Weldability study of Ti-Ta-Nb alloy and pure titanium

H. C. Dey, V. Shankar, C. R. Das, A. K. Bhaduri

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Weldability of Ti-4.8%Ta-1.8%Nb alloy, for use in electrolytic dissolver of nuclear fuel reprocessing plant, was evaluated in autogenous bead-on-plate gas tungsten arc welds made at two different heat inputs. Pure titanium was also welded for comparison. A secondary shielding setup was employed for protection of the weldment from gaseous contamination during and after welding. In the weld and heat-affected zone (HAZ) of Ti-Ta-Nb weldments, plate-like martensite, characteristic of cooling rates during welding, was observed. Low heat input and slower welding speed resulted in greater proportion of the desirable fine equiaxed prior-β grains. Lower heat input also reduced HAZ width.
Original languageEnglish
JournalInternational Journal of Nuclear Energy Science and Technology
Volume1
Issue number2-3
Pages (from-to)246-253
ISSN1741-6361
Publication statusPublished - 2005
Externally publishedYes

Keywords

  • Gas tungsten arc welding
  • Heat-affected zone
  • Microstructure
  • Ti-Ta-Nb alloy
  • Titanium
  • Weldability

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