Dr. Chih-Chun Hsieh received his B.S. degree in Mechanical Engineering from Southern Taiwan University of Science and Technology, Taiwan, in 2002, his M.S. degree in Materials Science and Engineering from I-Shou University, Taiwan, in 2004, and his Ph.D. degree in Materials Science and Engineering from National Chung Hsing University, Taiwan, in 2010. He was a Visiting Scholar in the Department of Ferrous Metallurgy at RWTH Aachen University, Germany, from 2008 to 2009, and subsequently worked as a Postdoctoral Researcher in the Department of Materials Science and Engineering at National Chung Hsing University from 2011 to 2012. He is currently an Assistant Professor in the Department of Materials Science and Engineering at I-Shou University, Taiwan. In addition to his academic position, Dr. Hsieh has actively contributed to scholarly publishing and editorial service. He currently serves as an Editorial Board Member, Academic Editor, Section Editorial Board Member, and Guest Editor for Special Issues of Materials (MDPI). He has also served as an Academic Editor and Guest Editor for Special Issues of Metals (MDPI), and is currently an Editorial Board Member of Iron (MDPI). His research interests include chemical composition analysis, phase transformations, steels and metallic materials, welding metallurgy, metallography, and physical metallurgy.