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Amorphous alloy reinforced aluminum matrix composite and preparation method thereof

A technology of aluminum-based composite materials and amorphous alloys, which is applied in the field of composite material preparation, can solve problems such as interface peeling, adverse interface reactions, and decreased mechanical properties of composite materials, and achieve good interface state, good density and good mechanical properties , the effect of increasing density and hardness

Inactive Publication Date: 2016-07-27
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these particles have many disadvantages as reinforcements. For example, adverse interfacial reactions will occur at the interface between the matrix and the reinforcement, which will cause peeling problems at the interface, and will cause a decline in the density and mechanical properties of the composite material.

Method used

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  • Amorphous alloy reinforced aluminum matrix composite and preparation method thereof
  • Amorphous alloy reinforced aluminum matrix composite and preparation method thereof
  • Amorphous alloy reinforced aluminum matrix composite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] (1) Preparation of amorphous alloy powder: weigh the Al powder and Fe powder with a purity of ≧99.9 according to the atomic percentage of 85:15, put them in a ball mill jar, add stearic acid as a protective agent, vacuumize the ball mill jar, and fill it with argon , and then mechanically alloyed for 200h at a speed of 350rpm and a ball-to-material ratio of 15:1 to obtain Al 85 Fe 15 Amorphous alloy powder; the XRD pattern of amorphous alloy is shown in figure 1 , it can be seen from the figure that the amorphous phase has appeared after 200 hours. The crystallization temperature diagram of amorphous alloy is shown in figure 2 , as can be seen from the figure, its initial crystallization temperature is 1209K.

[0045] (2) Powder mixing: Al 85 Fe 15 Amorphous alloy powder and grade 2024 aluminum alloy powder are put into ball milling tank according to the volume ratio of 1:4. The ball milling tank is evacuated and filled with argon, and then ball milled and mixed f...

Embodiment 2

[0048] (1) Preparation of amorphous alloy powder: weigh the Al powder and Fe powder with a purity of ≧99.9 according to the atomic percentage of 85:15, put them in a ball mill jar, add stearic acid as a protective agent, vacuumize the ball mill jar, and fill it with argon , and then mechanically alloyed for 160h at a speed of 400rpm and a ball-to-material ratio of 15:1 to obtain Al 85 Fe 15 Amorphous alloy powder, its XRD pattern and figure 1 Similarly, the initial crystallization temperature is 1207K;

[0049] (2) Powder mixing: Al 85 Fe 15 Amorphous alloy powder and aluminum alloy powder of grade 6061 are put into ball milling tank according to the volume ratio of 2:3, the ball milling tank is evacuated and filled with argon, and then the powder is mixed for 10 hours under the conditions of rotating speed 350rpm and ball-to-material ratio 15:1. get mixed material;

[0050] (3) Vacuum hot-press sintering: put the mixed material into a cylindrical graphite abrasive tool w...

Embodiment 3

[0052] (1) Preparation of amorphous alloy powder: Weigh the Al powder and Fe powder with a purity of ≧99.9 according to the atomic percentage of 85:15, put them in a ball mill jar, add a protective agent, vacuumize the ball mill jar, fill it with argon, and then 350rpm, mechanical alloying for 180h under the condition of ball-to-material ratio 20:1, to obtain Al 85 Fe 15 Amorphous alloy powder, its XRD pattern and figure 1 Similarly, the initial crystallization temperature is 1209K;

[0053] (2) Powder mixing: Al 85 Fe 15 Amorphous alloy powder and aluminum alloy powder of grade 6061 are put into a ball mill tank according to the volume ratio of 3:7, the ball mill tank is evacuated and filled with argon, and then the powder is mixed for 10 hours at a speed of 350 rpm and a ball-to-material ratio of 20:1. get mixed material;

[0054] (3) Vacuum hot pressing sintering: put the mixture into a cylindrical graphite abrasive tool with a diameter of 45mm, put it in a vacuum hot ...

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Abstract

The invention discloses an amorphous alloy reinforced aluminum matrix composite and a preparation method thereof. The composite takes an aluminum matrix amorphous alloy as a reinforcement and takes an aluminum alloy as a matrix, and the aluminum matrix amorphous alloy is uniformly dispersed in the aluminum alloy. The preparation method is simple to operate, the temperature of a preparation process is low, and the composite can be prepared through a simple hot-pressed sintering process. The interface bonding strength of the aluminum matrix amorphous alloy and the aluminum alloy matrix is high, the interface state is good, and aluminum matrix amorphous alloy particles are uniformly distributed in the matrix and not easy to aggregate, so that the prepared composite is high in density and good in mechanical property, that is, the strength and the hardness are high.

Description

technical field [0001] The invention relates to an aluminum-based composite material reinforced by an amorphous alloy and a preparation method thereof, belonging to the technical field of composite material preparation. Background technique [0002] Particle reinforced aluminum matrix composites have excellent properties such as high specific strength, high specific modulus, wear resistance and good dimensional stability. As a new type of structural material, it has broad application prospects in aerospace, automotive, communication industries and other fields, and can also be used as an additive for advanced coatings. However, the poor shape and toughness of particle-reinforced aluminum matrix composites limit their application in structural materials. How to improve its shape and toughness has always been the goal pursued by researchers. [0003] Particle-reinforced aluminum matrix composites are composed of particle reinforcement and matrix. Currently, the widely used r...

Claims

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Application Information

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IPC IPC(8): C22C1/04C22C21/00
CPCB22F2998/10B22F2999/00C22C1/0416C22C21/00B22F2009/043B22F1/0003B22F2003/145B22F2201/10B22F2201/20
Inventor 王艳张岚翔左敏王同洋
Owner UNIV OF JINAN
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