Elastic properties of gamma-Pu by resonant ultrasound spectroscopy

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

OSTI ID:962355

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. WORXESTER, MA

Despite intense experimental and theoretical work on Pu, there is still little understanding of the strange properties of this metal. We used resonant ultrasound spectroscopy method to investigate the elastic properties of pure polycrystalline Pu at high temperatures. Shear and longitudinal elastic moduli of the {gamma}-phase of Pu were determined simultaneously and the bulk modulus was computed from them. A smooth linear and large decrease of all elastic moduli with increasing temperature was observed. We calculated the Poisson ratio and found that it increases from 0.242 at 519K to 0.252 at 571K.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC52-06NA25396
• OSTI ID: 962355
• Report Number(s): LA-UR-09-01564; LA-UR-09-1564; TRN: US200919%%115
• Journal Information: Journal of Acoustical Society of America, Journal Name: Journal of Acoustical Society of America
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ELASTICITY
POISSON RATIO
SHEAR
SPECTROSCOPY