|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Additive Manufacturing: Building the Pathway towards Process and Material Qualification
||Modeling the Life Cycle of High throughput Tensile Specimens Produced by Laser Powder Bed Fusion: From Fabrication to Performance
||Kyle Johnson, Bradley H Jared, John M Emery, Jonathan D Madison, Carl L Jacques, Burke L Kernen, Kurtis R Ford, Joseph E Bishop
|On-Site Speaker (Planned)
In this research, process-structure-property-performance relationships are numerically predicted for high-throughput 316L stainless steel tension specimens produced by laser powder bed fusion. The thermal history is predicted along with possible locations of large pores or lack of fusion zones, which are compared with advanced computed tomography (CT) data. The thermal history and defect structure are used in solid mechanics simulations using a viscoplastic material model to predict residual stresses, distortion, and resultant mechanical properties including effects of higher dislocation densities observed in AM parts. Subscale porosity unresolved by CT methods is accounted for by a continuum damage model. Finally, the tensile response of the specimens is simulated and compared to experiments. Sandia National Laboratories is a multimission 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.
||Planned: Supplemental Proceedings volume