| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Frontiers in Solidification Science VIII
|
| Presentation Title |
Grain Refinement Mechanisms of A6061-RAM2 Metal Matrix Composite Alloys during Laser Powder Bed-fusion (LPB-F) |
| Author(s) |
Chloe B. Johnson, G. Becker, Kamel Fezzaa, Jonah Klemm-Toole, Jeremy J. Iten, Amy J. Clarke |
| On-Site Speaker (Planned) |
Chloe B. Johnson |
| Abstract Scope |
Additive Manufacturing (AM) allows for the production of components with complex features, such as internal cooling channels, opening the door for the use of higher operating temperatures than previously achievable. In addition, aluminum alloys are strong candidates for lightweighting, although current wrought aluminum alloys are unprintable and suffer from solidification defects like hot tearing. This implies a need for aluminum alloys specifically designed for AM. One such alloy, A6061-RAM2, developed by Elementum 3D, utilizes their Reactive Additive Manufacturing (RAM) process to refine the microstructure and prevent hot tearing. This process uses reactant particles added to base 6061 alloy powder feedstock to generate product inoculants via chemical reaction in the melt. While this alloy achieves refined, crack-free microstructures, the grain refinement mechanisms have not been extensively investigated. Using detailed in-situ and ex-situ characterization, this work explores the effects of the RAM process and solidification conditions on grain refinement in A6061-RAM alloys. |
| Proceedings Inclusion? |
Planned: |