|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Additive Manufacturing: Building the Pathway towards Process and Material Qualification
||In Situ Observation of Porosity Formation in Selective Laser Melting Using Synchrotron-based High Speed X-ray Imaging
||Ross Cunningham, Robert Suter, Anthony Rollett, Jack Beuth
|On-Site Speaker (Planned)
Additive manufacturing provides the means to fabricate complex metallic parts with reduced time to market and material waste. However, while most mechanical properties of AM parts can meet or exceed those of conventionally manufactured materials, fatigue resistance has been consistently inferior due to the large and highly variable presence of porosity in the parts. This presents a challenge for part qualification for any critical or load bearing part without extensive post-processing and part inspection. Previous work by the authors and others have shown strong circumstantial evidence of porosity transference from the powder, but many porosity formation mechanisms in SLM parts require further investigation to validate current models. This work uses newly developed capabilities at Argonne National Lab's Advanced Photon Source to observe porosity developing in the melt pool during processing using high speed X-ray imaging and 3D X-ray microtomography.
||Planned: Supplemental Proceedings volume