Zobrazeno 1 - 10
of 339
pro vyhledávání: '"Byeong-Joo Lee"'
Autor:
Young Mok Kim, Tae Jin Jang, Donghyeon Chae, Boryung Yoo, Sang-Ho Oh, Hyungjo Seo, Seungjin Nam, Dogyun Byeon, Joungwook Kim, Byeong-Joo Lee, Pyuck-Pa Choi, Alireza Zargaran, Seok Su Sohn
Publikováno v:
Journal of Materials Research and Technology, Vol 32, Iss , Pp 1589-1601 (2024)
In response to the persistent challenge of optimizing the tribological performance of engineered coatings without compromising material hardness, this study investigates the potential of medium-entropy CrCoNiCu alloy films. Fabricated via sputtering
Externí odkaz:
https://doaj.org/article/39143fe2b027409c94f6569ea1a706fa
Autor:
Young Mok Kim, Tae Jin Jang, Wansu Song, Hyeon-Seok Do, Sang-Ho Oh, Gyeongbeom Lee, Joungwook Kim, Eunsoo Yang, Byeong-Joo Lee, Ho Jang, Seok Su Sohn
Publikováno v:
Journal of Materials Research and Technology, Vol 30, Iss , Pp 5429-5443 (2024)
High- or medium-entropy alloys have gained attention in coatings attributed to high wear resistance, with the formation of an amorphous phase. However, tailoring the crystal structure has limitations in improving both friction and wear characteristic
Externí odkaz:
https://doaj.org/article/cce8bc3b2fcd42c9be0347ec80f32999
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-12 (2023)
Abstract This study introduces a method that is applicable across various powder materials to predict process conditions that yield a product with a relative density greater than 98% by laser powder bed fusion. We develop an XGBoost model using a dat
Externí odkaz:
https://doaj.org/article/956bf8a58f91496b816087ace7389365
Autor:
Eun Seong Kim, Jeong Min Park, Gangaraju Manogna Karthik, Kyung Tae Kim, Ji-Hun Yu, Byeong-Joo Lee, Hyoung Seop Kim
Publikováno v:
Materials Research Letters, Vol 11, Iss 7, Pp 586-594 (2023)
This study investigated cracking phenomena in 316L stainless steel (SS316L) and Inconel 718 (IN718) composition-graded material (CGM) additively manufactured by the direct energy deposition (DED) process. In order to prevent cracking in the CGM, ther
Externí odkaz:
https://doaj.org/article/c5005ecf2c554db7aaa3a685ca375d64
Publikováno v:
npj Computational Materials, Vol 9, Iss 1, Pp 1-13 (2023)
Abstract A neural network model is developed to search vast compositional space of high entropy alloys (HEAs). The model predicts the mechanical properties of HEAs better than several other models. It’s because the special structure of the model he
Externí odkaz:
https://doaj.org/article/410ddb6fa69a41c4b28b35805daa0da1
Autor:
Hyun Chung, Won Seok Choi, Hosun Jun, Hyeon-Seok Do, Byeong-Joo Lee, Pyuck-Pa Choi, Heung Nam Han, Won-Seok Ko, Seok Su Sohn
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-10 (2023)
Commercial maraging alloys provide high strength and toughness by traditional precipitation strengthening mechanism. Here, the authors demonstrate a new strategy involving deformable precipitates and their dynamic phase transformation resulting in a
Externí odkaz:
https://doaj.org/article/49f9db1631d6405a8cfbdd567acf223b
Autor:
Hyunbin Nam, Seonghoon Yoo, Jeong Won Ha, Byeong-Joo Lee, Sangwoo Song, Youngsang Na, Namhyun Kang
Publikováno v:
Journal of Materials Research and Technology, Vol 19, Iss , Pp 4857-4866 (2022)
This study investigated the gas tungsten arc (GTA) weldability of cold-rolled CoCrFeMnNi high-entropy alloys (HEAs) using Cu-coated HEA filler, specifically through the application of various post–weld heat treatment (PWHT) temperatures. The GTA we
Externí odkaz:
https://doaj.org/article/e1b2492fe3e142098c1245c32983a3c1
Publikováno v:
Materials & Design, Vol 225, Iss , Pp 111439- (2023)
Prediction of microstructure evolution is important to design structural materials, and grain growth is the most fundamental but important one which determines mechanical properties. The Monte Carlo Potts is a widespread simulation model for grain gr
Externí odkaz:
https://doaj.org/article/eaf005f59188400b9fcfd9b7db07e351
Publikováno v:
Journal of Magnesium and Alloys, Vol 9, Iss 1, Pp 317-335 (2021)
Al, Ca, and Zn are representative commercial alloying elements for Mg alloys. To investigate the effects of these elements on the deformation and recrystallization behaviors of Mg alloys, we develop interatomic potentials for the Al–Ca, Al–Zn, Mg
Externí odkaz:
https://doaj.org/article/16e6c089346c455cb789c791d61da412
Autor:
Daixiu Wei, Xiaoqing Li, Weicheng Heng, Yuichiro Koizumi, Feng He, Won-Mi Choi, Byeong-Joo Lee, Hyoung Seop Kim, Hidemi Kato, Akihiko Chiba
Publikováno v:
Materials Research Letters, Vol 7, Iss 2, Pp 82-88 (2019)
We developed a series of Co-rich CoxCr25(FeNi)75−x (x = 35, 45, 55, 65) high entropy alloys with improved strength and/or ductility, derived from lowering the stacking fault energy (SFE) and reducing the fcc phase stability of the equiatomic CoCrFe
Externí odkaz:
https://doaj.org/article/33622d8fe73d4635b858cb055f769d33