Numerical Simulation of Temperature Field and Melt Pool Characteristics of CP-Ti Manufactured by Laser Powder Bed Fusion

A coupled heat source model that combined a Gauss surface with cylindrical volumetric was introduced to simulate temperature field distribution and melt pool characteristics using finite element simulation (FEM) method for the deep narrow pools formed in laser powder bed fusion (L-PBF) aiming at commercial pure titanium (CP-Ti). For comparison, same simulations double ellipsoid were also performed. The simulated geometries match well measurements, an average error of 1% depth 7% width. Based on single-track experimental results, it found by comparing results from three models had better accuracy than other two. Then, CP-Ti fabricated different power levels 300 W 500 scanning speeds 600 mm/s 4000 simulated. According maximum pool, suitable process parameters map obtained. reported agree map. is more accurate applicable during L-PBF.