A kind of aluminum base powder metallurgy composite material and preparation method thereof

A technology for powder metallurgy and composite materials, applied in the field of powder metallurgy composite materials and their preparation, can solve the problems of low elastic modulus, tensile strength and elongation of aluminum alloys, and achieve the promotion of interface bonding, wide application range and comprehensive performance. good effect

Active Publication Date: 2016-09-07
SHANGHAI MINJIAN ALUMINUM CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Due to the needs of development, higher requirements have been put forward for the mechanical properties of aluminum alloys, but the elastic modulus, tensile strength and elongation of existing aluminum alloys are low and cannot meet the current requirements. Therefore, it is proposed to use powder metallurgy technology to prepare mechanical properties. Good Performance Aluminum Matrix Composite

Method used

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  • A kind of aluminum base powder metallurgy composite material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0020] An aluminum-based powder metallurgy composite material is composed of the following substances in weight percentage: carbon nanotube 0.6%, silicon 6%, bismuth 0.1%, manganese 3.5%, magnesium 1.2%, titanium 1.5%, chromium 0.5%, boron oxide 0.3% , Beryllium 0.2%, the balance is aluminum.

[0021] A method for preparing an aluminum-based powder metallurgy composite material, comprising the following steps:

[0022] a: Weigh silicon, bismuth, manganese, magnesium, titanium, chromium, boron oxide, beryllium and aluminum according to the weight percentage, and mix them uniformly for 12 hours with a mechanical ball mill mixer to form a uniform mixed powder for later use;

[0023] b: put the carbon nanotubes into absolute ethanol and ultrasonically shake for 15 minutes to fully stir, then add to the mixed powder obtained in step a, and stir for another 20 minutes to obtain a uniformly stirred mixture;

[0024] C, the mixture that step b obtains is 120kgf / cm under pressure 2 a...

Embodiment 2

[0026] An aluminum-based powder metallurgy composite material is composed of the following substances in weight percentage: carbon nanotube 4.8%, silicon 8.5%, bismuth 0.2%, manganese 4.5%, magnesium 2.5%, titanium 2.7%, chromium 1.4%, boron oxide 1% , Beryllium 0.5%, the balance is aluminum.

[0027] A method for preparing an aluminum-based powder metallurgy composite material, comprising the following steps:

[0028] a: Weigh silicon, bismuth, manganese, magnesium, titanium, chromium, boron oxide, beryllium and aluminum according to weight percentage, and mix them uniformly with a mechanical ball mill mixer for 14 hours to form a uniform mixed powder for later use;

[0029] b: put the carbon nanotubes into absolute ethanol and ultrasonically shake for 18 minutes to fully stir, then add to the mixed powder obtained in step a, and stir for another 25 minutes to obtain a uniformly stirred mixture;

[0030] C, the mixture that step b obtains is 122kgf / cm under pressure 2 and s...

Embodiment 3

[0032] An aluminum-based powder metallurgy composite material is composed of the following substances in weight percentage: carbon nanotube 1%, silicon 7%, bismuth 0.12%, manganese 3.7%, magnesium 1.5%, titanium 1.8%, chromium 0.8%, boron oxide 0.5% , Beryllium 0.3%, the balance is aluminum.

[0033] A method for preparing an aluminum-based powder metallurgy composite material, comprising the following steps:

[0034] a: Weigh silicon, bismuth, manganese, magnesium, titanium, chromium, boron oxide, beryllium and aluminum according to weight percentage, and uniformly mix them with a mechanical ball mill mixer for 16 hours to form a uniform mixed powder for later use;

[0035] b: put the carbon nanotubes into absolute ethanol and ultrasonically shake for 22 minutes to fully stir, then add to the mixed powder obtained in step a, and stir for another 35 minutes to obtain a uniformly stirred mixture;

[0036] C, the mixture that step b obtains is 128kgf / cm under pressure 2 and si...

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Abstract

The invention discloses an aluminum-base powder metallurgy composite material and a preparation method thereof. The composite material is composed of the following substances in percentage by weight: 0.6%-4.8% of carbon nanotube, 6%-8.5% of silicon, 0.1%-0.2% of bismuth, 3.5%-4.5% of manganese, 1.2%-2.5% of magnesium, 1.5%-2.7% of titanium, 0.5%-1.4% of chromium, 0.3%-1% of boron oxide, 0.2%-0.5% of beryllium and the balance of aluminum. The preparation method comprises the following steps: a. uniformly mixing with a mechanical ball milling mixer; b. sufficiently stirring by ultrasonic oscillation; and c. sintering to obtain the aluminum-base powder metallurgy composite material. The prepared aluminum-base powder metallurgy composite material has the advantages of high elastic modulus, high tensile strength, high elongation percentage, favorable comprehensive properties and longer service life. The method has the advantages of wide applicability, energy saving, time saving and reliable and efficient technique, and is beneficial to large-scale production.

Description

technical field [0001] The invention relates to a powder metallurgy composite material and a preparation method thereof, in particular to an aluminum-based powder metallurgy composite material and a preparation method thereof. Background technique [0002] Due to the characteristics of low density, high strength and good plasticity, aluminum alloy is widely used in high-tech fields such as national economy, aerospace, national defense and military industry. As countries all over the world pay more and more attention to the problems of energy saving, emission reduction and environmental pollution, higher requirements are put forward for the mechanical properties of aluminum alloys. [0003] Powder metallurgy is a process technology for producing metal or using metal powder as raw material, forming and sintering to manufacture metal materials, composite materials and various types of products. [0004] Due to the needs of development, higher requirements have been put forward...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/02C22C1/05
Inventor 方仁聪
Owner SHANGHAI MINJIAN ALUMINUM CO LTD
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