Method for preparing Al-Fe-V-Si heat-resistance aluminum alloy parts by using electron beam selective melting technology

An al-fe-v-si, selective melting technology, applied in additive manufacturing, process efficiency improvement, additive processing, etc., can solve the limitation of the wide application of Al-Fe-V-Si heat-resistant aluminum alloy The growth of matrix grains and the reduction of mechanical properties of alloys can achieve the effect of good protection effect, high material utilization rate and reduction of development cycle.

Inactive Publication Date: 2018-12-21
BEIJING HANGXING MACHINERY MFG CO LTD
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  • Abstract
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Problems solved by technology

As the temperature rises, these high-temperature unstable phases will aggregate, grow, and polygonize, and even transform into phases that are harmful to the alloy, resulting in a decrease in the performance of the alloy.
Not only that, it is difficult to directly prepare structural parts with complex shapes (complex curved surfaces, cooling channels or inner hole structures) by using the above-mentioned processes. Long, high production cost, low production efficiency
On the other hand, the subsequent hot working process is likely to cause the grain growth of the alloy matrix and the coarsening of the dispersion strengthening phase, thereby reducing the mechanical properties of the alloy.
The shortcomings of the above traditional methods limit the further wide application of Al-Fe-V-Si series heat-resistant aluminum alloys

Method used

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  • Method for preparing Al-Fe-V-Si heat-resistance aluminum alloy parts by using electron beam selective melting technology
  • Method for preparing Al-Fe-V-Si heat-resistance aluminum alloy parts by using electron beam selective melting technology
  • Method for preparing Al-Fe-V-Si heat-resistance aluminum alloy parts by using electron beam selective melting technology

Examples

Experimental program
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Effect test

Embodiment 1

[0060] In this embodiment, the A2XX type electron beam selective melting system of Arcam AB, Sweden is used to prepare Al-11.5Fe-1.4V-2.3Si (wt.%, weight percentage) heat-resistant aluminum alloy parts. The preparation process is like figure 1 Shown, including:

[0061] (1). Select Al–11.5Fe–1.4V–2.3Si pre-alloyed powder prepared by argon atomization method, the powder is spherical or nearly spherical, and the diameter is between 45-160μm;

[0062] (2). First use the 3D drawing software (Magics) to establish the 3D CAD model of the alloy parts and save it as an STL file; then use the layering software (EBM assembler) to slice the STL file in the height direction and divide it into Slices with uniform thickness (0.1mm), slices contain cross-sectional profile information of alloy samples; use layering software to save slices as ABF files and import them into electron beam selective rapid prototyping equipment (EBM);

[0063] (3). Load the Al–11.5Fe–1.4V–2.3Si pre-alloy powder into the...

Embodiment 2

[0074] In this embodiment, the A2XX type electron beam selective melting system of Arcam AB, Sweden is used to prepare Al-11.5Fe-1.4V-2.3Si (wt.%, weight percentage) heat-resistant aluminum alloy parts. The preparation process is like figure 1 Shown, including:

[0075] (1). Select Al–11.5Fe–1.4V–2.3Si pre-alloyed powder prepared by argon atomization method, the powder is spherical or nearly spherical, and the diameter is between 45-160μm;

[0076] (2). First use the 3D drawing software (Magics) to establish the 3D CAD model of the alloy parts and save it as an STL file; then use the layering software (EBM assembler) to slice the STL file in the height direction and divide it into Slices with uniform thickness (0.05mm), slices contain cross-sectional profile information of alloy samples; use layering software to save slices as ABF files, and import them into electron beam selective rapid prototyping equipment (EBM);

[0077] (3). Put the Al–11.5Fe–1.4V–2.3Si pre-alloy powder into th...

Embodiment 3

[0088] In this embodiment, the A2XX type electron beam selective melting system of Arcam AB, Sweden is used to prepare Al-11.5Fe-1.4V-2.3Si (wt.%, weight percentage) heat-resistant aluminum alloy parts. The preparation process is like figure 1 Shown, including:

[0089] (1). Select Al–11.5Fe–1.4V–2.3Si pre-alloyed powder prepared by argon atomization method, the powder is spherical or nearly spherical, and the diameter is between 45-160μm;

[0090] (2). First use the 3D drawing software (Magics) to establish the 3D CAD model of the alloy parts and save it as an STL file; then use the layering software (EBM assembler) to slice the STL file in the height direction and divide it into Slices with uniform thickness (0.15mm), the slices contain the cross-sectional profile information of the alloy samples; the slices are saved as ABF files using layering software and imported into the electron beam selective rapid prototyping equipment (EBM);

[0091] (3). Load the Al–11.5Fe–1.4V–2.3Si pre...

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Abstract

The invention discloses a method for preparing Al-Fe-V-Si heat-resistance aluminum alloy parts by using an electron beam selective melting technology, and belongs to the technical field of electron beam welding. A crucible, a mold or a powder cover are not needed to prepare in the preparation process of the method, and meanwhile, such middle heat machining procedures as hot extrusion and forging are saved, so that the preparation process is simple, the cost is lower compared with such traditional preparation methods as spraying deposition and powder metallurgy, the production efficiency is high, and the development period of alloy products can be greatly shortened; metal components with any complicated shapes can be prepared; the shapes and the internal structures of the components can betotally controlled; and the personalized customization can be performed according to actual demands. After alloy parts are machined, no or less machining and aftertreatment are needed, so that both manpower and material resources are saved; and unmachined and redundant alloy powder can be recycled to achieve high material utilization rate.

Description

Technical field [0001] A method for preparing Al-Fe-V-Si heat-resistant aluminum alloy parts using electron beam selective melting technology relates to a method for preparing Al-Fe-V-Si heat-resistant aluminum alloy parts using electron beam selective melting technology, which belongs to Electron beam welding technology field. Background technique [0002] Al-Fe-V-Si series heat-resistant aluminum alloy is a new type of high-temperature alloy developed by Skinner and others of Allied-Signal Corporation in 1986 by using advection casting technology. Due to the formation of a high volume fraction of α-A1 in the alloy matrix 12 (Fe, V) 3 Si thermally stable dispersed particles, Al-Fe-V-Si alloy has a series of excellent comprehensive properties such as low density, high room temperature strength, good thermal stability, high ductility and fracture toughness, which makes the effective use temperature of the alloy extended to 300 ℃ Above, it is very hopeful to replace titanium alloy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105B33Y10/00
CPCB33Y10/00B22F10/00B22F10/36B22F10/28B22F10/366B22F10/362B22F10/32B22F12/30Y02P10/25
Inventor 孙少波任金欣李保永李宏伟王志敏
Owner BEIJING HANGXING MACHINERY MFG CO LTD
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