|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Coupling Advanced Characterization and Modeling Tools for Understanding Fundamental Phase Transformation Mechanisms: An MPMD Symposium in Honor of Hamish Fraser
||New Techniques for Interrogation of Structure in Additively Manufactured Materials
||Andrew T. Polonsky, Marie-Agathe Charpagne, Brent Goodlet, Tresa Pollock
|On-Site Speaker (Planned)
The development of layer-by-layer additive 3D printing approaches for metallic systems promises new pathways for the fabrication of complex, advanced engineering components, beyond prototyping, to full manufacturing. However, a major challenge remains in demonstrating the integrity of components manufactured by these additive processes, which develop due to solidification in melt pools that are of the order of cubic millimeters in extent. New approaches to the characterization of structure developed at the melt pool scale will be reviewed. Three-dimensional datasets generated by TriBeam tomography of stainless steel and nickel-base alloys fabricated by the LENS and electron beam additive approaches, respectively, will be reviewed. Aspects of structure unique to these manufacturing approaches will be discussed. The ability of resonant ultrasound spectroscopy to detect abrupt changes in structure associated with these processes will also be addressed.
||Planned: Supplemental Proceedings volume