The aluminum alloys used in aircraft has a very long history for it can reach high strength after heat treatment, but the weight is very light. It is extremely easy to bend and machined, and of low cost.
The aluminum alloy has become the most commonly used material in modern aviation and is widely used in the manufacture of modern commercial aircraft and military aircraft, such as Boeing 777, Airbus A380, Boeing's UCAV-unmanned aerial combat aircraft and Boeing F/A -18E/F.
Generally speaking, aluminum alloys used as aircraft structural parts are heat-treatable, such as 2xxx, 6xxx and 7xxx aluminum alloy. Among them, 7XXX aluminum alloys such as 7075, 7040, and 7050 aluminum sheet occupy the most important position in aircraft components. Its thickness can range from 0.6 mm to 250 mm.
The 2xxx aluminum has high strength, which is comparable to the steel. However, due to the difference in copper content, the strength and corrosion resistance of 2xxx aluminum alloy vary in a wide range to meet different needs.
Among them, alloys with lower copper content have a corrosion resistance close to that of rust-proof aluminum; alloys with higher copper content have a strength close to duralumin. Due to the higher copper content, 2014 aluminum alloy has higher strength, which is often found in the internal structure or framework of aircraft rather than the shell.
Recently, people pay more attention to how to make the cost of aircraft aluminum alloys decrease through heat treatment. Some aircraft parts manufacturers have tried in the manufacture of such aluminum plates (heat treatment while aluminum is rolled), which are assembled into large ribs and bulkheads after heavy machining.
The advantage of this process is to avoid heat treatment of small parts first and better control of deformation and residual stress, but the disadvantage is that the performance will change along the thickness of the aluminum plate.
Haomei Aluminum has all the main 2xxx and 7xxx aircraft aluminum sheets. Welcome to leave message below to inquire what you need.
Original Source:https://www.aircraftaluminium.com/a/the-main-alloy-used-in-aircraft.html
Tags: alloy used in aircraft , 2014 aluminum alloy ,
Contact Us
