A kind of graphene reinforced al-si-mg cast aluminum alloy and preparation method thereof

A technology of casting aluminum alloy and graphene, applied in the field of aluminum alloy, can solve the problem of high cost, achieve the effect of low cost, avoid complex process flow, and improve comprehensive mechanical properties

Active Publication Date: 2021-02-12
广州埃米石墨烯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A kind of graphene reinforced al-si-mg cast aluminum alloy and preparation method thereof
  • A kind of graphene reinforced al-si-mg cast aluminum alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] This example plans to prepare 60g of graphene-enhanced Al-Si-Mg cast aluminum alloy, wherein the amount of graphene added is 0.003wt.%, and the weight percentages of other raw materials are: silicon 7.0wt.%, Mg 0.40wt.%, 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 steps are as follows:

[0035] Step 1: take each raw material by weight percentage;

[0036] Step 2: Put the graphene and aluminum alloy raw materials into the crucible: spread a layer of aluminum particles on the bottom of the crucible, the aluminum particles are completely covered without gaps, and the amount is about 1 / 4 to 1 / 3 of the total amount of aluminum particles; Then spread other raw materials except aluminum particles and graphene, then put graphene, and finally spread the remaining aluminum particles into the crucible so that the aluminum particles completely cover the graphene, and the la...

Embodiment 2

[0042] This example intends to prepare 60g of graphene-enhanced Al-Si-Mg cast aluminum alloy, in which the amount of graphene added is 0.005wt.%, and the mass percentages of other raw materials are: silicon 7.0wt.%, Mg 0.40wt.%, zinc 0.03 wt.%, manganese 0.02wt.%, titanium 0.02wt.%, zirconium 0.03wt.%, beryllium 0.01wt.%, tin 0.03wt.%, lead 0.02wt.%, aluminum balance; the specific steps are as follows:

[0043] Step 1: take each raw material by weight percentage;

[0044] Step 2: Put graphene and aluminum alloy raw materials into the crucible: spread a layer of aluminum particles on the bottom of the crucible, the aluminum particles are completely covered without gaps, and the amount is about 1 / 4 to 1 / 3 of the total amount of aluminum particles, Then spread other raw materials except aluminum particles and graphene, then put graphene, and finally spread the remaining aluminum particles into the crucible so that the aluminum particles completely cover the graphene;

[0045] St...

Embodiment 3

[0050] This example intends to prepare 60g of graphene-enhanced Al-Si-Mg cast aluminum alloy, wherein the amount of graphene added is 0.007wt.%, and the weight percentages of other raw materials are: silicon 7.0wt.%, Mg 0.40wt.% , 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 steps are as follows :

[0051] Step 1: take each raw material by weight percentage;

[0052] Step 2: Put graphene and aluminum alloy raw materials into the crucible: spread a layer of aluminum particles on the bottom of the crucible, the aluminum particles are completely covered without gaps, and the amount is about 1 / 4 to 1 / 3 of the total amount of aluminum particles, Then spread other raw materials except aluminum particles and graphene, then put graphene, and finally spread the remaining aluminum particles into the crucible so that the aluminum particles completely cover the graphene;

[0053]...

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Abstract

The invention relates to a graphene-reinforced Al-Si-Mg cast aluminum alloy and a preparation method thereof. The chemical composition of the aluminum alloy by mass percentage is: Si 6.0-8.0%, Mg 0.20-0.45%, graphene 0.003 ~0.007%, Zn≤0.2%, Mn≤0.1%, Ti≤0.1%, Zr≤0.15%, Be≤0.1%, Sn≤0.05%, Pb≤0.1%; unspecified other impurity elements: each ≤0.03 %, the total amount of impurity elements is ≤0.10%, and the balance is Al. The content of graphene in the graphene-enhanced Al-Si-Mg cast aluminum alloy provided by the present invention is far lower than the graphene content of the existing graphene-enhanced aluminum alloy, which not only reduces the cost, but also the obtained graphene-enhanced Al-Si-Mg The comprehensive mechanical properties of Mg cast aluminum alloy are significantly improved, which broadens the application of the alloy in the industrial field.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloys, and in particular relates to a graphene-reinforced Al-Si-Mg cast aluminum alloy and a preparation method thereof. Background technique [0002] Al-Si-Mg cast aluminum alloy has good casting fluidity, small shrinkage and hot cracking sensitivity, [0003] High strength-to-weight ratio, good air tightness and wear resistance, suitable for manufacturing components with complex shapes, such as pump bodies, engine slider components, automotive transmissions, fuel tanks, hubs, various shells, aircraft joints and others Mechanical engineering structural parts. However, the traditional Al-Si-Mg cast aluminum alloy contains coarse dendritic α-(Al) primary crystal phase and coarse lath-like eutectic (Si), and a large number of lath-like eutectics (Si) are also contained in industrial cast aluminum alloys. Impurity phases, these coarse structures and lath-like impurity phases will lead to a decrea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/02C22C1/10
CPCC22C1/1036C22C21/02C22C1/1047
Inventor 张敏罗红斌吴素芹范国强
Owner 广州埃米石墨烯科技有限公司
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