| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Composite Materials: Sustainable and Eco-Friendly Material Development and Applications
|
| Presentation Title |
Development of Nitrogen-Induced Self-Forming Aluminum Matrix Composites for Reduced Carbon Footprint |
| Author(s) |
Konbae Lee, Kanhu Charan Nayak, Juyeon Han, Seoyeon Jeon, Jiwon Lee, Hyokyung Sung, Hyunjoo Choi |
| On-Site Speaker (Planned) |
Hyunjoo Choi |
| Abstract Scope |
Conventional manufacturing processes for aluminum matrix composites (AMCs) involve complex procedures, leading to high costs, limited applications, and significant carbon emissions. Herein, we develop the self-sintering process, which is a cost-effective and eco-friendly process to manufacture fully dense AMCs without vacuum, pressure, or any reactive metals. During the process, the mixture of aluminum powder and reinforcement is exposed to a N2 atmosphere, and aluminum oxide is transformed to aluminum nitride, leading to self-sintering of aluminum powder by atomic diffusion through the path in the destroyed aluminum oxide. Owing to the heat from the exothermic nitridation of the Al powder, the Al powder may partially melt and subsequently infiltrate the empty space between the Al powder and reinforcement, thereby increasing the density of the final composite. Based on this observation, a guideline can be provided for designing Al/SiC/AlN hybrid composites with tailored mechanical and thermal properties. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Aluminum, Composites, Solidification |