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Aluminum intermediate alloy containing multi-scale mixed particles and preparation method thereof

An aluminum master alloy and multi-scale technology, applied in the field of non-ferrous metal material preparation, can solve problems such as thermal cracks, small thermal expansion coefficient, thermal conductivity, linear expansion coefficient and other thermal physical properties.

Pending Publication Date: 2021-09-10
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The melting temperature of the aluminum master alloy in the above scheme does not exceed 800°C. The aluminum alloy is made of the aluminum master alloy and the reinforcement. The performance of the aluminum alloy material depends on factors such as the characteristics, content and distribution of the matrix alloy and the

Method used

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  • Aluminum intermediate alloy containing multi-scale mixed particles and preparation method thereof
  • Aluminum intermediate alloy containing multi-scale mixed particles and preparation method thereof
  • Aluminum intermediate alloy containing multi-scale mixed particles and preparation method thereof

Examples

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Effect test

Embodiment 1

[0027] An aluminum master alloy containing multi-scale mixed particles, the aluminum master alloy contains 0.1-6.4% by mass of submicron TiB2 particles (in this implementation, the mass percentage of submicron TiB2 particles is 6.4%); nanometer TiC particles 4 The mass percentage is 0.1-3% (nano TiC particle 4 is 1% in this embodiment); the rest is aluminum and impurities.

[0028] The impurities described in this example are inevitable, mainly because impurities are unavoidable in the smelting of alloys, just as in steel and pig iron, only the difference in carbon content leads to different toughness, so impurities are inevitable Avoided. as attached figure 1 As shown, the device for preparing an aluminum master alloy containing multi-scale mixed particles includes a melting furnace 1 and a graphite crucible 2 , and the melting furnace 1 is used to heat the graphite crucible 2 .

[0029] A method for preparing an aluminum master alloy containing multi-scale mixed particles,...

Embodiment 2

[0039] The difference between this example and Example 1 is that the aluminum master alloy contains 3.2% by mass of submicron TiB2 particles 3; 2% by mass of nano-TiC particles 4; and the rest is aluminum and impurities.

Embodiment 3

[0041] The difference between this example and Example 1 is that the aluminum master alloy contains 2.9% by mass of submicron TiB2 particles 3; 1.5% by mass of nano-TiC particles 4; the rest is aluminum and impurities.

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Abstract

The invention belongs to the field of non-ferrous metal material preparation, and particularly relates to an aluminum intermediate alloy containing multi-scale mixed particles and a preparation method thereof. The preparation method comprises the steps that mixed salt of K2TiF6, KBF4, KCl, BaCl2 and the like which are evenly mixed with nano TiC particles is poured into aluminum melt, submicron TiB2 particles are generated through in-situ reaction in the aluminum melt, meanwhile, the nano TiC particle fused salt assists precipitation into the aluminum melt, and the aluminum intermediate alloy containing evenly-dispersed submicron TiB2 and nano TiC multi-scale mixed particles is prepared through a vibration external field dispersion mode. The method is simple in process, high in preparation efficiency and suitable for large-scale industrial production of the multi-scale mixed particle modified aluminum alloy material, aluminum alloy solidification grain structures can be remarkably refined, aluminum alloy solidification hot cracks are reduced, and the good popularization value is achieved.

Description

technical field [0001] The invention belongs to the field of preparation of nonferrous metal materials, and in particular relates to an aluminum master alloy containing multi-scale mixed particles and a preparation method thereof. Background technique [0002] Some simple substances are made into alloys to make it easy to add to the alloy, to solve the problems of burning, high melting point alloys are not easy to melt into and other special alloys that have little effect on raw materials are called master alloys. Aluminum master alloys are based on aluminum. Alloys made by melting with other metals or non-metals at elevated temperatures are used to adjust and control the chemical composition and structure of cast aluminum alloys or deformed aluminum alloys. [0003] Aluminum alloy has good electrical and thermal conductivity, high strength-to-mass ratio, corrosion resistance and damage resistance, and is widely used in aerospace, rail transit, automobiles, ships, pressure v...

Claims

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Application Information

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IPC IPC(8): C22C32/00C22C21/00C22C1/10
CPCC22C32/0047C22C21/00C22C1/1036C22C1/1052
Inventor 陈继强周子翔钟世标韩双文锋管仁国齐亮
Owner JIANGXI UNIV OF SCI & TECH