3D printing process method of high-strength aluminum manganese alloy

An aluminum-manganese alloy and 3D printing technology, applied in the field of 3D printing, can solve the problems of high price, unfavorable large-scale promotion and application, and low content of rare earth elements, etc., and achieve the effects of hindering grain growth, improving SLM performance, and improving performance

Inactive Publication Date: 2020-09-15
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the content of rare earth elements is low and the price is expensive, which is not conducive to large-scale promotion and application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The aluminum-manganese alloy powder was obtained by gas atomization, and its chemical composition: the content of Mn was 5.12%wt, the content of Mg was 1.21%wt, the content of Si was 0.79%wt, the content of Zr was 1.08%wt, the content of Fe was 0.10%wt, and the rest for Al. The average particle size of the powder is 35.18 μm, more than 90% of the powder particles are spherical or quasi-spherical, and the powder fluidity is good. First dry the powder in a vacuum oven at 70°C for 12 hours, then put the powder into the chamber of a Hanbang HBD-SLM100 printer (the diameter of the laser beam spot used is about 50 μm), and pass high-purity argon gas to make the chamber The oxygen content in the chamber is less than 0.1%, and then laser scanning is performed twice to preheat the substrate, and then the powder is printed according to the 3D model of the part. The printing parameters were set as laser power 200W, scanning rate 400mm / s, printing layer thickness 30μm, scanning sp...

Embodiment 2

[0048] This embodiment provides a 3D printing process for high-strength aluminum-manganese alloys, including the following steps:

[0049] High-strength aluminum-manganese alloy raw materials (Mn content is 1.00%wt, Mg content is 3.00%wt, Si content is 0.01%wt, Zr content is 3.50%wt, Fe content is 0.01%wt, and the rest is Al) by heating and melting It is well mixed;

[0050] High-quality aluminum-manganese alloy powder is obtained by gas atomization technology for high-strength aluminum-manganese alloy in the molten state. After 5 hours of vacuum drying, aluminum-manganese alloy powder for 3D printing is obtained. The aluminum-manganese alloy powder for 3D printing The particle size is between 10-60μm, more than 90% of the powder particles are spherical or quasi-spherical, the powder particle size is uniform, the fluidity is good, it will not be oxidized during the preparation process, and the powder quality is excellent;

[0051] Adjust the printing parameters, and carry out...

Embodiment 3

[0054] This embodiment provides a 3D printing process for high-strength aluminum-manganese alloys, including the following steps:

[0055] High-strength aluminum-manganese alloy raw materials (Mn content is 10.00%wt, Mg content is 0.01%wt, Si content is 2.00%wt, Zr content is 0.01%wt, Fe content is 1.50%wt, the rest is Al) through heating and melting It is well mixed;

[0056] High-quality aluminum-manganese alloy powder is obtained by gas atomization technology for high-strength aluminum-manganese alloy in the molten state. After 24 hours of vacuum drying, aluminum-manganese alloy powder for 3D printing is obtained. The aluminum-manganese alloy powder for 3D printing The particle size is between 10-60μm, more than 90% of the powder particles are spherical or quasi-spherical, the powder particle size is uniform, the fluidity is good, it will not be oxidized during the preparation process, and the powder quality is excellent;

[0057] Adjust the printing parameters, and carry ...

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Abstract

The invention relates to a 3D printing process method of a high-strength aluminum manganese alloy, and belongs to the technical field of 3D printing. The 3D printing process method comprises the stepsthat firstly, a high-strength aluminum manganese alloy is mixed evenly by heating and melting; then the melted high-strength aluminum manganese alloy is subjected to a gas atomization technology to prepare high-quality aluminum manganese alloy powder, and aluminum manganese alloy powder for 3D printing is obtained after drying; and printing parameters are adjusted, 3D printing is conducted according to three-dimensional model data of parts in printing equipment introduced with inert gas, and a 3D printing product with the high-strength aluminum manganese alloy as a raw material is obtained. Compared with the prior art, according to the product printed by the process method, the relative density can reach more than 99%, the Vickers hardness can reach more than 140 HV, the tensile strengthcan reach more than 440 MPa, the elongation can reach 20%, after proper hear treatment, the hardness of a sample can reach more than 180 HV, the tensile strength can be further increased to more than565 MPa, and the elongation is maintained at or above 19%.

Description

technical field [0001] The invention belongs to the technical field of 3D printing, and in particular relates to a 3D printing process method of a high-strength aluminum-manganese alloy. Background technique [0002] 3D printing is a preparation technology that uses three-dimensional model data to obtain products with complex shapes through layer-by-layer accumulation. Compared with the preparation methods of traditional plastics, ceramics, metals and alloys, and composite materials, 3D printing technology has a series of advantages such as the ability to prepare high-precision and complex-shaped products, save raw materials, and save costs, and has a good application prospect. Currently commonly used 3D printing methods include direct three-dimensional printing technology (3DP), selective laser melting technology (SLM), stereolithography technology (SLA), fused deposition technology (FDM), etc., among which selective laser melting technology (SLM) It is widely used in 3D p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105B22F3/24B22F1/00B22F9/08B33Y10/00B33Y70/00C22C21/00
CPCB22F9/082B22F3/24C22C21/00B33Y10/00B33Y70/00B22F2003/248B22F2998/10B22F1/065Y02P10/25
Inventor 尹春月严彪严鹏飞
Owner TONGJI UNIV
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