Study of the ultrafine-grained copper structure formed by dynamic recrystallization by analyzing the etched surface relief

Key Points

• The aim is to investigate the ultrafine-grained structure of copper created through severe plastic deformation, focusing on grain boundary energies.
• Used structure state estimation methods to analyze copper's grain structure.
• Examined the spatial distribution of grain boundary energies in the microstructure.
• Studied relaxation processes at the final deformation stage.
• Identified the ultrafine-grained structure characteristic of severely deformed copper.
• Learned about specific relaxation processes that occurred during the final deformation stage.