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Anomalous Small-Angle X-Ray Scattering Characterization of Model Pressure Vessel Alloy Microstructures

Published online by Cambridge University Press:  15 February 2011

Dale E. Alexander ,
B. J. Kestel ,
P. R. Jemian ,
G. R. Odette ,
D. Klingensmith  and
D. GRAGG
Dale E. Alexander
Affiliation:
Materials Science Division, Argonne National Laboratory, Argonne, IL, 60439
B. J. Kestel
Affiliation:
Materials Science Division, Argonne National Laboratory, Argonne, IL, 60439
P. R. Jemian
Affiliation:
Materials Research Laboratory, University of Illinoisat Urbana-Champaign, UNICAT, Argonne, IL 60439
G. R. Odette
Affiliation:
Department of Mechanical and Environmental Engineering, University of California-Santa Barbara, Santa Barbara, CA, 93106
D. Klingensmith
Affiliation:
Department of Mechanical and Environmental Engineering, University of California-Santa Barbara, Santa Barbara, CA, 93106
D. GRAGG
Affiliation:
Department of Mechanical and Environmental Engineering, University of California-Santa Barbara, Santa Barbara, CA, 93106
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Abstract

Anomalous small-angle x-ray scattering (ASAXS) experiments were performed at energies near the Mn-K and Fe-K absorption edges on an Fe-0.9 Cu wt.%-1.0 Mn wt.% alloy subjected to either annealing at 450°C, 24 hrs or irradiation with 10 MeV electrons to 0.5 mdpa at 300°C. A Guinier analysis of the net scattered intensity revealed scatterers with radii of 16.5.16.8 Å and 16.4.17.3 Å for the irradiated and annealed foils, respectively. The variation in net scattered intensity with photon energy in the annealed sample was consistent with scattering contrast variations expected for Cu-rich, Cu-Mn precipitates. Minimal variation in net intensity (scattering contrast) with energy determined that Cu-Mn precipitates were not detected in the irradiated sample.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 540: Symposium N / Microstructural Processes in Irradiated Materials , 1998 , 415
Copyright
Copyright © Materials Research Society 1999

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