| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Bcc-Superalloys
|
| Presentation Title |
High temperature mechanical and irradiation response of a eutectic refractory alloy |
| Author(s) |
Sriswaroop Dasari, Boopathy Kombaiah, Philip Petersen, Mukesh Bachhav |
| On-Site Speaker (Planned) |
Sriswaroop Dasari |
| Abstract Scope |
A stable BCC+B2 microstructure has eluded the refractory alloys community. This is because the phase stability in these systems is relatively poorly understood as compared to 3d transition metals. In this study, we introduce a thermodynamics-based design of BCC+B2 microstructure with refractory elements. A comprehensive analysis of Hume-Rothery criteria and binary phase diagrams has indicated that alloying with Ru can produce stable BCC+B2 microstructures. Consequently, an 80Zr-20Ru (at.%) binary eutectic alloy was arc-melted and investigated in this study. Electron microscopy results showed that the alloy is largely composed of BCC and B2 phases. A third phase, alpha-Zr was also found in minor phase fraction (<2%). The performance of this lamellar eutectic was investigated using compression testing and self-ion irradiation up to 600oC. The results of this study show the importance of thermodynamics in alloy design for high temperature applications. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Phase Transformations, Characterization |