Accession Number : AD0695239

Title :   STUDY OF THE HEAT RESISTANCE OF BINARY ALLOYS OF NIOBIUM-TUNGSTEN, NIOBIUM-VANADIUM AND NIOBIUM-TITANIUM ALLOYS,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Vasileva,E. V. ; Porokoshkin,D. A. ; Popov,N. N. ; Lazarev,E. M.

Report Date : 18 APR 1969

Pagination or Media Count : 13

Abstract : Niobium-Tungsten (1-15 percent tungsten), niobium-titanium (1-50 percent titanium) and niobium-vanadium (1-15 percent vanadium) alloys, melted in a vacuum arc furnace with a tungsten nonconsumable electrode, were cast into ingots. The ingots were forged and subjected to homogenizing annealing in vacuum at 1250 degrees C for 25 hr. Specimens prepared from the ingots were tested for ultimate strength and creep. It was found that the ultimate strength of niobium-tungsten and niobium-titanium alloys increased with increasing tungsten or titanium content up to 10 percent. Results of creep tests showed that alloying with tungsten increased and alloying with vanadium or titanium decreased the creep strength. The effect of alloying elements on creep strength increased with increasing content.

Descriptors :   (*NIOBIUM ALLOYS, MECHANICAL PROPERTIES), HIGH TEMPERATURE, TUNGSTEN ALLOYS, VANADIUM ALLOYS, TITANIUM ALLOYS, CREEP, TENSILE PROPERTIES, DIFFUSION, HEAT OF ACTIVATION, USSR

Subject Categories : Properties of Metals and Alloys
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE