Method for preparing foamed aluminum composite material

A technology of composite materials and foamed aluminum, which is applied in the field of preparation of foamed aluminum composite materials, can solve the problems of brittle fracture and low compressive strength, and achieve the effects of high ductility fracture, high compressive strength and improved energy absorption capacity

Inactive Publication Date: 2015-01-21
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a preparation method of foamed aluminum composite material, which is a method of compounding dispersed embedded manganese particles and closed-cell foamed aluminum to obtain a high compressive strength, high porosity The closed-cell aluminum foam composite material with ductile fracture overcomes the disadvantages of low compressive strength of commercial pure aluminum-based aluminum foam composite materials prepared by the prior art, and brittle fracture is prone to occur during compression

Method used

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  • Method for preparing foamed aluminum composite material
  • Method for preparing foamed aluminum composite material
  • Method for preparing foamed aluminum composite material

Examples

Experimental program
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Effect test

Embodiment 1

[0027] The first step is to cut commercial pure aluminum ingots with a purity of 99.5% by mass of industrial pure aluminum into aluminum blocks, take 855g of aluminum blocks and put them into the crucible, start the resistance furnace to raise the temperature to 800°C, keep it warm for 15 minutes, and make the crucible The aluminum block melts and maintains a uniform temperature;

[0028] In the second step, adjust the temperature of the resistance furnace in the first step to 700°C and keep it warm for 15 minutes so that the overall temperature of the aluminum liquid in the crucible is 700°C. 2% calcium metal particles by mass, start the stirring paddle at the same time, keep the stirring speed at 500r / min, and the stirring time is 8 minutes, so that the calcium metal particles added are evenly dispersed;

[0029] The third step is to add commercial manganese particles with a particle size of 100 meshes that are pre-packed with aluminum foil to the aluminum melt obtained in t...

Embodiment 2

[0036] The first step is to cut industrial pure aluminum and commercial pure aluminum ingots with a purity of 99.5% by mass into aluminum blocks, take 800g of aluminum blocks and put them into the crucible, start the resistance furnace to raise the temperature to 800°C, and keep it warm for 10 minutes to make the The aluminum block melts and maintains a uniform temperature;

[0037] In the second step, adjust the temperature of the resistance furnace in the first step to 700°C and keep it warm for 20 minutes, so that the overall temperature of the aluminum liquid in the crucible is 700°C, and add 1.5% of the mass of the aluminum liquid wrapped in aluminum foil to the aluminum liquid Aluminum powder, start the stirring paddle at the same time, keep the stirring speed at 600r / min, and the stirring time is 2 minutes, so that the added aluminum powder is dispersed evenly;

[0038] The third step is to add commercial manganese particles with a particle size of 80 meshes that are pre-...

Embodiment 3

[0042] The first step is to cut commercial pure aluminum ingots with a purity of 99.5% by mass into aluminum blocks, take 1000g of aluminum blocks and put them into the crucible, start the resistance furnace to raise the temperature to 800°C, keep it warm for 20 minutes, and make the crucible The aluminum block melts and maintains a uniform temperature;

[0043] In the second step, adjust the temperature of the resistance furnace in the first step to 700°C, keep it warm for 30 minutes, so that the overall temperature of the aluminum liquid in the crucible is 700°C, and add 5% of the mass of the aluminum liquid wrapped in aluminum foil to the aluminum liquid Silicon carbide particles, start the stirring paddle at the same time, keep the stirring speed at 1000r / min, and stir for 20 minutes, so that the added silicon carbide particles are evenly dispersed;

[0044] The third step is to add commercial manganese particles with a particle size of 500 meshes that are pre-packed with ...

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Abstract

The invention provides a method for preparing a foamed aluminum composite material, relates to the manufacturing of alloy with open or closed pores, and specifically relates to a method for compounding dispersed embedded manganese particles and closed-pore foamed alumium. The method comprises the following steps of: smelting commercially pure alumium into alumium melt and preserving heat, tackifying the alumium melt, adding manganese particles, foaming the alumium melt with manganese and preserving heat, cooling in air so that the foamed alumium is solidified and formed, and then cooling by wind, thereby obtaining the closed-pore foamed alumium composite material high in compression strength, and high in porosity and ductile fracture finally. The method provided by the invention overcomes the shortcomings of low compression strength of the commercially pure alumium-based foamed alumium composite material prepared by the prior art and easy brittle fracture in the compression process.

Description

technical field [0001] The technical solution of the invention relates to the manufacture of alloys with open or closed pores, in particular to a method for preparing foamed aluminum composite materials. Background technique [0002] Aluminum foam is a heterogeneous material composed of base metal and pores accounting for more than 70% of the volume, and has many unique properties. According to the connectivity of the pores, aluminum foam can be divided into open-cell aluminum foam and closed-cell aluminum foam. Closed-cell aluminum foam has a series of excellent properties such as small specific gravity, large specific stiffness, large specific surface area, good shock absorption performance, good sound insulation effect, and high electromagnetic shielding performance. It has a wide range of applications in construction, machinery, transportation, aerospace and defense industries. Applications. In the last ten years, the industrialized production of foamed metal has recei...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/08C22C21/00
Inventor 夏兴川张赞訾军赵维民
Owner HEBEI UNIV OF TECH
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