Microstructure, Mechanical Properties of Extruded Aluminum at Different Ram Speeds in Micro/Meso-Scale

Commercially pure aluminum was deformed via the extrusion process at different strain rates considering the temperature rising during the deformation, i.e., with different Zener–Hollomon parameters (Z), to investigate the effect of Z on its grain structure and tensile properties in the micro/meso-scale. The results demonstrate that deformation-induced grain refinement was obtained by increasing the values of the Z. Besides, the dislocation...