Extrusion of High-Hot Strength Aluminum Alloys Produced by Powder Metallurgy

摘要

For automotive applications, aluminum becomes more and more important for otpimization of fuel consumption and efficiency. This applies not only to lightweight body structures, but also to the substitution of ferrous metals in the engine. The reduction of moving masses especially (piston, connecting rod, valve drive etc.) offers substantial advantages, Dispersion-strengthened aluminum alloys with high silicon content have been developed for such purposes. There are different ways to produce these alloys. For example, cylinder liners are made from spray-deposited material. Production from atomized alloy powder is favorable for the highest strength.