What are the uses of aluminum alloy in the field of aircraft manufacturing

Aluminum alloys used in the aviation field are usually called aviation aluminum alloys, which have a series of advantages such as high specific strength, good processing and formability, low cost, and good maintainability, and are widely used in aircraft main structural materials. In the future, the design requirements of the new generation of advanced aircrafts such as flight speed, structural weight reduction and stealth will be improved, and the specific strength, specific rigidity, damage tolerance performance, manufacturing cost and structural integration requirements of aviation aluminum alloy will be greatly strengthened.2024 aluminum sheet, 2A12 aluminum sheet, has high fracture toughness and low fatigue crack growth rate. It is the most commonly used aircraft fuselage and under-wing skin material.

The 7075 aluminum plate was successfully developed in 1943. It was the first practical application of 7xxx aluminum alloy. It was successfully applied to the B-29 bomber. The strength of 7075-T6 aluminum alloy was the highest among aluminum alloys at that time, but its resistance to stress corrosion and Anti-flaking corrosion performance is very poor.

7050 aluminum plate is developed on the basis of 7075 aluminum alloy, which has obtained better strength, anti-flaking corrosion and stress corrosion resistance, and is applied to the compressive components of F-18 aircraft.

6061 aluminum plate is the earliest 6XXX series aluminum alloy used in aviation. It has good corrosion resistance and excellent welding performance, but the strength is moderately low.

7075 aluminum sheet, 2024 aluminum sheet and other aviation aluminum sheets have also been widely used in aerospace, aviation production, aviation parts processing, drones and other fields.