|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Accelerated Materials Evaluation for Nuclear Application Utilizing Test Reactors, Ion Beam Facilities and Integrated Modeling
||Ion and Neutron Irradiation Effects in a Co-free High Entropy Alloy
||Congyi Li, Xunxiang Hu, Tengfei Yang, Brian Wirth, Steve Zinkle
|On-Site Speaker (Planned)
High entropy alloys (HEAs) are potential candidates for high-temperature fission or fusion structural applications due to their attractive mechanical properties. In this study, a Co-free CrMnFeNi HEA is either ion or neutron irradiated to examine a wide range of irradiated microstructures at various temperature. Post-irradiation examination of this HEA suggests good resistance to elemental segregation and void swelling from 400 to 700˚C up to 10dpa. 800˚C Ni ion irradiation up to 10dpa has also been performed, and analytical transmission electron microscopy will be utilized to examine HEA’s resistance to radiation at even higher temperature. 0.1 and 1dpa 60˚C neutron irradiations were also performed. Positron annihilation spectroscopy was performed on the neutron-irradiated sample after isochronal annealing from 100 to 700˚C to reveal the evolution of vacancy-type defects, with major annealing observed at ~400 ˚C. Micro-hardness and electrical resistivity were also measured to investigate the temperature-dependence macroscopic properties.
||Planned: Supplemental Proceedings volume