High energy X-ray diffraction measurement of residual stresses in a monolithic aluminum clad uranium-10 wt% molybdenum fuel plate assembly

D. W. Brown, M. A. Okuniewski, J. D. Almer, L. Balogh, B. Clausen, J. S. Okasinski, B. H. Rabin

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Residual stresses are expected in monolithic, aluminum clad uranium 10 wt% molybdenum (U-10Mo) nuclear fuel plates because of the large mismatch in thermal expansion between the two bonded materials. The full residual stress tensor of the U-10Mo foil in a fuel plate assembly was mapped with 0.1 mm resolution using high-energy (86 keV) X-ray diffraction. The in-plane stresses in the U-10Mo foil are strongly compressive, roughly -250 MPa in the longitudinal direction and -140 MPa in the transverse direction near the center of the fuel foil. The normal component of the stress is weakly compressive near the center of the foil and tensile near the corner. The disparity in the residual stress between the two in-plane directions far from the edges and the tensile normal stress suggest that plastic deformation in the aluminum cladding during fabrication by hot isostatic pressing also contributes to the residual stress field. A tensile in-plane residual stress is presumed to be present in the aluminum cladding to balance the large in-plane compressive stresses in the U-10Mo fuel foil, but cannot be directly measured with the current technique due to large grain size.

Original languageEnglish
Pages (from-to)252-261
Number of pages10
JournalJournal of Nuclear Materials
Volume441
Issue number1-3
DOIs
Publication statusPublished - 2013

Fingerprint

Uranium
Molybdenum
Aluminum
Metal foil
uranium
residual stress
molybdenum
foils
Residual stresses
assembly
Aluminum cladding
aluminum
X ray diffraction
plane stress
diffraction
x rays
energy
hot isostatic pressing
Hot isostatic pressing
nuclear fuels

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Nuclear Energy and Engineering

Cite this

High energy X-ray diffraction measurement of residual stresses in a monolithic aluminum clad uranium-10 wt% molybdenum fuel plate assembly. / Brown, D. W.; Okuniewski, M. A.; Almer, J. D.; Balogh, L.; Clausen, B.; Okasinski, J. S.; Rabin, B. H.

In: Journal of Nuclear Materials, Vol. 441, No. 1-3, 2013, p. 252-261.

Research output: Contribution to journalArticle

Brown, D. W. ; Okuniewski, M. A. ; Almer, J. D. ; Balogh, L. ; Clausen, B. ; Okasinski, J. S. ; Rabin, B. H. / High energy X-ray diffraction measurement of residual stresses in a monolithic aluminum clad uranium-10 wt% molybdenum fuel plate assembly. In: Journal of Nuclear Materials. 2013 ; Vol. 441, No. 1-3. pp. 252-261.
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