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Preparation method for closed cell foamed magnesium alloy composite material

A closed-cell foam and composite material technology, which is applied in the field of closed-cell composite material manufacturing, can solve problems such as brittle fracture, and achieve the effects of strengthening strength, uniform pore size distribution, and wide-ranging sources.

Active Publication Date: 2015-01-28
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It overcomes the defect of brittle fracture of the closed-cell foamed magnesium alloy produced by the existing process under the condition of quasi-static compression deformation

Method used

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  • Preparation method for closed cell foamed magnesium alloy composite material
  • Preparation method for closed cell foamed magnesium alloy composite material
  • Preparation method for closed cell foamed magnesium alloy composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1. AZ31 magnesium alloy (Mg95%, Al3.1%, Zn0.82%, Mn0.34%) of commercial specifications and hollow ceramic microspheres of QK150 are selected as raw materials. According to the required pore size and porosity requirements, weigh 1KG magnesium alloy ingot, cut the magnesium alloy into 8 equal parts according to the thickness of 10mm, and the diameter of the magnesium alloy is 90mm; and according to the volume ratio of the magnesium alloy sheet 40% QK150 commercial hollow ceramic microspheres.

[0031] 2. Add the commercial magnesium alloy flakes and hollow ceramic microsphere particles weighed in the first step into the mold in layers at intervals, that is, the magnesium alloy flakes are the bottom layer, and the hollow ceramic microspheres and magnesium alloy flakes are added at intervals, that is, every Place a piece of magnesium alloy, sprinkle a layer of hollow ceramic microspheres evenly on its surface, then place a piece of magnesium alloy sheet to cover, then cover...

Embodiment 2

[0042] 1. The commercial standard AM50A (Al4.5-5.3% Mn0.28-0.50% Zn<0.2% Si<0.5%) magnesium alloy and the commercial standard QK300 hollow ceramic microspheres are selected as raw materials. Slice the magnesium alloy uniformly with a thickness of 15mm. According to the required pore size and porosity requirements, weigh 0.9KG magnesium alloy sheet, cut into 5 pieces, and use QK300 commercial hollow ceramic microspheres with a volume ratio of 50% to the magnesium alloy sheet.

[0043] 2. Add the commercial magnesium alloy flakes and hollow ceramic microsphere particles weighed in the first step into the mold layer by layer, that is, the magnesium alloy flakes are the bottom layer, and the hollow ceramic microspheres and magnesium alloy flakes are added at intervals, that is, every Place a piece of magnesium alloy, evenly sprinkle hollow ceramic microspheres on its surface to cover the magnesium alloy sheet, and the uppermost layer is the magnesium alloy sheet.

[0044] 3. Then...

Embodiment 3

[0050] 1. AZ91D (Al8.5-9.5%, Zn0.45-0.9%, Mn0.17-0.4%) magnesium alloy of commercial specification and hollow ceramic microspheres of commercial specification HC600+ are selected as raw materials. The magnesium alloy is uniformly sliced ​​at a thickness of 20mm. According to the required pore size and porosity requirements, weigh 1.2KG magnesium alloy sheet, cut into 6 pieces, and use HC600+ commercial hollow ceramic microspheres with a volume ratio of 60% to the magnesium alloy sheet.

[0051] 2. Add the commercial magnesium alloy flakes and hollow ceramic microsphere particles weighed in the first step into the mold layer by layer, that is, the magnesium alloy flakes are the bottom layer, and the hollow ceramic microspheres and magnesium alloy flakes are added at intervals, that is, every Place a piece of magnesium alloy, evenly sprinkle hollow ceramic microspheres on its surface to cover the magnesium alloy sheet, and the uppermost layer is the magnesium alloy sheet.

[00...

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Abstract

The invention provides a preparation method for a closed cell foamed magnesium alloy composite material. The method includes the following steps: a magnesium alloy ingot is cut into magnesium alloy sheets with identical thicknesses, and the thickness of each sheet ranges from 3 millimeters to 50 millimeters; the magnesium alloy sheets obtained through cutting are placed in a die, and a covering layer consisting of hollow ceramic microspheres is uniformly laid between every two adjacent layers of the magnesium alloy sheets; the total volume of the hollow ceramic microspheres is 2 to 50 percent of the total volume of the magnesium alloy sheets; the die containing the magnesium alloy sheets and the hollow ceramic microspheres is placed in a smelting furnace for melt foaming, and the closed cell foamed magnesium alloy composite material is finally obtained through air cooling. The closed cell foamed magnesium alloy prepared through the method achieves more uniform particle diameter distribution, the zigzag plateau segment of a foamed magnesium alloy stress-strain curve is smoothened, brittle fracture is transformed into ductile fracture, and the mechanical properties are obviously better than those of foamed magnesium alloy materials at present.

Description

technical field [0001] The technical solution of the invention relates to the manufacture of closed-pore composite materials, in particular to a preparation method of closed-cell foamed magnesium alloy composite materials. Background technique [0002] With the progress of human society and the continuous development and application of high-tech in the field of material science, human demand for new materials continues to increase. As a new multifunctional material, porous metal foam fully meets the current development requirements. Porous metal foam has excellent properties that other bulk metal materials do not have. It is comprehensively characterized by energy absorption, flame retardancy, heat resistance, impact resistance, electromagnetic shielding and recyclability. It is widely used in general industries and high-tech fields. gained wider and wider effect. Compared with aluminum foam, magnesium foam alloy has lighter weight, higher specific strength and specific st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/08C22C1/02C22C23/00
Inventor 夏兴川冯俊龙黄建赵维民张赞
Owner HEBEI UNIV OF TECH
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