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Phase identification in a U–Zr/Ni–Cr diffusion couple using synchrotron radiation

Published online by Cambridge University Press:  31 January 2011

M. C. Petri
Affiliation:
Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439
L. Leibowitz
Affiliation:
Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439
M. H. Mueller
Affiliation:
Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439
J. W. Richardson Jr.
Affiliation:
Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439
D. D. Keiser Jr.
Affiliation:
Argonne National Laboratory, P.O. Box 2528, Idaho Falls, Idaho 83403
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Abstract

The diffusion zone between a U–23 at. % Zr alloy and a Ni–16.4 at. % Cr alloy exhibited nine distinct phase layers, many of which were mixtures of two phases. Four single-phase regions were less than 10 μm wide. To identify these phases by diffractometry, a synchrotron x-ray beam was collimated by a 50 μm by 1 mm slit. This beam was translated across the sample to obtain diffraction patterns throughout the diffusion zone. In this way, only a few phases were simultaneously within the beam, easing identification of the phases. Strains in the lattice due to solid solution were also observed. These microdiffraction techniques are applicable to a wide range of material systems.

Type
Articles
Copyright
Copyright © Materials Research Society 1996

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