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A rare earth aluminum alloy wire material for 3D printing and preparation method thereof

An aluminum alloy wire and 3D printing technology, applied in the direction of additive processing, etc., can solve the problems of high operating environment requirements, low material utilization rate, powder environmental pollution, etc.

Active Publication Date: 2021-05-14
HUNAN ORIENTAL SCANDIUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Additive manufacturing of metal materials can be divided into two process methods: powder feeding / powder spreading and wire feeding. Among them, metal powder-based additive manufacturing has high forming accuracy and is suitable for processing small components with complex shapes, but the material utilization rate is low, and the powder is harmful to the The environment is polluted to a certain extent, and there is a problem of high operating environment requirements; at present, the aluminum alloy printing materials at home and abroad are mainly powder materials, and the main components are AlSi 10 Mg and AlSi 12 Two kinds, there are printed products with low strength (σ b <350Mpa), small molding size, etc.

Method used

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  • A rare earth aluminum alloy wire material for 3D printing and preparation method thereof
  • A rare earth aluminum alloy wire material for 3D printing and preparation method thereof
  • A rare earth aluminum alloy wire material for 3D printing and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] A preparation method for a rare earth aluminum alloy wire material for 3D printing is carried out according to the following steps:

[0054](1) Raw material smelting: In a vacuum furnace, the smelting composition is Al-4%Mg-0.3%Mn-0.7%Er-0.3%Zr-0.05%Ti, Fe-3 Pa. (each percentage is mass percentage)

[0055] (2) The ingot in the step (1) is homogenized and annealed at 480°C / 12h, skinned and headed.

[0056] (3) The ingot in the step (2) is continuously extruded at 500°C, after rough drawing, intermediate drawing, annealing, and fine drawing, and then peeled to obtain a wire with a diameter of 1.2mm, according to GB / T 228- 2010 standard for mechanical performance testing, wire tensile strength σ b =356Mpa, yield strength σ 0.2 =325Mpa; the microscopic appearance of the wire is as follows figure 1 shown.

[0057] (4) The filament in the step (3) is printed with a laser fuse 3D printing device, and processed into a test piece after heat treatment. According to the GB / ...

Embodiment 2

[0059] (1) Raw material smelting: In a vacuum furnace, the smelting composition is Al-5%Mg-0.3%Mn-0.4%Sc-0.2%Zr, control Fe-3 Pa. (each percentage is mass percentage)

[0060] (2) The ingot in the step (1) is subjected to homogenization annealing at 350° C. / 10 h, skinned and head removed.

[0061] (3) The ingot in the step (2) is continuously extruded at 500°C, after rough drawing, intermediate drawing, annealing, and fine drawing, and then peeled to obtain a wire with a diameter of 1.2mm, according to GB / T 228- 2010 standard for mechanical performance testing, wire tensile strength σ b =347Mpa, yield strength σ 0.2 =312Mpa, elongation 9%.

[0062] (4) The filament in the step (3) is printed with a laser fuse 3D printing device, and processed into a test piece after heat treatment. According to the GB / T 228-2010 standard for mechanical properties testing, tensile strength σ b =457Mpa, yield strength σ 0.2 =415Mpa, elongation 10%.

Embodiment 3

[0064] (1) Raw material smelting: In a vacuum furnace, the smelting composition is Al-5%Mg-0.3%Mn-0.5%Sc-0.25%Zr to control Fe-3 Pa.

[0065] (2) The ingot in the step (1) is subjected to homogenization annealing at 350° C. / 10 h, skinned and head removed.

[0066] (3) The ingot in the step (2) is continuously extruded at 500°C, after rough drawing, intermediate drawing, annealing, and fine drawing, and then peeled to obtain a wire with a diameter of 1.2mm, according to GB / T 228- 2010 standard for mechanical performance testing, wire tensile strength σ b =414Mpa, yield strength σ 0.2 =382Mpa, elongation 12%.

[0067] (4) The filament in the step (3) is printed with a laser fuse 3D printing device, and processed into a test piece after heat treatment. According to the GB / T 228-2010 standard for mechanical properties testing, tensile strength σ b =492Mpa, yield strength σ 0.2 =458Mpa, elongation 11%.

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Abstract

The invention relates to a rare earth aluminum alloy wire material for 3D printing and a preparation method thereof. In the rare earth aluminum alloy wire material, the Mg content is 3-5wt%, the RE content is 0.4-1.2wt%, and the Zr content is 0.1-0.1wt%. 1.0wt%, Mn content is 0.1‑1.0wt%, Ti content is 0.05‑0.25wt%, O content≤0.05wt%, N content≤0.02wt%, H content≤0.01wt%, the balance is Al and unavoidable impurities; wherein, the ratio of the Mn content to the RE content is 0.5-1:1, and the ratio of the Zr content to the RE content is 0.2-1:1. The present invention adds rare earth and zirconium elements on the basis of the aluminum-magnesium alloy composition, refines the crystal grains, and produces Al 3 (REZr) precipitation strengthening, used for smooth wire feeding on 3D printers, not easy to break, high strength, to ensure the accuracy of product printing; printed parts have high density, good mechanical properties and corrosion resistance.

Description

technical field [0001] The invention relates to a rare earth aluminum alloy wire material for 3D printing and a preparation method thereof, belonging to the field of material preparation. Background technique [0002] 3D printing is an advanced digital manufacturing technology, which manufactures three-dimensional solid parts by layer-by-layer accumulation. As a research hotspot in 3D printing, laser 3D printing technology has the advantages of high material utilization rate, high processing flexibility, short processing cycle, and is not limited by the geometric shape of parts. It is especially suitable for manufacturing small batches of parts with complex shapes. It has broad application prospects in medical, automobile, shipbuilding, nuclear power and other fields. [0003] Additive manufacturing of metal materials can be divided into two process methods: powder feeding / powder spreading and wire feeding. Among them, metal powder-based additive manufacturing has high form...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/06C22C1/03C22F1/047B33Y70/00
CPCB33Y70/00C22C1/026C22C1/03C22C21/06C22F1/047
Inventor 闫建平李雄飞徐定能陈青松陈卫平
Owner HUNAN ORIENTAL SCANDIUM
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