Heat treatment of aluminium alloys

Details Heat treatment of aluminium alloys Heat treatment of aluminium alloys

C - Chemistry, Metallurgy

22

F

148/55.5

C22F 1/04 (2006.01) C22C 21/00 (2006.01) C22C 21/06 (2006.01) C22C 21/12 (2006.01) C22F 1/05 (2006.01) C22F 1/057 (2006.01)

Patent

CA 1204987

A B S T R A C T Aluminium alloys containing lithium and copper and/or magnesium as principal alloying constituents are homogenized at 530 C ox above to take into solution as cast intermetallic phases which do not fully go into solution at conventional homogenization temperatures for this class of alloy. Preferably the alloy ingots are slowly heated at rates not exceeding 50°C/hour up to a final homogenization temperature in the region of 550° - 560°C and are then allowed to cool without prolonged holding at temperature.

424918

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