Seven Years of Uranium Alloy Development at Weldon Spring, 1959/1966. Page: 13 of 47
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Uranium metal after beta heat
treatment considered to be
entirely random in crystal
orientation, without influence
from degree of previous cold work.
The beta-to-alpha transformation
cannot be suppressed"in quenching
except in highly alloyed (10 w/o
or greater) uranium.
Fuel core ruptures attributed to
unfavorable orientations of non-
metallic inclusions and/or macro-
structure; the cure is in purer
metal, more uniform alpha working.
:n : : : :.
Beta-treatment after rolling
normally provides a balanced
texture that simulates a random
orientation in behavior but also
contains texture gradients that
are radial, circumferential,
and axial; slight preferred
orientation-will survive beta
treatment in a degree propor-
tional to the amount of previous
Modest alloy levels (< 0.1 w/o)
permit retention of the beta
phase for moderate time periods
if rapidly quenched.
Accelerated growth of fuel
attributed to grain boundary
cavitation at a critical tempera-
ture range presumed to arise from
consolidation of dislocation
motions within the lattice; the
cure is in alloy additions,
conceived as a means of pinning
dislocations in place by fine
Hot-die sizing the new white
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Fellows, J. A. Seven Years of Uranium Alloy Development at Weldon Spring, 1959/1966., report, January 1, 1966; Weldon Spring, Missouri. (https://digital.library.unt.edu/ark:/67531/metadc1033773/m1/13/: accessed March 23, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.