Corrosion-resistant superhard alloy material

A superhard alloy and corrosion-resistant technology, which is applied in the field of corrosion-resistant superhard alloy materials, can solve the problems of the ability of aluminum alloys to resist stress corrosion and exfoliation corrosion, etc., and achieve good crack resistance, increased speed, and not easy to age deformation effect

Inactive Publication Date: 2020-04-10
江苏德比新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aluminum alloy materials Zn and Mg can form MgZn 2 with significant strengthening effect, which makes the heat treatment effect of the alloy far better than that of aluminum-zinc binary alloys. After heat treatment, it can achieve very high tensile strength and strength characteristics. However, the ability of aluminum alloy to resist stress corrosion and exfoliation corrosion will be reduced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A kind of corrosion-resistant superhard alloy material, its raw material mass percent composition is: Zn 7.4%, Mg 1.7%, Er0.4%, Ti 0.03%, W 0.52%, Cu 1.5%, Zr 0.05%, Dy 0.05%, Gd 0.05-0.15%, Ce0.3%, Si 0-0.1%, Fe 0-0.16%, and the rest is aluminum.

[0021] A production process of a corrosion-resistant superhard alloy material, comprising the following steps:

[0022] (1) Put the steel ingot into the melting furnace for melting, the melting temperature is 730°C, stir the molten metal and remove the slag;

[0023] (2) Add Cu, Mg, and Zn elements according to the above ratio, stir to make the alloy liquid fully mix for 8 minutes, then add Dy, Gd, Er, Ce, and lower the temperature of the furnace to 693-695°C, stir to make the alloy liquid Mix well for 14-16 minutes, add Ti, W, Zr elements according to the above ratio, and raise the temperature of the furnace to 700°C, stir to make the alloy liquid fully mixed for 16-20 minutes;

[0024] (3) Fill the molten metal with nitr...

Embodiment 2

[0027] A corrosion-resistant superhard alloy material, the mass percentage of raw materials is composed of: Zn-8.3%, Mg-2.2%, Er-0.5%, Ti-0.06%, W-2.5%, Cu-3%, Zr-0.25% , Dy-0.08%, Gd-0.15%, Ce-0.4%, Si 0-0.1%, Fe 0-0.16%, and the rest is aluminum.

[0028] A production process of a corrosion-resistant superhard alloy material, comprising the following steps:

[0029] (1) Put the steel ingot into the melting furnace for melting, the melting temperature is 750°C, stir the molten metal and remove the slag;

[0030] (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 693-695°C, stir to make the alloy liquid Mix well for 14-16 minutes, add Ti, W and Zr elements according to the above ratio, and raise the temperature of the furnace to 750°C, stir to make the alloy liquid fully mix for 16-20 minutes;

[0031] (3) Fill the molten metal with nitrogen...

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Abstract

The invention provides a corrosion-resistant superhard alloy material, which comprise the following components in percentage by mass: 7.4-8.3% of Zn, 1.7-2.2% of Mg, 0.4-0.5% of Er, 0.03-0.06% of Ti,0.52-2.5% of W, 1.5-3% of Cu, 0.05-0.25% of Zr, 0.05-0.08% of Dy, 0.05-0.15% of Gd, 0.3-0.4% of Ce, 0-0.1% of Si, 0-0.16% of Fe and the balance of aluminum. The material has the advantages of high hardness, high strength and excellent wear resistance, corrosion resistance and crack resistance, and can be used in extreme environments.

Description

technical field [0001] The invention relates to the field of superhard materials, in particular to a corrosion-resistant superhard alloy material. Background technique [0002] Aluminum alloy is an alloy with aluminum as the matrix element. It has the characteristics of high strength, 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 2 with significant strengthening effect, which makes the heat treatment effect of the alloy far better than that of aluminum-zinc binary alloys. After heat treatment, it can achieve very high tensile strength and strength characteristics. However, the ability of the aluminum alloy to resist stress corrosion and exfoliation corrosion wil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/10C22C1/02C22C1/06
CPCC22C1/026C22C1/06C22C21/10
Inventor 吴友洲戚晓峰
Owner 江苏德比新材料科技有限公司
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