Characterisation of nickel based hardfacing deposits on austenitic stainless steel

C. R. Das, S. K. Albert, A. K. Bhaduri, C. Sudha, A. L. E. Terrance

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Nickel based hardfacing alloys Colmonoy-5 and Colmonoy-6 deposited on type 316L austenitic stainless steel substrate using the gas tungsten arc welding process, were characterised for their microstructure and hardness variations across the deposit/substrate interface, and for identification of the principal precipitates present in these hardface deposits. Hardness measurements and electron probe microanalysis (EPMA) across the interface revealed the presence of a dilution zone 2.5 mm wide in the Colmonoy-6 deposit and 1.5 mm wide in the Colmonoy-5 deposit. EPMA and X-ray diffraction studies of the precipitates showed that the blocky type precipitates were chromium borides and the needle-like precipitates were chromium carbides. Also, stress relief heat treatment at 1123 K for 4 h was found to have no significant effect on the hardness of these hardface deposits.
Original languageEnglish
JournalSurface Engineering
Volume21
Issue number4
Pages (from-to)290-296
ISSN0267-0844
DOIs
Publication statusPublished - 2005
Externally publishedYes

Keywords

  • Boride
  • Carbide
  • Dilution
  • Hardness
  • Nickel based alloy

Cite this

Das, C. R., Albert, S. K., Bhaduri, A. K., Sudha, C., & Terrance, A. L. E. (2005). Characterisation of nickel based hardfacing deposits on austenitic stainless steel. Surface Engineering, 21(4), 290-296. https://doi.org/10.1179/174329405X40867