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Vanadium Alloy Studies.

AD609727

Publication Date	1964
Personal Author	Holtz, F. C.
Page Count	2
Abstract	This program is concerned with the development of vanadium alloys having improved short-time creep properties at temperatures up to 2400F. The alloy V-40Cb-30Ta-1Ti and this base complexed with various combinations of boron, carbon, hafnium, and silicon were readily cold rolled after thermal homogenization of the arc-melted ingots; in some cases a 2400F press forging operation was required for initial ingot breakdown. Most of the compositions exhibited twinning when deformed at room temperature, and unusually high room-temperature strength and ductility were obtained--the alloy containing 0.23 wt% Si and 0.075 wt% C had a density-corrected ultimate strength of 650,000 psi/(lb/in3), with 24% elongation. Addition of 1.5 wt% Hf and 0.075 wt% C produced a substantial increase in the 2200F creep resistance of the V-40Cb-30Ta-1Ti base. (Author)
Keywords	VANADIUM ALLOYS CREEP NIOBIUM ALLOYS TANTALUM ALLOYS TITANIUM ALLOYS BORON ALLOYS CARBON ALLOYS HAFNIUM ALLOYS SILICON ALLOYS ROLLING (METALLURGY) FORGING TENSILE PROPERTIES HARDNESS ELASTICITY DENSITY RUPTURE HEAT TREATMENT HEAT-RESISTANT METALS AND ALLOYS VANADIUM ALLOY 40NB 30TA 1TI
Corporate Authors	Iit Research Inst Chicago Ill
Document Type	Technical Report
Title Note	Bimonthly rept. no. 5, 1 Oct-30 Nov 64.
NTIS Issue Number	196501
Contract Number	NOW64 0239C

Vanadium Alloy Studies.

Vanadium Alloy Studies.
AD609727

Publication Date	1964
Personal Author	Holtz, F. C.
Page Count	2
Abstract	This program is concerned with the development of vanadium alloys having improved short-time creep properties at temperatures up to 2400F. The alloy V-40Cb-30Ta-1Ti and this base complexed with various combinations of boron, carbon, hafnium, and silicon were readily cold rolled after thermal homogenization of the arc-melted ingots; in some cases a 2400F press forging operation was required for initial ingot breakdown. Most of the compositions exhibited twinning when deformed at room temperature, and unusually high room-temperature strength and ductility were obtained--the alloy containing 0.23 wt% Si and 0.075 wt% C had a density-corrected ultimate strength of 650,000 psi/(lb/in3), with 24% elongation. Addition of 1.5 wt% Hf and 0.075 wt% C produced a substantial increase in the 2200F creep resistance of the V-40Cb-30Ta-1Ti base. (Author)
Keywords	VANADIUM ALLOYS CREEP NIOBIUM ALLOYS TANTALUM ALLOYS TITANIUM ALLOYS BORON ALLOYS CARBON ALLOYS HAFNIUM ALLOYS SILICON ALLOYS ROLLING (METALLURGY) FORGING TENSILE PROPERTIES HARDNESS ELASTICITY DENSITY RUPTURE HEAT TREATMENT HEAT-RESISTANT METALS AND ALLOYS VANADIUM ALLOY 40NB 30TA 1TI
Corporate Authors	Iit Research Inst Chicago Ill
Document Type	Technical Report
Title Note	Bimonthly rept. no. 5, 1 Oct-30 Nov 64.
NTIS Issue Number	196501
Contract Number	NOW64 0239C