The explosive compaction of spherical copper powder to fabricate thin rectangular plates using a multi-die configuration is considered. The effect of shock wave front developments through the powder body on microstructural changes, bonding between particles and fracture damage of the compact is examined and discussed. The ‘soundness’ of the compact is examined with respect to the die design used at the powder/die cavity interfaces of materials of different mechanical impedance. Improved workability of the compact subjected to subsequent compressive processing, for example, rolling at high reductions, is reported.
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