J. Phys. IV France 110 (2003) 803
Dynamic compaction domain (shock compaction energy vs. ) for a Fe-15 atomic % Cu nanometric alloy obtained by mechanical alloyingR.G. Esquives1, 2, E.M. Orozco3, C.T. Renero3 and D.V. Jaramillo2
1 Universidad del Valle de Mexico, Lomas Verdes, Mexico
2 Metallurgical Department, ESIQIE-IPN, Mexico 07738, Mexico
3 Physics Institute, UNAM, Mexico
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. plane, were consolidation of nanometric powders can take place.
© EDP Sciences 2003