CRACK PROPAGATION STUDIES OF WELDS IN TANTALUM AND COLUMBIUM SHEET

Abstract

Single pass welds were prepared in 0.015-in.-thick tantalum (Ta) and columbium (Cb) sheet material by the automatic-inert-gas, nonconsummable electrode (TIG) process, representing 'best practice.' Edges of the material were formed to provide filler material. Tensile and precracked sheet Charpy tests were performed. Crack propagation resistance measurements were obtained for weld centerline, heat affected zone and base metal locations. Modes of failure were obtained and categorized. Both macroscopic and microscopic examinations were made of the weld zone, heat affected zone, and base metal.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1967
Accession Number
AD0654150

Entities

People

  • K. E. Hays

Organizations

  • Lockheed Martin Missiles and Space

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aircrafts
  • Base Metal
  • Buckling
  • Charpy Impact Tests
  • Classification
  • Corporations
  • Crack Propagation
  • Cracks
  • Engineered Materials
  • Impact Tests
  • Materials
  • Materials Science
  • Metals
  • Orientation (Direction)
  • Stresses
  • Thickness
  • Transverse

Readers

  • Materials Science (Mechanical Engineering).
  • Metallurgy