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Observation of three‐dimensional internal structure of steel materials by means of serial sectioning with ultrasonic elliptical vibration cutting
Author(s) -
FUJISAKI K.,
YOKOTA H.,
NAKATSUCHI H.,
YAMAGATA Y.,
NISHIKAWA T.,
UDAGAWA T.,
MAKINOUCHI A.
Publication year - 2010
Publication title -
journal of microscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.569
H-Index - 111
eISSN - 1365-2818
pISSN - 0022-2720
DOI - 10.1111/j.1365-2818.2009.03306.x
Subject(s) - metallography , materials science , optical sectioning , optical microscope , ultrasonic sensor , optics , vibration , bearing (navigation) , microscope , composite material , microstructure , acoustics , scanning electron microscope , computer science , physics , artificial intelligence
Summary A three‐dimensional (3D) internal structure observation system based on serial sectioning was developed from an ultrasonic elliptical vibration cutting device and an optical microscope combined with a high‐precision positioning device. For bearing steel samples, the cutting device created mirrored surfaces suitable for optical metallography, even for long‐cutting distances during serial sectioning of these ferrous materials. Serial sectioning progressed automatically by means of numerical control. The system was used to observe inclusions in steel materials on a scale of several tens of micrometers. Three specimens containing inclusions were prepared from bearing steels. These inclusions could be detected as two‐dimensional (2D) sectional images with resolution better than 1 μm. A three‐dimensional (3D) model of each inclusion was reconstructed from the 2D serial images. The microscopic 3D models had sharp edges and complicated surfaces.