About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Metal Matrix Composites: Processing, Additive Manufacturing, and Applications
|
| Presentation Title |
Interface Engineering and Multiscale Characterisation of SiC-Coated Carbon Nanofibre-Reinforced AZ91 Magnesium Matrix Composites |
| Author(s) |
Jue Zhu, Milo Shaffer, Qianqian Li |
| On-Site Speaker (Planned) |
Jue Zhu |
| Abstract Scope |
Carbon nanofibres (CNFs) are promising reinforcements for lightweight magnesium alloys, but their effectiveness is limited by agglomeration and unstable interfaces during melt processing. This study develops SiC-coated CNFs for AZ91 composites to determine how coating architecture controls reinforcement dispersion, interfacial reactions and load transfer. Gas-phase processing is used to vary the coating from nanoscale deposits to nanowhisker-bearing architectures, with phase formation and surface chemistry verified by complementary structural and spectroscopic analyses. After melt incorporation, a correlative multiscale framework quantifies reinforcement distribution, clustering and three-dimensional connectivity, while nanoscale characterisation resolves coating continuity, reaction products and carbon–SiC–matrix interfaces. Mechanical and fracture analyses then relate these features to interfacial debonding, fibre pull-out and coating damage. By integrating coating design, melt processing and multiscale characterisation, this work establishes processing–coating–dispersion–interface–performance relationships and provides design principles for magnesium nanocomposites |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Composites, Magnesium, Surface Modification and Coatings |