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Ki, Hyungson
Laser Processing & Multiphysics Systems Laboratory
Research Interests
  • Laser materials processing

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Surface modification of the patterned Al6061/SUS304 metal plates using the large electron beam

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Title
Surface modification of the patterned Al6061/SUS304 metal plates using the large electron beam
Author
Kim, Dong MinKim, JisuPark, Sung SooPark, Hyung WookKi, Hyungson
Keywords
Al6061; Electron beam irradiation; Finishing process; Geometric patterns; Machining Process; Metal plates; Metal surfaces; Microstructure variations; Surface hardness; Surface integrity; SUS304
Issue Date
201211
Publisher
ELSEVIER SCIENCE BV
Citation
APPLIED SURFACE SCIENCE, v.261, no., pp.458 - 463
Abstract
Polishing is a finishing process used to improve surface integrity by reducing surface roughness and residual stress caused by other machining processes. The recently developed electron beam polishing method was used in this study to improve surface quality. In this process, an electron beam with a maximum diameter of 60 mm was applied for a few microseconds to melt and evaporate a metal surface. Al6061 and SUS304 metal plates were prepared with different geometric patterns and subjected to electron beam polishing. The surface roughness of the patterned SUS304 metal plate was significantly improved. However, the surface roughness of the patterned Al6061 metal plate became worse. Although the surface hardness decreased by approximately 10% on the re-solidified layers on both types of plates, the contact angle increased due to changes in surface morphology. The microstructure variation after the electron beam irradiation was also examined and compared with the thickness prediction of the re-solidified layer for Al6061 and SUS304 metal plates.
URI
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DOI
http://dx.doi.org/10.1016/j.apsusc.2012.08.032
ISSN
0169-4332
Appears in Collections:
MNE_Journal Papers
MSE_Journal Papers

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