5A06 belongs to Al Mg aluminum alloy, with low density, good properties and easy processing. It can fully meet the requirements of high integration, lightweight and miniaturization of products. It is widely used in the manufacture of aircraft body and launch vehicle structure, and is the main structural material in aerospace industry.
5A06 aluminum pipe piping has good weldability and corrosion resistance, so it is used in liquid containers, pipes and other parts.
However, 5A06 also has two major defects
5A06 aluminum pipe piping is easy to oxidize when welding in air, and combines with oxygen to form dense and solid alumina film. In the welding process, alumina film will hinder the good bonding between metals and easily form slag inclusion.
5A06 aluminum pipe piping is prone to corrosion, such as pitting corrosion, blistering, delamination corrosion, which will accelerate the crack growth rate of aircraft structure and shorten the fatigue life of aircraft.
Therefore, when using
5A06 aluminum pipe piping, the above two factors should be considered, and corresponding preventive measures should be taken.
