| Autor: |
HIRAYAMA, Kyosuke, TODA, Hiroyuki, SU, Han, OKAMURA, Kai, SUZUKI, Yoshio, TAKEUCHI, Akihisa, UESUGI, Masayuki, SHIMIZU, Kazuyuki |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
SPring-8/SACLA利用研究成果集. 10(1):51-59 |
| ISSN: |
2187-6886 |
| Popis: |
Three high-resolution / high-energy phase-contrast X-ray nano-tomography (XNT) techniques were tested, with the spatial resolution, contrast, and artefacts being evaluated. All the experiments utilized apodization Fresnel zone plates (A-FZP), which have been recently developed for the purpose of imaging characteristics improvement, taking advantage of the A-FZP’s secondary benefit that its thicker inner zone makes it readily applicable for use with high X-ray energies. The techniques employed in the present study were the imaging-type XNT combined with Zernike phase-contrast optics, the X-ray schlieren phase-contrast method, and the defocusing phase-contrast method. All the methods successfully recognized a density difference of 3.7 % between α and β grains in a Ti-6Al-4V alloy at an X-ray energy of 20 keV, together with an excellent spatial resolution within a scanning time of 1h. The Zernike phase-contrast method was then successfully applied to in-situ XNT observation of the transformation behavior of retained austenite in a duplex carbon steel at an X-ray energy of 20 ~ 37.7 keV. The characteristic local transformation behavior of the retained austenite was revealed through a series of 3D images and quantitative data obtained from the 3D images. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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