About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Vacancy Engineering in Metals and Alloys
|
| Presentation Title |
Vacancy-driven phase stability phenomena in ion irradiated alloys |
| Author(s) |
Steven J. Zinkle, Siwei Chen, Yajie Zhao, Yao Li |
| On-Site Speaker (Planned) |
Steven J. Zinkle |
| Abstract Scope |
Particle irradiation is a useful tool for creating vacancies (and corresponding interstitial atoms) under controlled experimental conditions. By varying the mass and energy of the bombarding particles, collision events varying from isolated vacancy-interstitial pairs to highly clustered vacancy and interstitial complexes can be created within nanosecond time scales. Observation of the subsequent interaction of these radiation-induced defects with microstructural features such as grain boundaries, network dislocations and dislocation loops provides valuable information on vacancy migration, clustering, solute-defect interactions, and vacancy-driven phase transformations. This presentation will summarize recent observations on the effects of dose rate and temperature on the phase stability of nanoscale precipitates in Fe-Cr and Fe-Cu alloys following ion irradiation with protons or heavy ions, along with observations of unusual solute segregation behavior to dislocation loops and grain boundaries. The implications of these observations on solute diffusion mechanisms will be discussed. |
| Proceedings Inclusion? |
Planned: |