Observation on creep of tantalum
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Ames National Laboratory is a government-owned, contractor-operated national laboratory of the U.S. Department of Energy (DOE), operated by and located on the campus of Iowa State University in Ames, Iowa.
For more than 70 years, the Ames National Laboratory has successfully partnered with Iowa State University, and is unique among the 17 DOE laboratories in that it is physically located on the campus of a major research university. Many of the scientists and administrators at the Laboratory also hold faculty positions at the University and the Laboratory has access to both undergraduate and graduate student talent.
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Abstract
Because of its high melting point (2976C) tantalum has received consideration as a structural material in nuclear reactors which operate at high temperatures. Corrosion and erosion studies of tantalum in a "hot loop" have been carried out using a bismuth-uranium alloy as the circulating fuel-coolant, but comparatively little information is available on the mechanical properties of tantalum, particularly on the creep resistance at high temperatures. Therefore, a program of determining some of these properties was undertaken by Nuclear Engineering Group I, and preliminary studies of the creep behavior of tantalum are reported herein.