Coarsening of oxide inclusions in low alloy steel welds

S. S. Babu, S. A. David, Tarasankar Debroy

Research output: Contribution to journalArticle

20 Scopus citations

Abstract

Oxide inclusions that form in low alloy steel weld metal influence the microstructure development. This work investigates the mechanisms of inclusion coarsening in low alloy steel melts considering fluid flow in the melt. Controlled isothermal localised melting experiments on low alloy steel weld metal samples showed rapid inclusion coarsening as a result of collision and coalescence. The average diameter of the inclusions increased rapidly, resulting in a decrease in the overall number density of the inclusions as a function of holding time. These results are examined to understand weld metal inclusion formation in the presence of convective fluid flow. Investigation of the feasibility of oxide formation showed no oxidation reaction in the solid state.

Original languageEnglish (US)
Pages (from-to)17-27
Number of pages11
JournalScience and Technology of Welding and Joining
Volume1
Issue number1
DOIs
StatePublished - Jan 1 1996

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

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