Zobrazeno 1 - 10
of 135
pro vyhledávání: '"Hyun Uk Hong"'
Publikováno v:
Journal of Materials Research and Technology, Vol 30, Iss , Pp 2029-2040 (2024)
This study investigates the influence of γ′ precipitate morphology and size on the creep deformation of the cast superalloy IN738LC under conditions of 760–982 °C and 78–674 MPa. Two microstructures were obtained by different heat treatments.
Externí odkaz:
https://doaj.org/article/c951e0b87daa42dfbdba8ae8d93d5292
Autor:
Joonoh Moon, Gyuyeol Bae, Bo-Young Jeong, Chansun Shin, Min-Ji Kwon, Dong-Ik Kim, Dong-Jun Choi, Bong Ho Lee, Chang-Hoon Lee, Hyun-Uk Hong, Dong-Woo Suh, Dirk Ponge
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-10 (2024)
Abstract The degradation of mechanical properties caused by grain coarsening or the formation of brittle phases during welding reduces the longevity of products. Here, we report advances in the weld quality of ultra-high strength steels by utilizing
Externí odkaz:
https://doaj.org/article/1a06d64b1bc94bbc947de94beac3cdc4
Autor:
Dohoon Lee, Sangwoo Park, Chan-Hee Lee, Hyun-Uk Hong, Jongyeong Oh, Tae-Yeong So, Woo-Sung Kim, Dongyi Seo, Jeongho Han, Se-Hyun Ko, Byoungsoo Lee
Publikováno v:
Journal of Materials Research and Technology, Vol 28, Iss , Pp 2410-2419 (2024)
This study explored the correlation between microstructure and mechanical properties in additively manufactured Inconel 718 superalloys with low and high electron beam (EB) currents. The relative densities of the as-built Inconel 718 superalloys with
Externí odkaz:
https://doaj.org/article/def8efe644fd4764b155d6b9f46a83b3
Autor:
Heon-Young Ha, Kyeong-Won Kim, Seong-Jun Park, Chang-Hoon Lee, Tae-Ho Lee, Hyun-Uk Hong, Joonoh Moon
Publikováno v:
Journal of Materials Research and Technology, Vol 26, Iss , Pp 6135-6145 (2023)
Fe–20Mn–11.5Al–1.4C–5Cr (wt%) lightweight stainless steel (LWSS) was found to have equivalent or better resistance to pitting corrosion than Fe–11Cr (wt%) stainless steel (SS). The desirable resistance to pitting corrosion of the LWSS alloy
Externí odkaz:
https://doaj.org/article/bb72a58c7fbc4c8a8e1915eefd65ccdf
Autor:
Seungchan Cho, Jihye Lee, Sangmin Shin, Donghyun Lee, Minsoo Kim, Hansang Kwon, Moonhee Choi, Yoon-Seok Lee, Ilguk Jo, Hyun-Uk Hong, Junghwan Kim
Publikováno v:
Journal of Materials Research and Technology, Vol 25, Iss , Pp 7241-7253 (2023)
The high-temperature properties of titanium carbide (TiC)–reinforced stainless steel (SS) matrix composite, fabricated through infiltration process, were investigated across different temperatures. By adding highly concentrated and closely adjacent
Externí odkaz:
https://doaj.org/article/a0c54f4732604d29871fc027f6a1052f
Publikováno v:
Journal of Materials Research and Technology, Vol 19, Iss , Pp 3554-3567 (2022)
A comparative study of the microstructure and mechanical properties (tensile and high-cycle-fatigue) of Incoloy 901 repair welds produced via direct-energy-deposition (DED) and conventional tungsten-inert-gas (TIG) welding was conducted. The initial
Externí odkaz:
https://doaj.org/article/8d28bea2be8e4a9ba29af3796eeeecb7
Autor:
Joonoh Moon, Sung-Dae Kim, Chang-Hoon Lee, Hyo-Haeng Jo, Hyun-Uk Hong, Jun-Ho Chung, Bong Ho Lee
Publikováno v:
Journal of Materials Research and Technology, Vol 15, Iss , Pp 5095-5105 (2021)
Fire–resistant properties of Mo-/Nb-added structural steels were evaluated using hot tension tests and constant-load tests. Hot tension tests showed that an increase in the Mo and Nb contents led to a slow decrease in the strength as the holding ti
Externí odkaz:
https://doaj.org/article/fe38781d6ad141b7a75ae89bbcc3f194
Publikováno v:
Journal of Materials Science & Technology. 157:174-188
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::01a70b7d4bd953d16d31adebe9db4163
https://doi.org/10.1016/j.jmst.2023.01.047
https://doi.org/10.1016/j.jmst.2023.01.047
Autor:
Yoon-Hwan Jo, Tae-Hun Kim, Chiwon Kim, Joonoh Moon, Chang-Hoon Lee, Seung-Jin Jung, Hyun-Uk Hong
Publikováno v:
Journal of Welding and Joining. 40:295-304
In this study, the effects of Ti addition on the microstructure, the tensile properties at 550 ℃, and the thermal stability in gas tungsten arc (GTA) welds of reduced activation ferritic/martensitic (RAFM) steel were studied. Ti was added to promot
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b5b3efd119f70ebbdd26e86002ea17e
https://doi.org/10.5781/jwj.2022.40.4.1
https://doi.org/10.5781/jwj.2022.40.4.1
Autor:
Ilguk Jo, Jae Hyun Park, Bong Ho Lee, Seungchan Cho, Hyun-Uk Hong, Junghwan Kim, Jaekwang Lee, Sang-Kwan Lee, Sang-Bok Lee, Dong-Woo Suh, Wook Ryol Hwang
Publikováno v:
Journal of Materials Science & Technology. 107:252-258
This study shows that the mechanical strength of the composite of Fe matrix and titanium carbide (TiC) ceramic particles is significantly enhanced with addition of molybdenum (Mo) atoms. TiC reinforced Fe (Fe-0.2C-7Mn) composites with and without Mo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b1359301637f4d2958b8f38489473346
https://doi.org/10.1016/j.jmst.2021.08.047
https://doi.org/10.1016/j.jmst.2021.08.047