| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Materials Design and Alloy Development II
|
| Presentation Title |
Selective Laser Melting of Elemental Powder Blends to Manufacture Precipitation and Oxide-dispersion Strengthened Al Alloys |
| Author(s) |
Jennifer A. Glerum, Christoph Kenel, David C Dunand |
| On-Site Speaker (Planned) |
David C Dunand |
| Abstract Scope |
Oxide-dispersion strengthened parts have been manufactured via AM for energy applications (i.e. gas and steam turbines) from pre-alloyed powders. Using elemental powder blends expands the design space and reduces the cost and compositional limitations associated with pre-alloyed powders. However, the elemental powders need to be fully melted or reacted to form the desired alloy. In this talk, elemental blends of aluminum, transition metals, and aluminum oxide solidified via selective laser melting (SLM) to create precipitation- and oxide-dispersion strengthened (PODS) alloys and their in-situ and ex-situ characterization will be discussed. The melt pool behavior and phase evolution was studied using in-situ high-speed imaging and in-situ diffraction on single line scans (Advanced Photon Source) to cover a wide range of processing parameters and blend compositions. Suitable alloys and reduced processing parameter windows are then selected for in-situ diffraction during full builds (Swiss Light Source). |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |