O-Lattice analysis of β phase precipitates in α2 phase of TiAlWSiB alloy

Hong Zhang, Chunlin Chen, Lianlong He, Lanzhang Zhou, Jianting Guo, Hengqiang Ye

Research output: Contribution to journalArticlepeer-review


TEM analyses were performed on Ti-47Al-2W-0.5Si-0.5B (ABB-23) alloy. There were β phase precipitates in α2 phase because of the addition of β stabilizer W element. The orientation relationship between β and α2 phases is (0001)α2//{110}β, >112̄0>α2 {111}β β precipitates exhibit six different lath directions when the incident electron beam is normal to the (0001)α2//{110}β plane. The lath growth directions of β precipitates are predicted by the O Lattice model.

Original languageEnglish
Pages (from-to)577-582
Number of pages6
JournalCailiao Yanjiu Xuebao/Chinese Journal of Materials Research
Issue number6
Publication statusPublished - 2003 Dec
Externally publishedYes


  • Foundational discipline in materials science
  • O Lattice model
  • TiAl base alloy
  • β precipitate

ASJC Scopus subject areas

  • Materials Science(all)


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