SYMPOSIA PAPER Published: 01 January 1990

The Post-Irradiation Tensile Properties and Microstructure of Several Vanadium Alloys


Tensile specimens of V-15Cr-5Ti, Vanstar-7, V-3Ti-lSi, and V-20TJ were irradiated at 420°C in FFTF-MOTA to a damage level of 82 dpa. Helium was preimplanted to levels up to 480 appm in selected specimens using a modified tritium trick. Irradiation hardeningwas the dominant effect influencing the post irradiation tensile properties, and it markedly increased the yield strength and reduced the total elongation. The V-15Cr-5Ti alloy was very sensitive to helium embrittlement, but Vanstar-7 and V-3Ti-lSi were only slightly affected. Without helium, negligible swelling was found in V-15Cr-5Ti and Vanstar-7, and only small values of swelling (<1%) were measured in V-3Ti-lSi and V-20Ti. Preimplanted helium increased swelling in V-3Ti-lSi by increasing cavity nucleation.

Author Information

Braski, DN
Oak Ridge National Laboratory, Oak Ridge, TN
Price: $25.00
Contact Sales
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Developed by Committee: E10
Pages: 161–178
DOI: 10.1520/STP24956S
ISBN-EB: 978-0-8031-5113-0
ISBN-13: 978-0-8031-1267-4