Preparing process of high-performance TiB2/A356 composite panel

A composite material and preparation process technology, which is applied in the field of preparation technology of in-situ particle TiB2 reinforced A356 composite material sheet, can solve the problems of low bonding strength between particles and materials, uneven distribution of rolled plate structure, unstable material properties, etc. The grains are small and round, the particles are evenly dispersed, and the plasticity is good.

Inactive Publication Date: 2018-08-31
镇江海利新材料科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The application number is 201410505929.X, and the patent named a boron carbide-aluminum alloy composite material plate and its preparation method is prepared into a composite material plate by rolling. This method prepares a composite material by adding boron carbide into the aluminum alloy. During the preparation process, it is easy to have uneven distribution of particles and low bonding strength between particles and materials. The prepared rolled plate is prone to uneven distribution of structures and unstable material properties.

Method used

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  • Preparing process of high-performance TiB2/A356 composite panel

Examples

Experimental program
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Effect test

Embodiment example 1

[0010] TiB 2 Particle reinforced A356 composite material, its main component is: TiB 2 Particles: 2.5~3%wt, Si: 6.5~7.5%wt, Mg: 0.3~0.45%wt, Ti≤0.2%wt, Fe≤0.12%wt, Mn≤0.05%wt, Cu≤0.1%wt, Zn≤ 0.05%wt, balance Al.

[0011] Process steps: (1) Potassium fluorotitanate and potassium fluoroborate are dried and mixed evenly for later use. (2) Put the A356 alloy into a graphite crucible, heat it to 800~850°C through an induction cooker, and let it stand for 1~2min to ensure that the alloy melts. (3) Add the dried and uniformly mixed reaction powder into the molten A356 according to the weight of 8% of the matrix mass, and add the powder at one time. (4) After the reaction powder is added, stir at 800~850°C. The stirring method is: manual stirring for 2 minutes, then mechanical stirring for 10 minutes, and standing for 2 to 3 minutes. After standing, continue manual stirring for 3 minutes. Finally, stir mechanically for 4~8min, and continue to stand still for 1~2min. (5) After the...

Embodiment example 2

[0013] TiB 2 Particle reinforced A356 composite material, its main component is: TiB 2 Particles: 2.5~3%wt, Si: 6.5~7.5%wt, Mg: 0.3~0.45%wt, Ti≤0.2%wt, Fe≤0.12%wt, Mn≤0.05%wt, Cu≤0.1%wt, Zn≤ 0.05%wt, balance Al.

[0014] Process steps: (1) Potassium fluorotitanate and potassium fluoroborate are dried and mixed evenly for later use. (2) Put the A356 alloy into a graphite crucible, heat it to 800~850°C through an induction cooker, and let it stand for 1~2min to ensure that the alloy melts. (3) Add the dried and uniformly mixed reaction powder into the molten A356 according to the weight of 8% of the matrix mass, and add the powder at one time. (4) After the reaction powder is added, stir at 800~850°C. The stirring method is: manual stirring for 2 minutes, then mechanical stirring for 10 minutes, and standing for 2 to 3 minutes. After standing, continue manual stirring for 3 minutes. Finally, stir mechanically for 4~8min, and continue to stand still for 1~2min. (5) After the...

Embodiment example 3

[0016] TiB 2 Particle reinforced A356 composite material, its main component is: TiB 2 Particles: 2.5~3%wt, Si: 6.5~7.5%wt, Mg: 0.3~0.45%wt, Ti≤0.2%wt, Fe≤0.12%wt, Mn≤0.05%wt, Cu≤0.1%wt, Zn≤ 0.05%wt, balance Al.

[0017]Process steps: (1) Potassium fluorotitanate and potassium fluoroborate are dried and mixed evenly for later use. (2) Put the A356 alloy into a graphite crucible, heat it to 800~850°C through an induction cooker, and let it stand for 1~2min to ensure that the alloy melts. (3) Add the dried and uniformly mixed reaction powder into the molten A356 according to the weight of 8% of the matrix mass, and add the powder at one time. (4) After the reaction powder is added, stir at 800~850°C. The stirring method is: manual stirring for 2 minutes, then mechanical stirring for 10 minutes, and standing for 2 to 3 minutes. After standing, continue manual stirring for 3 minutes. Finally, stir mechanically for 4~8min, and continue to stand still for 1~2min. (5) After the ...

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Abstract

The invention relates to a preparing process of an aluminum base composite panel, in particular to a preparing process of a high-strength TiB2 particle enhanced aluminum base composite panel. The process specifically includes the steps of placing an A356 alloy material in a graphite crucible to be heated to a certain temperature, adding a certain amount of dry potassium fluoborate to molten A356 alloy for reaction for a certain period of time, cooling the alloy to a certain temperature after the reaction ends, casting the alloy into an extrusion die, cooling the die to a certain temperature and then directly conducting extraction by a certain mode, and directly conducting rolling by a certain mode after extrusion ends to obtain the panel. The TiB2 particle enhanced A356 composite panel prepared through the process contains small base body crystal particles and few impurities and is uniform in particle distribution, the tensile strength of the panel is greatly improved, and plasticity is also improved.

Description

technical field [0001] The invention relates to the preparation of a composite material sheet, specifically, an in-situ granular TiB 2 Enhanced fabrication process of A356 composite sheet. Background technique [0002] At present, A356 aluminum alloy has the advantages of good fluidity, no thermal cracking tendency, small thermal expansion coefficient, and good air tightness. At the same time, A356 has high strength and is very suitable for use in automotive, aerospace and other fields. However, the plasticity of A356 is poor. If it is used in key components in the fields of automobile, aerospace and other fields, the performance is still insufficient, and the tensile strength and plasticity need to be further enhanced. [0003] The demand for aluminum alloy sheets in my country is huge, and the annual output has reached more than 120,000 tons. According to incomplete statistics, the output of plates, strips, and foils has reached about 60% of the total output of aluminum ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/02C22C32/00C22C1/10C22F1/043
CPCC22C1/1036C22C21/02C22C32/0073C22F1/043C22C1/1052
Inventor 张松利梁智萍
Owner 镇江海利新材料科技有限公司
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