TANTALUM EXTRUSION PROGRAM

Abstract

Five different starting materials were used to evaluate the vacuum arc melting and electron beam melting parameters to determine optimum consolidation procedures. The most promising method for the production of sound extrusion billets was a 3 step melting process. This consisted of vacuum arc melting 2.5-inch diameter presintered Na reduced Ta-10W electrodes into a 5-in.-diam crucible. This material was then electron-beam melted to insure maximum purity in the ingot. The electrode for the third melt consisted of 2 welded 5-in.-diam electron beam melted ingots. This electrode was vacuum arc melted into an 8-in.-diam ingot. (Author)

Document Details

Document Type
Technical Report
Publication Date
Aug 21, 1961
Accession Number
AD0270012

Tags

DTIC Thesaurus Topics

  • Arc Melting
  • Crucibles
  • Diameters
  • Electrodes
  • Electron Beam Melting
  • Electron Beams
  • Electrons
  • Extrusion
  • Fabrication
  • Manufacturing
  • Materials
  • Melting
  • Melts
  • Production
  • Tantalum

Fields of Study

  • Materials science

Readers

  • Metallurgy

Technology Areas

  • Directed Energy
  • Microelectronics