Effects of boron on microstructure in cast titanium alloys

M. J. Bermingham, S. D. McDonald, K. Nogita, D. H. St. John, M. S. Dargusch

Research output: Contribution to journalArticlepeer-review

152 Citations (Scopus)


Trace additions of boron to commercial purity titanium result in significant microstructural changes. Changes include the promotion of dendritic growth and refinement in both the prior-β and α-grain size. Boron partitions strongly on solidification and TiB intermetallics are observed throughout the microstructure, confined to interdendritic regions. This strong partitioning of solute causes prior-β grain refinement, and the presence of TiB intermetallics and/or the increased β-grain boundary surface area associated with the change in β-grain morphology assists nucleation of the α-phase.

Original languageEnglish
Pages (from-to)538-541
Number of pages4
JournalScripta Materialia
Issue number5
Publication statusPublished - Sept 2008
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys


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