| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
Effect of Zr and V Additions to the Refractory Multi-principal Element MoNbTi System in Terms of Resulting Microstructure and Radiation Resistance |
| Author(s) |
Djamel Kaoumi, Saikumaran Ayyappan, Lucia Gomez Hurtado, Geoffrey Beausoleil |
| On-Site Speaker (Planned) |
Saikumaran Ayyappan |
| Abstract Scope |
The current work compares the radiation behaviour of MoNbTi, MoNbTiZr and MoNbTiZrV alloys prepared through Spark Plasma Sintering followed by in-situ Kr+ ion irradiation upto 10 dpa. Pre-irradiation characterization showed the existence of BCC and (BCC+HCP) phases depending on alloy composition, with possible segregation of (Zr, V) rich regions and Mo- rich phases. The irradiations were done in situ in a TEM at room temperature and 500 °C. The resistance of twin boundaries under irradiation appeared to depend on the chemical composition of the phase hosting them (Ti rich versus Zr rich); amorphization at room temperature only occurred in some phases; void formation also was dependent on the local chemistry. In addition to in-situ TEM, thorough EDX-STEM mapping was done pre and post irradiation to evidence any segregation behavior. This work seeks to evidence the impact of specific chemical elements on the resulting microstructure and consequent alloy irradiation response. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, High-Entropy Alloys, Phase Transformations |