| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Multi-Principal Element Alloys IV: Mechanical Behavior
|
| Presentation Title |
Microstructure and Mechanical Properties of In-Situ TiC Reinforced TaNbVTi High Entropy Alloy Matrix Composites |
| Author(s) |
Hyeok Jae Choi, Jin Kyu Lee |
| On-Site Speaker (Planned) |
Jin Kyu Lee |
| Abstract Scope |
TaNbVTi high entropy alloy (HEA) matrix composites, in-situ reinforced with varying TiC volume fractions and size distributions, were prepared by mechanical alloying followed by spark plasma sintering. The formation mechanism of in-situ TiC was studied through thermodynamic analysis, and the microstructure of the composites was observed to understand the effect of in-situ TiC particles on the mechanical properties of TaNbVTi HEA composites.
The results indicate that the composite is composed of a BCC solid solution and TiC formed by the diffusion of carbon from the mold during the sintering process. The in-situ TiC-reinforced TaNbVTi HEA exhibited a compressive fracture strength of 2400 MPa and an elongation of 42% at 800℃. These excellent mechanical properties are primarily attributed to the homogeneous and fine microstructures, the solid solution strengthening effect, and the dispersion strengthening effect of TiC. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Powder Materials, Composites |