Aluminum alloy has the characteristics of light weight, high strength, corrosion resistance, easy to process in all walks of life have a wide range of applications, such as decoration, electronic appliances, mobile phone accessories, computer accessories, mechanical equipment, aerospace, transportation, military and other fields. The application of aluminum alloy in aerospace field is introduced emphatically.

In 1906, German Wilm accidentally found that the strength of aluminum alloy would gradually increase with the extension of the time after it was placed at room temperature for a certain period of time. Became known as the phenomenon of age hardening phenomenon, and as a kind of zui as early as the core technology to promote the development of aviation aluminum alloy material technology caused widespread concern, in the subsequent hundred odd years, aviation aluminum workers in aluminium alloy composition and synthesis method, rolling, extrusion, forging, heat treatment and other materials processing technology, aluminum alloy parts manufacturing and processing, material structure, performance characterization and improve the service aspects of the in-depth research.

The aluminum alloy used in the aviation field is usually called aviation aluminum alloy, which has a series of advantages such as high specific strength, good processing and formability, low cost and good maintainability, etc., and is widely used in the aircraft main structural materials. In the future, the new generation of advanced aircraft in flight speed, structural weight loss and stealth design requirements, such as the improvement of the specific strength, specific stiffness, damage tolerance performance, manufacturing costs and structural integration requirements of aviation aluminum alloy greatly strengthen.

Aviation aluminum

The following is an example of several types of aviation aluminum alloy specific use examples.

2024 aluminum plate, namely 2A12 aluminum plate, has high fracture toughness and low fatigue crack growth rate. It is commonly used as the skin material under the fuselage and wings of zui aircraft.

7075 aluminum plate was successfully developed in 1943, which was the first practical application of 7xxx aluminum alloy. It was successfully applied in b-29 bomber. The strength of 7075-t6 aluminum alloy was high in the zui aluminum alloy at that time, but its resistance to stress corrosion and spall corrosion was very poor.

The 7050 aluminum plate is developed on the basis of the 7075 aluminum alloy, so as to obtain better comprehensive performance of strength, anti-stripping corrosion and anti-stress corrosion, and is applied to the compressive components of the f-18 aircraft.

The 6061 aluminum plate is an early 6XXX series aluminum alloy used in aviation by zui. It has good corrosion resistance and excellent welding performance, but its strength is lower than the average.