| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Solid-State Phase Transformations and Microstructural Evolution
|
| Presentation Title |
Effect of Laser Glazing on Powder-Processed Icosahedral-Phase-Strengthened Aluminum Alloys: From Single Track to Overlapping Tracks |
| Author(s) |
Mingxuan Li, Hannah Leonard, Sarshad Rommel, Cain Hung, Thomas Watson, Tod Policandriotes, Rainer Hebert, Mark Aindow |
| On-Site Speaker (Planned) |
Mingxuan Li |
| Abstract Scope |
Recently, we have developed a series of Al-Cr-Mn-Co-Zr alloys that exhibit a nano-composite FCC Al matrix plus I-phase dispersoid microstructure in gas-atomized powders, and which is retained during consolidation to form bulk materials. Here, laser glazing experiments have been performed to evaluate the potential of the alloys for use in metal additive manufacturing (MAM). Laser tracks were produced on the surfaces of polished coupons at a range of laser powers and scanning speeds, and the resultant microstructures and properties were evaluated using electron microscopy studies and hardness measurements. At an appropriate combination of processing parameters, the FCC Al + I-phase microstructure was retained, resulting in elevated hardness values. Further experiments were performed using overlapping melt tracks, which more closely represent the conditions that would prevail in MAM. These results will be reviewed, and the potential for developing new alloys for MAM based on such systems will be discussed. |
| Proceedings Inclusion? |
Planned: |