NSUF - Nuclear Science User Facilities

Michael Moorehead

Profile Information
Name
Dr. Michael Moorehead
Institution
Idaho National Laboratory
Position
Russell L. Heath Distinguished Postdoc
h-Index
6
ORCID
0000-0001-8216-5244
Expertise
Additive Manufacturing, Atom Probe Tomography (ATP), High Entropy Alloy (HEA), Ion-Irradiation, Transmission Electron Microscopy (TEM)
Publications:
"In situ microstructural evolution in face-centered and body-centered cubic complex concentrated solid-solution alloys under heavy ion irradiation" Michael Moorehead, Calvin Parkin, Mohamed Elbakhshwan, Jing Hu, Wei-Ying Chen, Meimei Li, Lingfeng He, Kumar Sridharan, Adrien Couet, Acta Materialia Vol. 198 2020 85-99 Link
This study characterizes the microstructural evolution of single-phase complex concentrated solid- solution alloy (CSA) compositions under heavy ion irradiation with the goal of evaluating mecha- nisms for CSA radiation tolerance in advanced fission systems. Three such alloys, Cr 18 Fe 27 Mn 27 Ni 28 , Cr 15 Fe 35 Mn 15 Ni 35 , and equimolar NbTaTiV, along with reference materials (pure Ni and E90 for the Cr- FeMnNi family and pure V for NbTaTiV) were irradiated at 50 K and 773 K with 1 MeV Kr ++ ions to vari- ous levels of displacements per atom (dpa) using in-situ transmission electron microscopy. Cryogenic irra- diation resulted in small defect clusters and faulted dislocation loops as large as 12 nm in face-centered cubic (FCC) CSAs. With thermal diffusion suppressed at cryogenic temperatures, defect densities were lower in all CSAs than in their less compositionally complex reference materials indicating that point defect production is reduced during the displacement cascade stage. High temperature irradiation of the two FCC CSA resulted in the formation of interstitial dislocation loops which by 2 dpa grew to an average size of 27 nm in Cr 18 Fe 27 Mn 27 Ni 28 and 10 nm in Cr 15 Fe 35 Mn 15 Ni 35 . This difference in loop growth kinet- ics was attributed to the difference in Mn-content due to its effect on the nucleation rate by increasing vacancy mobility or reducing the stacking-fault energy.#171118
Presentations:
"Advanced Characterization of Irradiated UO2 Fuel" Lingfeng He, Michael Moorehead, Brandon Miller, Jason Harp, Xianming Bai, TMS 2018 March 11-15, (2018)
"Advanced Studies of Radiation Damage in Compositionally Complex Alloys" Haiming Wen, Dane Morgan, Adrien Couet, Nathan Curtis, Michael Moorehead, Mukesh Bachhav, Sohail Shah, Phalgun Nelaturu, Junliang Liu, Daniel Murray, Bao-Phong Nguyen, Dan Thoma, ” The Minerals, Metals, & Materials Society Conference March 3-7, (2024)
"High-Throughput Study of Ion Irradiation and Oxidation Responses in Multi-Principal Element Alloys" Nathan Curtis, Benoit Queylat, Michael Moorehead, Daniel Murray, Phalgun Nelaturu, Kim Kriewaldt, Bao-Phong Nguyen, Ryan Jacobs, Mukesh Bachhav, Dan Thoma, Dane Morgan, Adrien Couet, The Minerals, Metals, & Materials Society Conference March 19-23, (2023)
"Investigation of High-Entropy Alloys Compositions for Radiation Damage Applications" Calvin Parkin, Michael Moorehead, Zefeng Yu, Kumar Sridharan, Adrien Couet, ANS Annual Meeting 2018 June 18-22, (2018)
"Machine Learning on High-Throughput Databases of Irradiation Response and Corrosion Properties of Selected Compositionally Complex Alloys for Structural Nuclear Materials" Nathan Curtis, Benoit Queylat, Michael Moorehead, Daniel Murray, Phalgun Nelaturu, Kim Kriewaldt, Nate Eklof, Bao-Phong Nguyen, Ryan Jacobs, Mukesh Bachhav, Dan Thoma, Dan Thoma, Dane Morgan, Lianyi Chen, Adrien Couet, Advanced Materials and Manufacturing Technologies Program Review May 21-23, (2024)
"Microstructural Characterization of High-entropy Alloy Ion Irradiated at Cryogenic Temperatures" Michael Moorehead, Calvin Parkin, Lingfeng He, Jing Hu, Meimei Li, Adrien Couet, Kumar Sridharan, TMS 2019 March 10-14, (2019)
"Probing Irradiation Response in CrFeMnNi Compositionally Complex Alloys Using High-Throughput Methodology" Nathan Curtis, Michael Moorehead, Mukesh Bachhav, Benoit Queylat, Phalgun Nelaturu, Daniel Murray, Bao-Phong Nguyen, Nate Eklof, Zack Rielley, Dan Thoma, Dane Morgan, Adrien Couet, The Minerals, Metals, & Materials Society Conference March 23-27, (2025)
NSUF Articles:
DOE Awards 33 Rapid Turnaround Experiment Research Proposals - Projects total approximately $1.5 million These projects will continue to advance the understanding of irradiation effects in nuclear fuels and materials in support of the mission of the DOE Office of Nuclear Energy. Monday, May 14, 2018 - Calls and Awards
Department of Energy Nuclear Science User Facilities Awards 29 Rapid Turnaround Experiment Proposals - Awarded projects total nearly $1.14M in access awards Tuesday, June 8, 2021 - News Release, Calls and Awards
NSUF awards 24 Rapid Turnaround Experiment proposals - Approximately $1.42M has been awarded. Wednesday, February 8, 2023 - Calls and Awards

About Us

The Nuclear Science User Facilities (NSUF) is the U.S. Department of Energy Office of Nuclear Energy's only designated nuclear energy user facility. Through peer-reviewed proposal processes, the NSUF provides researchers access to neutron, ion, and gamma irradiations, post-irradiation examination and beamline capabilities at Idaho National Laboratory and a diverse mix of university, national laboratory and industry partner institutions.

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