Mechanical and Microstructural Study of Neutron-Irradiated Novel Alloy Systems

He, Lingfeng [Texas A&M University]; Holloway, Kyle Reese [Idaho National Laboratory]; Schulthess, Jason L [Idaho National Laboratory] (ORCID:0000000242897528); Harris, Phillip Absolom [Idaho National Laboratory]; Karimpilakkal, Anilas [Missouri University of Science and Technology]; Newkirk, Joseph [Missouri University of Science and Technology]; Jiang, Wen [North Carolina State University]

DOE OSTI · 3387226

Mechanical and Microstructural Study of Neutron-Irradiated Novel Alloy Systems

He, Lingfeng [Texas A&M University]·Holloway, Kyle Reese [Idaho National Laboratory]·Schulthess, Jason L [Idaho National Laboratory] (ORCID:0000000242897528)·Harris, Phillip Absolom [Idaho National Laboratory]·Karimpilakkal, Anilas [Missouri University of Science and Technology]·Newkirk, Joseph [Missouri University of Science and Technology]·Jiang, Wen [North Carolina State University]

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Abstract

Generation IV nuclear reactors require structural materials capable of withstanding high temperatures, corrosion, and radiation damage. Refractory high entropy alloys (RHEAs) show potential due to their resistance to irradiation damage, reduced void swelling, and microstructural stability. However, most previous studies have focused on thin films and ion irradiation, leaving the neutron irradiation response of bulk RHEAs largely unexplored. Mechanical behavior results show brittle behavior before and after irradiation. The addition of Zr led to an increase in hardness due to Zr-rich precipitates in the bulk microstructure. Lastly, hardness results showed an increase in hardening after irradiation indicating irradiation induced hardening has occurred.

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36 - MATERIALS SCIENCE Electron Microscopy High Entropy Alloys Mechanical Properties Neutron Irradiation

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He, Lingfeng [Texas A&M University], Holloway, Kyle Reese [Idaho National Laboratory], Schulthess, Jason L [Idaho National Laboratory] (ORCID:0000000242897528), Harris, Phillip Absolom [Idaho National Laboratory], Karimpilakkal, Anilas [Missouri University of Science and Technology], Newkirk, Joseph [Missouri University of Science and Technology], Jiang, Wen [North Carolina State University]. 2026-07-23. Mechanical and Microstructural Study of Neutron-Irradiated Novel Alloy Systems. https://www.osti.gov/biblio/3387226

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