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High-density cross-scale solid solution ceramic reinforced aluminum-based composite material and preparation method thereof

A composite material and reinforced aluminum-based technology, which is applied in the direction of additive processing, additive manufacturing, and energy efficiency improvement, can solve the problems of easy agglomeration, limited addition of reinforcement phase, and difficulty in nano-particles, so as to improve mechanical properties, Uniform distribution of ceramic reinforcement phase, the effect of improving the forming quality and performance

Active Publication Date: 2022-01-04
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is a strong van der Waals force between nanoparticles, which is easy to agglomerate, making it difficult for a high content of nanoparticles to disperse uniformly in the matrix, which ultimately affects the forming quality and performance of the material.
Therefore, when the nano-reinforced phase is used, the amount of the reinforced phase added is often limited, and the performance improvement space of the final composite material is limited, which limits the engineering application of nanoparticle-reinforced aluminum matrix composites.

Method used

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  • High-density cross-scale solid solution ceramic reinforced aluminum-based composite material and preparation method thereof
  • High-density cross-scale solid solution ceramic reinforced aluminum-based composite material and preparation method thereof
  • High-density cross-scale solid solution ceramic reinforced aluminum-based composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Mix ZrC ceramic powder and TiC ceramic powder with pure Al powder according to the ratio of 3:2 each, the mass of ceramic powder accounts for 20% of the total mass of composite powder, and ball mill the mixed powder to prepare cross-scale (Ti, Zr) C reinforced aluminum base composite powder. Use QM series planetary ball mill to carry out ball milling and powder mixing operation. This process uses ceramic pots, and the ball milling medium is ceramic balls with diameters of 6mm, 8mm and 10mm. The parameters of the ball milling process are set as follows: the ball-to-material ratio is 2:1, the ball milling speed is 200rpm, and the ball milling time is 4h. At the same time, to prevent the temperature in the ball mill tank from being too high due to the continuous ball milling time being too long, the equipment operation mode during ball milling adopts a one-way interval operation mode, that is, it runs for 15 minutes and stands still for 5 minutes. The ball milling pro...

Embodiment 2

[0043] (1) Mix ZrC ceramic powder and TiC ceramic powder with pure aluminum metal powder in a ratio of 3:2 each, the mass of ceramic powder accounts for 15% of the total mass of the composite powder, and ball mill the mixed powder to prepare cross-scale (Ti, Zr)C reinforcement Aluminum matrix composite powder. Use QM series planetary ball mill to carry out ball milling and powder mixing operation. This process uses ceramic pots, and the ball milling medium is ceramic balls with diameters of 6mm, 8mm and 10mm. The parameters of the ball milling process are set as follows: the ball-to-material ratio is 2:1, the ball milling speed is 150rpm, and the ball milling time is 5h. At the same time, to prevent the temperature in the ball mill tank from being too high due to the continuous ball milling time being too long, the equipment operation mode during ball milling adopts a one-way interval operation mode, that is, it runs for 15 minutes and stands still for 5 minutes. The ball mil...

Embodiment 3

[0051] (1) Mix ZrC ceramic powder and TiC ceramic powder with Al-Mg alloy powder according to the ratio of 3:2 each. The mass of ceramic powder accounts for 10% of the total mass of the composite powder, and the mixed powder is ball milled to prepare cross-scale (Ti, Zr)C Reinforced aluminum matrix composite powder. Use QM series planetary ball mill to carry out ball milling and powder mixing operation. This process uses ceramic pots, and the ball milling medium is ceramic balls with diameters of 6mm, 8mm and 10mm. The parameters of the ball milling process are set as follows: the ball-to-material ratio is 2:1, the ball milling speed is 250rpm, and the ball milling time is 3h. At the same time, to prevent the temperature in the ball mill tank from being too high due to the continuous ball milling time being too long, the equipment operation mode during ball milling adopts a one-way interval operation mode, that is, it runs for 15 minutes and stands still for 5 minutes. The ba...

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Abstract

The invention discloses a high-density cross-scale solid solution ceramic reinforced aluminum-based composite material and a preparation method thereof. The high-density cross-scale solid solution ceramic reinforced aluminum-based composite material comprises an aluminum matrix as well as a TiC ceramic reinforced phase and a ZrC ceramic reinforced phase which are dispersed in the aluminum matrix; the TiC ceramic reinforced phase accounts for 4-8wt.% of the total mass of the composite material; the ZrC ceramic reinforced phase accounts for 6-12wt.% of the total mass of the composite material. According to the method, ZrC and TiC ceramic reinforced phases are added into the aluminum matrix, in the laser forming process, the ZrC and TiC reinforced phases are subjected to solid solution, a high-density cross-scale (Ti,Zr)C solid solution is generated, the strengthening effect of solid solutions of different sizes is exerted, and finally, the effect of improving the mechanical property of the material is achieved.

Description

technical field [0001] The invention belongs to the field of ceramic-reinforced aluminum-based composite materials, in particular to a high-density cross-scale solid-solution ceramic-reinforced aluminum-based composite material and a preparation method thereof. Background technique [0002] Aluminum matrix composites are widely used in aerospace, electronics, chemistry and other fields due to their low density, high specific strength, high specific modulus, good wear resistance, corrosion resistance and strong designability. By choosing a suitable reinforcement phase, the aluminum matrix composite can obtain higher strength and elastic modulus than the matrix material. Studies have shown that the addition of nano-reinforced phases can increase the strength of the material while maintaining the original ductility. However, there is a strong van der Waals force between nanoparticles, which makes it easy to agglomerate, making it difficult for a high content of nanoparticles t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C21/06C22C32/00B22F9/04B22F10/28B22F10/85B33Y10/00B33Y40/10B33Y70/10B22F10/366
CPCC22C21/00C22C21/06C22C32/0052B22F9/04B22F10/28B22F10/85B33Y10/00B33Y40/10B33Y70/10B22F10/366B22F2009/043Y02P10/25
Inventor 席丽霞冯丽莉顾冬冬
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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