Abstract
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This study investigated the flowability and compactability of the milled Ti-Cu alloys as a new version of
biomedical alloys used for fabrication via Additive Manufacturing. In this study, Ti- 50 at. % Cu powder
was first milled for different durations, and the morphology, microhardness, size, flowability, and
compactability of the powder were assessed. The results indicated that while flowability increased with
prolonged milling time, compressibility decreased owing to a decrease in the plastic deformation capacity.
The highest flowability level was obtained when hard TiCu phase was synthesized after 30 hours of milling.
Different linear and nonlinear compaction equations were used to investigate the densification response of
TiCu powder in a rigid mold during uniaxial compression. Cooper-Eaton nonlinear equation was found to
be the best fit compared to the linear equation. The contribution of particle rearrangement to the
densification behavior was high, and it increased upon increasing the applied pressure. At pressures below
1200 MPa, the contribution of plastic deformation to the powder densification was negligible
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