Unraveling the Age Hardening Response in U-Nb Alloys

R.E. Hackenberg; G.M. Hemphill; R.T. Forsyth; P.A. Papin; A.M. Kelly; T.J. Tucker; R.M. Aikin Jr.; D.J. Alexander; M.F. Lopez; A.J. Clarke

doi:10.4028/www.scientific.net/MSF.879.665

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HomeMaterials Science ForumMaterials Science Forum Vol. 879Unraveling the Age Hardening Response in U-Nb...

Unraveling the Age Hardening Response in U-Nb Alloys

Abstract:

Complicating factors that have stymied understanding of uranium-niobium’s aging response are briefly reviewed, including (1) niobium inhomogeneity, (2) machining damage effects on tensile properties, (3) early-time transients of ductility increase, and (4) the variety of phase transformations. A simple Logistic-Arrhenius model was applied to predict yield and ultimate tensile strengths and tensile elongation of U-4Nb as a function of thermal age. Fits to each model yielded an apparent activation energy that was compared with phase transformation mechanisms.

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Periodical:

Materials Science Forum (Volume 879)

Pages:

665-670

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.879.665

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Online since:

November 2016

Authors:

R.E. Hackenberg*, G.M. Hemphill, R.T. Forsyth, P.A. Papin, A.M. Kelly, T.J. Tucker, R.M. Aikin Jr., D.J. Alexander, M.F. Lopez, A.J. Clarke

Keywords:

Aging, Phase Transformations, Precipitation Hardening, Tensile Testing

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References

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