High-strength aluminum alloy powder, application of high-strength aluminum alloy powder in 3D printing and 3D printing method of high-strength aluminum alloy powder

A 3D printing and aluminum alloy technology, applied in the field of 3D printing, can solve the problems of restricting wide application and achieve the effect of inhibiting the formation and expansion of cracks

Active Publication Date: 2022-04-05
苏州倍丰智能科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The mechanical properties of the above new alloys are better than the most commonly used Al-Si series aluminum alloys, but still lower than those of high-strength aluminum alloys such as 2xxx series, 6xxx series, and 7xxx series prepared by traditional methods, which limits their wide application.

Method used

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  • High-strength aluminum alloy powder, application of high-strength aluminum alloy powder in 3D printing and 3D printing method of high-strength aluminum alloy powder
  • High-strength aluminum alloy powder, application of high-strength aluminum alloy powder in 3D printing and 3D printing method of high-strength aluminum alloy powder
  • High-strength aluminum alloy powder, application of high-strength aluminum alloy powder in 3D printing and 3D printing method of high-strength aluminum alloy powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1 prepared a special Al-Mn-Mg-Sc-Zr aluminum alloy powder for 3D printing. In terms of mass percentage, the composition content of elements in the aluminum alloy microparticles is: Mn: 4.95wt%; Mg Sc: 0.73wt%; Zr: 0.22wt%; Si: 0.03wt%; Fe: 0.05wt%, and the rest is Al. figure 1 It is a schematic diagram of the particle size distribution of the high-strength aluminum alloy powder prepared according to the formula of Example 1 of the present invention. Such as figure 1 As shown, the particle size distribution of the aluminum alloy powder presents a typical normal distribution, and the particle size is 15-63 microns, which meets the technical requirements of SLM printing.

[0030] Using the above-mentioned aluminum alloy powder for 3D printing work, firstly, before printing, put the above-mentioned aluminum alloy powder in a drying oven for drying treatment, and keep it warm at 80°C for 6h. Before printing, argon gas is passed into the printing chamber to control ...

Embodiment 2

[0035] Example 2 prepared a special Al-Mn-Mg-Sc-Zr aluminum alloy powder for 3D printing. In terms of mass percentage, the composition content of the elements in the aluminum alloy microparticles is: Mn: 4.22wt%; Mg Sc: 0.68wt%; Zr: 0.28wt%; Si: 0.06wt%; Fe: 0.07wt%, and the rest is Al.

[0036] Using the above-mentioned aluminum alloy powder for 3D printing work, firstly, before printing, put the above-mentioned aluminum alloy powder in a drying oven for drying treatment, and keep it warm at 80°C for 6h. Before printing, argon gas is passed into the printing chamber to control the oxygen content below 200ppm, and at the same time, the temperature of the substrate is heated to 90°C.

[0037] Next, the 3D printing work is carried out, and the following printing parameters are used: the laser power is 370W; the scanning speed is 1100mm / s; the scanning distance is 0.13mm; the scanning layer thickness is 0.03mm.

[0038] After printing, the mechanical properties of the printed pr...

Embodiment 3

[0042] Example 3 prepared a special Al-Mn-Mg-Sc-Zr aluminum alloy powder for 3D printing. In terms of mass percentage, the composition content of the elements in the aluminum alloy microparticles is: Mn: 4.89wt%; Mg Sc: 0.71wt%; Zr: 0.3wt%; Si: 0.05wt%; Fe: 0.03wt%, and the rest is Al.

[0043] Using the above-mentioned aluminum alloy powder for 3D printing work, firstly, before printing, put the above-mentioned aluminum alloy powder in a drying oven for drying treatment, and keep it warm at 80°C for 6h. Before printing, argon gas is passed into the printing chamber to control the oxygen content below 200ppm, and at the same time, the temperature of the substrate is heated to 90°C.

[0044] Next, the 3D printing work is carried out, and the following printing parameters are used: the laser power is 370W; the scanning speed is 1100mm / s; the scanning distance is 0.13mm; the scanning layer thickness is 0.03mm.

[0045] After printing, the mechanical properties of the printed produ...

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Abstract

The invention discloses high-strength aluminum alloy powder, which is prepared from the following components in percentage by mass: 4.2 to 6.0 weight percent of Mn, 1.2 to 3.0 weight percent of Mg, 0.6 to 1.0 weight percent of Sc, 0.05 to 0.6 weight percent of Zr, 0.01 to 0.2 weight percent of Si, 0.01 to 0.2 weight percent of Fe and the balance of Al. By optimizing the content of the alloy elements such as Mn, Mg, Fe and Si, the remarkable solution strengthening effect is achieved; by adding Sc and Zr, local formation of equiaxed grains is promoted, crack formation and expansion are inhibited, and meanwhile, an effective precipitation strengthening effect is achieved by means of dispersion particles generated in the aging process.

Description

technical field [0001] The invention relates to the technical field of 3D printing, in particular to a high-strength aluminum alloy powder and its application in 3D printing and its 3D printing method. Background technique [0002] Additive manufacturing technology is a kind of rapid prototyping technology. It integrates computer-aided design, material processing and molding technologies. Based on 3D model files, it uses metal powder or plastic and other bondable materials to realize step-by-step prototyping through software systems. Layer manufacturing, a manufacturing method that directly constructs three-dimensional three-dimensional parts. In view of its simple process flow, short processing cycle, and high material utilization rate, additive manufacturing technology has broad application prospects in jewelry, medical care, footwear, industrial design, architecture, aerospace, automobiles, education and other fields. [0003] Selective laser melting (SLM) metal 3D print...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00B22F10/28B22F1/142B22F10/64B22F10/85B33Y10/00B33Y40/20B33Y50/02B33Y70/00
CPCY02P10/25
Inventor 金晓杰施春宇张达明
Owner 苏州倍丰智能科技有限公司
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