|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Additive Manufacturing: Building the Pathway towards Process and Material Qualification
||Surface Topography and the Relationship to Surface and Near-surface Structures in Laser Powder Bed Fusion Additive Manufacturing
||Jason Fox, Mark Stoudt, Thien Phan, Zach Reese, Shawn Moylan, Brandon Lane, Lyle Levine
|On-Site Speaker (Planned)
The development of additive manufacturing has allowed for increased flexibility and complexity of designs over formative and subtractive manufacturing. However, increased design complexity leads to difficulty in maintaining consistent or desired as-built surface texture and microstructure. To better understand the relationship between the as-built surface texture, surface structures that are indicative of defects in the build process, and the near-surface structures, such as microstructure and porosity, samples covering a range of overhang angles and process parameters were built in a laser powder bed fusion system. The surface texture was characterized and samples were sectioned for microstructural analysis. Analysis of the profile and areal surface data has shown relationships to the specific features that make up the surface texture and, ultimately, the mechanisms that created them. Through these relationships, measured surface texture has the potential as a process signature to help determine the cause of various defects.
||Planned: Supplemental Proceedings volume