Effect of neutron irradiation on the tensile properties and microstructure of several vanadium alloys
Specimens of V-15Cr-5Ti, VANSTAR-7, and V-3Ti-1Si were encapsulated in TZM tubes containing /sup 7/Li to prevent interstitial pickup and irradiated in FFTF (MOTA experiment) to a damage level of 40 dpa. The irradiation temperatures were 420, 520, and 600/sup 0/C. For a better simulation of fusion reactor conditions, helium was preimplanted in some specimens using a modified version of the ''tritium trick.'' The V-15Cr-5Ti alloy was most susceptible to irradiation hardening and helium embrittlement, followed by VANSTAR-7 and V-3Ti-1Si. VANSTAR-7 exhibited a relatively high maximum void swelling of approx.6% at 520/sup 0/C while V-15Cr-5Ti and V-3Ti-1Si had values of less than 0.3% at all three temperatures. The V-3Ti-1Si clearly outperformed the other two vanadium alloys in resisting the effects of neutron irradiation.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 6041980
- Report Number(s):
- CONF-860605-9; ON: DE86008234
- Country of Publication:
- United States
- Language:
- English
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ALKALI METAL ISOTOPES
ALLOYS
BARYON REACTIONS
CHROMIUM ALLOYS
ELEMENTS
EMBRITTLEMENT
FLUIDS
GASES
HADRON REACTIONS
HARDENING
HELIUM
HIGH TEMPERATURE
IRON ALLOYS
IRRADIATION
ISOTOPES
LIGHT NUCLEI
LITHIUM 7
LITHIUM ISOTOPES
NEUTRON REACTIONS
NONMETALS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
ODD-EVEN NUCLEI
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
RARE GASES
SILICON ADDITIONS
SILICON ALLOYS
STABLE ISOTOPES
SWELLING
TITANIUM ALLOYS
VANADIUM ALLOYS
VANADIUM BASE ALLOYS
VANSTAR 7
ZIRCONIUM ALLOYS