In-situ nanocomposite ceramic-reinforced aluminum alloy powder for 3D printing and preparation method thereof

A composite ceramic and 3D printing technology, applied in the field of additive manufacturing, can solve the problems of reducing the performance of aluminum alloys, consuming more energy, and having more slag, achieving high bulk density, improving overall performance, reducing production cycle and production cost effect

Inactive Publication Date: 2018-03-06
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing problem is that due to the addition of fluxes Li2TiF6 and LiBF4, more slag appears in the in-situ reaction smelting process, which is difficult to completely remove, and is easy to remain in the alumin

Method used

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  • In-situ nanocomposite ceramic-reinforced aluminum alloy powder for 3D printing and preparation method thereof
  • In-situ nanocomposite ceramic-reinforced aluminum alloy powder for 3D printing and preparation method thereof
  • In-situ nanocomposite ceramic-reinforced aluminum alloy powder for 3D printing and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] In-situ nano-composite ceramic reinforced aluminum alloy powder for 3D printing of the present invention, in-situ nano-Al 2 o 3 with TiB 2 Ceramic particles are uniformly dispersed and reinforced aluminum alloy powder (aluminum alloy powder of Al2O3 phase and TiB2 phase grown on an aluminum alloy substrate in situ), and its preparation method includes the following steps:

[0039] (1) Raw material configuration: B 2 o 3 、TiO 2 The powder and the aluminum alloy block are weighed at a molar mass ratio of 1:1:15;

[0040] (2) Induction smelting: Put the weighed aluminum alloy block into the preset vacuum (in this example, the preset vacuum degree is 0.05Pa) frequency induction furnace, and melt it under the protection of filling inert argon , slag removal, the melting temperature is 1200°C, the B 2 o 3 、TiO 2 The oxide powder is added to the aluminum alloy melt, and the electromagnetic stirring is turned on to promote the 3B 2 o 3 +3TiO 2 +10Al→5Al 2 o 3 +3TiB...

Embodiment 2

[0044] The difference between this embodiment and specific embodiment 1 is that when the mixture is proportioned in step (1), the B 2 o 3 、TiO 2 The molar mass ratio of the powder to the base aluminum alloy block is controlled at 1:1:25; in step (3), the melt flow rate is set to 1.5Kg / min, and the others are the same as in Embodiment 1, and the obtained Al 2 o 3 Ceramic reinforcement phase and TiB 2 Aluminum alloy powder of ceramic reinforcement phase (as attached Figure 2-3 shown).

Embodiment 3

[0046] The difference between this embodiment and specific embodiment 1 is that in step (2), the melting temperature is controlled at 1600°C; in step (3), the melt flow rate is set to 2 Kg / min, and the others are the same as in specific embodiment 1 Same, get Al 2 o 3 Ceramic reinforcement phase and TiB 2 Aluminum alloy powder of ceramic reinforcement phase (as attached Figure 4 shown).

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Abstract

The invention belongs to the technical field of preparation of reinforced materials, and relates to in-situ nanocomposite ceramic-reinforced aluminum alloy powder and a preparation method thereof, inparticular to in-situ nanocomposite ceramic-reinforced aluminum alloy powder for 3D printing and a preparation method thereof. Through combination of an in-situ reaction and an atomization powder preparation technology, special Al2O3 phase and TiB2 ceramic phase-reinforced aluminum alloy powder for 3D printing is prepared in site. The nanoparticle-reinforced aluminum alloy powder prepared by the preparation method provided by the invention has excellent overall performance, uniform particle size distribution, high sphericity, high bulk density, excellent fluidity, excellent metal/ceramic interface bonding performance and the like, and can fully meet requirements of different 3D printed aluminum alloy components.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing, and relates to an in-situ nanocomposite ceramic-reinforced aluminum alloy powder and a preparation method thereof, in particular to an in-situ nanocomposite ceramic-reinforced aluminum alloy powder for 3D printing and a preparation method thereof. Aluminum alloy powder is suitable for 3D printing high-performance aluminum alloy components. Background technique [0002] In recent years, with the advancement of laser technology and intelligent manufacturing technology, 3D printing technology based on the principle of additive manufacturing has achieved rapid development. 3D printing technology no longer relies on traditional cutting tools, fixtures and molds, but uses a three-dimensional model for layer-by-layer manufacturing, with fast forming speed and high precision, thus realizing "free manufacturing". Especially for parts with complex spatial shapes and thin walls, 3D printing ...

Claims

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Application Information

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IPC IPC(8): C22C21/00C22C32/00B22F9/08B33Y70/00C22C1/10
CPCC22C1/1042C22C21/00C22C32/0005B22F9/082B33Y70/00C22C1/1052
Inventor 顾冬冬夏木建余冠群马成龙戴冬华陈洪宇
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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