| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing of Metals: Microstructure, Properties and Alloy Development
|
| Presentation Title |
Additive Manufacturing of Aluminum Metal Matrix Composite by SMART Processed Powder |
| Author(s) |
Hyeongseob Kim, Wonjong Jung, Ho Jin Ryu, Seong Jin Kim |
| On-Site Speaker (Planned) |
Hyeongseob Kim |
| Abstract Scope |
Additive manufacturing(AM) of metal matrix composites(MMCs) remains challenging due to the difficulties in preparing spherical composite powders and achieving uniform distribution of reinforcements through conventional powder processing methods. In this study, we successfully manufactured aluminum-TiB2 MMCs using Surface Modification and Reinforcement Transplantation(SMART) technology. SMART is an innovative technique that enables uniform dispersion of reinforcements on the surface of metal powders. We compared the microstructure and mechanical properties of TIB2-reinforced aluminum matrix composites produced using directed energy deposition and powder bed fusion techniques. The core-shell structure of the surface-modified powder improves the laser absorption rate and enhances its printing quality. Furthermore, the addition of ceramic reinforcement suppresses the formation of columnar grains and promotes grain refinement. This implies that the SMART technology not only effectively controls the powder properties but also enhances the quality of AM processes.
Acknowledgements
The present research was partially funded by the Hyundai NGV Project. |