Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Yong Hee Jo"'
Publikováno v:
Journal of Materials Research and Technology, Vol 30, Iss , Pp 1758-1767 (2024)
This study investigated toughness properties of FCC-based Fe45Co30Cr10V10Ni5-xMnx high entropy alloys (HEAs). Ductile-dimpled rupture mode in all alloys and test temperatures complicated precise explanations on Charpy impact energy, but the instrumen
Externí odkaz:
https://doaj.org/article/ee63902c9a38432ca321c1abe9df3089
Autor:
Yong Hee Jo, Hae-Rim Moon, Jae Wung Bae, Jisung Yoo, Seok Gyu Lee, Yun-Soo Lee, Hyoung-Wook Kim
Publikováno v:
Journal of Materials Research and Technology, Vol 26, Iss , Pp 8010-8024 (2023)
For the development of Al–Mg–Si strips with high mechanical performance via twin-roll casting (TRC) technology, it is necessary to understand through comparative analysis of traditional horizontal twin-roll casting (HTRC) and promising vertical t
Externí odkaz:
https://doaj.org/article/adf601be5a134488bc87f6aad091ef50
Publikováno v:
Journal of Materials Research and Technology, Vol 20, Iss , Pp 238-245 (2022)
Preaging (PA) is an important process to enhance the performance of automotive aluminum outer panels through regulating solute clustering. In this work, we investigated the effect of PA temperatures in the range of 60°C-225 °C on the hardness befor
Externí odkaz:
https://doaj.org/article/91f7d0689d16450481a30e3a8eaf0683
Publikováno v:
Journal of Materials Research and Technology, Vol 20, Iss , Pp 2629-2637 (2022)
We investigated the effect of different Cu additions (0.1 wt.% and 0.3 wt.%) on the precipitation activation energy and mechanical properties of Al–Mg–Si alloys under different prestraining levels (0%, 3%, and 5%). Tensile tests were performed be
Externí odkaz:
https://doaj.org/article/0aeebd8f897f4e13b2bdbaa9988fe602
Publikováno v:
Korean Journal of Metals and Materials. 60:329-339
The effect of Cu content on the microstructure and mechanical properties of Al-8.0Zn-2.5Mg-xCu (x: 0, 1, 2, 3) aluminum alloys manufactured by the twin-roll casting process was investigated. The Al-8.0Zn-2.5Mg-xCu alloy showed an increase in surface
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ec8d0714f9c226828fdf4c1b69c21177
https://doi.org/10.3365/kjmm.2022.60.4.329
https://doi.org/10.3365/kjmm.2022.60.4.329
Publikováno v:
Korean Journal of Metals and Materials. 60:83-93
The effects of dissolution of the η′ phase by solution treatment on the mechanical properties of A7075-T6 alloy were investigated. Immediately after solution treatment of the T6 sheet at 450 oC or higher, elongation significantly increased and dis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f395d5747b8219835269437ccf4f9de9
https://doi.org/10.3365/kjmm.2022.60.1.83
https://doi.org/10.3365/kjmm.2022.60.1.83
Publikováno v:
Journal of Materials Science & Technology: an international journal in the field of materials science, 90
Multi-principal element alloys usually exhibit outstanding strength and toughness at cryogenic temperatures, especially in CrMnFeCoNi and CrCoNi alloys. These remarkable cryogenic properties are attributed to the occurrence of deformation twins, and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::13f35ea3bb88bea3c612824b173de7d2
https://doi.org/10.1016/j.jmst.2021.02.034
https://doi.org/10.1016/j.jmst.2021.02.034
Autor:
Sunghak Lee, Junha Yang, Yong Hee Jo, Byeong-Joo Lee, Hyoung Seop Kim, Kyung-Yeon Doh, Won Mi Choi, Donghwa Lee, Seok Su Sohn
Publikováno v:
Journal of Materials Science & Technology. 76:222-230
We present a new class of metastable high-entropy alloys (HEAs), triggering deformation-induced martensitic transformation (DIMT) from face-centered-cubic (FCC) to body-centered-cubic (BCC), i.e., BCC-DIMT. Through the ab-initio calculation based on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c704d64cf47dfb2a95f9f22dfdef4433
https://doi.org/10.1016/j.jmst.2020.10.038
https://doi.org/10.1016/j.jmst.2020.10.038
Autor:
Baptiste Gault, Wenjun Lu, Seok Su Sohn, Yong Hee Jo, Dirk Ponge, Andrew J. Breen, Dong Geun Kim, Alisson Kwiatkowski da Silva
Publikováno v:
Acta Materialia. 194:106-117
Superplasticity proceeds from fine-grained structures and requires high intrinsic resistance to grain growth at the deformation temperature. Here, we show that a mixture of two kinds of brittle ordered phases enables superplastic behavior through dyn
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4aab462d640287c20c9682988c7f3944
https://doi.org/10.1016/j.actamat.2020.03.048
https://doi.org/10.1016/j.actamat.2020.03.048
Autor:
Min Cheol Jo, Byeong-Joo Lee, Seok Su Sohn, Dong Geun Kim, Kyung-Yeon Doh, Yong Hee Jo, Donghwa Lee, Hyoung Seop Kim, Sunghak Lee
Publikováno v:
Journal of Alloys and Compounds. 785:1056-1067
The metastable high- and medium entropy alloys (HEAs or MEAs) have drawn many attentions regarding deformation mechanisms and mechanical properties. Most of their studies have conducted under quasi–static or uniaxial tensile/compressive loading con
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9792d9ba5b165e2bd7a386794a330074
https://doi.org/10.1016/j.jallcom.2019.01.293
https://doi.org/10.1016/j.jallcom.2019.01.293