Mechanical behavior and microstructure evolution during deformation of AA7075-T651

In view of developing a physics-based constitutive material model for AA7075-T651, the mechanical behavior and microstructure evolution has been studied through compression tests using Gleeble thermo-mechanical simulator. The were performed at wide range temperatures (room temperature (RT), 100, 200, 300, 400 500 °C) with two constant strain rates (0.01 1 s-1). true stress-strain curves depicted an increase in flow stress rate decrease deformation temperature, exception RT. effects softening mechanisms, such as adiabatic heating, dissolution precipitates, dynamic recovery (DRV) recrystallization (DRX), on level, sensitivity (SRS) over entire analyzed. Pertaining to analysis, intermetallic particles present initial as-received (AR) identified (Al,Cu)6(Fe,Cu) SiO2 help back-scattered electron (BSE) imaging energy dispersive X-ray spectroscopy (EDS). after processes analyzed compared that AR state inverse pole figures (IPF), grain orientation spread (GOS) boundary rotation maps generated from diffraction (EBSD) scans. DRV was observed 300 °C, whereas combination incomplete DRX took place °C depending rate. fraction recrystallized grains higher case lower Furthermore, difference different surfaces deformed samples well locations individual also investigated.