Corrosion-resistant superhard aluminum alloy material and production process

A technology of aluminum alloy materials and superhard alloys, which is applied in the field of metal material manufacturing, can solve the problems of cracking, superhard aluminum alloy stress corrosion, weak resistance to stress corrosion and exfoliation corrosion, etc., to increase the recrystallization temperature and improve Strength, effect of improving oxidation resistance and corrosion resistance

Inactive Publication Date: 2019-10-29
四川欧亚高强铝业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to solve the problem that the above-mentioned superhard aluminum alloy material has weak resistance to stress corrosion and exfoliation corrosion, and the existence of coarse crystal phase particles, which leads to stress corrosion and cracking of superhard aluminum alloy. Corrosion superhard aluminum alloy material and production process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Corrosion-resistant superhard aluminum alloy material, the raw material mass percentage of the corrosion-resistant superhard aluminum alloy material is composed of: Cu 1.5%; Mg 1.8%, Zn 7.5%, Ti 0.03%, W 0.55%, Zr 0.05%, Dy 0.05%, Gd0.05%, Er 0.3%, Ce 0.3%, Si 0%, Fe 0%, and the rest is aluminum.

[0026] The production process of the corrosion-resistant superhard aluminum alloy material comprises the following steps:

[0027] (1) Put the aluminum ingot into the melting furnace for melting, the melting temperature is 730°C, stir the molten metal and remove the slag;

[0028] (2) Add Cu, Mg, and Zn elements according to the above ratio, stir to fully mix the alloy liquid for 8 minutes, then add Dy, Gd, Er, and Ce, and lower the temperature of the furnace to 693°C, stir to fully mix the alloy liquid After 14 minutes, add Ti, W and Zr elements according to the above ratio, and raise the temperature of the furnace to 722°C, and stir to fully mix the alloy liquid for 16 min...

Embodiment 2

[0034]Corrosion-resistant superhard aluminum alloy material, the raw material mass percentage of the corrosion-resistant superhard aluminum alloy material is composed of: Cu 3%; Mg 2.5%, Zn8.4%, Ti 0.06%, W 2.5%, Zr0.25% , Dy0.08%, Gd0.15%, Er0.45%, Ce 0.4%, Si0.1%, Fe0.15%, and the rest is aluminum.

[0035] A production process for a corrosion-resistant superhard aluminum alloy material, comprising the following steps;

[0036] (1) Put the aluminum ingot into the melting furnace for melting, the melting temperature is 750°C, stir the molten metal and remove the slag;

[0037] (2) Add Cu, Mg, and Zn elements according to the above ratio, stir to make the alloy liquid fully mix for 10 minutes, then add Dy, Gd, Er, Ce, and lower the temperature of the furnace to 695°C, stir to make the alloy liquid fully mix After 16 minutes, add Ti, W, Zr elements according to the above ratio, and raise the temperature of the furnace to 724°C, and stir to fully mix the alloy liquid for 20 min...

Embodiment 3

[0043] Corrosion-resistant superhard aluminum alloy material, the raw material mass percentage of the corrosion-resistant superhard aluminum alloy material is composed of: Cu 2.1%; Mg2.0%, Zn 7.9%, Ti 0.04%, W1.2%, Zr 0.11% , Dy 0.06%, Gd 0.08%, Er 0.32%, Ce 0.31%, Si 0.05%, Fe 0.08%, and the rest is aluminum.

[0044] The production process of the corrosion-resistant superhard aluminum alloy material comprises the following steps:

[0045] (1) Put the aluminum ingot into the melting furnace for melting, the melting temperature is 740°C, stir the molten metal and remove the slag;

[0046] (2) Add Cu, Mg, and Zn elements according to the above ratio, stir to fully mix the alloy liquid for 9 minutes, then add Dy, Gd, Er, and Ce, and lower the temperature of the furnace to 693°C, stir to fully mix the alloy liquid After 15 minutes, add Ti, W and Zr elements according to the above ratio, and raise the temperature of the furnace to 724°C, and stir to fully mix the alloy liquid for...

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Abstract

The invention discloses a corrosion-resistance ultrahard aluminum alloy material and a production process. The corrosion-resistance ultrahard aluminum alloy material comprises the following raw materials in percentage by mass: 1.5-3% of Cu, 1.8-2.5% of Mg, 7.5-8.4% of Zn, 0.03-0.06% of Ti, 0.55-2.5% of W, 0.05-0.25% of Zr, 0.05-0.08% of Dy, 0.05-0.15% of Gd, 0.3-0.45% of Er, 0.3-0.4% of Ce, 0-0.1%of Si, 0-0.15% of Fe, and the balance of aluminum. The corrosion-resistance ultrahard aluminum alloy material has the advantages of high hardness, high strength, wear resistance, corrosion resistanceand excellent crack resistance, can be used in an extreme environment, is not easy to age and deform, long in service life, and is suitable for producing aeroengine compressor parts, secondly structural parts of rockets, guided missiles and high-speed aircrafts.

Description

technical field [0001] The invention relates to the field of metal material manufacturing, in particular to a corrosion-resistant superhard aluminum alloy material and a production process. Background technique [0002] Aluminum alloy is an alloy with aluminum as the matrix element. It has the characteristics of low density, high specific strength, good plasticity, good electrical and thermal conductivity, and excellent corrosion resistance, so it has been widely used in aerospace, aviation, automobile and other fields. [0003] Aluminum alloy materials include main alloying elements Zn, Mg, Cu and trace elements Zr, as well as a small amount of impurity elements Fe and Si. Aluminum alloy materials Zn and Mg can form MgZn with remarkable strengthening effect 2 , so that the heat treatment effect of the alloy is far better than that of the aluminum-zinc binary alloy. After heat treatment, it can achieve very high tensile strength and strength characteristics, but it will lea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/10C22C1/06C22C1/02
CPCC22C1/026C22C1/06C22C21/10
Inventor 费久港
Owner 四川欧亚高强铝业有限公司
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