| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Powder Materials Processing and Fundamental Understanding
|
| Presentation Title |
The Strengthening and Deformation Mechanisms of Metal Matrix Nanocomposites |
| Author(s) |
Iris Carneiro, José Fernandes, Sonia Simoes |
| On-Site Speaker (Planned) |
Iris Carneiro |
| Abstract Scope |
Metallic matrix nanocomposites (MMNCs) are attracting interest due to their high mechanical properties and lightweight. Carbon nanotubes (CNTs) are promising nanometric materials for strengthening MMNCs due to their structure and properties. The strengthening effect comes from the contribution of different mechanisms, such as load transfer from the matrix to the reinforcement, second-phase particles, dislocation hardening, and grain refinement. This work aims to study how the CNTs interact with metallic matrices influencing their properties and deformation behaviour. The MMNCs were produced by powder metallurgy, sintering under a vacuum, and deformed by cold-rolling. The identification and study of the different strengthening mechanisms were performed through advanced microstructural characterization techniques, focusing on electron backscatter diffraction (EBSD). The results showed that the introduction of CNTs efficiently strengthens the matrix. During deformation, the mechanisms of load transfer, dislocation hardening, and the formation of second-phase particles were observed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Composites, Nanotechnology, Characterization |