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Method for producing high-temperature resistant high-strength high-modulus aluminium matrix composite

An aluminum-based composite material, high-strength technology, used in temperature control, metal extrusion control equipment, metal rolling and other directions, can solve the problems of high cost, complex process, difficult to achieve large-scale production, etc. The effect of simple production process and low price of raw materials

Inactive Publication Date: 2010-06-16
苏州有色金属研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its preparation method is to use titanium diboride reinforcement particles and aluminum particles as raw materials, sinter and extrude, the process is complicated, the cost is high, and it is difficult to realize large-scale production

Method used

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  • Method for producing high-temperature resistant high-strength high-modulus aluminium matrix composite
  • Method for producing high-temperature resistant high-strength high-modulus aluminium matrix composite
  • Method for producing high-temperature resistant high-strength high-modulus aluminium matrix composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] High temperature resistant, high strength and high modulus aluminum matrix composites were prepared by mixed salt reaction method, and the composition mass percentages were Cu 4.3, Mg 1.5, Mn 0.6, Zr 0.15, TiB 2 10%, the balance is Al.

[0026] Its preparation process: use a high-purity graphite crucible, after the aluminum ingot is melted, add Mg ingot at 700°C, slag, refine, and degas at 740°C, heat up to 800°C, use a high-purity graphite stirrer to stir the aluminum melt, add Dry K 2 TiF 6 、KBF 4 , KAlF 6 and MgF 2 Mixed salt reaction, the reaction time is 30min, remove the residual salt of the reaction, add Al-Cu master alloy, Al-Mn master alloy at 750°C, add Al-Zr master alloy, aluminum foil-wrapped Mg ingot at 700°C, stir evenly, and heat up Slagging, refining, and degassing at 750°C, standing still for 15 minutes, adding Al-Ti-B wire, stirring evenly, and casting into ingots. The ingot is homogenized at a temperature of 490°C for 20 hours, and the wagon is ...

Embodiment 2

[0030]High temperature resistant, high strength and high modulus aluminum matrix composites were prepared by mixed salt reaction method, and the composition mass percentages were Cu 4.9, Mg 1.2, Mn 0.3, Zr 0.25, TiB 2 15%, the balance is Al.

[0031] Its preparation process: use a high-purity graphite crucible, after the aluminum ingot is melted, add Mg ingot at 720°C, slag, refine, and degas at 750°C, heat up to 950°C, use a high-purity graphite stirrer to stir the aluminum melt, add Dry K 2 TiF 6 、KBF 4 , KAlF 6 and MgF 2 Mixed salt reaction, the reaction time is 30min, remove the residual salt of the reaction, add Al-Cu master alloy, Al-Mn master alloy at 750°C, add Al-Zr master alloy, aluminum foil-wrapped Mg ingot at 720°C, stir evenly, and heat up Slagging, refining, and degassing at 780°C, standing still for 15 minutes, adding Al-Ti-B wire, stirring evenly, and casting into ingots. The ingot is homogenized at a temperature of 500°C for 15 hours, and the wagon is p...

Embodiment 3

[0033] High temperature resistant, high strength and high modulus aluminum matrix composites were prepared by mixed salt reaction method, and the composition mass percentages were Cu 3.8, Mg 1.8, Mn 0.9, Zr 0.1, TiB 2 0.1%, the balance is Al.

[0034] Its preparation process: use a high-purity graphite crucible, after the aluminum ingot is melted, add Mg ingot at 670°C, slag, refine, and degas at 720°C, heat up to 700°C, use a high-purity graphite stirrer to stir the aluminum melt, add Dry K 2 TiF 6 、KBF 4 , KAlF 6 and MgF 2 Mixed salt reaction, the reaction time is 30min, remove the residual salt of the reaction, add Al-Cu master alloy, Al-Mn master alloy at 700°C, add Al-Zr master alloy, aluminum foil-wrapped Mg ingot at 700°C, stir evenly, and heat up Slagging, refining, and degassing at 730°C, standing still for 15 minutes, adding Al-Ti-B wire, stirring evenly, and casting into ingots. The ingot is homogenized at a temperature of 470°C for 28 hours, and the wagon is ...

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Abstract

The invention provides a method for producing high-temperature resistant high-strength high-modulus aluminium matrix composite, comprising the following steps: adding a pure industrial aluminum ingot to a crucible, heating the crucible to melt the pure aluminum ingot, adding an Mg ingot to the melted pure aluminum ingot, crashing the residues, refining the melted pure aluminum ingot, removing gases in the melted pure aluminum ingot, covering the melted pure aluminum ingot with covering agent, adjusting the temperature of the melted pure aluminum ingot, stirring the melted pure aluminum ingot, adding the mixed salt of K2TiF6, KBF4, KAlF6 and MgF2 which are dried at high temperature to the melted pure aluminum ingot for reaction, cleaning the salt left after the reaction, adding and stirring evenly Al-Cu intermediate alloy and Al-Mn intermediate alloy to the mixture, adding and stirring evenly Al-Zr intermediate and an Mg ingot to the mixture, adjusting the temperature of the mixture, crashing the residues, refining the mixture, removing gases in the mixture, standing the mixture, adding and stirring an Al-Ti-B wire to the mixture and casing the mixture into an ingot, homogenizing the ingot, lathing the shell of the ingot and milling the surface of the ingot, extruding the ingot into a required section or rolling the ingot into a required plate, and carrying out solid solution treatment and ageing treatment for the required section or the required plate. The aluminium matrix composite produced with the method has the high-temperature resistant characteristic and the mechanical performances of high strength and high modulus.

Description

technical field [0001] The invention relates to a method for preparing a metal-based composite material, in particular to a method for preparing an aluminum-based composite material with high temperature resistance, high strength and high modulus. Background technique [0002] Aluminum-based composite materials have the advantages of light weight, high specific strength, high specific stiffness and shear strength, low thermal expansion coefficient, good thermal stability, thermal conductivity, electrical conductivity, and corrosion resistance. It is an ideal material with broad application prospects. [0003] Through literature search, it is found that the patent application 200710190526.0 discloses an aluminum-copper alloy material and its casting and heat treatment process. Alloy materials have high strength and excellent plasticity, but it is difficult to meet the high temperature resistance, high strength and high modulus requirements of aviation, aerospace, high-tech a...

Claims

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Application Information

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IPC IPC(8): B23P17/00C22C21/00C22C1/03C22F1/04B21C23/02B21C31/00B21B1/22B21B37/74B21B37/16
Inventor 张建平乐永康毛建伟
Owner 苏州有色金属研究院有限公司
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