A study of compaction of metal powders

Abstract

This paper is a summary of an investigation of the compaction of metal powders. Two types of irregular atomized iron powders, a spherical copper powder and a bronze powder were uniaxially compacted in a floating-action die at pressures up to 950 MPa. Displacements during compaction were recorded continuously and density-compaction pressure relationships were obtained. Sequential stages of compaction were identified and interrelated in terms of particle rearrangement and deformation. The role of work hardening during compaction is described for the different powders.