In the field of aviation industry, aluminum alloy has always been the core solution for lightweight and structural strength. Super-hard aluminum such as 7075 and 7050, 2 series aluminum alloys such as 2024 and 2014, and 6 series aluminum alloys are widely used in aircraft manufacturing.
2024 aluminum alloy is a high-strength hard aluminum with excellent mechanical properties through heat treatment strengthening process. Its chemical composition is mainly copper, magnesium and manganese, forming a strengthening phase, giving the material high strength and good fatigue performance.
In aircraft manufacturing, 2024 aluminum alloy is often used in key structures that bear high loads, such as wing skins, fuselage frames, wing spars and bulkheads. 2024t3 and t4 are its main temper.
2024 t4 aluminum properties are very good like excellent strength, but its corrosion resistance is weak and it is prone to intergranular corrosion. To make up for this defect, surface treatment technologies such as anodizing, anti-corrosion coating or pure aluminum coating are often used in engineering.
For example, the wing skin needs to withstand the huge pressure and wind resistance during flight. 2024-t3 aluminum alloy is hardened by quenching and cold working, which ensures strength while having certain plasticity to meet the forming requirements of complex curved surfaces.
6061 aluminum sheet has magnesium and silicon as the main alloying elements and has balanced comprehensive properties. Its outstanding advantages are good weldability, corrosion resistance and processability, which is suitable for the manufacture of complex structures.
In aircraft fuselage frames, doors and internal structural parts, 6061-t6 aluminum undergoes solid solution treatment and artificial aging, and its strength and corrosion resistance are significantly improved, while maintaining excellent welding performance, which facilitates the assembly of large components.
In addition, the lightweight characteristics of 6061 aluminum alloy are also widely used in the fields of spacecraft parts and automobile lightweighting, but in the aviation field, its stability and reliability make it an ideal choice for fuselage structure. For example, the fuselage frame needs to withstand alternating loads, and the toughness and fatigue resistance of 6061 ensure long-term safe operation.
Original Source:https://www.aircraftaluminium.com/a/the-application-of-2024-and-6061-aluminum-in-aircraft-manufacturing.html
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