DISPERSION-STRENGTHENED VANADIUM ALLOYS. Bimonthly Report No. 5, August 14, 1963-October 13, 1963

Technical Report · Fri Nov 01 04:00:00 EST 1963

OSTI ID:4129004

Holtz, F C

Vanadium-- niobium alloys, dispersion-strengthened by additions of titanium, zirconium, or hafnium in combination with carbon, were prepared by arc- melting. Compositions containing 1 wt% hafnium with small carbon additions were more difficult to fabricate and have higher recrystallization temperatures than similar alloys containing zirconium and carbon. Short-time creep tests were conducted in 2000 deg F air on siliconized V--60 wt% Nb base specimens. At stress levels of 8500 to 8850 psi, creep values of 0.5 to 1.2% were measured in 2 1/2 hours. Some of the specimens retained their room-temperature tensile strength and ductility after stressing at 2000 deg F. These initial data indicate that V-60 wt% Nb alloys containing 1 wt% titanium with residual melting stock impurities are more creep resistant at 2000 deg F than the alloys containing 1 wt% zirconium with 0.1 or 0.2 wt% carbon. (auth)

• Research Organization: Illinois inst. of Tech., Chicago. IIT Research Inst.
• NSA Number: NSA-18-005732
• OSTI ID: 4129004
• Report Number(s): IITRI-B6007-5; AD-423428
• Country of Publication: United States
• Language: English

Related Subjects

AIR
CARBIDES
CREEP
DUCTILITY
ELECTRIC ARCS
FABRICATION
HAFNIUM ALLOYS
HIGH TEMPERATURE
IMPURITIES
MELTING
METALS, CERAMICS, AND OTHER MATERIALS
NIOBIUM ALLOYS
PREPARATION
RECRYSTALLIZATION
SILICONES
TENSILE PROPERTIES
TITANIUM ALLOYS
VANADIUM ALLOYS
ZIRCONIUM ALLOYS