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SiC particle-enhanced aluminum based composite with high-temperature wear resistance and preparation method of SiC particle-enhanced aluminum based composite

A particle-reinforced aluminum and composite material technology, applied in the field of aluminum alloy materials, can solve problems such as softening of ordinary aluminum alloys, and achieve the effects of low production cost, avoidance of air bubbles, and simple process

Active Publication Date: 2018-12-18
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Especially in the downhill continuous braking situation, the surface temperature of the brake disc may reach 300-400°C, and ordinary aluminum alloys will soften at this temperature

Method used

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  • SiC particle-enhanced aluminum based composite with high-temperature wear resistance and preparation method of SiC particle-enhanced aluminum based composite

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A SiC particle reinforced aluminum matrix composite material with high temperature wear resistance. The matrix alloy consists of the following components by mass percentage: Si 12%, Cu 4.0%, Ni 1.0%, Mg 0.5%, Mn 0.05%, Zn 0.05 %, Ti0.05%, the balance is Al, and the volume fraction of SiC particles is 20%. The SiC particles are micron particles with a diameter of 13 μm, which are irregular in shape. The SiC particles are evenly distributed in the aluminum alloy without interfacial reaction.

[0037] The preparation method of SiC particle reinforced aluminum matrix composite material with high temperature wear resistance adopts the following steps:

[0038] (1) Melting: In the melting furnace, add industrial pure aluminum, aluminum silicon alloy, aluminum copper alloy, magnesium metal, aluminum nickel alloy, aluminum zinc alloy, aluminum manganese alloy, aluminum titanium boron according to the set alloy composition weight ratio alloy. The temperature is raised to 700°C to ...

Embodiment 2

[0047] A SiC particle reinforced aluminum matrix composite material with high temperature wear resistance. The matrix alloy is composed of the following components by mass percentage: Si 12.5%, Cu 3.5%, Ni 1.0%, Mg 0.5%, Mn 0.05%, Zn 0.05 %, Ti0.05%, the balance is Al, and the volume fraction of SiC particles is 25%. The SiC particles are micron particles with a diameter of 13 μm, which are irregular in shape. The SiC particles are uniformly distributed in the aluminum alloy without interfacial reaction.

[0048] The preparation method of SiC particle reinforced aluminum matrix composite material with high temperature wear resistance adopts the following steps:

[0049] (1) Melting: In the melting furnace, add industrial pure aluminum, aluminum silicon alloy, aluminum copper alloy, magnesium metal, aluminum nickel alloy, aluminum zinc alloy, aluminum manganese alloy, aluminum titanium boron according to the set alloy composition weight ratio alloy. The temperature is raised to 7...

Embodiment 3

[0058] A SiC particle reinforced aluminum matrix composite material with high temperature wear resistance. The matrix alloy consists of the following components by mass percentage: Si 12%, Cu 4.2%, Ni 1.5%, Mg 0.7%, Mn 0.05%, Zn 0.05 %, Ti0.05%, the balance is Al, and the volume fraction of SiC particles is 25%. The SiC particles are micron particles with a diameter of 13 μm, which are irregular in shape. The SiC particles are evenly distributed in the aluminum alloy without interfacial reaction.

[0059] The preparation method of SiC particle reinforced aluminum matrix composite material with high temperature wear resistance adopts the following steps:

[0060] (1) Melting: In the melting furnace, add industrial pure aluminum, aluminum silicon alloy, aluminum copper alloy, magnesium metal, aluminum nickel alloy, aluminum zinc alloy, aluminum manganese alloy, aluminum titanium boron according to the set alloy composition weight ratio alloy. The temperature is raised to 750°C to ...

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Abstract

The invention provides a SiC particle-enhanced aluminum based composite with high-temperature wear resistance and a preparation method of the SiC particle-enhanced aluminum based composite and belongsto the field of aluminum alloy materials. The preparation method comprises the following steps of smelting industrial pure aluminum, aluminum-silicon alloy, aluminum-copper alloy, pure magnesium, thealuminum-copper alloy, aluminum-nickel alloy, aluminum-zinc alloy, aluminum-titanium alloy and aluminum-magnesium alloy at 700-800 DEG C according to a mass ratio; performing degassing refining; performing casting at 700-750 DEG C; using vacuum smelting, stirring and casting equipment to smelt a substrate at 700-800 DEG C; adding micron-size SiC particles; performing semi-solid state stirring at550-570 DEG C; performing casting at 700-750 DEG C; and performing T6 heat treatment. For the SiC particle-enhanced aluminum based composite with the high-temperature wear resistance and the preparation method, the substrate alloy components are designed self according to an alloy phase diagram, and a proper element content is selected, so that a high temperature resistant hard phase occurs aftersubstrate alloy heat treatment, and the substrate hardness at high temperature is ensured; and meanwhile, by adding an SiC-enhanced phase, the high temperature resistance of the composite is further improved.

Description

Technical field [0001] The invention belongs to the technical field of aluminum alloy materials, and relates to a SiC particle reinforced aluminum-based composite material with high temperature wear resistance and a preparation method thereof. Background technique [0002] Automobile lightweight is the direction of future automobile industry development. The use of aluminum alloy materials to replace the widely used gray cast iron materials to prepare automobile brake discs meets the requirements of automobile lightweight. The braking performance of automobile brake discs is directly related to the safety of vehicle driving. Especially in the context of continuous braking downhill, the surface temperature of the brake disc may reach 300-400°C, and ordinary aluminum alloys will have softening problems at this temperature. Therefore, it is necessary to improve the composition of the aluminum alloy to produce an aluminum alloy material with high temperature wear resistance, so tha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/02C22C1/02C22C1/06C22C1/10C22F1/043
CPCC22C1/06C22C1/1005C22C1/1036C22C1/1094C22C21/02C22F1/043C22C1/1047
Inventor 翁真真李景全葛彬何国球刘晓山张琛乐沛雯
Owner TONGJI UNIV
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