Method for preparing aluminium based composite material enhanced by AlCuFe through extrusion casting method

An aluminum-based composite material and particle-reinforced aluminum technology, which is applied in the preparation of quasi-crystalline particle-reinforced aluminum-based composite materials and in the field of AlCuFe quasi-crystalline particle-reinforced aluminum-based composite materials prepared by squeeze casting, can solve the problem of high cost and complicated process And other problems, to achieve low cost, simple process, combined with good results

Inactive Publication Date: 2005-10-26
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process is relatively complicated and the cost is high. If the exhaust is not ideal, there will be pores in the material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The substrate is made of 6061 aluminum alloy (1.0Mg, 0.6Si, 0.3Cu, 0.2Cr), which is pressed by Al in the intermediate frequency furnace. 63 Cu 25 Fe 12 After the ingredients are smelted in the intermediate frequency furnace, the high-pressure inert gas N 2 Fully atomize the metal melt, spray water for forced cooling, the atomization process parameters are as follows: atomization air pressure is 11atm, liquid flow rate is 6kg / min, melt temperature is 1200°C during atomization, and 20-100μm is obtained after sieving quasicrystalline particles, after 12 hours of vacuum heat treatment at 850 ° C, vacuum degree 1 × 10 -4 Torr, a single quasicrystalline phase is obtained. The preparation of the prefabricated parts adopts the cold pressing method, the volume percentage of quasicrystalline particles is 15%, and the cold pressing pressure is 300 MPa. The prefabricated parts are heated and kept together with the mold. The heating temperature is 500 ° C, and the holding time is...

Embodiment 2

[0018] The substrate is made of 6061 aluminum alloy (1.0Mg, 0.6Si, 0.3Cu, 0.2Cr), which is pressed by Al in the intermediate frequency furnace. 63 Cu 25 Fe 12 After the ingredients are smelted in the intermediate frequency furnace, the high-pressure inert gas N 2 Fully atomize the metal melt, spray water for forced cooling, the atomization process parameters are as follows: atomization air pressure is 11atm, liquid flow rate is 6kg / min, melt temperature is 1200°C during atomization, and 20-100μm is obtained after sieving quasicrystalline particles, after 12 hours of vacuum heat treatment at 850 ° C, vacuum degree 1 × 10 -4 Torr, a single quasicrystalline phase is obtained. The preparation of the preform adopts the cold pressing method, the volume fraction of quasicrystalline particles is 20%, the cold pressing pressure is 300MPa, the preform and the mold are heated to 525°C, and the holding time is 90min; the aluminum alloy heating temperature is 785°C, and the holding time...

Embodiment 3

[0021] The substrate is made of 6061 aluminum alloy (1.0Mg, 0.6Si, 0.3Cu, 0.2Cr), which is pressed by Al in the intermediate frequency furnace. 63 Cu 25 Fe 12 After the ingredients are smelted in the intermediate frequency furnace, the high-pressure inert gas N 2 Fully atomize the metal melt, spray water for forced cooling, the atomization process parameters are as follows: atomization air pressure is 11atm, liquid flow rate is 6kg / min, melt temperature is 1200°C during atomization, and 20-100μm is obtained after sieving quasicrystalline particles, after 12 hours of vacuum heat treatment at 850 ° C, vacuum degree 1 × 10 -4 Torr, a single quasicrystalline phase is obtained. The preparation of the prefabricated parts adopts the cold pressing method, the volume fraction of quasicrystalline particles is 25%, the cold pressing pressure is 300MPa, the prefabricated parts and the mold are heated to 550°C, and the holding time is 120min; the aluminum alloy heating temperature is 80...

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Abstract

A method of preparing AlCuFe Quasicrystalline Particles Reinforced Al base Composites. The present invention adopts the method of high pressure inert gases atomization to prepare the powder of AlCuFe. The Quasicrystalline Particles which is 20 - 100 micron after sift out, is heat treated in order to get single phase of Quasicrystalline Press it in cold, and then press it into prefabrication in the ratio of design. Heat preservation the prefabrication and die, and fusion the aluminium alloy at the same time. Press and penetrate it after heat preservation in order to prepare Quasicrystalline Particles Reinforced Al base Composites. The present invention has simple technics and low cost.

Description

technical field [0001] The invention relates to a method for preparing an aluminum-based composite material reinforced with quasi-crystal particles, in particular to a method for preparing an AlCuFe quasi-crystalline particle-reinforced aluminum-based composite material by a squeeze casting method, which belongs to the field of composite material preparation. Background technique [0002] Due to the inherent brittleness of its structural characteristics, quasicrystals are not suitable for use as structural materials alone. However, quasicrystalline materials have the characteristics of high hardness and low friction coefficient, and can be used as reinforcements to prepare composite materials. At present, the methods of quasicrystal-reinforced aluminum matrix composites mainly include stirred casting, hot pressing, and in-situ reaction. [0003] After searching the prior art, it is found that the U.S. patent application number is: USO5851317, the application date is: Dec.22...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/04
Inventor 严峰徐洲李小平李卫红
Owner SHANGHAI JIAO TONG UNIV
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