Determination of elastic properties of polycrystalline U3Si2 using resonant ultrasound spectroscopy

JOURNAL OF NUCLEAR MATERIALS

卷:498

Article

Carvajal-Nunez, U.¹  Saleh, T. A.²  White, J. T.²  Maiorov, B.³  Nelson, A. T.² 

[1] Ctr Integrated Nanotechnol, Los Alamos, NM 87545 USA

[2] Los Alamos Natl Lab, Mat Sci & Technol Div, Los Alamos, NM 87545 USA

[3] Los Alamos Natl Lab, Mat Phys & Applicat Div, Los Alamos, NM 87545 USA

关键词: Nuclear fuels;    Resonant ultrasound spectroscopy;    Mechanical properties;    Uranium-silicides;    Thermal stress;   

DOI  :  10.1016/j.jnucmat.2017.11.008

来源: Elsevier

【 摘 要 】

The elastic properties of U3Si2 at room temperature have been measured via resonant ultrasound spectroscopy. Results show that the average value of Young's and the bulk modulus for U3Si2 are 130.4 +/- 0.5 and 68.3 +/- 0.5 GPa, respectively. Further, a numerical model to assess thermal stress in an operating fuel is evaluated. The thermal stress evolved in U3Si2 is compared to UO2 to facilitate an estimation of the probability of crack formation in U3Si2 under representative light water reactor operating conditions. (C) 2017 Published by Elsevier B.V.

【 授权许可】

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