NSUF 24-5122: Probing the effect of specific chemical elements on the irradiation induced defects formation and evolution in Multi-Principal Element Alloys (MPEAs) at high temperatures

In situ ion irradiations will be conducted on two families of high entropy alloys (the refractory series based on the ternary Mo-Nb-Ti system and the Fe-Cr-Ni system, to which specific elements are added respectively. The irradiations will be done in a very systematic way to follow the defect formation and evolution as a function of dose (at 500C) in each system. By comparing the irradiation induced defects evolution in situ to doses as high as 10 dpa in each composition we will be able to assess the role of chemical element in helping (or not) radiation resistance/behavior of the system. During a previous NSUF award which was awarded in 2022 ( NSUF #22-4476) we completed the irradiations at room temperature. Now we need to do the experiments at high temperature (500C) to complete the experimental matrix and substantiate the important effect of temperature.

Додаткова інформація

Поле	Значення
Awarded Institution	North Carolina State University
Embargo End Date	2026-06-20
Facility Tech Lead	Wei-Ying Chen
Irradiation Facilities	Intermediate Voltage Electron Microscopy (IVEM)-Tandem Facility
NSUF Call	FY 2024 RTE 3rd Call
PI	Djamel Kaoumi
Project Member	Professor Djamel Kaoumi, Professor - North Carolina State University (https://orcid.org/0000-0001-7055-0444)
Project Member	Dr Saikumaran Ayyappan, Post Doctoral Research Scholar - North Carolina State University (https://orcid.org/0000-0003-2939-3015)
Project Type	RTE