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Preparing method of in-situ synthesized aluminum matrix composite inoculant

An aluminum-based composite material, an in-situ self-generating technology, applied in the field of aluminum-based alloys, can solve the problems of aggregation and precipitation, large particle size, and unsatisfactory dispersion or dispersion of enhanced particles, so as to achieve the effect of energy saving and cost.

Active Publication Date: 2016-09-21
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for preparing an inoculant for in-situ authigenic aluminum-based composite materials, which uses in-situ authigenic reaction method and rapid solidification technology to prepare thin strip-shaped CeB 6 / Al nanometer in-situ aluminum matrix composite inoculant method, this method overcomes the reinforcement particles in the inoculant in the prior art that cannot be dispersed on the matrix or the degree of dispersion is not ideal, the aggregation and precipitation of particles in the melt and the Large particle size defects

Method used

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  • Preparing method of in-situ synthesized aluminum matrix composite inoculant

Examples

Experimental program
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Effect test

Embodiment 1

[0031] First step, ingredients:

[0032] Weigh 11g of commercially available Al-2.8%B master alloy and 3.5g of commercially available Al-20.2%Ce master alloy for batching, and the above percentages are percentages by weight;

[0033] In the second step, the alloy is smelted to obtain a bulk Al-B-Ce master alloy:

[0034] Put all the ingredients weighed in the first step into the crucible of the MZG series high vacuum induction melting furnace for melting, the vacuum degree is 5×10 -3 Pa, heat the Al-2.8%B master alloy and Al-20.2%Ce master alloy to the melting temperature of 1600K, and keep it warm for 6 minutes. Ce master alloy, the bulk alloy thus prepared is cut with an electric spark cutting machine, and a sample with a length of 1 cm, a width of 1 cm, and a thickness of 0.5 cm is cut out, and the samples after cutting are respectively placed at 320#, 400#, 600# water-grinding paper for grinding, and then use alcohol to wash away impurities on the surface of the sample b...

Embodiment 2

[0039] First step, ingredients:

[0040] Weighing 22g of commercially available Al-2.8%B master alloy and 7g of commercially available Al-20.2%Ce master alloy for batching, the above percentages are percentages by weight;

[0041] In the second step, the alloy is smelted to obtain a bulk Al-B-Ce master alloy:

[0042] Put all the ingredients weighed in the first step into the crucible of the MZG series high vacuum induction melting furnace for melting, the vacuum degree is 5×10 -3 Pa, heat the Al-2.8%B master alloy and Al-20.2%Ce master alloy to the melting temperature of 1600K, and keep it warm for 6 minutes. Ce master alloy, the block alloy that will make is cut with electric spark cutting machine, and cuts out the sample that is 1cm in length, 1cm in width, and 0.5cm in thickness. Grind on #, 800#, 1200# and 2000# water abrasive paper, then perform mechanical polishing, use alcohol to wash away impurities on the surface of the sample through ultrasonic vibration, and use ...

Embodiment 3

[0046] First step, ingredients:

[0047] Weighing 44g of commercially available Al-2.8%B master alloy and 14g of commercially available Al-20.2%Ce master alloy for batching, the above percentages are percentages by weight;

[0048] In the second step, the alloy is smelted to obtain a bulk Al-B-Ce master alloy:

[0049] Put all the ingredients weighed in the first step into the crucible of the MZG series high vacuum induction melting furnace for melting, the vacuum degree is 5×10 -3 Pa, heat the Al-2.8%B master alloy and Al-20.2%Ce master alloy to the melting temperature of 1600K, and keep it warm for 6 minutes. Ce master alloy, the block alloy that will make is cut with electric spark cutting machine, and cuts out the sample that is 1cm in length, 1cm in width, and 0.5cm in thickness. Grind on #, 800#, 1200# and 2000# water abrasive paper, then perform mechanical polishing, use alcohol to wash away impurities on the surface of the sample through ultrasonic vibration, and use...

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Abstract

The invention provides a preparing method of an in-situ synthesized aluminum matrix composite inoculant and relates to an aluminum-based alloy. The preparing method is a method for making an ribbon-shaped CeB6 / Al nanometer in-situ aluminum matrix composite inoculant by adopting an in-situ synthesis reaction process and a rapid solidification technology. The method comprises the following steps: weighing required quantities of commercial Al-2.8%B intermediate alloy and commercial Al-20.2%Ce intermediate alloy, and mixing the materials according to a ratio that the ratio by weight of the Al-2.8%B intermediate alloy to the Al-20.2%Ce intermediate alloy is 22:7; putting all of the materials into a crucible of a high-vacuum induction melting furnace and smelting the materials so as to make a blocky Al-B-Ce intermediate alloy; and carrying out rapid solidification treatment so as to make an in-situ synthesized ribbon-shaped CeB6 / Al nanometer in-situ aluminum matrix composite inoculant. The method overcomes defects in the prior art that reinforced particles in the inoculant cannot be distributed on a matrix in a dispersion manner or the dispersion degree is not ideal, the particles are precipitated in melt in an aggregation manner and the sizes of the particles are large.

Description

technical field [0001] The technical solution of the invention relates to an aluminum-based alloy, in particular to a method for preparing an inoculant for an in-situ self-generated aluminum-based composite material. Background technique [0002] Adding inoculants to aluminum and aluminum alloy melts is one of the recognized methods for transforming grains from columnar grains to equiaxed grains. Due to its good economy, the amount of inoculant added is very small, generally adding a few thousandths to a few percent of the matrix. Therefore, this method has been widely used in industrial production in the past few decades. However, these inoculants are prepared by traditional methods, such as powder metallurgy, spray molding and various casting techniques, etc., and then the prepared reinforcing phases, such as SiC, B 4 C. Al 2 o 3 Adding such particles to the matrix material in the molten state or powder state, the reinforcement phase added in this way is called externa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C1/03C22C32/00
CPCC22C1/026C22C1/03C22C21/00C22C32/0073
Inventor 崔春翔刘水清王新赵立臣
Owner HEBEI UNIV OF TECH
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