Biography

Hahn Choo received his bachelor’s degree in Metallurgical Engineering from Sung Kyun Kwan University, Seoul, Korea in 1988; and his MS and PhD in Metallurgical and Materials Engineering from Illinois Institute of Technology in 1991 and 1998, respectively. His PhD dissertation research included synthesis and processing of high-temperature intermetallic alloys and composites, and neutron diffraction characterization of mechanical behavior. In 1998, Choo joined Los Alamos Neutron Science Center (LANSCE) as a postdoc. His research at LANSCE was focused on the experimental and theoretical investigation of composite micromechanics using neutron diffraction and finite element modeling. In 2001, Choo joined the Department of Materials Science and Engineering at the University of Tennessee as a tenure-track assistant professor. He was also a Joint Faculty at Oak Ridge National Laboratory from 2002 to 2011. Choo’s current research thrust area focusses on the manufacturing – microstructure – property relationship studies of structural alloys, often using neutron and synchrotron x-ray diffraction and imaging techniques as characterization methods. As of 2024, Choo has authored and co-authored more than 200 technical journal papers.

Education

• PhD, Illinois Institute of Technology
  Synthesis and Processing of Advanced Structural Materials, Neutron Diffraction Characterization

Professional Service

• Member: TMS, MRS, ASM International, NSSA (Neutron Scattering Society of America)
• Member of Board of Review: Metallurgical and Materials Transactions A

Awards & Recognitions

• 2019, 2013 Leon and Nancy Cole Superior Teaching Award
• 2015 Chancellor’s Award for Excellence in Teaching
• 2014 TCE Teaching Fellow Award
• 2012 Top Cited Article Award, Journal of Non-Crystalline Solids (2007-2011), Elsevier
• 2011, 2008, 2006, 2005 Engineering Research Fellow Award, College of Engineering, UT
• 2010 Faculty Award for Excellence in Teaching, MSE Dept, UT
• 2006 Professional Promise in Research and Creative Achievement Award, Chancellor’s Citation, University of Tennessee
• 2004 Outstanding Young Faculty Researcher Award, MSE Dept, UT

Research Publications

Google Scholar

1. Li, P. Hou, R. Kamath, Z. Feng, K. An, and H. Choo, “Real-Time Evolution of Texture and Temperature during Friction Stir Processing of a Magnesium Alloy: An Operando Neutron Diffraction Study,” Acta Mater., 270, 119842 (2024). [DOI]
2. Kamath, P. Nandwana, Y. Ren, and H. Choo, “Solidification Texture, Variant Selection, and Phase Fraction in a Spot-Melt Electron-Beam Powder Bed Fusion Processed Ti-6Al-4V,” Additive Manufacturing, 46, 102136 (2021). [DOI]
3. Hou, Y. Li, W. Zhang, D. Chae, J.S. Park, Y. Ren, Y. Gao, and H. Choo, “Synchrotron X-ray Diffraction and Crystal Plasticity Modeling Study of Martensitic Transformation, Texture Development, and Stress Partitioning in Deep-Drawn TRIP Steels,” Materialia, 18, 101162 (2021). [DOI]
4. Li, P. Hou, Z. Wu, Z. Feng, Y. Ren, and H. Choo, “Dynamic Recrystallization of a Wrought Magnesium Alloy: Grain Size and Texture Maps and Their Application for Mechanical Behavior Predictions,” Materials & Design, 202, 109562 (2021). [DOI]
5. Choo, L.P. White, X. Xiao, C.C. Sluss, D. Morin, and E. Garlea, “Deformation and Fracture Behavior of a Laser Powder Bed Fusion Processed Stainless Steel: In Situ Synchrotron X-ray Computed Microtomography Study,” Additive Manufacturing, 40, 101914 (2021). [DOI]