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Aluminum alloy containing graphene and heat treatment method for aluminum alloy

A heat treatment method and aluminum alloy technology, which is applied in the field of aluminum alloy preparation, can solve the problems of low strength of aluminum alloy, and achieve the effects of increasing the tensile strength at room temperature, increasing the strength, and improving the uniformity of distribution

Inactive Publication Date: 2018-08-14
益阳仪纬科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problem that the strength of the aluminum alloy containing graphene is not high, the present invention proposes a kind of aluminum alloy containing graphene and its heat treatment method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The aluminum alloy in this embodiment is an aluminum alloy product obtained by extrusion casting.

[0025] A heat treatment method for an aluminum alloy containing graphene, wherein the aluminum alloy comprises the following components in terms of mass percentage: 9% stainless steel fiber, 6.4% Mg, 2.5% Fe, 2.6% graphene, 0.08% Sc, Zr 0.18%, Y 0.22%, Si 0.06%, Mn0.04%, Er 0.03%, Ce 0.02%, impurity≦0.15%, the balance is Al;

[0026] Described heat treatment step comprises:

[0027] S1. Heat the aluminum alloy to 300° C. and keep it for 8 hours; raise the temperature to 600° C. and keep it for 5 hours; cool it down to 150° C. and keep it for 3 hours.

[0028] S2. Perform water quenching treatment, wherein the temperature of water is 50° C.; the time of water quenching is 1 h; the stirring rate of water is 100 r / s.

[0029] S3. Tempering the water-quenched aluminum alloy at 350-370° C. for 4 hours.

[0030] S4, performing annealing treatment afterwards, the temperature ...

Embodiment 2

[0033] The aluminum alloy in this embodiment is an aluminum alloy product obtained by extrusion casting.

[0034] A heat treatment method for an aluminum alloy containing graphene, wherein the aluminum alloy comprises the following components in terms of mass percentage: 9% stainless steel fiber, 6.4% Mg, 2.5% Fe, 2.6% graphene, 0.08% Sc, Zr 0.18%, Y 0.22%, Si 0.06%, Mn0.04%, Er 0.03%, Ce 0.02%, impurity≦0.15%, the balance is Al;

[0035] Described heat treatment step comprises:

[0036] S1. Heat the aluminum alloy to 350° C. and keep it for 6 hours; raise the temperature to 500° C. and keep it for 6 hours; cool it down to 100° C. and keep it for 2 hours.

[0037] S2. Perform water quenching treatment, wherein the temperature of water is 40° C.; the time of water quenching is 0.5 h; the stirring rate of water is 150 r / s.

[0038] S3. Tempering the water-quenched aluminum alloy at 300-320° C. for 6 hours.

[0039] S4, performing annealing treatment afterwards, the temperatur...

Embodiment 3

[0042] The aluminum alloy in this embodiment is an aluminum alloy product obtained by extrusion casting.

[0043] A heat treatment method for an aluminum alloy containing graphene, wherein the aluminum alloy comprises the following components in terms of mass percentage: 9% stainless steel fiber, 6.4% Mg, 2.5% Fe, 2.6% graphene, 0.08% Sc, Zr 0.18%, Y 0.22%, Si 0.06%, Mn0.04%, Er 0.03%, Ce 0.02%, impurity≦0.15%, the balance is Al;

[0044] Described heat treatment step comprises:

[0045] S1. Heat the aluminum alloy to 400° C. and keep it for 4 hours; raise the temperature to 550° C. and keep it for 3 hours; cool it down to 150° C. and keep it for 2.5 hours.

[0046] S2. Perform water quenching treatment, wherein the temperature of water is 30° C.; the time of water quenching is 1 h; the stirring rate of water is 120 r / s.

[0047] S3. Tempering the water-quenched aluminum alloy at 340-350° C. for 5 hours.

[0048] S4, performing annealing treatment afterwards, the temperatur...

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Abstract

The invention discloses a heat treatment method for aluminum alloy containing graphene. The aluminum alloy comprises the following ingredients of, in percentage by mass, 8-10% of metal fibre, 5.5-7.2%of Mg, 2.0-3.5% of Fe, 1.2-2.6% of graphene, 0.08-0.18% of Sc, 0.08-0.18% of Zr, 0.12-0.22% of Y, 0.02-0.07% of Si, 0.02-0.07% of Mn, 0.01-0.03% of Er, 0.01-0.03% of Ce, less than or equal to 0.15% of impurities and the balance Al. The heat treatment method comprises the steps that S1, the aluminum alloy is heated to 300-400 DEG C, heat preservation is performed for 4-8 h, the temperature is raised to 500-600 DEG C, heat preservation is performed for 3-6 h, the temperature is reduced to 100-200 DEG C, and heat preservation is performed for 2-3 h; S2, water quenching treatment is performed, wherein the temperature of water is 25-60 DEG C; S3, the aluminum alloy after water quenching is subjected to tempering with the temperature being 300-400 DEG C; S4, then annealing treatment is performed, the temperature of annealing treatment is 100-200 DEG C, and the time is 6-10 h. By means of the heat treatment method provided by the invention, the strength of the aluminum alloy containing graphene is improved, the maximum strength of the aluminum alloy can be improved to 685, in addition, the invention further comprises the aluminum alloy prepared by the heat treatment method.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy preparation, in particular to a graphene-containing aluminum alloy and a heat treatment method thereof. Background technique [0002] Aluminum alloy is the most widely used non-ferrous metal structural material in industry, and has been widely used in aviation, aerospace, automobile, machinery manufacturing, shipbuilding and chemical industry. Aluminum alloys containing graphene have good thermal and electrical conductivity. [0003] Graphene is composed of single atomic layers of carbon atoms connected by SP2 hybridization. It has excellent electrical and thermal conductivity. Its elastic modulus reaches 1TPa and its fracture strength exceeds 100GPa. Therefore, graphene is an ideal aluminum alloy. Reinforcement phase, but the strength of aluminum alloys containing graphene needs to be improved. Contents of the invention [0004] In order to solve the technical problem that the strength...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/04C22C49/06C22C49/14C22C111/00
CPCC22F1/04C22C49/06C22C49/14C22F1/002
Inventor 李凯谢昭民
Owner 益阳仪纬科技有限公司
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