[1] SILCOCK J M,FLOWER H M.Comments on the Nucleation and Growth of in Al-Cu Alloys [J].Scripta Mater,2002,46(3):389-394.[2] RINGER S P,HONO K.Microstructural Evolution and Age Hardening in Aluminium Alloys [J].Mater Characterization,2000,44(1):101-131.[3] MONDOLFO L F.Aluminum Alloys:Structure and Property [M].New York:Butterworths Press,1976:260-320.[4] HAASON P,XIAO Ji-mei.Physical Metallurgy [M].Beijing:Science press,1984:183-230.[5] ANDO Y,MIHAMA K.Growth of GP Zones and θ″-Phase in Al-Cu Based Alloys [J].J. Crystal Growth.1974(24):581-584.[6] KARLIK M,JOWFFREY B.Study of GP Zones in Al-Cu Based Alloys [J].Acta Mater,1997,45(8):3 251-3 263.[7] TAKEDA M,MAEDA Y.Disscontiniuty of GP Zones and θ″-Phase in Al-Cu Based Alloys [J].Scripta Mater,1999,41(6):643-649.[8] PAULING L.The Nature of the Chemical Bond [M].San Simeon:Corrnell University Press,1960:300-400.[9] HONO K,SATOH T,HIRANO K.Evidence of Multi-Layer GP Zones in Al-Cu Alloy [J].Philos Mag A,1986,53(4):493-504.