Bimetallic spring member for radiation environment
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United States of America Patent
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Jun 18, 1991
Grant Date -
N/A
app pub date -
Mar 17, 1989
filing date -
Mar 17, 1989
priority date (Note) -
Expired
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Abstract
A spring member is formed of at least two layers metallurgically bonded together uniformly and having significantly different rates of irradiation growth, so that the differential growth of the layers results in increased stress in a predetermined direction. The layers may be of different metals or of similar metals which have been treated to give them different growth rates, such as zircaloy with different tin and oxygen content. Examples of other properties which may be used to obtain differential growth rates for the two layers when they are of material with substantially the same constituents are alpha-beta phase transformation temperature, the annealing temperature, the work history, partial recrystallization, and precipitation hardening.
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