Accession Number : AD0877904

Title :   Development of Oxidation Resistant, High-Strength, Columbium-Base Alloys.

Descriptive Note : Final technical rept. 1 Jul 66-30 Jun 69,

Corporate Author : UNION CARBIDE CORP KOKOMO IN STELLITE DIV

Personal Author(s) : Roche, T. K. ; Graham, D. L.

Report Date : JAN 1970

Pagination or Media Count : 197

Abstract : The program was carried out for the development of a fabricable columbium-base alloy with improved oxidation resistance and good strength-properties at 2000F and above for use as a blade material in gas turbine engines. Nineteen electron beam melted ternary alloys from the Cb-W-Ta and Cb-W-Hf systems within the composition range 10-25 percent tungsten, 15-30 percent tantalum, 2-35 percent hafnium, were evaluated for fabricability, tensile and creep-rupture strength properties, and oxidation resistance. (Author)

Descriptors :   (*NIOBIUM ALLOYS, MECHANICAL PROPERTIES), (*GAS TURBINE BLADES, NIOBIUM ALLOYS), CREEP STRENGTH, CORROSION RESISTANCE, MANUFACTURING, THERMAL STABILITY, ELECTRON BEAM MELTING, HARDNESS, TUNGSTEN ALLOYS, TANTALUM ALLOYS, HAFNIUM ALLOYS.

Subject Categories : Properties of Metals and Alloys
      Jet and Gas Turbine Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE