Peer-reviewed Journals
The full list of publications can be viewed on Google scholar
H. J. Im*, J. Santos, C. Liu, C. Campbell, D. Dunand. Reduction of crack formation, microstructure and mechanical properties of γ’-strengthened Co-Ni-Al-W superalloys processed by selective laser melting. Additive Manufacturing, 76:103790, 2023.
K. Ryou, H. J. Im, J. Park, P.-P Choi. Multiple mechanisms of preventing hot cracking in direct-laser-deposited Ni-based superalloy through Hf addition. Materials & Design, 234:112298, 2023.
H. J. Im^, K. Ryou^, T. H. Kang, S. Jimbo, S. Nambu, J. Han, P.-P Choi. Thermal-driven microstructural changes and mechanical properties of 15-5PH stainless steel during directed energy deposition. Additive Manufacturing, 74:103729, 2023.
M. S. Jeong, T. M. Park, D.-I Kim, H. Fujii, H. J. Im, P.-P Choi, S.-J Lee, J. Han. Improving toughness of medium-Mn steels after friction stir welding through grain morphology tuning. Journal of Materials Science & Technology, 118:243–254, 2022.
H. J. Im, S. K. Makineni, C.-S Oh, B. Gault, P.-P Choi. Elemental sub-lattice occupation and microstructural evolution in γ/γ’ Co-Ti-Mo-Cr alloys. Microscopy and Microanalysis, 28(4):1335–1339, 2022.
H. J. Im, W. S. Choi, K. Ryou, T. H. Kang, J. B. Seol, W.-S Ko, P.-P Choi. Enhanced microstructural stability of γ/γ’-strengthened Co-Ti-Mo-based alloys through Al additions. Acta Materialia, 214:117011, 2021.
H. J. Im, S. Lee, W. S. Choi, S. K. Makineni, D. Raabe, W.-S Ko, P.-P Choi. Effects of Mo on the mechanical behavior of γ/γ’-strengthened Co-Ti-based alloys. Acta Materialia, 197:69–80, 2020.
J. Han, B. Yoo, H. J. Im, C.-S Oh, P.-P Choi. Microstructural evolution of the heat affected zone of a Co-Ti-W alloy upon laser cladding with a CoNiCrAlY coating. Materials Characterization, 158:109998, 2019.
B. Yoo, H. J. Im, J. B. Seol, P.-P Choi. On the microstructural evolution and partitioning behavior of L12-structured γ’-based Co-Ti-W alloys upon Cr and Al alloying. Intermetallics, 104:97–102, 2019.
H. J. Im, S. K. Makineni, B. Gault, F. Stein, D. Raabe, P.-P Choi. Elemental partitioning and site-occupancy in γ/γ’ forming Co-Ti-Mo and Co-Ti-Cr alloys. Scripta Materialia, 154:1590-162, 2018.
H. J. Im, G. H. Jun, D. J. Lee, H. J. Ryu, S. H. Hong. Enhanced electromagnetic interference shielding behavior of graphene nanoplatelet/Ni/Wax nanocomposites. Journal of Materials Chemistry C, 5(26):6471–6479, 2017.
(*Corresponding author; ^Co-authors)
Book Chapters
P.-P Choi, H. J. Im, C. Jung, K. H. Ryou, H. Jeong. Atom Probe Tomography: Unveiling the elemental distribution in nanostructured materials with near-atomic resolution. Reference Module in Materials Science and Materials Engineering, 2020, Elsevier.