UHP Materials Processing Laboratory
UHP Materials Processing Laboratory
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The UHP Materials Processing Laboratory specializes in cutting-edge research and advanced education on ultra high performance (UHP) metallic materials, with a focus on ultra high precision and ultra high purity processing technologies.
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Recent Research Highlights Include:
• Hot cracking during welding and additive manufacturing (AM) of advanced superalloys for next-generation gas turbines and nuclear reactors
• Laser-based joining and packaging technologies for electric vehicle (EV) battery systems and power semiconductor modules
• Multiphysics computational modeling of solidification phenomena
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Achievements Over the Past Three Years:
• Over 20 peer-reviewed journal publications on weld-induced hot cracking phenomena
• More than 50 presentations at leading academic and industrial conferences
• 10 patent applications and registrations for novel processing technologies to control hot cracking during welding
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We are committed to leading innovation in high-performance materials processing to support the future of energy and mobility technologies
Key Publications (Last 3 years)
Key Publications (Last 3 years)
Min-chang Shin and Eun-Joon Chun*, New Findings on Reduced Solidification Brittle Temperature Range in Epitaxially Grown CMSX-4 Superalloy Welds via Varestraint Testing, Materials Today Communications, 2025. https://doi.org/10.1016/j.mtcomm.2024.111201
Sung-Jin Lee and Eun-Joon Chun* et al., Effects of Hf and carbide formation behavior on solidification cracking susceptibilities of 247LC superalloy welds, Materials Chemistry and Physics, 2024. https://doi.org/10.1016/j.matchemphys.2024.129147.
Hye–Eun Jeong, and Eun-Joon Chun* et al., Effect of local carbide formation behavior on repair weld liquation cracking susceptibility for long-term-serviced 247LC superalloy, Journal of Materials Research and Technology, 2024. https://doi.org/10.1016/j.jmrt.2023.12.003.
Ye-Ji Lee and Eun-Joon Chun*, Correlation Between Solidification Cracking and Composition Distribution in Green Laser Welds of Lithium-Ion Battery Busbars, Korean Journal of Metals and Materials, 2025. https://doi.org/10.3365/KJMM.2025.63.5.356
Eun-Joon Chun* et al., Liquation Crack-free Welding Strategy for 247LC DS Superalloy by Control of Pipeline Diffusion via Ultra-high-speed Laser Beam Scanning, Science and Technology of Welding Joining, 2023. https://doi.org/10.1080/13621718.2023.2189367
Upcoming Conference Participation
Upcoming Conference Participation
Min-chang Shin and Eun-Joon Chun* , Epitaxial Solidification and Cracking Behavior of CMSX-4 Welds: Assessing Additive Manufacturing Integrity, MS&T25: Materials Science & Technology, Columbus, OH, USA
Yeji You and Eun-Joon Chun* ,Precision Laser Joining of Copper Busbars with Minimal Thermal Damage for Power Semiconductor Modules, MS&T25: Materials Science & Technology, Columbus, OH, USA
Lab members
Lab members
Master candidate
Master candidate
Yeji You (yeji_you@pukyong.ac.kr): Precision joining techniques for power semiconductor module
Minchang Shin (alsckd1813@pukyong.ac.kr): Weldability and hot cracking susceptibility of single-crystal superalloys
Jaehyun Park (replay1120@pukyong.ac.kr): Weldability assessment of heat-resistant alloys for Small Modular Reactor (SMR) applications
Sungjin Lee (tjdwls2@pukyong.ac.kr): Weldability and hot cracking susceptibility of directionally-solidified superalloys
Jungmin Oh (jmoh5@pukyong.ac.kr): Weldability assessment of heat-resistant alloys for Small Modular Reactor (SMR) applications
Heejin Shin (shjin01@pukyong.ac.kr): Welding technologies for Lithium-ion battery pack assembly
Integrated B.S.–M.S. Program
Integrated B.S.–M.S. Program
Sihyun Koo (tus0313@pukyong.ac.kr): Computational modelling of weld hot cracking phenomena
Heeeun Kim (khe2883@pukyong.ac.kr): Computational modelling of weld hot cracking phenomena
Ph.D. candidate
Ph.D. candidate
Hyeeun Jeong (Industry-University Collaboration @KIMS)
Kyeongmin Kim (Industry-University Collaboration @RIMS)
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