Welcome to Hahn Choo's Research Group
Hahn's research group focusses on physical and mechanical metallurgy studies of strucutral metallic alloys. Advanced materials with various length scales ranging from amorphous, nanocrystalline, to ultrafine structures are investigated for fundamental processing-structure-property relationship studies. Conventional alloys; such as stainless steels (TRIP, TWIP, Duplex, etc), magnesium alloys, aluminum alloys, and zirconium alloys; are also of tremendous interest to us due to their technological importance in transportation and energy industries.
One of the main characterization tools that we use in our reserach is "advanced diffraction technique" such as neutron and synchrotron x-ray diffraction. Our team collaborates very closely with the scientists at the national diffraction user facilities at Oak Ridge, Los Alamos, and Argonne National Laboratories. The diffraction measurements allow us to study the changes in microstructure, preferred orienations (texture), and internal stresses under various test environments, which help us investigate the fundamental physical and mechanical characteristics of the materials that are otherwise difficult to probe using conventional methods.
Our past team members now work at national laboratories as research staffs, universities as faculty members, and energy/nuclear/metallurgical/medical industries as technical staffs. Our team (current and past) and collaborators appreciate your interest in our research. Please feel free to contact any one of us, we will be happy to interact with you.