Polycrystalline gamma plutonium's elastic moduli versus temperature

Journal Article · Thu Jan 01 00:00:00 EST 2009 · Journal of the Acoustical Society of America

OSTI ID:962371

Migliori, Albert ^[1]; Betts, J ^[1]; Trugman, A ^[1]; Mielke, C H ^[1]; Mitchell, J N ^[1]; Ramos, M ^[1]; Stroe, I ^[2]

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1. Los Alamos National Laboratory
2. WORCESTER POLYTECHNIC INSTITUTE

Resonant ultrasound spectroscopy was used to measure the elastic properties of pure polycrystalline {sup 239}Pu in the {gamma} phase. Shear and longitudinal elastic moduli were measured simultaneously and the bulk modulus was computed from them. A smooth, linear, and large decrease of all elastic moduli with increasing temperature was observed. They calculated the Poisson ratio and found that it increases from 0.242 at 519 K to 0.252 at 571 K. These measurements on extremely well characterized pure Pu are in agreement with other reported results where overlap occurs.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC52-06NA25396
• OSTI ID: 962371
• Report Number(s): LA-UR-09-01644; LA-UR-09-1644; JASMAN; TRN: US200919%%131
• Journal Information: Journal of the Acoustical Society of America, Journal Name: Journal of the Acoustical Society of America; ISSN 0001-4966
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ELASTICITY
POISSON RATIO
SHEAR
SPECTROSCOPY