Ordering in α titanium alloys

Anna Radecka, Vassili Vorontsov, James Coakley, Khandaker Mezanur Rahman, Paul A.J. Bagot, T. L. Martin, M P Moody, Ian Jones, Trevor Lindley, David Rugg, David Dye

Research output: Contribution to conferenceProceedingpeer-review


Ti-7Al, Ti-6Al-4V and IMI 834 alloys were heat treated at a range of temperatures between 500 and 700 oC for times up to 28 days. The formation of the ordered α2 (Ti3Al) phase within the α matrix was identified using electron diffraction, dark field transmission electron microscopy (TEM) and atom probe tomography (APT). It was found that the precipitation of the α2 phase is dependent upon on the addition of alloying elements such as V, Sn, Si, Zr to the Ti-Al alloy. A comparison of the rate of α2 growth in binary Ti-7Al, ternary Ti-6Al-4V and IMI 834 is presented. The investigation revealed that in multi-component alloy systems where more than one alloying element forming the α2 phase is present, precipitation of ordered clusters is much faster than in the binary alloy.
Original languageEnglish
Number of pages8
Publication statusPublished - 2 May 2016
EventTi-2015: The 13th World Conference on Titanium - California, San Diego, United States
Duration: 16 Aug 201520 Aug 2015


ConferenceTi-2015: The 13th World Conference on Titanium
Country/TerritoryUnited States
CitySan Diego


  • IMI 834 alloys
  • Ti alloys
  • ordering
  • atom probe tomography (APT)
  • transmission electron microscopy (TEM)


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