Subtask 12F1: Effect of neutron irradiation on swelling of vanadium-base alloys

Technical Report · Wed Mar 01 04:00:00 EST 1995

DOI:https://doi.org/10.2172/415185· OSTI ID:415185

Chung, H. M.; Loomis, B. A.; Smith, D. L. ^[1]

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1. Argonne National Lab., IL (United States)

The objective of this work is to determine the effects of neutron irradiation on the density change, void distribution, and microstructural evolution of vanadium-base alloys. Swelling behavior and microstructural evolution of V-Ti, V-Cr-Ti, and V-Ti-Si alloys were investigated after irradiation at 420-600{degrees}C up to 114 dpa. The alloys exhibited swelling maxima between 30 and 80 dpa and swelling decreased on irradiation to higher dpa. This is in contrast to the monotonically increasing swelling of binary alloys that contain Fe, Ni, Cr, Mo, W, and Si. Precipitation of dense Ti{sub 5}Si{sub 3} promotes good resistance to swelling of the Ti-containing alloys, and it was concluded that Ti of >3 wt.% and 400-1000 wppm Si are necessary to effectively suppress swelling. Swelling was minimal in V-4Cr-4Ti, identified as the most promising alloy based on good mechanical properties and superior resistance to irradiation embrittlement. 18 refs., 6 figs., 1 tab.

• Research Organization: Argonne National Lab., IL (United States)
• OSTI ID: 415185
• Report Number(s): ANL/FPP/TM--287; ITER/US--95/IV-MAT-10; ON: DE96000984
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BINARY ALLOY SYSTEMS
CHROMIUM ALLOYS
DENSITY
IRRADIATION
ITER TOKAMAK
MICROSTRUCTURE
PHYSICAL RADIATION EFFECTS
SILICON ALLOYS
SWELLING
TERNARY ALLOY SYSTEMS
TITANIUM ALLOYS
VANADIUM BASE ALLOYS