Chanho Lee is a second year graduate student in the Department of Materials Science and Engineering at the University of Tennessee, Knoxville (UTK). He previously received his M.S. from the Department of Materials Science and Engineering (MSE) at Sejong University in Korea. His studies there focused on the effects of additional elements on the microstructure and mechanical properties of Ti-Fe ultrafine eutectic alloys, and he published four author and co-author papers and received one patent associated with his master’s research.
Since joining the UTK MSE Department in 2014, Mr. Lee has been working on studying the microstructure evolution and associated mechanical properties of high-entropy alloys (HEAs) under the guidance of Prof. Liaw. Mr. Lee has excelled in the fabrication of metal alloys such as HEAs and bulk metallic glasses (BMGs) using arc-melting suction casting equipment. He is currently conducting neutron diffraction studies on the VULCAN (engineering materials diffractometer) and NOMAD (Nanoscale-Ordered MAterials Diffractometer) instruments at the Spallation Neutron Source (SNS) located at Oak Ridge National Laboratory (ORNL) for a detailed understanding of the phase transformations and mechanical mechanisms. Mr. Lee is using additional characterization tools including scanning electron microscopy (SEM), transmission electron microscopy (TEM), and electron backscatter diffraction (EBSD) to examine the microstructural evolution of the HEAs he fabricates. He is also obtaining nano-scale microstructural information using atom probe tomography (APT) at the Center for Nanophase Materials Science Annual Report 21
(CNMS) at ORNL. The goal of linking the fabrication with details of the resulting micro- and nano-structure of the HEAs is to further develop novel advanced materials with superior mechanical properties.