Short communication: ‘Low activation, refractory, high entropy alloys for nuclear applications’

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 d...

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Bibliographic Details
Published in:Journal of nuclear materials 2019-12, Vol.526, p.151744, Article 151744
Main Authors: Kareer, A., Waite, J.C., Li, B., Couet, A., Armstrong, D.E.J., Wilkinson, A.J.
Format: Article
Language:English
Subjects:
Alloy development
Alloys
Entropy of activation
Heavy ion irradiation
Heavy ions
High entropy alloys
High level radioactive wastes
Indentation
Ion implantation
Irradiation
Low activation
Nuclear engineering
Nuclear reactors
Radioactive wastes
Refractory
Structural materials
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Summary: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.
ISSN:0022-3115
1873-4820
DOI:10.1016/j.jnucmat.2019.151744