Development of Oxidation Resistant, High-Strength, Columbium-Base Alloys

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.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1970
Accession Number
AD0877904

Entities

People

  • D. L. Graham
  • T. K. Roche

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Chemistry
  • Construction
  • Fabrication
  • Manufacturing
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Measurement
  • Mechanical Properties
  • Mechanical Working
  • Metallurgy
  • Niobium
  • Solid Solutions
  • Tensile Strength
  • Transition Temperature
  • Turbine Blades

Fields of Study

  • Materials science

Readers

  • Metallurgy
  • Surface Engineering/Surface Coating Technology.

Technology Areas

  • Directed Energy
  • Microelectronics