| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Length-Scale Phenomena in Mechanical Response
|
| Presentation Title |
Impact of Nanoscale Intermetallic Dispersions in Al-Ce Alloys for Selective Laser Melting |
| Author(s) |
Hunter B. Henderson, Alfred Amon, Alexander Wilson-Heid, Zachary Sims, Orlando Rios, Ryan Ott, Scott McCall |
| On-Site Speaker (Planned) |
Hunter B. Henderson |
| Abstract Scope |
Aluminum-cerium is a promising system for alloys adapted to Selective Laser Melting (SLM). The eutectic nature of the phase diagram results in good printability, while the low mobility of Ce in liquid Al results in a nanoscale dispersion of intermetallic particles in alloys produced by SLM. Further, the near-zero solubility of Ce in Al makes these intermetallics highly resistant to thermal coarsening during SLM and subsequently in service. The hard intermetallics can change the material’s elastic response through changes in load sharing characteristics, both as a function of contiguity and volume fraction. Here, we discuss recent investigations of Al-Ce alloys for SLM that leverage rapid solidification to produce materials with unusual strength and elastic response, as characterized by in situ mechanical testing, microhardness testing, and other methods. The possibilities and implications of hypereutectic Al-Ce alloys with metastable solidification pathways will also be discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Aluminum, Mechanical Properties |