Soon Hyung Hong
KAIST
Composite numberUltimate tensile strengthFabricationComposite materialNanotechnologyMetallurgyGrain sizeMaterials scienceSpark plasma sinteringSinteringAlloyGrapheneChemical engineeringCarbon nanotubeTungstenMetalVolume fractionPowder metallurgyMicrostructureNanocomposite
370Publications
63H-index
9,783Citations
Publications 376
Newest
#1Sunghwan Jin (UNIST: Ulsan National Institute of Science and Technology)H-Index: 12
#2Byungchul Kang (KAIST)H-Index: 5
Last. Rodney S. RuoffH-Index: 165
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Abstract Abnormal grain growth of polycrystalline iron (Fe) foil up to grains of 1 cm × 2.2 cm in size, is reported. Pre-strain generated by plastic deformation promoted the abnormal grain growth during post-strain annealing, resulting in large area regions close to single crystal within the foil. The number of nucleus/nuclei and maximum grain size for the abnormal grain growth were highly affected by the plastic deformation conditions as they cause different stored energies in the foils. These ...
1 CitationsSource
#1Taeyeong Kong (KAIST)H-Index: 4
#2Byungchul Kang (KAIST)H-Index: 5
Last. Soon Hyung Hong (KAIST)H-Index: 63
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Abstract A Ni46Co22Al12Cr8Fe8Ti3Mo1 high entropy superalloy (Ni46 HESA) was fabricated by a powder metallurgical (PM) process. The composition of the alloy was determined through consideration of its PM processability. The alloy had a density of 7.82 g cm−3, which is lower than that of conventional Ni-base superalloys. The microstructure of the bulk alloy consisted of a face-centered cubic γ matrix and an L12 γ′ precipitate with minor amounts of Al2O3 and TiC inclusions. To leverage the advantag...
5 CitationsSource
#1Hyun-Jib Kim (New Generation University College)H-Index: 31
#1Hongbeom Kim (SNU: Seoul National University)H-Index: 15
Last. Seung-Hyun Hong (SNU: Seoul National University)H-Index: 23
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Source
#1Byungchul Kang (KAIST)H-Index: 5
#2Taeyeong Kong (KAIST)H-Index: 4
Last. Soon Hyung Hong (KAIST)H-Index: 63
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Abstract Light and strong AlxCrNbVMo (x = 0, 0.5, and 1.0) refractory high-entropy alloys (RHEAs) were designed and fabricated via a the powder metallurgical process. The microstructure of the AlxCrNbVMo alloys consisted of a single BCC crystalline structure with a sub-micron grain size of 2−3 μm, and small amounts (
3 CitationsSource
#1Sung Chan Yoo (KAIST)H-Index: 4
#2Joonhui Kim (KIST: Korea Institute of Science and Technology)H-Index: 4
Last. Soon Hyung Hong (KAIST)H-Index: 63
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Abstract Boron nitride nanosheet/copper (BNNS/Cu) nanocomposites were fabricated using a molecular-level mixing process. This process was facilitated by electrostatic interactions between negatively charged functional groups on the BNNSs and Cu metal precursor ions. The mixing process induced the formation of oxygen (O)-mediated bonding between BNNSs and the Cu matrix, which enabled enhanced dispersion of BNNSs and interfacial bonding with the Cu matrix. The mechanical properties of the resultin...
1 CitationsSource
#1Sung Chan Yoo (KAIST)H-Index: 4
#2Byungchul Kang (KAIST)H-Index: 5
Last. Soon Hyung Hong (KAIST)H-Index: 63
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Novel one-dimensional template-grown coaxial SiC@carbon nanotubes (SiC@CNTs) were fabricated using a chemical vapor deposition method. To facilitate the formation of SiC on CNT template, a molecular-level mixing process was used to coat the surface of commercial multiwalled carbon nanotubes (MWCNTs) by Fe2O3. These Fe-CNTs were transformed into SiC@CNT nanotubes, which were then mixed with Al6061 alloy and consolidated by spark plasma sintering to obtain Al6061-SiC@CNT nanocomposites. The additi...
3 CitationsSource
#1Joonhui Kim (KIST: Korea Institute of Science and Technology)H-Index: 4
#2Jaemin Cha (KAIST)H-Index: 6
Last. Soon Hyung Hong (KAIST)H-Index: 63
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Abstract Carbon fiber-reinforced polymer (CFRP) composites containing graphene nanoplatelets (GNPs) were prepared and characterized. Bonding via π−π interactions with poly(4-aminostyrene) (PAS) improved the degree of dispersion of the GNPs in an epoxy matrix. Differences in dispersion and reinforcement between pristine GNPs and PAS-GNPs were established by ultraviolet-visible spectroscopy and scanning electron microscopy. The PAS-GNP/epoxy nanocomposites were characterized by their fracture toug...
11 CitationsSource
#1Siwon Yu (KIST: Korea Institute of Science and Technology)H-Index: 5
#2Jun Yeon Hwang (KIST: Korea Institute of Science and Technology)H-Index: 26
Last. Soon Hyung Hong (KAIST)H-Index: 63
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Abstract This study aimed to quantify the 3D microstructure of short basalt fiber (BF)-reinforced polyamide 6,6 (PA6,6) composites, in an attempt to more accurately predict their mechanical properties. Thermoplastics are often reinforced with short fibers to improve their strength. BF is a natural fibrous material and a potential option for thermoplastic reinforcement. However, injection-molded composite materials, including thermoplastics, have microstructural properties that evolve during the ...
4 CitationsSource
#1Jongbok ParkH-Index: 1
Last. Ho Jin RyuH-Index: 29
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Source
#1Sung Chan Yoo (KAIST)H-Index: 4
#2Junho Lee (KAIST)H-Index: 9
Last. Soon Hyung Hong (KAIST)H-Index: 63
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Abstract Graphene reinforced copper matrix (graphene/Cu) nanocomposite powders are fabricated by the molecular-level mixing process and consolidated by spark plasma sintering and pressureless sintering process followed by hot isostatic pressing for the full densification. The addition of 1.2% volume fraction of graphene in Cu matrix resulted in 1.9 and 1.3 times increase in yield strength and elastic modulus, respectively, in comparison to those of pure Cu fabricated by same sintering process. H...
19 CitationsSource