|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Metals: Establishing Location Specific, Processing-Microstructure-Property-Relationships III
||Al-Ce Alloys for Additive Manufacturing
||Alex Plotkowski, Orlando Rios, Zach Sims, Sarah Foster, Hunter Henderson, Ryan Ott, Suresh Babu, Ryan Dehoff
|On-Site Speaker (Planned)
Previous research on single bead welds of cast Al-Ce plates demonstrated interesting material characteristics in these alloys at high solidification rates. The solidified weld pools exhibited highly refined microstructures that were thermally stable at temperatures beyond those acceptable for traditional aluminum alloys (i.e. 2xxx, 6xxx, or 7xxx). Recent work has sought to further characterize the influence of process parameters on these microstructures. In particular, welding at combinations of high power and high velocity, characteristic of power bed additive manufacturing processes, was compared to lower velocities and powers similar to those used for powder-blown processes. Multi-pass welds were permed to assess the microstructure in the melt-pool overlap region. A coarse microstructure with reduced hardness was observed in the pool overlap region for low velocities, but was eliminated at high velocities. Early results of powder characterization and additively manufacturing components will also be presented.
||Planned: Supplemental Proceedings volume