Dynamic compaction domain (shock compaction energy vs. $\rho_0/\rho$) for a Fe-15 atomic % Cu nanometric alloy obtained by mechanical alloying

A Fe-15 atomic percentage Cu mixture was processed by Meehanical Alloying, in a Spex 8000D, and Dynamically Compacte, in a light gas gun, The MA as-powder product was a supersaturated solid solution with a BCC structure (a=0.28736 mn). Nanometric grain sizes between 6 to 30 nm were obtained. Different impact velocities on precompacted cylindrical specimens were used to obtain bulk specimens. The energy used for compaction was between 6 to 10% of the impact energy. XRD and TEM showed no structural changes after DC. We are proposing a Dynamic Compaction Domain in the shock compaction energy vs. $\rho_0/\rho$ plane, were consolidation of nanometric powders can take place