|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Additive Manufacturing for Energy Applications IV
||J-16; Understanding Microstructure Evolution of High Temperature Ni Alloys Across Additive Manufacturing Processes
||Jonah Klemm-Toole, Juan Gonzalez, Luc Hagen, Andrew Wessman, Zhenzhen Yu, Amy Clarke
|On-Site Speaker (Planned)
Components for power generation span from small, highly complex, with high feature resolution to large, simple shapes with low dimensional tolerances. Accordingly, a range of additive manufacturing (AM) processes from high precision laser powder bed fusion (LPBF) to high deposition rate wire arc additive manufacturing (WAAM) can be used to produce components. However, the microstructure evolution during deposition and post processing varies considerably between LPBF and WAAM. In this presentation, we show how the as-built microstructures and annealing responses during post build heat treatment systematically vary in LPBF and WAAM IN625 and Haynes 282. We discuss these results in the context of microstructure evolution of wrought counterparts subjected to similar heat treatments. Perspectives on how the unique attributes of each alloy and AM process can be leveraged to improve component performance are provided.
||Additive Manufacturing, High-Temperature Materials, Solidification