Rare earth aluminum alloy powder suitable for additive manufacturing and preparation method of rare earth aluminum alloy powder

A technology of additive manufacturing and alloy powder, which is applied in the field of additive manufacturing, can solve the problems of small application range, single function, and less selection of types, and achieve the effects of no environmental pollution, simple process, and low oxygen content

Active Publication Date: 2021-05-25
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the rapid development of marine engineering, automobiles, rail transit, aerospace and other fields, the demand for metal powders suitable for additive manufacturing is also increasing sharply. small range
However, the heat-resistant aluminum alloy powder suitable for additive manufacturing, especially the heat-resistant rare earth aluminum alloy powder with excellent performance and its preparation method have not been reported yet.

Method used

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  • Rare earth aluminum alloy powder suitable for additive manufacturing and preparation method of rare earth aluminum alloy powder
  • Rare earth aluminum alloy powder suitable for additive manufacturing and preparation method of rare earth aluminum alloy powder

Examples

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Embodiment 1

[0032] This embodiment provides a rare earth aluminum alloy powder suitable for additive manufacturing, which is composed of the following elements in weight percentage: 10.00% Ce, 0.60% Mg, 0.10% Y, 0.25% Zr, and other impurities Less than 0.1%, the rest is aluminum.

[0033] The above-mentioned rare earth aluminum alloy powder suitable for additive manufacturing can be prepared by the following preparation methods, including:

[0034] S1, under the protection of high-purity argon, the aluminum ingot is heated and melted in an induction furnace at a temperature of 750°C.

[0035] S2, add the required alloying elements to the above aluminum liquid, adjust the ratio of each element by using the intermediate alloy, degas and remove the slag, and make its composition reach 10.00% of Ce, 0.60% of Mg, 0.10% of Y, 0.25% of Zr, The rest is aluminum, and the composition error is less than 0.02%, forming alloy liquid.

[0036] S3, lead the above-mentioned alloy liquid from the bottom...

Embodiment 2

[0040] This embodiment provides a rare earth aluminum alloy powder suitable for additive manufacturing, which is composed of the following elements in weight percentage: 8.00% Ce, 0.40% Mg, 0.10% Y, 2.50% Zr, and other impurities Less than 0.1%, the rest is aluminum.

[0041] The above-mentioned rare earth aluminum alloy powder suitable for additive manufacturing can be prepared by the following preparation methods, including:

[0042] S1, under the protection of high-purity argon, the aluminum ingot is heated and melted in an induction furnace to form aluminum liquid at a temperature of 730°C.

[0043] S2, add the required alloying elements to the above-mentioned aluminum liquid, adjust the ratio of each element with the intermediate alloy, degas and remove the slag, and make its composition reach 8.00% of Ce, 0.40% of Mg, 0.10% of Y, 2.50% of Zr, The rest is aluminum, and the composition error is less than 0.02%, forming alloy liquid.

[0044] S3, lead the above-mentioned ...

Embodiment 3

[0048] This embodiment provides a rare earth aluminum alloy powder suitable for additive manufacturing, which is composed of the following elements in weight percentage: 10.00% Ce, 0.60% Mg, 0.10% Y, 0.20% Zr, and other impurities Less than 0.1%, the rest is aluminum.

[0049] The above-mentioned rare earth aluminum alloy powder suitable for additive manufacturing can be prepared by the following preparation methods, including:

[0050] S1, under the protection of high-purity nitrogen, the aluminum ingot is heated and melted in an induction furnace to form aluminum liquid at a temperature of 780°C.

[0051] S2, add the required alloying elements to the above-mentioned aluminum liquid, adjust the ratio of each element by using the intermediate alloy, degas and remove the slag, and make its composition reach 10.00% of Ce, 0.60% of Mg, 0.10% of Y, 0.20% of Zr, The rest is aluminum, and the composition error is less than 0.02%, forming alloy liquid.

[0052] S3, lead the above-m...

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Abstract

The invention provides rare earth aluminum alloy powder suitable for additive manufacturing and a preparation method of the rare earth aluminum alloy powder. The preparation method comprises the steps that an aluminum ingot is heated and melted into molten aluminum; required alloy elements are added into the molten aluminum to form alloy liquid, wherein the alloy elements comprise the following preset components in percentage by weight: 1.00%-10.00% of Ce, 0.05%-8.00% of Mg, 0.10%-7.50% of Y, 0.10%-2.50% of Zr, less than 0.1% of impurities and the balance of aluminum; the alloy liquid is guided out through a flow guide pipe, the alloy liquid is impacted through high-pressure air flow, the alloy liquid is atomized, fine liquid drops are formed under the action of surface tension, and the fine liquid drops are solidified into spherical alloy powder; and the spherical alloy powder is collected in a vacuum collector, screened and dried, and the rare earth aluminum alloy powder is obtained. The method has the characteristics of high sphericity degree, less satellite powder and hollow powder, low oxygen content, high apparent density and the like, and can meet the use requirements of different printing working conditions of additive manufacturing.

Description

technical field [0001] The invention relates to the technical field of additive manufacturing, in particular to a rare earth aluminum alloy powder suitable for additive manufacturing and a preparation method thereof. Background technique [0002] Additive Manufacturing (AM), also known as 3D printing, is a combination of computer-aided design, material processing and molding technology, based on digital model files, through software and numerical control system to manufacture special materials layer by layer. A manufacturing method that directly manufactures a three-dimensional solid part that is identical to the corresponding digital model. It has the characteristics of simple process flow, short processing cycle and high material utilization rate. This makes it possible to manufacture complex structural parts that were restricted by traditional manufacturing methods in the past, and can perform topology optimization on the model structure as needed. [0003] After search...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00B22F9/08B22F1/00B33Y70/00
CPCC22C21/00B22F9/082B33Y70/00B22F2009/0848B22F2009/0824B22F1/065Y02P10/25C22C1/026C22C21/06C22C1/0416B22F10/20B22F10/34B22F10/28B22F1/052B22F1/145B22F10/25B22F1/00B33Y70/10B33Y10/00B22F1/05B22F2301/052B22F2304/10
Inventor 高海燕吕海洋王朦朦李敏吴贇王宇飞张驰王俊孙宝德
Owner SHANGHAI JIAO TONG UNIV
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