|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Application of Solidification Fundamentals to Challenges in Metal Additive Manufacturing
||Tomography and 3D Grain Mapping for Additive Manufacturing Qualification
||Marcin Bauza, Luke Hunter, Jeff Gelb
|On-Site Speaker (Planned)
Additive manufacturing techniques can produce complex anisotropic 3D structures. The reliability and performance of the produced parts relies heavily on the resultant microstructure from often-proprietary feedstock. Materials designed for high-stress applications can be quite sensitive to discrete, complex pore structure, therefore the need to investigate and understand the morphology in 3D at the appropriate pore scale to avoid premature failure. X-ray microscopy (XRM) for tomography using a laboratory source was used to characterize porosity in additive process control study for various steel input materials and Ti-6Al-4V built with Arcam SEBM. For additional process and material qualification, a new XRM commercial development for 3D grain mapping termed diffraction contrast tomography (DCT) will be discussed. An example of this capability was used to follow the sintering of copper particles through a series of time-lapsed DCT measurements. XRM can provide accurate 3D internal structural information critical to aid computational design of next-generation materials.
||Planned: Supplemental Proceedings volume