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        Comparative Study of the Influence of Various Melt-Treatment Methods on Hot Deformation Behavior of 3003 Al Alloy

        Guiqing Chen,Gaosheng Fu,Hongling Chen,Wenduan Yan,Chaozeng Cheng,Zechang Zou 대한금속·재료학회 2012 METALS AND MATERIALS International Vol.18 No.1

        3003 Al alloy samples with various metallurgical qualities were obtained by various melt-treatment methods and were deformed by isothermal compression in the deformation temperature range of 300 °C to 500°C at strain rates between 0.0l and 10.0 s −1with a Gleeble-1500 thermal simulator. The results show that there is a close relationship between melt-treatment and subsequent thermal deformation. The hot deformation acti-vation energy (Q) bears a linear relationship with the inclusion content (H) of 3003 Al alloy prepared by various melt-treatment methods, that is Q = 35.62 H + 171.58. The activation energy of the 3003 Al alloy prepared by the highly efficient melt-treatment is the lowest (174.62 kJ·mol −1), which is beneficial to the material hot plastic deformation. The critical strain of the 3003 Al alloy prepared by various melt-treatment methods is investigated through the work hardening rate. Finally, the critical conditions of the investigated alloy were determined to predict the occurrence of dynamic recrystallization.

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