Densification behaviour of titanium alloy powder compacts at high temperature

Densification behaviours of titanium alloy (Ti-6Al-4V) powder compacts were investigated under uniaxial compression at high temperature. The yield fun ction and a strain hardening law proposed by Kim were implemented into a fi nite element program (Abaqus) to compare with experimental data of porous t itanium alloy powder preforms under PM forging. Experimental data were comp ared with finite element calculations for the variations of relative densit y with the applied pressure. Deformed geometry and density distributions of titanium alloy powder compacts under PM forging were also compared with fi nite element calculations.