  Two new, low activation high entropy alloys (HEAs) TiVZrTa and TiVCrTa are
studied for use as in-core, structural nuclear materials for in-core nuclear
applications. Low-activation is a desirable property for nuclear reactors, in
an attempt to reduce the amount of high level radioactive waste upon
decommissioning, and for consideration in fusion applications.The alloy TiVNbTa
is used as a starting composition to develop two new HEAs; TiVZrTa and TiVCrTa.
The new alloys exhibit comparable indentation hardness and modulus, to the
TiVNbTa alloy in the as-cast state. After heavy ion implantation the new alloys
show an increased irradiation resistance.
