Effect of irradiation damage and helium on the swelling and structure of vanadium-base alloys

Conference · Wed Dec 01 04:00:00 EST 1993

OSTI ID:10121992

Chung, H M; Loomis, B A; Smith, D L

Swelling behavior and microstructural evolution of V-Ti, V-Cr-Ti, and V-Ti-Si alloys were investigated after irradiation at 420--600C 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. V-20Ti doped with B exhibited somewhat higher swelling because of He generation. Lithium atoms, generated from transmutation of {sup 10}B, formed {gamma}-LiV{sub 2}O{sub 5} precipitates and did not seem to produce undesirable effects on mechanical properties.

• Research Organization: Argonne National Lab., IL (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 10121992
• Report Number(s): ANL/ET/CP--81786; CONF-930928--26; ON: DE94006540
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360106
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700480
CHROMIUM ALLOYS
COMPONENT DEVELOPMENT
HELIUM
MATERIALS STUDIES
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
SILICON ALLOYS
SWELLING
THERMONUCLEAR REACTOR MATERIALS
TITANIUM ALLOYS
TITANIUM SILICIDES
VANADIUM BASE ALLOYS