Irradiation of copper alloys in FFTF [report]

H.R. Brager, F.A. Garner
1984 unpublished
Objective The object of this effort is to provide data on the response of a high-conductivity, high-strength series of copper alloys to high fluence neutron irradiation and thereby predict their behavior in anticipated fusion environments. Summary Nine copper-base alloys in thirteen material conditions have been inserted into the MOTA-13 experiment for irradiation in FFTF at MSO'C. The alloy Ni-1.9Be is also included in this experiment, which includes both TEM disks and miniature tensile
more » ... ns. Program Title: Irradiation Effects Analysis (AKJ) Principal Investigator: 0. G. Ooran Affiliation: Hanford Engineering Development Laboratory 4.0 Relevant DAFS Program Plan Task/Subtask I I.C.I Effect of Material Parameters on Microstructure 5.0 Accomplishments and Status Introduction The use of high-conductivity high-strength copper-base alloys is anticipated for use in operation of fusion devices, particularly in the magnets and high heat-flux components. There is very little data available on the response of such alloys to high levels of neutron exposure, however. The temperature range of anticipated use is ^OO'C, with the major applications below 300*C. An opportunity recently arose to include a series of copper-base alloys in the MOTA-IB experiment currently being irradiated in the Fast Flux Test Facility (FFTF) . The lowest temperature available in this experiment is MSO'C due to the use of helium rather than sodium as a thermal conduction medium.. The experiment is targeted to reach four exposure levels: 15, 45, 105 and 150 dpa. Table 1 there are nine copper alloys, some of which are in more than one starting material condition. Table 1 also shows that a high-conductivity high-strength Ni-1.98e alloy and AISI 316 were included, the latter to provide a reference state for the experiment. There are three sets of specimens presently being irradiated, one targeted for each fluence level and the fourth set to be inserted at a later time. Each set contains 14 miniature tensile specimens whose electrical conductivities were measured before irradiation and 30 TEM disk specimens, the latter to be used for microscopy and material properties testing. As shown in References None 7.0 Future Work Experiments targeted to irradiate copper-base alloys at lower temperatures are also being designed.
doi:10.2172/7026126 fatcat:ylysdw7ieza6thi4zdqjbeidkm