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Calvin R. Lear

R&D Associate

[email protected]
865.341.4598

Dr. Calvin Lear joined the Radiation Effects & Microstructural Analysis Group (REMAG) at Oak Ridge National Laboratory in 2025 through a University of Tennessee-Oak Ridge Innovation Institute (UT-ORII) Fellowship. His research focuses on processing-structure-property-performance relationships for materials for nuclear energy applications and is a member of the UT-ORII Convergent Research Initiative for fusion materials, leading the study of hydrogen interactions with metals, ceramics, and radiation-induced defects. Dr. Lear is a user of the Low Activation Materials Development & Analysis (LAMDA) laboratory with expertise in analytical electron microscopy (SEM, S/TEM) and targeted sample fabrication (EBSD/EDS, FIB).

Previously, Dr. Lear was a staff scientist in the Dynamics of Materials Team of the Center for Integrated Nanotechnologies at Los Alamos National Laboratory, studying materials strength and aging with irradiation, performance of irradiated materials across mechanical and temperature extremes, and the effects of metal additive manufacturing and advanced joining techniques on irradiated performance. He received his BS in Materials Science & Engineering from Virginia Tech and his PhD in the same from the University of Illinois at Urbana-Champaign.

Links

Additional Publications

  1. E.R. Proehl, W. Zhong, D.J. Sprouster, C.R. Lear, M.M. Schneider, C.M. Parish, B.P. Eftink, L.L. Snead, S.J. Zinkle, and L. Tan, "Effect of stress on Laves phase precipitation in creep ruptured Grade 92 ferritic martensitic steel characterized by a novel accessible method", Acta Materialia 301, 2025, 121559, doi: 10.1016/j.actamat.2025.121559

  2. C.R. Lear, M.R. Chancey, R. Flanagan, J.G. Gigax, M.T. Hoang, D.R. Jones, H. Kim, D.T. Martinez, B.M. Morrow, N. Mathew, Y. Wang, N. Li, J.R. Payton, M.B. Prime, and S.J. Fensin, "Transition in helium bubble strengthening of copper from quasi-static to dynamic deformation", Acta Materialia 254, 2023, 118987, doi: 10.1016/j.actamat.2023.118987

  3. S. Samuha, J. Bickel, T. Mukherjee, T. DebRoy, T.J. Lienert, S.A. Maloy, C.R. Lear, and P. Hosemann, "Mechanical performance and microstructure of the grade 91 stainless steel produced via Directed Energy deposition laser technique", Materials & Design 227, 2023, 111804, doi: 10.1016/j.matdes.2023.111804

  4. J.C.F. Millett, S.J. Fensin, G.D. Owen, B.P. Eftink, Calvin Lear, G. Whiteman, and G.T. Gray, "The mechanical and microstructural response of single crystal aluminium to one dimensional shock loading: The effects of orientation", Acta Materialia 246, 2023, 118727, doi: 10.1016/j.actamat.2023.118727

  5. T. Mukherjee, T. DebRoy, T.J. Lienert, S.A. Maloy, C.R. Lear, and P. Hosemann, "Tempering kinetics during multilayer laser additive manufacturing of a ferritic steel", Journal of Manufacturing Processes 83, 2022, p. 105-115, doi: 10.1016/j.jmapro.2022.08.061

  6. C.R. Lear, J.G. Gigax, O. El Atwani, M.R. Chancey, H. Kim, N. Li, Y. Wang, and S.J. Fensin, "Effects of helium cavity size and morphology on the strength of pure titanium", Scripta Materialia 212, 2022, 114531, doi: 10.1016/j.scriptamat.2022.114531

  7. T.J. Lienert, C.R. Lear, T.E. Steckley, L.R. Lindamood, J.E. Gould, S.A. Maloy, and B.P. Eftink, "Projection-capacitor discharge resistance welding of 430 stainless steel and 14YWT", Journal of Manufacturing Processes 75, 2022, p. 1189-1201, doi: 10.1016/j.jmapro.2022.01.036

  8. C.R. Lear, J.G. Gigax, M.M. Schneider, T.E. Steckley, T.J. Lienert, S.A. Maloy, and B.P. Eftink, "Solid-State Welding of the Nanostructured Ferritic Alloy 14YWT Using a Capacitive Discharge Resistance Welding Technique", Metals 12(1), 2022, 23, doi: 10.3390/met12010023

  9. P. Hosemann, J. Duckering, A. Dong, J. Bickel, S.A. Maloy, T.J. Lienert, C.R. Lear, T. Mukherjee, and T. DebRoy, "Additive Manufacturing of structural materials for nuclear application and rapid mesoscale mechanical testing", Microscopy and Microanalysis 27(S1), 1 2021, p. 2154–2155, doi: 10.1017/S1431927621007765

  10. C.R. Lear, M. Song, M. Wang, and G.S. Was, "Dual ion irradiation of commercial and advanced alloys: Evaluating microstructural resistance for high dose core internals", Journal of Nuclear Materials 516, 2019, p. 125-134, doi: 10.1016/j.jnucmat.2019.01.014