DISPERSION-STRENGTHENED VANADIUM ALLOYS. Bimonthly Report No. 2, February 14, 1963-April 13, 1963

Technical Report · Wed May 01 04:00:00 EDT 1963

DOI:https://doi.org/10.2172/4721250· OSTI ID:4721250

Holtz, F C

Arc-melting and powder metallurgy techniques are being used to incorporate fine, refractory dispersants in V-- Nb base alloys in order to improve their long-time elevatedtemperature strength properties. Solution annealing and aging studies of arc-melted alloys containing Hf or Zr in combination with C indicate that the Hf carbide phase is the more stable. The hydride process was used to obtain powders of V-60 wt% Nb-1 wt% Ti, to which fine oxide or carbide powders were added. After blending, coldcompacting, sintering at 2800 l F, and annealing at 2000 and 2400 l F, specimens containing alumina and thoria exhibited a high degree of reactivity with the alloy base. Improved stability was noted in the alloys containing ceria, lanthana, yttria, Hf carbide, and Zr carbide. (auth)

• Research Organization: Illinois Inst. of Tech., Chicago. Armour Research Foundation
• NSA Number: NSA-17-023943
• OSTI ID: 4721250
• Report Number(s): ARF-B6007-2; AD-404100
• Country of Publication: United States
• Language: English

Related Subjects

ALUMINUM OXIDES
ANNEALING
CERIUM OXIDES
DISPERSIONS
ELECTRIC ARCS
HAFNIUM CARBIDES
HIGH TEMPERATURE
LANTHANUM OXIDES
MELTING
METALS, CERAMICS, AND OTHER MATERIALS
NIOBIUM ALLOYS
POWDER METALLURGY
REPORT
SINTERING
STABILITY
TENSILE PROPERTIES
THORIUM OXIDES
TITANIUM ALLOYS
VANADIUM ALLOYS
YTTRIUM OXIDES
ZIRCONIUM CARBIDES