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Time-dependent Local and Average Structural Evolution of δ-phase 239Pu-Ga Alloys

Published online by Cambridge University Press:  05 August 2016

Alice I. Smith
Affiliation:
Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, NM 87525, U.S.A.
Katharine L. Page
Affiliation:
Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, NM 87525, U.S.A. Materials Physics and Applications, Los Alamos National Laboratory, Los Alamos, NM 87545, U.S.A. Chemical and Engineering Materials Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831 U.S.A.
Joan E. Siewenie
Affiliation:
Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, NM 87525, U.S.A. Materials Physics and Applications, Los Alamos National Laboratory, Los Alamos, NM 87545, U.S.A. Chemical and Engineering Materials Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831 U.S.A.
Adrian S. Losko
Affiliation:
Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, NM 87525, U.S.A. Materials Physics and Applications, Los Alamos National Laboratory, Los Alamos, NM 87545, U.S.A. Chemical and Engineering Materials Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831 U.S.A. Department of Nuclear Engineering, University of California Berkeley, Berkeley, CA 94720, U.S.A.
Sven C. Vogel
Affiliation:
Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, NM 87525, U.S.A.
Olivier A. Gourdon
Affiliation:
Materials Physics and Applications, Los Alamos National Laboratory, Los Alamos, NM 87545, U.S.A.
Scott Richmond
Affiliation:
Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, NM 87525, U.S.A.
Tarik A. Saleh
Affiliation:
Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, NM 87525, U.S.A.
Michael Ramos
Affiliation:
Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, NM 87525, U.S.A.
Daniel S. Schwartz
Affiliation:
Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, NM 87525, U.S.A.
Corresponding
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Abstract

Plutonium metal is a very unusual element, exhibiting six allotropes at ambient pressure, between room temperature and its melting point, a complicated phase diagram, and a complex electronic structure. Many phases of plutonium metal are unstable with changes in temperature, pressure, chemical additions, or time. This strongly affects structure and properties, and becomes of high importance, particularly when considering effects on structural integrity over long periods of time [1]. This paper presents a time-dependent neutron total scattering study of the local and average structure of naturally aging δ-phase 239Pu-Ga alloys, together with preliminary results on neutron tomography characterization.

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Copyright
Copyright © Materials Research Society 2016 

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References

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