ORNL-1816 - the Molten Salt Energy Technologies Web Site

ANP QUARTERLY PROGRESS REPORT
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UNCLASSIFIED
ORNL-LR-DWG 4426
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ELAPSED TIME (hr)
Fig. 7.1. Oxidation of Plated Hastelloy B in Air at 1500OF.
backing up of the tube-to-header joints with Coast
Welding
Metals No. 52 brazing alloy.
The fabrication of the three test assemblies
P. Patriarca
R. E. Clausing
K. W. Reber
G. M. Slaughter
made to date has been routine, and no unusual Metallurgy Division
behavior or difficulties have been encountered.
Although it is expected that the characteristic
aging of Hastelloy B and the subsequent loss in
room-temperature ductility will affect the longevity
of these test specimens, the first assembly has
J. M. Cisar
Aircraft R eactor Engineering Division
R. L. Heestand
Pratt & Whitney Aircraft
withstood, without failure, as determined by a Preparations are under way for experiments to
helium leak test, 100 accrued hours of life with evaluate the properties of Hastelloy B weld metal
one air quench and one water quench directed at as affected by thermal history. A comparative
the fin surfaces. Other test assemblies are being basis for the tests has been prepared through
fabricated with type 310 stainless-steel-clad experiments in which the effect of aging time at
copper in order to determine, in conjunction with 15OOOF on the room-temperature ductility of wrought
the evaluation of Hastelloy B, the dimensional
stability and oxidation resistance of this material
Hastelloy- B was determined. For these tests,
guided bend specimens, x y2 x 1% in., were
under thermal shock. cut from 3/,6-in.-thick wrought Hastelloy B plate
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