Creep-resistant high-temperature-resistant rare earth aluminum alloy and preparation method thereof

A technology of creep resistance and high temperature resistance, applied in the field of aluminum alloys, can solve problems such as mutual inhibition, and achieve the effect of refining grains, improving creep resistance, and increasing yield strength

Pending Publication Date: 2022-05-27
SHANDONG NANSHAN ALUMINUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a creep-resistant and high-temperature-resistant cast aluminum alloy and its preparation method, which solve the problem of mutual inhibition of complex components in the processing of aluminum alloys in the prior art

Method used

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  • Creep-resistant high-temperature-resistant rare earth aluminum alloy and preparation method thereof
  • Creep-resistant high-temperature-resistant rare earth aluminum alloy and preparation method thereof
  • Creep-resistant high-temperature-resistant rare earth aluminum alloy and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Step 1: Accurately weigh aluminum, zinc, magnesium and master alloy Al- Hf, Al-Gd and Al-Zr are sent to the preheating kettle for preheating;

[0034] Step 2: put the aluminum into the melting kettle for melting, heat up to 700°C after melting, add zinc and magnesium, and add the master alloys Al-Hf, Al-Gd and Al-Zr when the melt temperature reaches 720°C;

[0035] Step 3: stir for 3 minutes to fully melt, then heat up to 790°C, keep the temperature for 25 minutes, then cool down, refine for 6 minutes, and let stand for 30 minutes;

[0036] Step 4: Cooling, removing surface scum, and casting.

Embodiment 2

[0038] Step 1: Accurately weigh aluminum, zinc, magnesium and master alloy Al- Hf, Al-Gd and Al-Zr are sent to the preheating kettle for preheating;

[0039] Step 2: put the aluminum into the melting kettle for melting, heat up to 700°C after melting, add zinc and magnesium, and add the master alloys Al-Hf, Al-Gd and Al-Zr when the melt temperature reaches 720°C;

[0040] Step 3: stir for 3 minutes to fully melt, then heat up to 790°C, keep the temperature for 25 minutes, then cool down, refine for 6 minutes, and let stand for 30 minutes;

[0041] Step 4: Cooling, removing surface scum, and casting.

Embodiment 3

[0043] Step 1: Accurately weigh aluminum, zinc, magnesium and master alloy Al- Hf, Al-Gd and Al-Zr are sent to the preheating kettle for preheating;

[0044] Step 2: put the aluminum into the melting kettle for melting, heat up to 700°C after melting, add zinc and magnesium, and add the master alloys Al-Hf, Al-Gd and Al-Zr when the melt temperature reaches 720°C;

[0045] Step 3: stir for 3 minutes to fully melt, then heat up to 790°C, keep the temperature for 25 minutes, then cool down, refine for 6 minutes, and let stand for 30 minutes;

[0046] Step 4: Cooling, removing surface scum, and casting.

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PUM

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Abstract

The invention discloses a creep-resistant and high-temperature-resistant rare earth aluminum alloy and a preparation method thereof, and mainly relates to the field of aluminum alloys. The aluminum alloy comprises the following components in percentage by mass: 5.0 to 8.0 percent of Zn, 2.5 to 3.5 percent of Mg, 2.0 to 3.0 percent of Hf, 0.3 to 0.6 percent of Gd, 0.2 to 0.5 percent of Zr and the balance of Al and impurities. The method has the beneficial effect that the problem of mutual inhibition of complex components in use in aluminum alloy processing in the prior art is solved.

Description

technical field [0001] The invention relates to the field of aluminum alloys, in particular to a creep-resistant and high-temperature-resistant cast aluminum alloy and a preparation method. Background technique [0002] Aluminum profiles are widely used in passenger cars and have many types, including body structural parts, body covering parts and decorative parts. Most of the aluminum profile parts that were first used in passenger cars did not require high strength, but had high requirements on corrosion resistance, wear resistance and appearance quality. With the advancement of science and technology, the structure of passenger cars is gradually developing towards the direction of full bearing structure. At present, the proportion of full-load passenger cars in major passenger car manufacturers has exceeded 50%. In order to improve the anti-corrosion performance of passenger cars, prolong the service life of passenger cars and reduce maintenance costs, more and more pas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/10C22C1/03
CPCC22C21/10C22C1/03C22C1/026Y02P10/25
Inventor 王绍俊隋来智沈现猛吕尚娟孟杰杨焕军臧伟王仁武丁春华丁岩马德良马旭
Owner SHANDONG NANSHAN ALUMINUM
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