Analysis of compaction behaviour of wet granulated aluminium alloy powder

The compaction behaviours of wet granulated aluminium powder were examined by uniaxial die compaction, and their effect on rearrangement and plastic deformation was analysed by using the CooperEaton equation. Based on the calculation results and structure/morphology of the granulated powder, a new compaction model for granulated powder, which consists of three compaction mechanisms (macrorearrangement, microrearrangement, and plastic deformation), and a modified equation has been proposed in this study. A macrorearrangement indicates it to be a dominant factor on the compaction behaviour of granulated powder and the modified equation is sufficient to analyse the compaction behaviour.