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A kind of aluminum alloy material and laser 3D printing aluminum alloy component based on the material

A technology of aluminum alloy materials and aluminum alloy components, applied in the direction of additive processing, additive manufacturing, etc., can solve problems such as unsuitability for aluminum alloys, small liquid phase surface tension, etc., to prevent grain growth, refine grains, The effect of improving processability

Active Publication Date: 2022-04-12
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The liquid-phase surface tension of the 3D printed aluminum nitride ceramic material is small so that the surface cracks of the ceramic product are less. However, this technical solution is not suitable for application to aluminum alloys.

Method used

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  • A kind of aluminum alloy material and laser 3D printing aluminum alloy component based on the material
  • A kind of aluminum alloy material and laser 3D printing aluminum alloy component based on the material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A laser 3D printing aluminum alloy component is 3D printed through the following steps:

[0031] (1) Design the three-dimensional model of the aluminum alloy component by using three-dimensional modeling software;

[0032] (2) configure the aluminum alloy material, mix 9250g Al, 450g Mn, 150g Ti, 150g Mg evenly to obtain the mixture powder, and use the gas atomization method to obtain the Al-Mn-Ti-Mg aluminum alloy powder after fully and uniformly melting, and the aluminum alloy The powder is sieved through a 200-mesh screen, and the sieved aluminum alloy powder is loaded into the powder feeding cylinder of the 3D printing equipment. After the cavity is sealed, it is vacuumed and filled with high-purity argon (≥99.99%) to make the oxygen If the content is less than 0.1%, preheat the substrate to 100°C;

[0033] (3) Laser forming is carried out according to the forming trajectory pre-designed by the 3D software. The printing parameters are: laser power 370W, scanning sp...

Embodiment 2

[0035] (1) Design the three-dimensional model of the aluminum alloy component by using three-dimensional modeling software;

[0036] (2) Configure aluminum alloy materials, mix 9400g Al, 450g Mn, and 150g Ti evenly to obtain mixture powder, and use gas atomization method to obtain Al-Mn-Ti aluminum alloy powder after fully and uniformly melting, pass the aluminum alloy powder through a 200-mesh sieve Mesh screening, put the screened aluminum alloy powder into the powder feeding cylinder of the 3D printing equipment, vacuumize the cavity and fill it with high-purity argon (≥99.99%), so that the oxygen content in the cavity is less than 0.1%, Preheat the substrate to 100°C;

[0037] (3) Laser forming is carried out according to the forming trajectory pre-designed by the 3D software. The printing parameters are: laser power 370W, scanning speed 1000mm / s, scanning distance 0.1mm, layer thickness 0.03mm.

Embodiment 3

[0039] (1) Design the three-dimensional model of the aluminum alloy component by using three-dimensional modeling software;

[0040] (2) configure the aluminum alloy material, mix 9250g Al, 450g Mn, 150g Ti, 150g Mg evenly to obtain the mixture powder, and use the gas atomization method to obtain the Al-Mn-Ti-Mg aluminum alloy powder after fully and uniformly melting, and the aluminum alloy The powder is sieved through a 200-mesh screen, and the sieved aluminum alloy powder is loaded into the powder feeding cylinder of the 3D printing equipment. After the cavity is sealed, it is vacuumed and filled with high-purity argon (≥99.99%) to make the oxygen If the content is less than 0.1%, preheat the substrate to 100°C;

[0041] (3) Laser forming is carried out according to the forming trajectory pre-designed by the 3D software. The printing parameters are: laser power 370W, scanning speed 1000mm / s, scanning distance 0.1mm, layer thickness 0.03mm.

[0042] (4) The aluminum alloy af...

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Abstract

The invention belongs to the field of laser additive manufacturing, and in particular relates to an aluminum alloy material and a laser 3D printed aluminum alloy component based on the material. The preparation method of the aluminum alloy material of the present invention comprises the following steps: (s1) uniformly mixing Al, Mn, and Ti to obtain a mixture, in parts by mass, the Mn content is 1-8 parts, and the Ti content is 1-8 parts 6 parts, the content of Al is 84-98 parts; (s2) After melting the mixture, the aluminum alloy powder is obtained by gas atomization, and dried to obtain the aluminum alloy material. The invention adds Mn and Ti elements, so that the processing performance and mechanical properties of the deformed aluminum alloy that are not suitable for the laser 3D printing process are significantly improved, and the developed alloy has extremely high thermal stability, and can use very simple heat treatment To relieve the residual stress generated during the 3D printing process.

Description

technical field [0001] The invention belongs to the field of laser additive manufacturing, and in particular relates to an aluminum alloy material and a laser 3D printed aluminum alloy component based on the material. Background technique [0002] Aluminum alloy is an alloy with aluminum as the base and other alloying elements added. Aluminum alloy is light in weight, has good corrosion resistance, high specific strength and specific stiffness, and has good plastic processing properties, making it one of the most widely used structural materials. It has been widely used in automotive, aerospace, construction, and electromechanical fields. Laser 3D printing technology is a technology that uses high-energy lasers to selectively melt and solidify metal materials layer by layer according to preset files, and finally manufacture metal parts. Compared with traditional casting, forging and powder metallurgy technology, the most obvious advantage of laser 3D printing technology is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F10/28B22F10/64B22F9/08C22C21/00B33Y10/00B33Y70/00B33Y80/00
CPCB22F9/082B22F3/24C22C21/00B33Y10/00B33Y70/00B33Y80/00B22F2003/248
Inventor 宋波张金良史玉升
Owner HUAZHONG UNIV OF SCI & TECH
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