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Graphene-rare earth-lanthanum reinforced Al-Si-Mg cast aluminum alloy and preparation method thereof

A technology for casting aluminum alloy and graphene, applied in the field of aluminum alloy, can solve the problem of high cost, achieve the effects of low casting cost, improved mechanical properties, and improved comprehensive mechanical properties

Active Publication Date: 2019-01-08
广州埃烯金属科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the relevant reports on the preparation of graphene-enhanced aluminum alloys, the amount of graphene added is above 0.1wt.%, and the cost is relatively high

Method used

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  • Graphene-rare earth-lanthanum reinforced Al-Si-Mg cast aluminum alloy and preparation method thereof
  • Graphene-rare earth-lanthanum reinforced Al-Si-Mg cast aluminum alloy and preparation method thereof
  • Graphene-rare earth-lanthanum reinforced Al-Si-Mg cast aluminum alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] This example intends to prepare 70g of Al-Si-Mg cast aluminum alloy. The raw materials and mass percentages are as follows: graphene addition is 0.003wt.%, cerium addition is 0.4wt.%, silicon 7.0wt.%, magnesium 0.43wt.%, iron 0.02wt.%, zinc 0.03wt.%, manganese 0.02wt.%, titanium 0.02wt.%, zirconium 0.03wt.%, beryllium 0.01wt.%, tin 0.03wt.%, lead 0.02wt. .%, aluminum balance; the specific preparation method steps are as follows:

[0061] Step 1: Weigh each component raw material according to weight percentage;

[0062] Step 2: Lay a layer of aluminum particles on the bottom of the crucible of the smelting furnace. The aluminum particles completely cover the bottom of the crucible without any gaps. The amount is 1 / 3 to 1 / 2 of the total amount of aluminum particles. Then, other than aluminum particles and graphene The raw material particles are laid, and finally graphene and the remaining aluminum particles are laid in sequence so that the aluminum particles completely cover ...

Embodiment 2

[0068] This example intends to prepare 70g of Al-Si-Mg cast aluminum alloy. The raw materials and mass percentages are as follows: graphene addition is 0.003wt.%, cerium addition is 0.4wt.%, silicon 7.0wt.%, magnesium 0.43wt.%, iron 0.02wt.%, zinc 0.03wt.%, manganese 0.02wt.%, titanium 0.02wt.%, zirconium 0.03wt.%, beryllium 0.01wt.%, tin 0.03wt.%, lead 0.02wt .%, aluminum balance.

[0069] The specific preparation method steps are as follows:

[0070] Step 1: Weigh each component raw material according to weight percentage;

[0071] Step 2: Lay a layer of aluminum particles on the bottom of the crucible of the smelting furnace. The aluminum particles completely cover the bottom of the crucible without gaps. The amount is 1 / 3 to 1 / 2 of the total amount of aluminum particles. Then, other than aluminum particles and graphene Spread the raw material particles, and finally layer graphene and the remaining aluminum particles in sequence, so that the aluminum particles completely cover t...

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Abstract

The invention relates to a graphene-rare earth-lanthanum reinforced Al-Si-Mg cast aluminum alloy and a preparation method thereof. The aluminum alloy comprises the following raw material in mass percent: 6.5 to 7.5% of silicon, 0.25 to 0.45% of magnesium, 0.30 to 0.50% of cerium, 0.001 to 0.005% of graphene, less than or equal to 0.05% of iron, less than or equal to 0.2% of zinc, less than or equal to 0.1% of manganese, less than or equal to 0.1% of titanium, less than or equal to 0.15% of zirconium, less than or equal to 0.1% of beryllium, less than or equal to 0.05% of tin, less than or equal to 0.1% of lead, less than or equal to 0.10% of other unavoidable elements, each of which is equal to or less than 0.03%, and the balance of aluminum. The mechanical property of the aluminum alloy is remarkably improved through uniformly adding a small amount of graphene and rare earth lanthanum in the alloy, and the comprehensive mechanical property is significantly improved when being comparedwith the prior art, so that the application range of aluminum alloy materials in the fields of automobile, aerospace and the like is greatly enlarged.

Description

Technical field [0001] The invention belongs to the technical field of aluminum alloys, and specifically relates to a graphene rare earth cerium reinforced Al-Si-Mg cast aluminum alloy and a preparation method thereof. Background technique [0002] Aluminum alloy has low density, high strength, good corrosion resistance, excellent plasticity and formability, convenient transportation, and can realize green processing. Al-Si-Mg cast aluminum alloy has good casting fluidity, small shrinkage and heat Crack sensitivity, high strength-to-weight ratio, good air-tightness and wear resistance, suitable for the manufacture of components with complex shapes, such as pump bodies, engine slider components, automobile transmissions, fuel tanks, hubs, various shells, aviation Mechanical joints and other mechanical engineering structural parts; but the traditional Al-Si-Mg cast aluminum alloy contains coarse dendritic α-(Al) primary crystal phase and coarse lath eutectic (Si), and it is used in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/02C22C1/10C22C1/02
CPCC22C1/1036C22C21/02
Inventor 刘玺张敏罗红斌吴素芹范国强
Owner 广州埃烯金属科技有限公司
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