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Influence of transmutation and high neutron exposure on materials used in fission-fusion correlation experiments [electronic resource].

Published
Washington, D.C. : United States. Office of the Assistant Secretary for Nuclear Energy, 1990.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
Pages: (29 pages) : digital, PDF file
Additional Creators
Pacific Northwest Laboratory, United States. Office of the Assistant Secretary for Nuclear Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
This paper explores the response of three different materials to high fluence irradiation as observed in recent fusion-related experiments. While helium at fusion-relevant levels influences the details of the microstructure of Fe--Cr--Ni alloys somewhat, the resultant changes in swelling and tensile behavior are relatively small. Under conditions where substantially greater-than-fusion levels of helium are generated, however, an extensive refinement of microstructure can occur, leading to depression of swelling at lower temperatures and increased strengthening at all temperatures studied. The behavior of these alloys is dominated by their tendency to converge to saturation microstructures which encourage swelling. Irradiations of nickel are dominated by its tendency to develop a different type of saturation microstructure that discourages further void growth. Swelling approaches saturation levels that are remarkably insensitive to starting microstructure and irradiation temperature. The rate of approach to saturation is very sensitive to variables such as helium, impurities, dislocation density and displacement rate, however. Copper exhibits a rather divergent response depending on the property measured. Transmutation of copper to nickel and zinc plays a large role in determining electrical conductivity but almost no role in void swelling. Each of these three materials offers different challenges in the interpretation of fission-fusion correlation experiments.
Report Numbers
E 1.99:pnl-sa-17366
E 1.99: conf-8909116--1
conf-8909116--1
pnl-sa-17366
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
07/01/1990.
"pnl-sa-17366"
" conf-8909116--1"
"DE91004073"
Workshop on radiation damage correlation for fusion conditions, Silkeborg (Denmark), 28 Sep - 3 Oct 1989.
Garner, F.A.
Funding Information
AC06-76RL01830
View MARC record | catkey: 14751515