THE EXPERIMENTAL INVESTIGATION OF ANNEALING PARAMETERS EFFECTS ON AL2024-T3 MATERIALS’ FORMABILITY AND MECHANICAL PROPERTIES

Abstract

In this study, the effects of annealing parameters on the formability andmechanical properties of Al2024-T3 sheet material were investigatedexperimentally. Annealing process were applied at 100 °C, 200 °C, 300 °C,400 °C annealing temperatures and at 6 minutes, 30 minutes, 60 minutesannealing times. The forming operations were applied in 10 mm / secdeformation velocity and in V bending dies with an angle of 30 °, 60 °, 90 °,120 °. In the experimental studies, it was determined that there was nosignificant change in the hardness values of the specimens at temperaturesless than 300 ° C annealing temperature and 6 minutes annealing timeparameters, but an irregular changes were observed in the mechanicalproperties of specimens. However, it was observed that there were asignificant decrease in the hardness values and mechanical properties of thetest specimens after the annealing temperature of 300 ° C and the annealingtime of 6 minutes. It has been observed that the samples only has been formedsuccessfully in a 30 ° die angle and at low temperatures (RT - 100 ° C - 200 °C). It has been observed that a successful forming process has been performedin 30 ° and 60 ° die angles by increasing the annealing parameters values(400 ° C - 30 min or 400 ° C - 60 min). However, forming defects such ascracks and fractures were encountered in forming processes using 90 ° and120 ° die angled.