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Al-Mg-Si aluminum alloy and preparation method thereof

An al-mg-si, aluminum alloy technology, applied in the field of aluminum alloy, can solve the problem of not meeting the performance requirements of chassis steering components, and achieve the effects of improving plasticity, improving comprehensive performance, and increasing recrystallization temperature

Active Publication Date: 2021-09-24
CHINA WEAPON SCI ACADEMY NINGBO BRANCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing Al-Mg-Si aluminum alloys can not meet the performance requirements of chassis steering components

Method used

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  • Al-Mg-Si aluminum alloy and preparation method thereof
  • Al-Mg-Si aluminum alloy and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The mass percent composition of the Al-Mg-Si aluminum alloy of this embodiment is: Si is 1.0%, Mn is 0.55%, Mg is 1.1%, Zn is 0.15%, Ti is 0.05%, Zr is 0.015%, and Cr is 0.15%. %, Er is 0.15% and the balance is Al.

[0023] The preparation steps of Al-Mg-Si aluminum alloy are:

[0024] 1) Weigh silicon ingots, aluminum-copper master alloys, aluminum-manganese master alloys, aluminum-zirconium master alloys, pure magnesium ingots, aluminum-zinc master alloys, aluminum-titanium master alloys, aluminum-chromium master alloys, aluminum-erbium master alloys and pure For aluminum ingots, dry the prepared aluminum alloy raw materials at 250°C for 1 hour;

[0025] 2) Raise the furnace temperature to 830°C, add aluminum ingots, and evenly sprinkle the covering agent on the bottom of the furnace and the aluminum ingots for protection. When the aluminum ingots start to melt, adjust the temperature to 720°C to prevent the aluminum ingots from overheating. Burning phenomenon, afte...

Embodiment 2

[0031] The mass percent composition of the Al-Mg-Si aluminum alloy of this embodiment is: Si is 1.0%, Mn is 0.55%, Mg is 1.1%, Zn is 0.15%, Ti is 0.05%, Zr is 0.045%, and Cr is 0.01% , Er is 0.15% and the balance is Al.

[0032] The preparation steps of Al-Mg-Si aluminum alloy are:

[0033] 1) Weigh silicon ingots, aluminum-copper master alloys, aluminum-manganese master alloys, aluminum-zirconium master alloys, pure magnesium ingots, aluminum-zinc master alloys, aluminum-titanium master alloys, aluminum-chromium master alloys, aluminum-erbium master alloys and pure For aluminum ingots, dry the prepared aluminum alloy raw materials at 240°C for 1.5 hours;

[0034] 2) Raise the furnace temperature to 840°C, add aluminum ingots, and evenly sprinkle the covering agent on the bottom of the furnace and the aluminum ingots for protection. When the aluminum ingots start to melt, adjust the temperature to 720°C to prevent the aluminum ingots from overheating. Burning phenomenon, aft...

Embodiment 3

[0040] The mass percent composition of the Al-Mg-Si aluminum alloy of this embodiment is: Si is 1.0%, Mn is 0.55%, Mg is 1.05%, Zn is 0.15%, Ti is 0.05%, Zr is 0.05%, and Cr is 0.15%. , Er is 0.05% and the balance is Al.

[0041] The preparation steps of Al-Mg-Si aluminum alloy are:

[0042] 1) Weigh silicon ingots, aluminum-copper master alloys, aluminum-manganese master alloys, aluminum-zirconium master alloys, pure magnesium ingots, aluminum-zinc master alloys, aluminum-titanium master alloys, aluminum-chromium master alloys, aluminum-erbium master alloys and pure For aluminum ingots, dry the prepared aluminum alloy raw materials at 230°C for 1.2 hours;

[0043] 2) Raise the furnace temperature to 840°C, add aluminum ingots, and evenly sprinkle the covering agent on the bottom of the furnace and the aluminum ingots for protection. When the aluminum ingots start to melt, adjust the temperature to 730°C to prevent the aluminum ingots from overheating. Burning phenomenon, af...

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Abstract

The invention discloses an Al-Mg-Si aluminum alloy. The Al-Mg-Si aluminum alloy is characterized in that the aluminum alloy is prepared from the following components in percentage by mass: 0.01 wt% to 0.2 wt% of Er, 0.01 wt% to 0.06 wt% of Zr, 0.9 wt% to 1.05 wt% of Si, 0.9 wt% to 1.2 wt% of Mg, 0.5 wt% to 0.8 wt% of Mn, 0.01 wt% to 0.2 wt% of Zn, 0.01 wt% to 0.1 wt% of Ti, 0.01 wt% to 0.2 wt% of Cr and the balance of Al and inevitable impurities. According to the Al-Mg-Si aluminum alloy and the preparation method thereof, Zr is added into the Al-Mg-Si aluminum alloy, the inhibition effect on recrystallization is very obvious, the recrystallization temperature of the alloy is increased, recrystallized grains are refined, the alloy strength is improved, and the plasticity is improved; and Er is an effective microalloying element, can form an Al3Er phase with an L12 structure with Al, and can also form an Al3(ZrxEr-x) phase with better thermal stability when being compounded with Zr, and the strengthening phases can effectively improve the structure property of the aluminum alloy and improve the comprehensive performance of the aluminum alloy.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloys, and in particular relates to an Al-Mg-Si aluminum alloy and a preparation 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. With the rapid development of science and technology and industrial economy, the release and implementation of my country's automobile energy conservation and emission reduction policies, my country's new energy vehicles have shown a rapid development trend in recent years. Different from traditional oil and gas vehicles, new energy vehicles are restricted by the weight of the power battery, the mileage of the power battery and the policy of energy saving and emission reduction. In terms of vehicle design and material application, the lightweight of the vehicle b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/08C22C21/02C22C1/03C22F1/05C22F1/047C22F1/043C21D1/18C21D8/06
CPCC22C21/08C22C21/02C22C1/03C22C1/026C22F1/05C22F1/047C22F1/043C22F1/002C21D8/06
Inventor 曹召勋王军徐永东陈小虎刘辰宋运坤韩俊刚王荫洋钟亮朱秀荣
Owner CHINA WEAPON SCI ACADEMY NINGBO BRANCH