Influence of strain rate on the mechanical response of nanostructured coppers elaborated by SPD and SPS

The influence of strain rate on the mechanical response two different nanostructured pure coppers was investigated under uniaxial compression. first copper elaborated by powder metallurgy using Spark Plasma Sintering (SPS) process. second Severe Plastic Deformation (SPD). Conventional characterizations were conducted with quasi-static compression and tensile tests, hardness tests and, microstructure analysis. effect evaluated at rates varying from 10 -4 to +4 s -1 . high data generated a direct Hopkinson impact technique. increase strength analysed discussed Scanning Electron Microscope observations grain size distribution. properties are consequently dependent metallurgical history these samples prepared according routes.