Ion irradiation response and mechanical behavior of reduced activity high entropy alloy

Refractory alloys consisting of reduced activity elements are attractive for nuclear applications to allow safe post-service recycling and meet fusion reactor requirements. Here, ion irradiation response was studied for a newly developed refractory high entropy alloy, HfTaTiVZr, with low activation...

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Bibliographic Details
Published in:Journal of nuclear materials 2020-02, Vol.529 (C), p.151955, Article 151955
Main Authors: Sadeghilaridjani, Maryam, Ayyagari, Aditya, Muskeri, Saideep, Hasannaeimi, Vahid, Salloom, Riyadh, Chen, Wei-Ying, Mukherjee, Sundeep
Format: Article
Language:English
Subjects:
Alloys
Entropy
High entropy alloy
High entropy alloys
Ion irradiation
Irradiation
Mechanical properties
Metallurgical constituents
Micro-pillar compression
Nano-indentation
Point defects
Radiation
Refractory alloys
Self-healing
Stainless steel
Stainless steels
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Summary:Refractory alloys consisting of reduced activity elements are attractive for nuclear applications to allow safe post-service recycling and meet fusion reactor requirements. Here, ion irradiation response was studied for a newly developed refractory high entropy alloy, HfTaTiVZr, with low activation constituent elements. Ion irradiation led to around 20% hardening for the high entropy alloy compared to 50% hardening for stainless steel under identical conditions. Superior irradiation resistance of the concentrated alloy was explained by the reduced mobility of point defects and self-healing ability.
ISSN:0022-3115
1873-4820
DOI:10.1016/j.jnucmat.2019.151955