Accession Number : AD0427343


Title :   DISPERSION-STRENGTHENED VANADIUM ALLOYS.


Descriptive Note : Final rept., 14 Dec 62-13 Dec 63,


Corporate Author : IIT RESEARCH INST CHICAGO ILL


Personal Author(s) : Holtz,F C ; Richard,L B


Report Date : 10 Jan 1964


Pagination or Media Count : 34


Abstract : Vanadium-niobium base alloys containing additions of titanium, zirconium, or hafnium in combination with up to 0.2wt.-% carbon were prepared by arcmelting and fabricated to sheet for elevated temperature creep tests. Compositions based on V-60Nb and containing titaniun or zirconium with carbon had good fabricability, but V-60Nb1Hf-C and V-40Cb-30Ta-C alloys were difficult to work. Creep tests conducted on siliconized specimens in 2000 F air showed that large carbon additions (0.1 and 0.2wt.-%) produced increased creep rates in V-60Nb base alloys. The most creep resistant composition was V-60Nb-10Ta-1Zr0.075C which exhibited 1.25% creep in 2.5 hours under a stress of 11, 200 psi. (Author)


Descriptors :   *NIOBIUM ALLOYS , *VANADIUM ALLOYS , DISPERSION HARDENING , DISPERSION HARDENING , TITANIUM ALLOYS , ZIRCONIUM ALLOYS , HAFNIUM ALLOYS , CARBON ALLOYS , MATERIAL FORMING , MELTING , ELECTRIC ARCS , TANTALUM ALLOYS , ELECTRON MICROSCOPY , POWDER METALLURGY , CARBIDES , OXIDES , HEAT TREATMENT , HARDNESS , MICROSTRUCTURE , CREEP , HIGH TEMPERATURE , SCIENTIFIC RESEARCH , MECHANICAL PROPERTIES , ROLLING(METALLURGY) , COATINGS , SILICIDES , RECRYSTALLIZATION


Distribution Statement : APPROVED FOR PUBLIC RELEASE