|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Metals: Establishing Location-Specific Processing-Microstructure-Property Relationships
||A-5: Alloy Design for Additive Manufacturing: Preliminary Results for Al-Ce Alloys
||Alex Plotkowski, Niyanth Sridharan, Zachary Sims, Ryan Ott, Ryan Dehoff, Sudarsanam Suresh Babu, Orlando Rios
|On-Site Speaker (Planned)
Cerium is the most abundant rare earth element but is considered only a by-product of mining efforts for more critical rare-earths due to its lack of high-volume applications. Finding a large scale use for Ce would reduce the instability in extraction and stabilize the global supply of more valuable rare earths. Recent research has demonstrated the potential for Ce as the primary alloying element in a new series of Aluminum casting alloys that have shown superior fluidity and thermal stability. The goal of this work is to evaluate their viability for use in laser additive manufacturing. The microstructure of laser welds made on Al-Ce plates was evaluated and compared to the as-cast structure for two compositions. Non-equilibrium growth theory was used to rationalize the microstructural features in the weld pools. Approximate microstructural selection maps were developed to guide the choices of composition and process parameters in future additive manufacturing experiments.
||Planned: Supplemental Proceedings volume