A kind of preparation method of aluminum matrix composite material

An aluminum-based composite material and a composite material technology are applied in the field of preparation of aluminum-based composite materials, which can solve problems such as failure to achieve dispersion strengthening and particle agglomeration, and achieve the effects of improving surface wettability, low melting point, and increasing strength.

Active Publication Date: 2020-07-14
NORTHEASTERN UNIV LIAONING
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the reinforcement is directly added to the matrix melt, the particles will agglomerate due to poor wettability, and cannot be well dispersed in the matrix, thus failing to achieve the effect of dispersion strengthening.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of preparation method of aluminum matrix composite material
  • A kind of preparation method of aluminum matrix composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Prepare aluminum ingots as raw materials; prepare salt flux and reinforcement; the salt flux is a mixture of potassium chloride, sodium chloride and cryolite, wherein potassium chloride accounts for 35% of the total mass of the salt flux, and sodium chloride accounts for 35% of the total mass of the salt flux. 30% of the total mass of the flux, and cryolite accounts for 35% of the total mass of the salt flux; the reinforcement is a rare earth oxide of La 2 o 3 Particles; reinforcement is 5% of the total volume of raw materials; reinforcement is 10% of the total volume of salt flux;

[0045] Put the salt flux in a clay crucible, heat it to 973K to make a salt flux melt; add the reinforcement to the salt flux melt, add all the reinforcements in 3 times, and add 50% of the total mass of the reinforcement each time. % or less, stir to disperse the reinforcement evenly to make a liquid-solid mixture; the stirring speed is 100r / min, and the time is 5min;

[0046] Pour the l...

Embodiment 2

[0053] Method is with embodiment 1, and difference is:

[0054] (1) In the salt flux, potassium chloride accounts for 20% of the total mass of the salt flux, sodium chloride accounts for 50% of the total mass of the salt flux, and cryolite accounts for 30% of the total mass of the salt flux;

[0055] (2) The reinforcement is carbide SiC particles;

[0056] (3) The reinforcement is 1% of the total volume of the raw material; the reinforcement is 3% of the total volume of the salt flux;

[0057] (4) Put the salt flux in a graphite crucible and heat it to 993K to make a salt flux melt; all reinforcements are added in 4 times; the stirring speed is 200r / min, and the time is 2min; the liquid-solid mixture is poured into a graphite crucible at room temperature cool down;

[0058] (5) Preheat the melting crucible to 593K; melt at 953K;

[0059] (6) First crush the precursor to a particle size ≤ 5cm, then put it into the raw material melt at a temperature of 953K, stir to disperse ...

Embodiment 3

[0062] (1) Prepare aluminum ingots and other metal components as raw materials; the other metal components are magnesium ingots, accounting for 8% of the total mass of raw materials; potassium chloride accounts for 50% of the total mass of salt flux in the salt flux, and sodium chloride accounts for 50% of the total mass of the salt flux. 30% of the total mass of the flux, and cryolite accounts for 20% of the total mass of the salt flux;

[0063] (2) The reinforcement is elemental metal Ni;

[0064] (3) The reinforcement is 10% of the total volume of the raw material; the reinforcement is 15% of the total volume of the salt flux;

[0065] (4) Put the salt flux in a graphite crucible and heat it to 1013K to make a salt flux melt; add all reinforcements in 5 times; stir at a speed of 150r / min for 4min; pour the liquid-solid mixture into a graphite crucible at room temperature cool down;

[0066] (5) Put aluminum ingots and other metal components together in an iron crucible, m...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
diameteraaaaaaaaaa
lengthaaaaaaaaaa
Login to view more

Abstract

Disclosed is a method for preparing an aluminum-based composite material, wherein same is carried out according to the following steps: (1) preparing an aluminum ingot as a raw material and preparing a salt flux and a reinforcement; (2) placing the salt flux in a crucible and heating same to prepare a salt flux melt, adding the reinforcement thereto and stirring same to prepare a liquid-solid mixture; (3) pouring same into a normal temperature crucible for cooling to obtain a precursor; (4) preheating a smelting crucible to 573-673 K, wherein the raw material is added and melted to form a raw material melt; (5) placing the precursor in the raw material melt and stirring same, and then standing at 993-1023 K to form a dross and a composite material melt; and (6) lowering the temperature to 983±5 K after the removal of the dross, and then casting same. The method of the present invention has a simple process, a low cost and can greatly improve the strength of the aluminum-based composite material, and the method can be used to prepare an aluminum-based composite material structural component with a large volume, and can achieve automatic production, and this is of great significance to the development of the aluminum industry.

Description

technical field [0001] The invention belongs to the technical field of metal-based composite material preparation, and in particular relates to a method for preparing aluminum-based composite material. Background technique [0002] Aluminum and its aluminum alloys have the advantages of low density, high strength and good plasticity, and are widely used in aerospace, automobile and other fields. With the advancement of science and technology, there are higher requirements for the mechanical properties of aluminum and its alloys; therefore, chemically stable reinforcements are often added to improve the mechanical properties of the alloy and other excellent comprehensive properties. [0003] Compared with traditional aluminum and its alloys, aluminum matrix composites have some special properties and other good comprehensive properties in addition to excellent mechanical properties; at present, the methods for preparing composite materials mainly include traditional mechanica...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/10C22C1/03C22C1/06C22C21/00C22C47/08C22C49/06
CPCC22C1/06C22C1/1036C22C21/00C22C47/08C22C49/06
Inventor 乐启炽任良李小强程春龙赵大志蒋燕超
Owner NORTHEASTERN UNIV LIAONING
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap