| Abstract Scope |
High entropy alloys (HEA) have attracted attention for their unique phase stability and diffusion kinetics due to their compositional complexity, which could be leveraged for next generation reactor designs. To manufacture them on a large scale, additive manufacturing is often considered, since the raw materials usually come in powder form. Electric Field Assisted Sintering (EFAS) is more energy efficient and faster than other advanced manufacturing methods, making these advanced materials cheaper and more attainable than before.
However, microstructure changes due to manufacturing technique can affect the high temperature irradiation resistance of these refractory HEAs. For this work, MoNbTi, MoNbTiV and Nb2TiVZr2, manufactured via EFAS and arc melting were irradiated at high temperature over a series of radiation doses with Ti 3+ ion irradiations. These materials were characterized using SEM and TEM to observe microstructure changes after irradiation.
This work presents progress towards understanding the relationships between processing, microstructure, and radiation tolerance in refractory HEA materials in advanced reactor relevant environments. |