A comparative study of laser direct metal deposition characteristics using gas and plasma-atomized Ti–6Al–4V powders

By M. Ahsan, A. Pinkerton, R. Moat, J. Shackleton. 2011

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XCT analysis of the influence of melt strategies on defect population in Ti?6Al?4V components manufactured by Selective Electron Beam Melting (2015, background): “Studies on direct metal deposition of Ti-6Al-4V have found that, although the volume fraction of gas pores in the as-supplied powder granules affected the final volume fraction of pores, other factors such as the laser power were more important [21].”
Analyzing the effects of powder and post-processing on porosity and properties of electron beam melted Ti-6Al-4V (2017, methodology): “Studies with direct metal laser sintering systems such as the Laser Engineered Net Shaping process have shown a correlation between powder and part porosity, but there is little information on the effects of varying powders with EBM systems [15].”