Effect of microstructure on the plain and notched fatigue properties of IMI 550 Ti alloy

Tai Man Yue, K. Tabeshfar, P. J E Forsyth

Research output: Journal article publicationJournal articleAcademic researchpeer-review

3 Citations (Scopus)


The fatigue crack initiation and propagation in plain and notched specimens of titanium IMI 550 alloy with different percentages of transformed β-phase has been investigated. The S/N curves for plain specimens having a two-phase α/β microstructure were superior to those having a 100% transformed β microstructure. It is thought that this difference is due to easier crack paths in the β-stabilized samples, which contain very large grains. The notched S/N curves, however, were not dependent on microstructure. The overall crack propagation rates were similar for the three microstructures studied.
Original languageEnglish
Pages (from-to)149-153
Number of pages5
JournalInternational Journal of Fatigue
Issue number3
Publication statusPublished - 1 Jan 1985
Externally publishedYes


  • fatigue
  • fatigue crack propagation
  • IMI 550 titanium alloy
  • microstructure

ASJC Scopus subject areas

  • Modelling and Simulation
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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