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A kind of high-strength plastic aluminum alloy and preparation method thereof

An aluminum alloy, high-strength technology, applied in the field of high-strength plastic aluminum alloy and its preparation, can solve the problems of increasing the workload of support personnel and equipment maintenance costs, endangering flight safety, affecting tasks, etc., and achieves abundant raw material reserves, low prices, and costs. low effect

Active Publication Date: 2021-12-14
YANTAI NANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the extensive use of the aircraft, the ventral fins have been broken many times, the longest crack can reach 100mm, which seriously endangers flight safety and affects the completion of tasks. At the same time, it also greatly increases the workload of support personnel and equipment maintenance costs.

Method used

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  • A kind of high-strength plastic aluminum alloy and preparation method thereof
  • A kind of high-strength plastic aluminum alloy and preparation method thereof
  • A kind of high-strength plastic aluminum alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A high-strength plastic aluminum alloy, including Cu, Mg, Ag, and Mn elements, the mass percentage content of each element in the aluminum alloy is: Cu is 5% to 6%, Mg is 0.2% to 1.0%, and Ag is 0.2% to 0.5%, Mn is 0.2-0.4%, and the balance is Al.

[0024] The high-strength plastic aluminum alloy in this embodiment is specifically completed according to the following steps:

[0025] S1. Alloy smelting and casting: according to the aluminum alloy in which Cu is 5%-6%, Mg is 0.2%-1.0%, Ag is 0.2-0.5%, Mn is 0.2-0.4%, and the balance is Al, weigh an appropriate amount of pure Al, pure Mg and Al-20wt% Cu, Al-20wt% Ag and Al-10wt% Mn master alloy; The master alloy is separated and preheated at 160°C for 15-30 minutes; heat the pure aluminum in a resistance furnace, keep it at 680-760°C to melt the masterbatch, and then add the preheated pure Mg, Al-20wt% Cu, Al -20wt% Ag and Al-10wt% Mn master alloy, heat up to 680-760°C and keep it warm for 15-30 minutes, wait until the a...

Embodiment 2

[0032] In this example, a high-strength plastic aluminum alloy was prepared and tested according to the following steps:

[0033] 1. Casting: According to the mass fraction of Cu in the aluminum alloy is 5%, the mass fraction of Mg is 0.2%, the mass fraction of Ag is 0.2%, the mass fraction of Mn is 0.2%, and the balance is Al. Weigh an appropriate amount of pure Al, pure Mg and Al-20wt% Cu, Al-20wt% Ag and Al-10wt% Mn master alloys; Al is completely melted, then add pure Mg, Al-Cu master alloy, Al-Ag master alloy, Al-Mn master alloy in turn, at a temperature of 760°C, mechanically stir for 15 minutes, then cool down to 700°C and stand for 15 minutes to obtain alloy melt body, cast into an iron mold at 300°C to obtain an aluminum alloy ingot, and air-cool to room temperature.

[0034] 2. Homogenization treatment: place the aluminum alloy ingot in a resistance heating furnace, keep it at 310°C for 15 hours, then raise the temperature to 560°C for 8 hours, and obtain the homoge...

Embodiment 3

[0038] In this example, a high-strength plastic aluminum alloy was prepared and tested according to the following steps:

[0039] 1. Casting: According to the mass fraction of Cu in the aluminum alloy is 5.5%, the mass fraction of Mg is 0.6%, the mass fraction of Ag is 0.3%, the mass fraction of Mn is 0.3%, and the balance is Al. Weigh an appropriate amount of pure Al, pure Mg and Al-20wt% Cu, Al-20wt% Ag and Al-10wt% Mn master alloys; Al is completely melted, then add pure Mg, Al-Cu master alloy, Al-Ag master alloy, Al-Mn master alloy in turn, at a temperature of 760°C, mechanically stir for 15 minutes, then cool down to 700°C and stand for 15 minutes to obtain alloy melt body, cast into an iron mold at 300°C to obtain an aluminum alloy ingot, and air-cool to room temperature.

[0040] 2. Homogenization treatment: place the aluminum alloy ingot in a resistance heating furnace, keep it at 320°C for 12 hours, then raise the temperature to 580°C for 6 hours, and obtain the homo...

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Abstract

The invention relates to the technical field of metal materials and processing thereof, and discloses a high-strength plastic aluminum alloy and a preparation method thereof. The composition content of the aluminum alloy is as follows: the mass fraction of Cu is 5%-6%, and the mass fraction of Mg is 0.2%- 1.0%, the mass fraction of Ag is 0.2-0.5%, the mass fraction of Mn is 0.2-0.4%, and the mass fraction of alloy elements is ≤10%, and the balance is Al. By reasonably controlling the contents of Cu, Mg, Ag and Mn in the aluminum alloy, the aluminum alloy has both high strength and high plasticity. The preparation method: 1. melting and casting to obtain an aluminum alloy ingot; 2. homogenizing treatment; 3. extruding and deforming to obtain a high-strength and tough aluminum alloy. Its deformed mechanical properties such as strength, plasticity and toughness are superior to the traditional commercial deformed aluminum alloy 2D70, and its comprehensive mechanical properties in the as-cast state are superior to the traditional commercial cast aluminum alloy 2024, which is suitable for aerospace materials.

Description

technical field [0001] The invention relates to the technical field of metal materials and processing thereof, in particular to a high-strength plastic aluminum alloy and a preparation method thereof. Background technique [0002] Aluminum and aluminum alloys, due to their excellent properties such as low density, high specific strength, abundant reserves and easy recycling, are known as "21st century green and environmentally friendly engineering materials". Development and other aspects have great development prospects. [0003] The pelvic fin is an aerodynamic component installed on the belly of the aircraft, which is equivalent to the vertical tail of the aircraft. Its main function is to increase the directional stability and control stability of the aircraft, especially in high-angle-of-attack flights, which can effectively slow down the aircraft’s swing. Components are indispensable for high maneuverability aircraft. Aircraft pelvic fin structures are generally divi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/16C22C1/03C22F1/057
CPCC22C21/16C22C1/026C22C1/03C22F1/057
Inventor 李民程雪婷房洪杰马旭王兴瑞孙杰汪洪波
Owner YANTAI NANSHAN UNIV
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