Zobrazeno 1 - 10
of 65
pro vyhledávání: '"Seung Chae Yoon"'
Publikováno v:
Materials, Vol 17, Iss 20, p 5031 (2024)
As vehicle body structures become stronger and part designs more complex for lightweight, controlling frictional properties in automotive press forming has gained critical importance. Friction, a key factor in formability, is influenced by variables
Externí odkaz:
https://doaj.org/article/baabdb52d9cb47a19018252e6accffd0
Autor:
Hye-Jin Kim, Myoung-Gyu Lee, Seung-Chae Yoon, Flavien Vucko, Chang-wook Lee, Dominique Theirry, Sung-Ju Kim
Publikováno v:
Journal of Materials Research and Technology, Vol 9, Iss 6, Pp 13483-13501 (2020)
This study aims to elucidate the behavior of diffusible hydrogen and delayed fracture in martensitic steel with 1500 MPa strength during automotive painting process and under vehicle service conditions. A sequential process of automotive pretreatment
Externí odkaz:
https://doaj.org/article/f9ba2b46ef5649429c9dba7c8370c118
Publikováno v:
International Journal of Precision Engineering and Manufacturing. 24:173-186
Autor:
Soo-Hyun Joo1, Seung Chae Yoon2, Chong Soo Lee1, Dong Hoon Nam3, Soon Hyung Hong3, Hyong Seop Kim1 hskim@postech.ac.kr
Publikováno v:
Journal of Materials Science. Sep2010, Vol. 45 Issue 17, p4652-4658. 7p. 2 Color Photographs, 1 Black and White Photograph, 1 Diagram, 4 Graphs.
Publikováno v:
Computational Materials Science. 77:202-207
It is generally known that equal channel angular pressing with back pressure (BP-ECAP) not only applies higher hydrostatic stress and more deformation compared to what a regular ECAP can apply to a workpiece, but also prevents surface defects in the
Publikováno v:
Journal of Materials Engineering and Performance. 22:3222-3227
Equal channel angular pressing (ECAP) is the most promising and interesting process for refining the grain size to an ultrafine grain or nanosize by imposing severe plastic deformation into the workpiece and repeating the process while maintaining th
Publikováno v:
Corrosion Science and Technology. 11:71-76
Computational fluid dynamics (CFD) is nowadays a powerful and reliable tool for simulating different flow processes and temperature. CFD is used to analyze the various pot geometries and operative variables in 55% Al-Zn pot of CGL. In this research,
Publikováno v:
Journal of Materials Science. 47:7877-7882
In this study, consecutive workpiece equal channel angular pressing (ECAP) in solid-dies, where the second workpiece is successively deformed without splitting and reassembling the die after the first workpiece processing, is employed to reduce the p
Publikováno v:
Korean Journal of Metals and Materials. 50:8-12
Publikováno v:
Acta Materialia. 58:4267-4280
A constitutive relation based on the free volume model was developed to describe the strain-rate-dependent deformation behavior of bulk metallic glasses (BMG) at temperatures within the supercooled liquid region (SLR). Validity of the present approac