|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Additive Manufacturing: Building the Pathway towards Process and Material Qualification
||Positional Dependence of Pore Morphology, Size and Orientation in SEBM Ti-6Al-4V and Influence on Mechanical Properties
||Ma Qian, Joe Elambasseril, Huiping Tang, Shenglu Lu, Wei Xu, Milan Brandt
|On-Site Speaker (Planned)
Understanding the formation of defects and their influence on mechanical properties is important to the further development of metal additive manufacturing (AM) processes. This study focuses on the positional dependence of pore morphology, size and orientation and their influence on the mechanical properties of Ti-6Al-4V long rods built vertically to the limit (300 mm) of a commercial selective electron beam melting (SEBM) system. A total of 18,337 consecutive slices were scanned from an as-built rod using X-ray micro-computed tomography (ÁCT) and reconstructed into a three-dimensional (3D) digital rod for quantitative analyses. Corresponding mechanical properties were produced from different sections of the long rods with and without hot isostatic pressing (HIP). In addition, the effect of pore size on plastic strain developments under tensile loading was analysed by converting quantitative ÁCT data into finite element (FE) meshes. The implications of the experimental findings are discussed from different perspectives.
||Planned: Supplemental Proceedings volume