Average Structure Evolution of δ-phase Pu-Ga Alloys

Conference · Mon Mar 30 00:00:00 EDT 2015

OSTI ID:1177168

Smith, Alice Iulia ^[1]; Page, Katharine L. ^[2]; Gourdon, Olivier ^[1]; Siewenie, Joan E. ^[2]; Richmond, Scott ^[1]; Saleh, Tarik A. ^[1]; Ramos, Michael ^[1]; Schwartz, Daniel S. ^[1]

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1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)

[Full Text] Plutonium metal is a highly unusual element, exhibiting six allotropes at ambient pressure, from room temperature to its melting point. Many phases of plutonium metal are unstable with temperature, pressure, chemical additions, and time. This strongly affects structure and properties, and becomes of high importance, particularly when considering effects on structural integrity over long time periods. The fcc δ-phase deserves additional attention, not only in the context of understanding the electronic structure of Pu, but also as one of the few high-symmetry actinide phases that can be stabilized down to ambient pressure and room temperature by alloying it with trivalent elements. We will present results on recent work on aging of Pu-2at.%Ga and Pu-7at.%Ga alloys

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE/LANL
• DOE Contract Number: AC52-06NA25396
• OSTI ID: 1177168
• Report Number(s): LA-UR-15-22268; TRN: US1600120
• Resource Relation: Conference: Materials Science & Technology 2015, Columbus, OH (United States), 4-8 Oct 2015
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
PLUTONIUM-DELTA
FCC LATTICES
TEMPERATURE RANGE 0273-0400 K
TEMPERATURE RANGE 0400-1000 K
GALLIUM ALLOYS
PLUTONIUM BASE ALLOYS
ELECTRONIC STRUCTURE
AGING