Zobrazeno 1 - 10
of 56
pro vyhledávání: '"Gang Hee Gu"'
Autor:
Rae Eon Kim, Gang Hee Gu, Jeong Ah Lee, Yeon Taek Choi, Hyojin Park, Jaehun Kim, Min Hong Seo, Hyoung Seop Kim
Publikováno v:
Materials Research Letters, Vol 12, Iss 8, Pp 606-615 (2024)
High-strength materials are essential for applications in the structural industry. However, their limited formability restricts broader industrial use. This study proposes a novel methodology to achieve an excellent combination of formability and str
Externí odkaz:
https://doaj.org/article/0a9418719829463fae8fc0d27aa15a62
Autor:
Jungho Choe, Kyung Tae Kim, Jeong Min Park, Hyomoon Joo, Sang Guk Jeong, Eun Seong Kim, Soung Yeoul Ahn, Gang Hee Gu, Hyoung Seop Kim
Publikováno v:
Materials Research Letters, Vol 12, Iss 8, Pp 598-605 (2024)
Crack-free Al–Zn–Mg–Cu alloy, processed by laser powder bed fusion, displays a characteristic microstructure comprising fine equiaxed grains (EGs) and coarse columnar grains (CGs). Notably, the CGs show a high hardness compared to EGs due to th
Externí odkaz:
https://doaj.org/article/07c34fa5eefe4aae9ea44901a1d4b20a
Publikováno v:
Journal of Materials Research and Technology, Vol 27, Iss , Pp 6358-6366 (2023)
Heterostructured materials offer great promise as next-generation structural materials, providing excellent combinations of strength and elongation. However, the need for additional equipment for heterostructuring poses challenges for scalability. In
Externí odkaz:
https://doaj.org/article/51f075c5cf48463e999dd0d5a9c123db
Publikováno v:
Materials & Design, Vol 233, Iss , Pp 112289- (2023)
High-entropy alloys (HEAs) composed of multiple principal elements have attracted considerable interest in recent decades as a new class of metallic materials. Among them, the equi-atomic CoCrFeMnNi HEA system has great potential for application as a
Externí odkaz:
https://doaj.org/article/75f7bbb45b1b40e2b5ebbff60436927b
Autor:
Rae Eon Kim, Gang Hee Gu, Hyeonseok Kwon, Soung Yeoul Ahn, Jihye Kwon, Jeong Ah Lee, Yeon Taek Choi, Min Hong Seo, Hyoung Seop Kim
Publikováno v:
Journal of Materials Research and Technology, Vol 21, Iss , Pp 3514-3525 (2022)
The configurational design of heterostructures has received considerable attention to achieve a superior combination of strength and ductility. Although heterostructuring for enhanced tensile properties has been widely analyzed, studies on the effect
Externí odkaz:
https://doaj.org/article/7dde947d556d45cf9590a3e99ed2697d
Publikováno v:
Journal of Materials Research and Technology, Vol 21, Iss , Pp 2880-2890 (2022)
The advantages of heterostructured materials as structural materials include superior mechanical properties and the ability to tailor the strength-ductility combination via microstructure customization. To maximize heterostructure effects, this study
Externí odkaz:
https://doaj.org/article/0c33bed159e74a33855dff02998a1971
Autor:
Gang Hee Gu, Rae Eon Kim, Eun Seong Kim, Yongju Kim, Hyeonseok Kwon, Soung Yeoul Ahn, Min Hong Seo, Hyoung Seop Kim
Publikováno v:
Journal of Materials Research and Technology, Vol 20, Iss , Pp 128-138 (2022)
Macroscopic and microscopic mechanical properties, and damage behaviors of materials should be evaluated through multi-scale investigations to allow for practical industrial applications and promote user safety. Clad metal, a type of heterostructured
Externí odkaz:
https://doaj.org/article/aedb65cf396143bd9a56aaf96e333e78
Publikováno v:
Journal of Materials Research and Technology, Vol 19, Iss , Pp 2822-2830 (2022)
We propose a method for obtaining reliable wide strain range equivalent stress–strain curves from tensile testing by applying 3D digital image correlation. Herein, both the front and side surfaces of the specimen were identified by the 45° tilting
Externí odkaz:
https://doaj.org/article/ffb15032af5b401a9b1b7bb468ff15f6
Autor:
Gang Hee Gu, Jihye Kwon, Jongun Moon, Hyeonseok Kwon, Jongwon Lee, Yongju Kim, Eun Seong Kim, Min Hong Seo, Hyunsang Hwang, Hyoung Seop Kim
Publikováno v:
Journal of Materials Research and Technology, Vol 17, Iss , Pp 392-403 (2022)
In this study, the nano-to bulk-scale fracture behaviors of a dual phase (DP) steel were investigated by combining a micro-digital-image-correlation (micro-DIC) technique and the finite element method (FEM). The emergence of surface cracks and nano-t
Externí odkaz:
https://doaj.org/article/df7292d3ed1f4a8a9e48f8bbab23c991
Autor:
Yongju Kim, Gang Hee Gu, Peyman Asghari-Rad, Jaebum Noh, Junsuk Rho, Min Hong Seo, Hyoung Seop Kim
Publikováno v:
Materials Today Advances, Vol 13, Iss , Pp 100207- (2022)
The instrumented indentation technique has been investigated to efficiently evaluate the mechanical responses of materials with few limitations on the shape and size of the specimen. There have been attempts to discover a direct correlation between t
Externí odkaz:
https://doaj.org/article/64eed1c4f17d4a428255f3ff65dcaca0