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Three-dimensional morphology and composition of omega precipitates in a binary titanium–molybdenum alloy

Authors
Journal
Scripta Materialia
1359-6462
Publisher
Elsevier
Publication Date
Volume
61
Issue
7
Identifiers
DOI: 10.1016/j.scriptamat.2009.06.006
Keywords
  • Titanium–Molybdenum Alloy
  • Atom Probe Tomography
  • Omega
  • Mo-Rich Core
Disciplines
  • Medicine

Abstract

Using atom probe tomography, the three-dimensional morphology and composition of nanoscale omega precipitates in a simple binary titanium–molybdenum alloy have been uniquely determined. The results include the average composition of the omega precipitates and the partitioning of Mo across the ω/β interfaces. These investigations also revealed compositional inhomogeneity within the nanoscale precipitates, with the presence of a Mo-rich core, presumably arising from the relatively slow rate of Mo rejection during isothermal growth of these omega precipitates.

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