Education

• 2020.02 - 2024.02

Ph.D. in Graduate Institute of Ferrous & Energy Materials Technology, POSTECH, Korea

• 2018.03 - 2020.02

M.S. in Graduate Institute of Ferrous Technology, POSTECH, Korea

• 2013.03 - 2018.02

B.S. in Materials Science and Engineering, Yonsei University, Korea

Publication

• Dongwon Lee, Gun-Young Yoon, Seong-Jun Park, Jae Sane Lee, Yoon-Yk Heo*, M23C6-assisted formation mechanism of grain boundary cellular structure and its role on the brittle fracture in an austenitic Fe-Mn-Al-C lightweight alloy, Journal of Alloys and Compounds, 172865 (2023).
• T.T.T. Trang, Dongwon Lee, Yoon-Uk Heo*, Direct observation of the ledge-typed twin boundary in a martensitic steel, Acta Materialia, 119285 (2023).
• Aman Gupta, Ki-Seong Park, Tae-Hyeon Yoo, Abhishek Kumar Singh, Dongwon Lee, Yoon-Uk Heo*, Shi-Hoon Choi*, Unraveling the self-annealing behavior of cryo-rolled Cu-Fe-P alloy sheets: Evidence and implications, International Journal of Plasticity, 167, 103672 (2023).
• Dongwon Lee, T.T.T. Trang, Yoon-Uk Heo*, Role of Dislocation Climb on Twin Boundary and Antiphase Boundary Formations in inverse-spinel MnAl2O4, Journal of Alloys and Compounds, 170526 (2023).
• Aman Gupta, Lalit Kaushik, Tae-Hyeon Yoo, Jin Woo Lee, Young-Kil Kim, Dongwon Lee, Yoon-Uk Heo**, Shi-Hoon Choi*, Unveiling the Self-Annealing Phenomenon and Texture Evolution in Room-Temperature-Rolled Cu-Fe-P Alloy Sheets, International Journal of Plasticity, in press, 103473 (2022).
• T.T.T. Trang, Chang-Gon Jeong, Dongwon Lee, Yoon-Uk Heo*, Nano‐sized Lamellar Structures and Tensile Properties of Intercritical‐annealed Medium Mn Steels Containing Multi‐phases. Steel Research International, 2200233 (2022).
• Dongwon Lee, Heo Yoon-Uk*, Jae Sang Lee, Won-Tae Cho, Unhae Lee, Myeong-Hun Kang, Chang Hee Yim, AlN-assisted internal oxidation behavior in Al-containing high Mn steels, Materials Characterization, 111967 (2022)

Patents

[registration]

HIGH MANGANESE SLAB HAVING REDUCED RATE OF SURFACE CRACKING AND METHOD OF MANUFACTURING THE SAME AND HIGH MANGANESE STEEL SHEET USING THE SAME

(표면 균열이 저감된 고망간 주편 및 그 제조방법과 이를 이용한 고망간 강판)

- Yoon-Uk Heo, Jae-Sang Lee, Chang Hee Yim, Kim Sung Kyu, Cho Won Tae, Kang Myeong Hun, Lee Dong Won, Joon-Hong Min, Kwon Sanghum (2021)

Awards

• 2023 대한금속재료학회 추계학술대회 우수 구두 발표상, "Inverse-spinel 구조를 가지는 MnAl2O4에서 전위 Climb에 의한 twin boundary와 antiphase boundary 형성 거동 해석"
• 2022 한국현미경학회 추계학술대회 우수 구두 발표상, "Fe-Mn-Al-C 오스테나이트계 경량강의 시효에 따른 입계 석출이 파괴 거동에 미치는 영향 분석"
• 2021 Asia Steel Young Steel Scientist Award, "Evolution of microstructure and mechanical properties during aging treatment of an Fe-Mn-Al-C austenitic lightweight steel"