SURVEY OF THE DEFORMATION CHARACTERISTICS OF TUNGSTEN

Abstract

Results of basic investigations have shown that variable purity, microstructure, surface condition, and deformation rate will significantly affect the mechanical properties of tungsten, particularly near the ductile- brittle transition temperature range. From the standpoint of purity, oxygen and/or carbon appear to be particularly detrimental as interstitial contaminants. The effect of trace metallic impurities is unknown but is suspected to produce a significant effect in property variations. Thus far, the inability to correlate a specific impurity effect with a property variation has been due to the incapabilities of present analytical techniques at low impurity levels. Internal friction techniques are not without promise and they are expected to yield informative data on impurity effects in tungsten. The effect of surface condition on the mechanical properties has been already demonstrated. Both electropolishing and oxidation have a beneficial influence.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1963
Accession Number
AD0610658

Entities

People

  • George E. Gazza

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Crystals
  • Ductile Brittle Transition
  • Ductility
  • Engineers
  • Internal Friction
  • Jet Propulsion
  • Materials
  • Materials Engineering
  • Mechanical Properties
  • Mechanical Working
  • Metallurgy
  • Powder Metallurgy
  • Reduction Of Area
  • Refractory Metals
  • Surface Properties
  • Transition Temperature
  • Yield Strength

Fields of Study

  • Materials science

Readers

  • Materials Science (Mechanical Engineering).
  • Surface Engineering/Surface Coating Technology.
  • Systems Analysis and Design