Abstract
In this research, equal channel angular pressing was employed to improve the mechanical characteristics of initial billets of pure copper in the micro-extrusion process. The micro-extrusion was performed to manufacture the micro gears. Then, the effects of lubrication conditions and mechanical properties of the initial billets were investigated on the formability, microstructure, and microhardness of micro gears. The results declared that microhardness in micro gears manufactured from ECAPed copper was higher compared to annealed samples. The experiments substantiated that microstructural differences depended on the location within the micro gears and initial microstructure of the billets utilized in the micro-extrusion process.
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