|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Additive Manufacturing: Building the Pathway towards Process and Material Qualification
||Microstructural Characterization and Process Mapping in Beam-Based Additive Manufacturing of Inconel 718
||Luke Sheridan, John Thompson, Nathan Klingbeil, Gregory Loughnane
|On-Site Speaker (Planned)
The growing market for additively manufactured components with consistent and desirable material properties has inspired ongoing research efforts to link additive manufacturing (AM) process variables to the resulting microstructure for both laser and electron beam-based processes. Prior work has focused on microstructural process mapping of titanium alloys and nickel-based superalloys, including both Ti-6Al-4V and IN718. To this end, 3D thermophysical simulations have been used to link melt pool geometry and microstructure (e.g., grain size and morphology) over a fairly wide range of commercial AM processes and beam power/velocity combinations. The focus of the current work is microstructural characterization of IN718 deposits to support the ongoing process map development, including validation of the numerical model predictions. Ultimately, the results of this work will contribute to larger-scale research efforts aimed at integrated control of melt pool geometry and microstructure across alloy systems in beam-based AM processes.
||Planned: A print-only volume