Hot Deformation Behavior and Microstructure Influence of 2024 Aluminum Alloy for Chemical Milling
The hot compression simulation experiments were carried out by the Gleeble-1500 simulation machine at deformation temperature of 350～480 ℃ and strain rate of 0.01～10.0 s-1,and true stress-strain curves of 2024 alumi-num alloy for chemical milling were presented.The microstructure of alloy after hot deformation was observed by metallographic microscope(OM)and transmission electron microscope(TEM).The results indicate that the optimal hot deformation temperature of 2024 aluminum alloy for chemical milling is about 450 ℃,which is mainly attributed to the great reduction of dislocation density caused by dynamic recrystallization,leading to the minimum deformation resistance and maximum ultimate deformation amounts.
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