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Deep geologic repository progress—2025 Update
Editor's note: This article has was originally published in November 2023. It has been updated with new information as of June 2025.
Outside my office, there is a display case filled with rock samples from all over the world. It contains a disk of translucent, orange salt from the Waste Isolation Pilot Plant near Carlsbad, N.M.; a core of white-and-bronze gneiss from the site of the future deep geologic repository in Eurajoki, Finland; several angular chunks of fine-grained, gray claystone from the underground research laboratory at Bure, France; and a piece of coarse-grained granite from the underground research tunnel in Daejeon, South Korea.
B. A. Loomis, D. L. Smith
Fusion Science and Technology | Volume 19 | Number 3 | May 1991 | Pages 1580-1584
Material and Tritium | Proceedings of the Ninth Topical Meeting on the Technology of Fusion Energy (Oak Brook, Illinois, October 7-11, 1990) | doi.org/10.13182/FST91-A29566
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Swelling of vanadium alloys was determined after irradiation at 420 and 600°C to neutron fluences ranging from 0.3 × 1027 neutrons/m2 (17 dpa) to 1.9 × 1027 neutrons/m2 (114 dpa). Binary and ternary vanadium alloys with Cr, Ti, Mo, W, Ni, Fe, Zr, and Si additions were irradiated in either the fully annealed, partially annealed, or 10% cold-worked condition. Upon irradiation at 600°C, the swelling of vanadium to which Cr had been added was greatly exacerbated, whereas the swelling of vanadium to which Ti, Mo, W, and Ni (3–20%) had been added was not significantly affected. The swelling of V-Cr alloys upon irradiation at 600°C was substantially reduced (<0.1%/dpa) by the addition of Ti (1–15%). Upon irradiation at 420°C the swelling of the vanadium alloys was <0.2%/dpa. Partial annealing or 10% cold-working had an insignificant effect on swelling of the alloys.