Zobrazeno 1 - 10
of 274
pro vyhledávání: '"Young-kook Lee"'
Publikováno v:
Journal of Materials Research and Technology, Vol 33, Iss , Pp 7862-7887 (2024)
Hot-stamping (HS) has emerged as an effective process for producing steel components with ultra-high strength (UHSS) and complex geometries while minimizing or eliminating springback. HS steels present significant advantages for weight reduction and
Externí odkaz:
https://doaj.org/article/e2dabe9ff6704029a165d9dbcd090079
Publikováno v:
Journal of Materials Research and Technology, Vol 33, Iss , Pp 2672-2682 (2024)
To develop medium-Mn steels with an ultimate tensile strength (UTS) exceeding 2 GPa and excellent ductility, we created a highly accurate UTS prediction machine learning (ML) model using a boosted decision tree model and 1520 dataset of tensile prope
Externí odkaz:
https://doaj.org/article/2961ab15f09c4c1fbeb264a12077d5f2
Autor:
Seonghwan Kim, Byung Do Lee, Min Young Cho, Myoungho Pyo, Young-Kook Lee, Woon Bae Park, Kee-Sun Sohn
Publikováno v:
npj Computational Materials, Vol 10, Iss 1, Pp 1-12 (2024)
Abstract We report a novel deep learning (DL) method for classifying inorganic compounds using 3D electron density data. We transform Density Functional Theory (DFT)-derived CHGCAR files from the Materials Project (MP) and experimental data from the
Externí odkaz:
https://doaj.org/article/d32caef28f18416299a4d3945196d576
Publikováno v:
Journal of Materials Research and Technology, Vol 28, Iss , Pp 4694-4702 (2024)
The purpose of this study is to investigate the changes in the morphology, chemical state, defect density, and impedance of oxides formed on SA 106 Gr.B carbon steel by turbulent water flow at the micro and atomic levels. A compact magnetite layer co
Externí odkaz:
https://doaj.org/article/523f9799dd214eaf9e45fbbea3783884
Publikováno v:
Journal of Materials Research and Technology, Vol 27, Iss , Pp 7905-7916 (2023)
We investigated the effect of C content on the superplasticity of medium Mn steel through high-temperature tensile testing of Fe–7Mn-(0–0.35)C (wt%) steels at temperatures ranging from 490 °C to 720 °C with an initial strain rate of 1.0 × 10
Externí odkaz:
https://doaj.org/article/84e4cc164b57487e89437941853b5ada
Publikováno v:
Crystals, Vol 14, Iss 9, p 782 (2024)
We used the chemical vapor deposition process to deposit carbon film at a high temperature (900 °C). The carbon films were deposited on AISI 1006 foils using an acetylene gas. We analyzed the carbon film deposited on the surface using Raman spectros
Externí odkaz:
https://doaj.org/article/0ba3d20b64da4de494822563002c8fc4
Publikováno v:
Journal of Materials Research and Technology, Vol 26, Iss , Pp 2724-2736 (2023)
In this study, we investigated the hydrogen embrittlement (HE) of martensitic medium-Mn steels with varying levels of S and Ti contents using thermal desorption analysis, silver decoration, slow strain rate tensile testing, and fractography. The S or
Externí odkaz:
https://doaj.org/article/fb1c00f7b27b44728622bc1a8cd119f5
Publikováno v:
Journal of Materials Research and Technology, Vol 26, Iss , Pp 984-989 (2023)
In the present study, the behavior of type A serrations according to strain rate was investigated using the room-temperature tensile flow curves of Fe-18Mn-0.55C (wt%) steel specimens. In the strain rate range from 1 × 10−1 /s to 5 × 10−5 /s, a
Externí odkaz:
https://doaj.org/article/f717f011baa14412aa6b5168901ed2f5
Publikováno v:
Journal of Materials Research and Technology, Vol 26, Iss , Pp 1-13 (2023)
In this study, two stainless steel clad plates (STS 316L/A516-70N and STS 304L/A516-70N) were fabricated without Ni interlayers by hot rolling and normalizing under the same conditions, and their microstructures and intergranular corrosion resistance
Externí odkaz:
https://doaj.org/article/0db38a4faeff41059f1858ae8a5a79bc
Publikováno v:
Journal of Materials Research and Technology, Vol 24, Iss , Pp 3826-3838 (2023)
In the present study, the mechanisms of types B and C serrations in the tensile curves of C-bearing high Mn steel were investigated. Many tensile tests were performed at various temperatures (313–573 K) with two different initial strain rates (ε˙
Externí odkaz:
https://doaj.org/article/57a98eece14f44bba0ffb6b6221e0eb9