The postirradiation tensile properties and microstructure of several vanadium alloys

Conference · Fri Jan 01 04:00:00 EST 1988

OSTI ID:5181409

Braski, D N

Tensile specimens of V-15Cr-5Ti, Vanstar-7, V-3Ti-1si, and V-20Ti were irradiated at 420)degrees)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 hardening was the dominant effect influencing the postirradiation tensile properties, and it markedly increased the yield strength and reduced the total elogation. The V-15Cr-5Ti alloy was very sensitive to helium embrittlement, but Vanstar-7 and V-3Ti-1Si were only slightly affected. Without helium, negligible swelling (<1%) were measured in V-3Ti-1Si and V-20Ti. Preimplanted helium increased swelling in V-3Ti-1Si by increasing cavity nucleation. 11 refs., 11 figs., 3 tabs.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 5181409
• Report Number(s): CONF-880613-1; ON: DE88007140
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360106 -- Metals &amp; Alloys-- Radiation Effects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
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ALLOYS
CRYSTAL STRUCTURE
DAMAGING NEUTRON FLUENCE
EMBRITTLEMENT
FRACTOGRAPHY
GRAIN BOUNDARIES
HARDENING
HELIUM EMBRITTLEMENT
MATERIALS
MECHANICAL PROPERTIES
MICROSTRUCTURE
NEUTRON FLUENCE
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
RADIATION HARDENING
SWELLING
TENSILE PROPERTIES
TESTING
THERMONUCLEAR REACTOR MATERIALS
VANADIUM ALLOYS
VOIDS