Advanced ferrous materials
Advanced thermo-mechanical treatment

1989 ~ 1994 Research engineer, RIST, Pohang, Korea
1998 ~ 2000 Research assistant prof., Colorado School of Mines, USA
2001 Research engineer, Bethlehem Steel, USA
2007 ~ 2008 Visiting professor, Colorado School of Mines, USA
2007 ~ present POSCO-affiliated professor
2009 ~ present Director, Research Institute of Iron and Steel Technology, Yonsei Univ.
2009 ~ present Professor, Yonsei Univ.
2016 Visiting professor, Kyoto Univ., Japan
2018 ~ present Affiliate faculty, GIFT, POSTECH
2019 ~ present Editor-in-Chief, Korean Journal of Metals and Materials

2012 SeAh Haiam Scholastic Award, The Korean Institute of Metals and Materials
2013 Future 100th Skills and Leading Roles for Leading 2020’s Korean Industry Award, The National Academy of Engineering of Korea
2018 Academic Award, The Korean Society for Heat Treatment