|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Accelerated Materials Evaluation for Nuclear Application Utilizing Test Reactors, Ion Beam Facilities and Integrated Modeling
||Evaluation of Radiation effects in FeMnNiCr High Entropy Alloy
||Congyi Li, Anantha Phani Kiran Kumar Nimishakavi, Hongbin Bei, Brian Wirth, G. Malcolm Stocks, Steve Zinkle
|On-Site Speaker (Planned)
High entropy alloys (HEAs) have potential application as a structural material in advanced nuclear energy systems due to their superior mechanical properties.
Its high configurational entropy might alter point defect (solute and radiation defects) diffusion processes. In this study, a novel 27%Fe-27%Mn-28%Ni-18%Cr single phase f.c.c alloy has been synthesized. Samples have been irradiated by Ni ions at room temperature, 400, 500, 600 or 700 ˚C to 1 and 10 dpa. Transmission electron microscopy has shown no void formation and stable microchemistry at grain boundaries, suggesting the possibility for enhanced resistance to radiation. Neutron irradiation has also been conducted at 70 ˚C to 0.1 dpa and 1 dpa. Bulk hardness, nanohardness, stress/strain curve and electrical resistivity have been measured to reveal the change of material properties. Ab initio modeling has also been conducted to calculate the point defect and diffusional parameters within a FeMnNiCr HEA.
||Planned: A print-only volume