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

118 Citations (Scopus)

Abstract

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
Volume59
Issue number5
DOIs
Publication statusPublished - Sep 1 2008

All Science Journal Classification (ASJC) codes

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

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