EFFECT OF THERMO-MECHANICAL TREATMENTS ON THE HOT DEFORMATION BEHAVIOR OF ALUMINUM ALLOY 2024
Abstract: In this paper different thermo-mechanical treatments were performed on the commercial aluminum alloy 2024-T3, in order to improve deformation characteristics. These treatments include the solution heat treatments of precipitates that have been performed at the temperature of 500oC for 4, 6 and 8 hours followed by a quenching in water, hot and cold rolling, recrystallization. By applying the hot tension tests was investigated the hot deformation behavior of the processed alloy. The tensile tests have been carried out at temperature of 460oC with the strain rates of 0.001 s-1and 0.01 s-1. The results show that, the increase of solubilization treatment time leads to a decrease of the tensile strength and to an increase of the fracture strain in all strain rates.The maximum ductility has been achieved on the solution treated specimen at the temperature of 500oC for 8 hours and tensile deformed at 460oC with strain rate of 0.001s-1.
Key words: 2024 aluminum alloy, thermo-mechanical treatment, solution heat treatment, hot tension tests, hot ductility.
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