Seven Years of Uranium Alloy Development at Weldon Spring, 1959/1966. Page: 12 of 47
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SEVEN YEARS OF URANIUM ALLOY DEVELOPMENT
AT WELDON SPRING - 1959/1966
MILESTONES IN FUEL TECHNOLOGY
Maximum purity of uranium metal
Stringers and striations of
oxides, nitrides, slag, etc.
constitute a matter of major
concern in appraising metal
Rolling pass-schedule regarded as
source of possible weakness.
(cruciform pattern of cross
Recrystallization during cooling
of alpha-rolled metal regarded as
necessary and important.
Inadvertent heating to, the gamma
phase after alpha rolling viewed
as irreparable damage to the
structure with remelting as the
only possible means of reprocess-
Grain size controllable by carbon
content and proper air-delay in
transferring from beta salt bath
to water quench.
Hydrogen level in uranium metal a
matter of critical concern for
Alloy additions of "impurity"
levels highly important.
Non-metallic inclusions rated as
undesirable but not as critical
factor influencing serviceability.
Exact nature of alpha-phase
rolling no longer a matter of
Degree of recrystallization rated
as having little or no influence
on final structure.
Gamma-phase structures can be
refined with use of suitable alloy
levels and an optimum combination
of alpha annealing and beta
Grain size controllable by alloy
additions to provide a system of
fine precipitates; carbon only
mildly effecti-e; air-delay should
be minimized rather than
Low hydrogen still desirable but
newer methods of canning and
better understanding of the
earlier techniques make it a less
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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/m1/12/: accessed March 26, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.