GROWTH OF SINGLE CRYSTAL TUNGSTEN TO BE USED FOR ROLLING INTO SINGLE CRYSTAL SHEET

Abstract

Twenty-four tungsten crystals were grown by the ArcVerneuil method from which 7 were selected for machining into rectangular billets on the basis of minimum crystal misorientation and deviation of crystal orientation from cylindrical axis. Chemical analysis of the finished billets for interstitial and metallic impurities showed satisfactory low levels. The slip systems activated during the deformation of tungsten single crystals by rolling at 10% per pass and 1000C were investigated by means of (A) macroscopic dimensional changes of the billets, (B) Laue back-reflection photographs, (C) Vickers hardness measurements, and (D) dislocation etch-pit techniques.

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Document Details

Document Type
Technical Report
Publication Date
Aug 28, 1964
Accession Number
AD0605832

Entities

People

  • F. R. Charvat
  • G. W. Edwards

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircrafts
  • Chemical Analysis
  • Crystals
  • Fabrication
  • Hardness
  • Materials
  • Materials Laboratories
  • Mechanical Properties
  • Mechanical Working
  • Metallurgical Laboratories
  • Orientation (Direction)
  • Shear Stresses
  • Single Crystals
  • Stress Strain Relations
  • Stresses
  • Tensile Properties
  • X Rays

Fields of Study

  • Materials science

Readers

  • Materials Science and Engineering.
  • Metallurgy