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High-strength heat-resistant aluminum alloy powder for 3D printing and preparation method thereof

A 3D printing and aluminum alloy technology, applied in the field of 3D printing, can solve problems such as cracking, mechanical property degradation, and component failure

Active Publication Date: 2021-05-11
有研增材技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, with the continuous improvement of equipment lightweight requirements, aluminum alloys have gradually become a research hotspot for 3D printing materials, but traditional high-strength aluminum alloys will crack due to factors such as segregation and intermetallic compounds when they are formed by 3D printing methods. Therefore, it is urgent to develop high-strength aluminum alloy powder suitable for 3D printing
[0003] At present, when the cast aluminum alloys conventionally used for 3D printing are used at temperatures exceeding 100°C, their mechanical properties will drop rapidly, causing parts to fail during use. Long-term service at higher temperatures

Method used

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  • High-strength heat-resistant aluminum alloy powder for 3D printing and preparation method thereof
  • High-strength heat-resistant aluminum alloy powder for 3D printing and preparation method thereof

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Effect test

Embodiment 1

[0034] This embodiment provides a high-strength heat-resistant aluminum alloy powder for 3D printing, which consists of the following components and mass percentages: Fe 8.0%, V 1.0%, Si 1.5%, Mn 0.6%, Mg 1.8%, Cu 1.8%, Ti 0.05% %, Zr 0.15%, Sr 0.01%, La 0.05%, Sc 0.05%, and the rest are Al and unavoidable impurities. The preparation method comprises the following steps:

[0035] (1) Using the master alloy of pure aluminum, pure magnesium and aluminum as raw material, carry out batching according to the above-mentioned mass percentage according to the alloy composition;

[0036] (2) Put the raw materials in step (1) into an intermediate frequency induction graphite furnace, in which the magnesium needs to be wrapped with aluminum foil and pressed at the bottom, and the prepared raw materials are heated and melted under a protective atmosphere at a melting temperature of 700 ° C, kept for 5 minutes, and then Pour into molds to cool;

[0037] (3) Select qualified aluminum allo...

Embodiment 2

[0041] This embodiment provides a high-strength heat-resistant aluminum alloy powder for 3D printing, which is composed of the following components and mass percentages: Fe 9.0%, V 1.1%, Si 1.7%, Mn 0.7%, Mg 1.9%, Cu 1.9%, Ti 0.1 %, Zr 0.2%, Sr0.02%, La 0.12%, Er 0.08%, and the rest are Al and unavoidable impurities. The preparation method comprises the following steps:

[0042] (1) Using the master alloy of pure aluminum, pure magnesium and aluminum as raw material, carry out batching according to the above-mentioned mass percentage according to the alloy composition;

[0043] (2) Put the raw materials in step (1) into an intermediate frequency induction graphite furnace, in which the magnesium needs to be wrapped with aluminum foil and pressed at the bottom, and the prepared raw materials are heated and melted under a protective atmosphere at a melting temperature of 750°C and kept for 5 minutes. Then pour into the mold to cool;

[0044] (3) Select qualified aluminum alloy...

Embodiment 3

[0048] This embodiment provides a high-strength heat-resistant aluminum alloy powder for 3D printing, which is composed of the following components and mass percentages: Fe 10.0%, V 1.2%, Si 1.9%, Mn 0.8%, Mg 2.0%, Cu 2.0%, Ti 0.15% %, Zr 0.25%, Sr 0.025%, Ce 0.15%, Sc 0.15%, and the rest are Al and unavoidable impurities. The preparation method comprises the following steps:

[0049] (1) Using the master alloy of pure aluminum, pure magnesium and aluminum as raw material, carry out batching according to the above-mentioned mass percentage according to the alloy composition;

[0050] (2) Put the raw materials in step (1) into an intermediate frequency induction graphite furnace, in which the magnesium needs to be wrapped with aluminum foil and pressed at the bottom, and the prepared raw materials are heated and melted under a protective atmosphere at a melting temperature of 800°C and kept for 10 minutes. Then pour into the mold to cool;

[0051] (3) Select qualified aluminu...

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Abstract

The invention relates to high-strength heat-resistant aluminum alloy powder for 3D printing and a preparation method of the high-strength heat-resistant aluminum alloy powder. The aluminum alloy powder comprises, by weight, 8%-12% of Fe, 1.0%-1.5% of V, 1.0%-2.0% of Si, 0.5%-1.2% of Mn, 1.5%-2.5% of Mg, 1.5%-2.5% of Cu, 0.05%-0.5% of Ti, 0.1%-0.3% of Zr, 0.01%-0.1% of Sr, 0.1%-0.5% of rare earth elements and the balance Al and inevitable impurities. The aluminum alloy powder provided by the invention has the characteristics of good formability, good heat resistance and excellent mechanical properties when being used for 3D printing.

Description

technical field [0001] The invention relates to the technical field of 3D printing, in particular to a high-strength heat-resistant aluminum alloy powder for 3D printing and a preparation method thereof. Background technique [0002] 3D printing is a molding and manufacturing technology that combines materials, machinery, computers and numerical control. The preparation process does not require direct molding of molds. It can greatly reduce the amount of materials used in single-piece customization and complex-piece molding, and shorten the manufacturing cycle. It is casting, forging, An important supplement to traditional processing methods such as welding, it can meet the development requirements of advanced forming manufacturing technology in the future, and is widely used in aerospace, shipbuilding, automobile manufacturing and other fields. At the same time, with the continuous improvement of equipment lightweight requirements, aluminum alloys have gradually become a re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C1/03C22B9/05C22C1/06B22F9/08B22F1/00B33Y70/00
CPCC22C21/00C22C1/026C22C1/03C22B9/05C22C1/06B22F9/082B33Y70/00B22F1/142Y02P10/25
Inventor 胡强师静琳王志刚赵新明张金辉刘英杰王永慧盛艳伟
Owner 有研增材技术有限公司
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