| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
Correlating the microstructure and deformation mechanisms in equiatomic refractory ternary alloy systems |
| Author(s) |
Nachiket Keskar, Sudip Kumar Sarkar, Advika Chesetti, Tirthesh Ingale, Vishal Soni, Abhishek Sharma, Rajarshi Banerjee |
| On-Site Speaker (Planned) |
Nachiket Keskar |
| Abstract Scope |
This study explores the microstructural characteristics and deformation mechanisms of three ternary equiatomic alloys: NbTaTi, NbTaZr, and NbTiZr, representative of refractory high-entropy alloys (RHEAs). As previously reported, NbTiZr was found to have a single-phase body-centered cubic (BCC) structure, while NbTaTi exhibited a BCC matrix with Ti-rich precipitates within the grains and along the grain boundaries. Further, NbTaZr featured a phase-separated lamellar structure, consisting of (Nb, Ti)-rich and Zr-rich phases, along with Zr-rich precipitates at grain boundaries. Mechanical testing indicated that NbTaZr has the highest strength, while NbTaTi shows the lowest. The deformation mechanisms observed were significantly influenced by the morphology and distribution of precipitate phases in each alloy. This study provides a detailed analysis of the structure-property relationship, enhancing the understanding of how microstructural features impact the mechanical properties of these alloys. The insights gained could inform the design of advanced materials with tailored properties for high-temperature applications. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Phase Transformations, Mechanical Properties |