RESEARCH AND DEVELOPMENT OF TANTALUM- AND TUNGSTEN-BASE ALLOYS

Abstract

The effects of alloying upon the properties of Ta and W were examined. A 20-g button survey was made of the Ta-W-Hf and Ta-W-Re ternary systems to determine hardness, fabricability, oxidation resistance, and microstructure as a function of composition. The effects of substituting or adding Ti, Zr, V, Cb and Cr into Ta- and W-base alloys were also examined. A satisfactory technique was worked out for melting and fabrication of Ta-base alloys by arc melting from pressed and sintered electrodes and impact extruding at 1700 C with a Dynapak machine. The mechanical properties of the Ta-base alloys were determined from -320 F to 3000 F on 50 mil sheet specimens. The alloys in general possess a remarkable combination of excellent low temperature ductility and substantial high temperature strength.

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Document Details

Document Type
Technical Report
Publication Date
May 26, 1961
Accession Number
AD0259116

Entities

People

  • A. I. Lewis
  • A. L. Feild Jr.
  • L. S. Richardson
  • R. L. Ammon

Organizations

  • Westinghouse Electric Corporation

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Chemical Analysis
  • Chemical Synthesis
  • Chemistry
  • Construction
  • Crystal Structure
  • Fabrication
  • Heat Treatment
  • Manufacturing
  • Materials
  • Materials Engineering
  • Materials Processing
  • Materials Science
  • Materials Testing
  • Mechanical Properties
  • Mechanical Working
  • Solid Solutions
  • Tensile Strength

Fields of Study

  • Materials science

Readers

  • Metallurgy
  • Surface Engineering/Surface Coating Technology.