| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Ceramic Materials and Processing
|
| Presentation Title |
Achieving Heterogeneous Network Microstructure in Laser Additively Manufactured Hybrid TiB/TiC/Ti6Al4V Composite |
| Author(s) |
Bathusile Masina, Paul Lekoadi, Hosia Kgomo |
| On-Site Speaker (Planned) |
Bathusile Masina |
| Abstract Scope |
Laser-directed energy deposition and in-situ alloying processes were used to manufacture hybrid TiB/TiC/Ti6Al4V composites while varying the mass flow rate of both TiB2 and TiC. A heterogeneous network microstructure was achieved on the in-situ synthesised TiB/TiC/Ti6Al4V which consisted of fine grain zones with a network structure and coarse grain zones. This microstructure shows whisker TiB and eutectic particle TiC precipitated on the grain boundary. The effect of adding TiB2 and TiC on the microstructure and hardness was systemically investigated. It was found that the microhardness increased as the mass flow rate increased. No phase variations were observed as the mass flow rate increased. The process window in terms of the mass flow rate for producing the heterogeneous network microstructure in hybrid TiB/TiC/Ti6Al4V composites was determined and will be discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Composites, High-Temperature Materials |