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In situ mixed granula reinforced aluminium base composite material

A particle-reinforced aluminum and composite material technology, applied in the field of aluminum-based materials, can solve problems such as brittle phases and uneven distribution of materials, and achieve good mechanical properties, formability, strength and modulus.

Inactive Publication Date: 2007-10-10
HUBEI BLUESKY ALUMINUM ALLOY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide an in-situ hybrid particle reinforced aluminum matrix composite material, which solves the defects of brittle phases and uneven distribution of materials in the previous mixed particle reinforced aluminum matrix composite materials , AlN and TiB 2 The particles are dispersed and distributed in the matrix, which plays a strengthening role and significantly improves the strength and modulus of the matrix

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] The components and their mass percentages of the present invention are: Si 3%, Mg 0.2%, TiB 0.1%2, AlN 0.1%, and the balance is Al.

[0012] AlN and TiB in composites 2 The particle size is 50-300nm, and the particle shape is mainly hexagonal and cuboid. Dense and uniform material, AlN and TiB 2 Enhanced particle dispersion in the matrix, AlN and TiB 2 The interface with the substrate is clean and well bonded. Mechanical properties of composites treated with T6: σ b =320MPa, σ 0.2 =262MPa, δ=3.4%, E=74GPa.

Embodiment 2

[0014] The components of the present invention and their mass percentages are: Si 10%, Mg 1.5%, TiB 2 12%, AlN 5%, and the balance is Al.

[0015] AlN and TiB 2 The particle size is 50-300nm, and the particle shape is mainly hexagonal and cuboid. Dense and uniform material, AlN and TiB 2 Enhanced particle dispersion in the matrix, AlN and TiB 2 The interface with the substrate is clean and well bonded. Mechanical properties of composite materials after T6 treatment: σ b =347MPa, σ 0.2 =290MPa, δ=1.9%, E=84GPa.

Embodiment 3

[0017] The components of the present invention and their mass percentages are: Si 20%, Mg 3%, TiB 2 25%, AlN 10%, and the balance is Al.

[0018] AlN and TiB 2 The particle size is 50-300nm, and the particle shape is mainly hexagonal and cuboid. Dense and uniform material, AlN and TiB 2 Enhanced particle dispersion in the matrix, AlN and TiB 2 The interface with the substrate is clean and well bonded. Mechanical properties of composites after T6 treatment: σ b =361MPa, σ 0.2 =305MPa, δ=1.2%, E=92GPa.

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Abstract

An in-situ particle mixture reinforced Al-base composition with high strength and modulus contains Si (3-20 wt%), Mg (0.2-3), hexagonal or rectangular TiB2 particles (0.1-25) and AIN particles (0.1-10) and Al (rest).

Description

technical field [0001] The invention relates to an aluminum-based material in the technical field of composite materials, in particular to an aluminum-based composite material reinforced by in-situ mixed particles. Background technique [0002] The traditional aluminum matrix composite material is to add reinforcing particles to the aluminum matrix. Due to the poor wettability between the reinforcing particles and the matrix, the interface reaction is difficult to control, and the reinforcing particles are unevenly distributed in the aluminum matrix, which affects the aluminum matrix composite. Material properties. At the same time, the preparation process of using external particles is complicated and the cost is high, which is not conducive to popularization and application. Hybrid reinforcement can improve the deficiency of a single reinforcement, make various reinforcement materials complement each other with different properties, produce a hybrid effect, and increase t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/00C22C1/02C22F1/04
Inventor 陈东王浩伟马乃恒李险峰易宏展
Owner HUBEI BLUESKY ALUMINUM ALLOY