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A kind of aluminum-copper-manganese porous composite material and its preparation method and application

A porous composite material, aluminum-copper technology, applied in the direction of additive processing, etc., can solve the problems of reducing material formability and mechanical properties, poor mechanical properties, shrinkage porosity, and high sensitivity to thermal cracking. The effect of high efficiency and simple preparation process

Inactive Publication Date: 2021-09-07
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The alloy comprises: 1.1wt%-1.8wt% Cu; 1.0wt%-1.6wt% Mn; 0.6wt%-1.0wt% Mg; 0.3wt%-0.5wt% Fe; 0.2wt%-0.5 CeLa of wt% or 0.2wt%-0.3wt%; Si less than 0.04wt%; The balance is aluminum and unavoidable impurity; The preparation method of described Al-Cu-Mn alloy comprises the following steps: (A) the The alloy is made into a cold-rolled alloy strip; (B) the cold-rolled alloy strip is subjected to aging heat treatment to obtain the aluminum-copper-manganese alloy plate. The preparation method described in this scheme has a long processing flow and complex molds, etc. question
[0004] CN106636772A discloses an aluminum alloy composite material and its preparation method. The aluminum alloy composite material includes the following components: 70-85 parts of aluminum, 2.5-3 parts of copper, 0.4-0.8 parts of manganese, 1.0-1.5 parts of magnesium, titanium 3.0-5.0 parts; the preparation process of the aluminum alloy composite material includes melting each component to obtain the aluminum alloy composite material. The method described in this scheme has the disadvantages that the product is prone to poor mechanical properties, shrinkage porosity, and segregation. defect
[0005] However, the 3D printed Al-Cu-Mn alloy based on high-energy beams is highly sensitive to hot cracking, and it is easy to generate hot crack defects, which drastically reduces the formability and mechanical properties of the material.

Method used

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  • A kind of aluminum-copper-manganese porous composite material and its preparation method and application
  • A kind of aluminum-copper-manganese porous composite material and its preparation method and application
  • A kind of aluminum-copper-manganese porous composite material and its preparation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] The preparation method of aluminum-copper-manganese porous composite material:

[0061] (1) Prepare aluminum-copper-manganese alloy powder. The preparation method of the aluminum-copper-manganese alloy powder includes mixing metal aluminum, metal copper and metal manganese according to the formula ratio, placing it in a vacuum induction melting furnace for melting at 700°C, and then Perform gas atomization powder making to obtain spherical powder, and pass through the powder collection device and screening device to obtain aluminum-copper-manganese alloy powder with a particle size of ≤200 mesh;

[0062] Based on the mass of the obtained Al-Cu-Mn alloy powder as 100%, the mass percentage of Al in the Al-Cu-Mn alloy powder is 92.9%, the mass percentage of Cu is 6.2%, and the mass percentage of Mn is 0.3% %, the content of impurity elements is 0.6%;

[0063] (2) the particle size obtained in step (1)≤200 mesh aluminum-copper-manganese alloy powder and the particle size≤2...

Embodiment 2

[0067] The difference between this embodiment and embodiment 1 is that the laser power in step (3) is 250W, the scan rate is 165mm / s, and other conditions are completely the same as those in embodiment 1.

[0068] The morphology of the aluminum-copper-manganese porous composite material prepared in this example is as follows figure 2 As shown, it can be seen from the figure that the obtained aluminum-copper-manganese porous composite material has no thermal cracks and has circular closed cells. After testing, its porosity is 4.67%. According to the GB / T228-2010 standard, the aluminum-copper-manganese porous The mechanical performance test of the composite material shows that the microhardness is 72.22HV.

Embodiment 3

[0070] The difference between this embodiment and embodiment 1 is that the laser power in step (3) is 340W, the scan rate is 333mm / s, and other conditions are completely the same as those in embodiment 1.

[0071] The morphology of the aluminum-copper-manganese porous composite material prepared in this example is as follows image 3 As shown, it can be seen from the figure that the obtained aluminum-copper-manganese porous composite material has no thermal cracks and has circular closed cells. After testing, its porosity is 4.32%. According to the GB / T228-2010 standard, the aluminum-copper-manganese porous The mechanical performance test of the composite material shows that the microhardness is 72.96HV.

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Abstract

The invention relates to an aluminum-copper-manganese porous composite material, a preparation method and application thereof. The preparation method of the aluminum-copper-manganese porous composite material of the present invention uses aluminum-copper-manganese alloy powder and nano-metal oxides as raw materials to obtain the aluminum-copper-manganese porous composite material through 3D printing; the obtained aluminum-copper-manganese porous composite material has The characteristics of thermal cracking and high strength; the porosity of the aluminum-copper-manganese porous composite material obtained by the method of the invention is 1-30%; the microhardness is 60-80HV.

Description

technical field [0001] The invention belongs to the field of inorganic materials, and relates to an aluminum-copper-manganese porous composite material and a preparation method and application thereof. Background technique [0002] Aluminum-copper-manganese alloy has light specific gravity, anti-oxidation, high hardness, and good machinability. It can be used as a light and high-strength structural material. It is often used to manufacture various light and high-load parts and structural parts. It is widely used in civil applications such as automobiles, ships, and aerospace fields. and the military field. [0003] CN105568093A discloses an aluminum-copper-manganese alloy used for a lithium battery casing and a preparation method thereof. The alloy comprises: 1.1wt%-1.8wt% Cu; 1.0wt%-1.6wt% Mn; 0.6wt%-1.0wt% Mg; 0.3wt%-0.5wt% Fe; 0.2wt%-0.5 CeLa of wt% or 0.2wt%-0.3wt%; Si less than 0.04wt%; The balance is aluminum and unavoidable impurity; The preparation method of descri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/12C22C32/00B22F3/11C22C1/08B33Y10/00B33Y70/10
CPCB22F3/11B33Y10/00B33Y70/00C22C21/12C22C32/0036
Inventor 李欣蔚朱强李干韩双黄谆卢宏兴彭锦康
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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