About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing and Innovative Feedstock Processing for Multifunctional Materials
|
| Presentation Title |
Influence of Powder Oxygen Content on Porosity and Microstructure Evolution in High-Entropy Alloys Fabricated Via Directed Energy Deposition |
| Author(s) |
Geonwoo Baek, Daehyeon Kim, Hyun-Joong Kim, Sourabh Kumar Soni, Sangha Park, Hyoung Seop Kim, Soon-jik Hong |
| On-Site Speaker (Planned) |
Geonwoo Baek |
| Abstract Scope |
Additive manufacturing (AM) of metals enables the fabrication of complex geometries that are difficult to achieve through conventional casting methods. The rapid solidification and high thermal gradients inherent to AM often result in refined and unique microstructures, contributing to superior mechanical properties. These advantages have driven the widespread adoption of AM technologies in aerospace, biomedical, and defense industries. While significant research has been devoted to optimizing process parameters such as laser power, scan speed, and powder feed rate, the role of powder characteristics in determining the quality of AM parts remains relatively underexplored. In this study, the influence of powder characteristics on microstructure evolution and mechanical properties of CoCrFeMnNi high-entropy alloy (HEA) specimens fabricated via directed energy deposition (DED) was systematically investigated. Particular attention was given to the effect of powder oxygen content on crack formation and porosity in DED-processed specimens. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, High-Entropy Alloys, Other |