Effect of neutron irradiation on vanadium alloys
Neutron-irradiated vanadium alloys were evaluated for their susceptibility to irradiation hardening, helium embrittlement, swelling, and residual radioactivity, and the results were compared with those for the austenitic and ferritic stainless steels. The VANSTAR-7 and V-15Cr-5Ti alloys showed the greatest hardening between 400 and 600/sup 0/C while V-3Ti-1Si and V-20Ti had lower values that were comparable to those of ferritic steels. The V-15Cr-5Ti and VANSTAR-7 alloys were susceptible to helium embrittlement caused by the combination of weakened grain boundaries and irradiation-hardened grain matrices. Specimen fractures were entirely intergranular in the most severe instances of embrittlement. The V-3Ti-1Si and V-20Ti alloys were more resistant to helium embrittlement. Except for VANSTAR-7 irradiated to 40 dpa at 520/sup 0/C, all of the vanadium alloys exhibited low swelling that was similar to the ferritic steels. Swelling was greater in specimens that were preimplanted with helium using the tritium trick. The vanadium alloys clearly exhibit lower residual radioactivity after irradiation than the ferrous alloys.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 6073097
- Report Number(s):
- CONF-860421-18; ON: DE86009156
- Resource Relation:
- Conference: 2. international conference on fusion reactor materials (ICFRM-2), Chicago, IL, USA, 13 Apr 1986; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CHROMIUM ALLOYS
EMBRITTLEMENT
HARDENING
SWELLING
TITANIUM ALLOYS
VANADIUM BASE ALLOYS
HELIUM
HIGH TEMPERATURE
NEUTRON REACTIONS
SILICON ADDITIONS
ALLOYS
BARYON REACTIONS
ELEMENTS
FLUIDS
GASES
HADRON REACTIONS
NONMETALS
NUCLEAR REACTIONS
NUCLEON REACTIONS
RARE GASES
SILICON ALLOYS
VANADIUM ALLOYS
360103* - Metals & Alloys- Mechanical Properties
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