Zobrazeno 1 - 10
of 201
pro vyhledávání: '"HyunJoo Choi"'
Autor:
Man Jae SaGong, Jeong Ah Lee, Rae Eon Kim, Hyojin Park, Soung Yeoul Ahn, Hyunjoo Choi, Renhao Wu, Hyoung Seop Kim
Publikováno v:
Journal of Materials Research and Technology, Vol 32, Iss , Pp 3347-3356 (2024)
Direct energy deposition (DED) has gained attention in the field of metal repair because of its ability to integrate additively deposited material with preexisting components. Having the beneficial aspects of depositing right material, DED is evaluat
Externí odkaz:
https://doaj.org/article/7867616a33ff4b9596ed3e92ff43e543
Autor:
Chahee Jung, Seungin Nam, Hansol Son, Juyeon Han, Jaewon Jeong, Hyokyung Sung, Hyoung Seop Kim, Seok Su Sohn, Hyunjoo Choi
Publikováno v:
Journal of Materials Research and Technology, Vol 33, Iss , Pp 1470-1478 (2024)
Our study investigated the reinforcing effect of submicron-sized (100–500 nm) Al0.5CoCrCuFeNi high-entropy alloy particles (HEAps) on the tensile properties of Al matrix composites. The HEAps were refined to the submicron-sized level via a thermal
Externí odkaz:
https://doaj.org/article/72a48ebf5d1d49329a19413af9d5bdad
Autor:
Sangyul Ha, Saif Haider Kayani, Kyungjun Lee, Suwon Park, Hyunjoo Choi, Jae Bok Seol, Jung Gi Kim, Hyokyung Sung
Publikováno v:
Journal of Materials Research and Technology, Vol 30, Iss , Pp 3420-3429 (2024)
The nano-precipitates with minimal misfit strengthen Al–Zn–Mg alloys by impeding dislocation motion. However, grain boundary precipitates (GBPs) are known to have a completely incoherent relationship with the matrix, making them less effective in
Externí odkaz:
https://doaj.org/article/5ad2fcaf680440b38f0a30fbedcc42db
Autor:
Seungjin Nam, Sungyeom Kim, Daeyoung Kim, Sungho Song, Jinkyu Lee, Hyoung Seop Kim, Hyokyung Sung, Hyunjoo Choi
Publikováno v:
Journal of Materials Research and Technology, Vol 29, Iss , Pp 3126-3134 (2024)
The development of thermally conductive lightweight materials holds paramount importance for optimizing heat dissipation in automobile components. This study investigated three distinct techniques for coating graphene onto 6061 Al plates: direct, alu
Externí odkaz:
https://doaj.org/article/751e95853d524f04840ed1f8cf90fb3c
Autor:
Soung Yeoul Ahn, Farahnaz Haftlang, Eun Seong Kim, Ji Sun Lee, Sang Guk Jeong, Jae Bok Seol, Hyunjoo Choi, Hyoung Seop Kim
Publikováno v:
Additive Manufacturing Letters, Vol 7, Iss , Pp 100172- (2023)
This study explores cellular structures in TiC/B4CCoCrFeMnNi high-entropy composites (HECs) fabricated by direct energy deposition (DED) additive manufacturing process, investigating the role of TiC and B4C nano-paticles in enhancing mechanical pr
Externí odkaz:
https://doaj.org/article/d8b913f63c0a4073a1255063325f5bb0
Autor:
Young Beom Kwak, Eunkyu Lee, Hyunjoo Choi, Taemook Park, Ahram Kim, Jungon Kim, Jungho Yoon, Hye Hyun Yoo
Publikováno v:
Frontiers in Veterinary Science, Vol 10 (2023)
Red ginseng (RG) is a popular ingredient in traditional Korean medicine that has various health benefits. It is commonly taken orally as a dietary supplement; however, its potential interactions with concomitantly administered drugs are unclear. In t
Externí odkaz:
https://doaj.org/article/0945c633877444f9a9f0ae9cf81402c8
Autor:
Seungjin Nam, Dagam Park, Yongwook Song, Joohak Kim, Chahee Jung, Minsang Kim, Sehoon Kim, Jonghyuk Bae, Yongsung Kwon, Jaeho Moon, Heon Kang, Seok Su Sohn, Hyunjoo Choi
Publikováno v:
Materials & Design, Vol 233, Iss , Pp 112225- (2023)
We improved the interfacial bonding strength and heat transfer performance between wrought and cast Al alloy parts by implementing an interfacial Al-Si-Zn-based alloy coating layer. An additive manufacturing (AM)-based combinatorial experiment was em
Externí odkaz:
https://doaj.org/article/e39cc5ef21594affaa2d8c3f191ea282
Publikováno v:
Journal of Materials Research and Technology, Vol 21, Iss , Pp 4526-4536 (2022)
This study developed and optimized a novel and cost-effective method for producing AlN particles by heating Al powder in a nitrogen atmosphere at temperatures lower than the melting point of Al. As the size of the initial Al particles decreased, nitr
Externí odkaz:
https://doaj.org/article/b2901cc3fbf841a189f7d45f90eb9b9a
Autor:
Yeonsu Jeon, Sungwon Jeon, Kyungwhan An, Yeo Jin Kim, Byoung-Chul Kim, Hyojung Ryu, Whan-Hyuk Choi, HyunJoo Choi, Weon Kim, Sang Yeub Lee, Jang-Whan Bae, Jin-Yong Hwang, Min Gyu Kang, Seolbin An, Yeonkyung Kim, Younghui Kang, Byung Chul Kim, Jong Bhak, Eun-Seok Shin
Publikováno v:
Frontiers in Cardiovascular Medicine, Vol 10 (2023)
BackgroundAcute myocardial infarction (AMI) is one of the leading causes of death worldwide, and approximately half of AMI-related deaths occur before the affected individual reaches the hospital. The present study aimed to identify and validate gene
Externí odkaz:
https://doaj.org/article/261fece31fc3432bbeea71d89d801e73
Autor:
Haneul Jang, Sung-Hoon Kim, Nohyun Lee, Pil-Ryung Cha, Jae-Pyong Ahn, Hyunjoo Choi, Kon-Bae Lee
Publikováno v:
Journal of Materials Research and Technology, Vol 18, Iss , Pp 2331-2342 (2022)
In our previous work, we introduced a simple process of manufacturing Al matrix composites (AMCs) without vacuum or external pressure, which employs an exothermic reaction accompanying the nitridation of Al, called nitridation-induced self-forming Al
Externí odkaz:
https://doaj.org/article/6a71108128fd4c619f61f07ab9330972