|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Additive Manufacturing: Building the Pathway towards Process and Material Qualification
||Power Bed Fusion-based Additive Manufacturing in Turbine Engine Hot-section Alloys Through Scanning Laser Epitaxy
||Amrita Basak, Andriy Dotsenko, Yunpei Yang, Arpit Patel, Suman Das
|On-Site Speaker (Planned)
Scanning Laser Epitaxy (SLE) is a metal powder bed fusion-based additive manufacturing technology under development for turbine engine hot-section alloys solidified in equiaxed, directionally-solidified and single-crystal microstructural morphologies. This presentation will describe the state-of-the-art of SLE process development at Georgia Tech combining equipment and process development, theoretical modeling, experimental characterization, property testing, and real-time feedback control. SLE process physics modeling is combined with process development based on design-of-experiments and quantitative metallography to enable process-structure-property mapping. Mechanical property testing is used to compare additive manufactured coupons against baseline cast alloys. Finally, a thermal imaging-based real-time adaptive control scheme regulates the melt pool temperature to significantly enhance deposit quality, process repeatability and process control. Results across a range of hot-section alloys will be presented to illustrate the potential of SLE technology for both additive repair and additive manufacturing. This work is sponsored by the Office of Naval Research through grant N00014-14-1-0658.
||Planned: A print-only volume