Investigating Process Parameters in Laser-Powder Bed Fusion

Josh Koepke1,2 Bradley Jared1

  1. Sandia National Laboratories
  2. University of New Mexico

Many metal additive manufacturing (AM) printers provide the ability to control process parameter inputs. Varying process parameters provides an opportunity to optimize parts for desired mechanical and physical properties. In laser-powder bed fusion (L-PBF) tunable process parameters include laser power, laser velocity, laser beam diameter, and powder layer thickness. These parameters can be varied to allow for a range of volumetric energy density (VED) inputs. The current talk focuses on the investigation of the laser power-velocity (PV) space, and the influence VED has on physical properties. Measurements of physical properties including density and surface roughness will be presented. These physical properties will be used to make a determination of optimal print settings.

Sandia National Laboratories is a multi-mission laboratory managed and operated by National Technology and Engineering Solutions of Sandia, LLC., a wholly owned subsidiary of Honeywell International, Inc., for the U.S. Department of Energy’s National Nuclear Security Administration under contract DE-NA0003525.