The aerospace field mainly develops high-strength, high-toughness and strong corrosion-resistant aluminum alloy materials to meet the harsh conditions of use in aerospace. The alloy used in aircraft mainly includes 2000 and 7000 series. At present, it has developed into the main structural material of military and civil aircraft in the world, accounting for 70-80% of aircraft structural parts, and has replaced expensive titanium alloys in many fields.
7075 alloy the most typical aerospace super duralumin. After more than 70 years of development, 7075 alloy has formed a considerable family. Now commonly used alloys are 7075/7175/7475 alloy. The static strength performance of 7075 aluminum is higher than that of 2024 and 2124 alloy. The 7075 alloy is not suitable for fusion welding, and the resistance welding adaptability is not as good as that of the 2024 alloy.
2024 aluminum alloy is a typical hard aluminum alloy in the aluminum-copper-magnesium system with good comprehensive performance. It features high strength and certain temperature resistance, and can be used as working parts below 150 degrees. After heat treatment, 2024 aluminum alloy undergoes natural solution treatment to obtain relatively high strength and toughness. Because its strength is very high, it is generally used in the production of skins, beams, partitions, and wings.
2014 aluminum is an Al-Cu-Mg-Si series high-strength wrought aluminum alloy, which can be strengthened by heat treatment. The chemical composition of this alloy is similar to that of 2A14 aluminum alloy. It has high strength and good thermal processing performance, and is easy to forge. The performance is basically the same as 2A14. Due to the high copper content of the alloy, its corrosion resistance is poor, and it is prone to intergranular corrosion and stress corrosion.
7050 aluminum alloy, which belongs to the Al-Zn-Mg-Cu alloy, has the advantages of low density, high strength, good machinability, resistance to exfoliation corrosion and stress corrosion cracking (SCC). It is widely used in aerospace, lightweight modern automobiles, vehicles, fixtures, etc.
Compared with ordinary aluminum alloys, aluminum alloys for aircraft have higher requirements for strength, hardness, toughness, fatigue resistance and plasticity. Haomei Aluminum has all these strongest aluminum alloys. Welcome to leave message below to inquire what you need.
Original Source:https://www.aircraftaluminium.com/a/the-strongest-aluminum-alloys-used-in-aircraft.html
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