In-situ nanometer reinforced aluminum alloy for lightweight automobile anti-collision beam and preparation method

A technology of anti-collision beams and aluminum alloys, which is applied in the field of in-situ nano-strengthened aluminum alloys for lightweight automobile anti-collision beams and its preparation. It can solve the problem of complex extrusion process temperature and procedures, which are not suitable for industrialized batch and continuous production, and it is difficult to get rid of strong plasticity inversion. To achieve the effect of improving the impact energy absorption effect, promoting dynamic recrystallization, and increasing the nucleation rate

Active Publication Date: 2019-03-22
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, through the design of the composition of the aluminum alloy, it is still difficult to get rid of the relationship of strong plasticity inversion by relying on the traditional alloy precipitation strengthening to improve the performance of the material; increasing the temperature of the extrusion process and changing the process to make the process more complicated are not suitable for industrial batch continuous production

Method used

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  • In-situ nanometer reinforced aluminum alloy for lightweight automobile anti-collision beam and preparation method
  • In-situ nanometer reinforced aluminum alloy for lightweight automobile anti-collision beam and preparation method
  • In-situ nanometer reinforced aluminum alloy for lightweight automobile anti-collision beam and preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0025](1) Aluminum alloy casting: Put 1Kg of aluminum alloy into a high-purity graphite crucible to melt at 780°C and keep it warm for 10 minutes, then raise the temperature of the melt to 870°C, and add in batches the dry-treated and wrapped with high-purity aluminum foil The reaction powder (particle size is less than 100 μm, the quality of zirconium carbonate is 38g, potassium fluoroborate is 69g, potassium fluorotitanate 75g) enters the melt, and the combined device of low-frequency magnetic field and high-energy ultrasonic field is turned on at the same time (magnetic field: frequency 5Hz, magnetic force Current 50A; ultrasonic: power 800W, frequency 15kHz) react for 20min, remove the scum on the surface of the melt after the reaction and spray hexachloroethane into the solution for refining; then put it into a resistance furnace to lower the temperature to 660°C and Keep warm, start the combined device of high-frequency pulsed magnetic field and high-energy ultrasonic fie...

Embodiment 2

[0030] The preparation method is basically the same as in Example 1, except that the reactants are different in quality. The quality of zirconium carbonate is 77g, potassium fluoroborate is 138g, and potassium fluorotitanate is 142g. 2 +2vol%TiB 2 +2vol%Al 2 o 3 ) aluminum matrix composite cast rod.

Embodiment 3

[0032] The preparation method is basically the same as in Example 1, except that the reactants are different in quality, the quality of zirconium carbonate is 115g, potassium fluoroborate is 206g, potassium fluorotitanate is 210g and the reaction is obtained (3vol% ZrB 2 +3vol%TiB 2 +3vol%Al 2 o 3 ) aluminum matrix composite cast rod.

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Abstract

The invention relates to an aluminum-based composite material, in particular to an in-situ nanometer reinforced aluminum alloy for a lightweight automobile anti-collision beam and a preparation method. Through the in-situ synthesis technology, mixed powder of zirconium carbonate, potassium fluoborate and potassium fluotitanate is adopted as a reactant, an acoustomagnetic coupled field is applied in the reaction process, an acoustomagnetic coupled field is applied in the solidification stage, and an evenly-distributed nanometer wild phase clustered composite material of a fine grain structure is obtained. Then, through the optimized hot extrusion technology and quenching technology, material defects are reduced, sub-grains in the material are promoted to generate dynamic recrystallization,fine recrystallized grains are obtained, the strength, plasticity, impact resistance and corrosion resistance of the material are improved, the collision energy absorption effect of the material is improved to the largest degree, and a qualified aluminum-based composite material profile for the automobile anti-collision beam is obtained.

Description

technical field [0001] The invention relates to an aluminum-based composite material, and specifically designs an in-situ nano-reinforced aluminum alloy for a lightweight automobile anti-collision beam and a preparation method thereof. Background technique [0002] Energy saving and emission reduction, environmental protection and traffic safety are the three major topics in the automotive industry today, and vehicle lightweight is one of the measures to achieve these goals. Studies have shown that for every 100kg reduction in vehicle weight, fuel consumption per 100 kilometers can be reduced by 0.3 liters, and carbon dioxide emissions per kilometer can also be reduced by 7.5-12.5g. Therefore, the lightweight of automobiles is a research hotspot at present. One of the important ways is to use lightweight high-strength materials. Aluminum alloy is a lightweight material with excellent performance, which is widely used in automobile structural parts. Automobile anti-collision...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/10C22C32/00C22C21/00C22F1/04
CPCC22C1/1036C22C21/00C22C32/0005C22F1/04C22C1/1052
Inventor 陶然赵玉涛浦俭英怯喜周陈刚李其荣
Owner JIANGSU UNIV
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