Development and testing ov danadium alloys for fusion applications

Conference · Tue Oct 01 04:00:00 EDT 1996

OSTI ID:434921

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

V base alloys have advantages for fusion reactor first-wall and blanket structure. To screen candidate alloys and optimize a V-base alloy, physical and mechanical properties of V-Ti, V-Cr-Ti, and V-Ti- Si alloys were studied before and after irradiation in Li environment in fast fission reactors. V-4Cr-4Ti containing 500-1000 wppM Si and <1000 wppM O+N+C was investigated as the most promising alloy, and more testing is being done. Major results of the work are presented in this paper. The reference V-4Cr-4Ti had the most attractive combination of the mechanical and physical properties that are prerequisite for first-wall and blanket structures: good thermal creep, good tensile strength/ductility, high impact energy, excellent resistance to swelling, and very low ductile-brittle transition temperature before and after irradiation. The alloy was highly resistant to irradiation-induced embrittlement in Li at 420-600 C, and the effects of dynamically charged He on swelling and mechanical properties were insignificant. However, several important issues remain unresolved: welding, low-temperature irradiation, He effect at high dose and high He concentration, irradiation creep, and irradiation performance in air or He. Initial results of investigation of some of these issues are also given.

• Research Organization: Argonne National Lab., IL (United States)
• Sponsoring Organization: USDOE Office of Energy Research, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 434921
• Report Number(s): ANL/ET/CP--88143; CONF-951202--4; ON: DE97000681
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BREEDING BLANKETS
CARBON ADDITIONS
CHROMIUM ALLOYS
FIRST WALL
MECHANICAL PROPERTIES
NITROGEN ADDITIONS
OXYGEN ADDITIONS
PHYSICAL RADIATION EFFECTS
SILICON ADDITIONS
THERMONUCLEAR REACTOR MATERIALS
THERMONUCLEAR REACTORS
TITANIUM ALLOYS
VANADIUM BASE ALLOYS
WELDING