Christopher M. Laursen¹, Jay Carroll¹, Philip Noell¹, David G. Moore²; ¹Sandia National Laboratories, Materials Mechanics and Tribology, ²Sandia National Laboratories, Nondestructive Evaluation and Experimental Mechanics

Considerable work has gone into limiting porosity in additively manufactured (AM) metallic components, yet it is likely it will remain an ever-present feature moving forward. Realizing this, a greater understanding of what role pore characteristics, such as shape, size, relative proximity, and overall density have on the mechanical properties of a material is necessary. The presented work considers two AM materials ranging the ductility spectrum, including as-built AlSi10Mg and 316L stainless steel. Non-destructive techniques such as computed-tomography and Archimedes’ density were used. These results were compared to mechanical results from tensile tests including ductility, tensile strength, and failure location to draw correlations between pore characteristics and bulk mechanical properties. 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.