Abstract:Aluminium-magnesium-scandium alloys offer good weldability, high corrosion resistance, high thermal stability and the potential for high strength by precipitation hardening. A problem of aluminium-scandium alloys is the low solubility of about 0.3 mass-% scandium when using conventional casting methods. The solution of scandium can be raised by higher cooling rates during solidification. This was realised by spray forming of Al-4.5Mg-0.7Sc alloys as flat deposits. Further cooling rates after solidification sho… Show more
“…In order to obtain a supersaturated solid solution however, high cooling rates would be required during casting to ensure rapid solidification of the slab and prevent formation of Al 3 (Sc, Zr) precipitates during casting. Studies on Al-Mg-Sc alloys cast through nonconventional methods such as Spray Forming[42] and Power Metallurgy[32]…”
AA5xxx series Al alloys have presented great potential in recent decades for packaging and automotive applications. A recent further development of these alloys has been the addition of Sc and Zr.
“…In order to obtain a supersaturated solid solution however, high cooling rates would be required during casting to ensure rapid solidification of the slab and prevent formation of Al 3 (Sc, Zr) precipitates during casting. Studies on Al-Mg-Sc alloys cast through nonconventional methods such as Spray Forming[42] and Power Metallurgy[32]…”
AA5xxx series Al alloys have presented great potential in recent decades for packaging and automotive applications. A recent further development of these alloys has been the addition of Sc and Zr.
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