloy material according to claim 1, characterized in that: In step S13, the ratio of tetrabutyl titanate to graphite powder is 4-6:1 mL / g.

5. The method for preparing the reinforced aluminum alloy material according to claim 1, characterized in that: In step S14, the laser parameters are: laser power 1500-2000W, scanning speed 200-240mm / min, and spot diameter 2.5-3.5mm.

6. The method for preparing the reinforced aluminum alloy material according to claim 1, characterized in that: The solution treatment and aging process involves holding the material at 500-520℃ for 4-6 hours, then quenching it in warm water to cool to room temperature, then holding it at 180-200℃ for 2-3 hours, and finally cooling it in air to room temperature.

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