The influence of cooling rate and alloy composition on the formation of borides during solidification of boron-containing TiAl alloys

Chao Yang, Dawei Hu, Xinhua Wu, Aijun Huang, Mark Dixon

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

2 Citations (Scopus)


Transmission electron microscopy (TEM) and electron backseattered diffraction (EBSD) have been used to identify the crystal structures of long curvy and blocky borides which are formed at different cooling rates in TiAl based alloys. It has been found that for Ti 45A1 2Nb 2Mn 1 B the long curvy borides were either TiB borides with Bf structure or Ti 3B4 borides,and the blocky borides were either TiB borides with B27 struc ture or TiP^ borides. However,for Ti 48A1 2Cr 2Nb IB both long curvy borides and blocky borides were found to be TiB2borides. It is inferred that the crystal structures of borides are both composition and cooling rate related.

Original languageEnglish
Title of host publicationTi 2011 - Proceedings of the 12th World Conference on Titanium
PublisherScience Press
Number of pages5
ISBN (Print)9787030338952
Publication statusPublished - 2012
Externally publishedYes
EventThe World Conference on Titanium 2011 - China National Convention Center, Beijing, China
Duration: 19 Jun 201124 Jun 2011
Conference number: 12th


ConferenceThe World Conference on Titanium 2011
Abbreviated titleTi 2011
Internet address


  • Borides
  • Com position
  • Cooling rate
  • Crystal structures
  • Tial alloys

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