Scanning Anomalous Small-Angle Scattering as a Tool to Examine Welded Bulk Glass

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Small-angle scattering measurements utilizing anomalous dispersion effect just below the Zr and Ni K edge have been made for welded Zr-based amorphous materials. The measurements were carried out at a bending magnet beam-line 40B of SPring8. A small and parallel X-ray beam generated at the third generation synchrotron is suitable for nanostructure mapping of heterogeneous materials, whose structure varies with less than a millimeter scale. The remelted and heat-affected zones were examined for electron-beam welded Zr-Ni-Cu-Al alloys. Merits and the characteristics, as well as its present limitations of scanning small-angle scattering with a use of anomalous dispersion effect is discussed as a tool to examine microstructure in the spatially inhomogeneous materials in macroscopic scale as well as microscopic scale.

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Periodical:

Materials Science Forum (Volumes 475-479)

Main Theme:

Edited by:

Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie

Pages:

3401-3404

Citation:

I. Murase et al., "Scanning Anomalous Small-Angle Scattering as a Tool to Examine Welded Bulk Glass", Materials Science Forum, Vols. 475-479, pp. 3401-3404, 2005

Online since:

January 2005

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$38.00

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[5] P. Schmidt, The Fractal Approach to Heterogeneous Chemistry, ed. D. Avnir ( John Wiley &Sons N.Y. 1989). Fig. 5 SAXS intensities at Zr K edge for far-edge condition. Since the transmission is much better for higher photon energy, the dynamic range of the scattering intensity is much better in this data. The position of the shoulder is the same as that for Ni edge.