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Aging behavior of an ultrafine grained Al-Cu alloy was studied. Al-2wt%Cu alloy sheets were solution-treated at 550 o C for 1.8ks and then severely deformed up to an equivalent strain of 4.8 by the accumulative roll bonding (ARB) process at ambient temperature. The ARB processed material showed the ultrafine lamellar boundary structure with mean boundary interval of 67 nm. The ARB processed...
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