Development of Digital Holographic Microscope for In-Situ Surface Relief Measurement of Low-Carbon Steel

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  • Inoue Junya
    Research Center for Advanced Science and Technology, The University of Tokyo National Institute for Materials Science
  • Komine Shuhei
    Department of Materials Engineering, The University of Tokyo
  • Misaki Ryo
    Department of Materials Engineering, The University of Tokyo
  • Sekido Kenji
    Research Center for Advanced Science and Technology, The University of Tokyo

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  • Development of Digital Holographic Microscope for <i>In-Situ</i> Surface Relief Measurement of Low-Carbon Steel

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<p>Digital holographic microscope (DHM) system was designed to extend an existing reflected light microscope. The developed DHM system was applied for the observations of plastic deformation of an upper bainite and martensitic transformation of a low-carbon steel to clarify its potential for analyzing surface reliefs observed during these processes. It was demonstrated that the height measurement accuracy is almost equivalent to that of AFM. The exceptional temporal and spatial resolutions provided by the developed DHM system was shown to have a potential to clarify the mechanism behind the formation of surface reliefs by plastic deformation and phase transformation.</p>

収録刊行物

  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 61 (1), 42-48, 2020-01-01

    公益社団法人 日本金属学会

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