| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Process-induced Microstructures and Defects
|
| Presentation Title |
F-34: Characterization of Microstructure and Defects in a CrMnFeCoNi High-Entropy Alloy Processed by Multi-Beam Laser Directed Energy Deposition |
| Author(s) |
Kholqillah Ardhian Ilman, Naoya Nishikawa, Yorihiro Yamashita, Takahiro Kunimine |
| On-Site Speaker (Planned) |
Kholqillah Ardhian Ilman |
| Abstract Scope |
This study explores the processing of a single-bead CrMnFeCoNi high-entropy alloy (HEA) using the multi-beam laser directed energy deposition (L-DED) and a modified multi-beam laser focusing technique. Especially, the effects of laser power and scanning speed on microstructure and defects in the alloy are investigated. It is found that higher laser power facilitated melting of powder and substrate materials and interfacial diffusion processes, resulting in larger melt pool sizes and increased iron incorporation within the bead-substrate interface. Moreover, the laser power significantly impacted the grain size and quality of the bead. Conversely, the scanning speed inversely affected the bead size, with a decrease in cross-sectional area corresponding to higher scanning speeds. The findings from this study provide valuable scientific insights into the processing of the HEA and emphasize the critical role of optimizing the printing parameters to ensure the production of high-quality printed materials. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, High-Entropy Alloys, Characterization |