Accession Number : AD0717969

Title :   Tungsten Reinforced Oxidation Resistant Columbium Alloys.

Descriptive Note : Final rept., 1 Nov 69-1 Nov 70,

Corporate Author : SOLAR SAN DIEGO CALIF

Personal Author(s) : Klein,M. J. ; Metcalfe,A. G. ; Domes,R. B.

Report Date : NOV 1970

Pagination or Media Count : 81

Abstract : The approach used in this investigation was to combine weak but oxidation resistant matrices with high-strength filaments to produce a composite with oxidation resistance under loads at temperatures above 2000F. These operating temperature and strength goals are needed for gas turbine engines, but are beyond the range of nickel- and cobalt-base superalloys which have maximum temperature capabilities of about 1900F. Ideally, the composite material could be used uncoated but could also serve as a fail-safe material when coated. During the period covered by this report (the second year) characterization of the mechanical properties, oxidation resistance and filament-matrix compatibility of the model system was continued. (Author)

Descriptors :   (*COMPOSITE MATERIALS, *NIOBIUM ALLOYS), (*REINFORCING MATERIALS, TUNGSTEN ALLOYS), (*GAS TURBINES, CORROSION RESISTANT ALLOYS), TENSILE PROPERTIES, HEAT TREATMENT, HARDNESS, CORROSION RESISTANCE, RUPTURE, FILAMENTS

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

Distribution Statement : APPROVED FOR PUBLIC RELEASE