Abstract：The Ti-6Al-4V alloy powder was prepared by elga (electrode induction melting gas atomization) process. The particle size distribution and surface morphology of Ti-6Al-4V powder were characterized by laser particle size analyzer and scanning electron microscopy (SEM) . The results show that the Ti-6Al-4V alloy powder prepared by EIGA, is fine and has less hollow ball defects and better sphericity on the basis of our experimental parameters, which is suitable for 3D printing. As the melting power increases, a D50 value of powder tends to be finer.When the melting power increases to 33 kW, the powder particles become coarser. What's more, the proportion of the satellites increases significantly. In consideration of the apparent density, flowability, sphericity, particle size, morphology and other factors, 30 kW is the suitable power value for Ti-6Al-4V alloy powders preparation.

Keywords：electrode induction melting; gas atomization; Ti-6Al-4V alloy; sphericity