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The investigation on lamellar microstructure transformation and stability in TiAl based intermatellics

  • Wei Zhang*
  • , Yue Ma
  • , Shengkai Gong
  • *Corresponding author for this work
  • Beihang University

Research output: Contribution to journalArticlepeer-review

Abstract

Microstructure stability in fully lamellar (FL) structure TiAl based intermatellics have been studied. The experiment results have shown that the smaller the lamellar spacing is, the more instable the lamellar structure is. The distinct lamellar spheroidization occurs at 1150°C holding for 24h. This phenomena may be caused by lamellar coarsening and decomposition. The linear residual β phase distributed in the Ti-47A1-2Cr-2Nb alloy may prevent lamellar spheroidization and improves the stability of lamellar structure significantly.

Original languageEnglish
Pages (from-to)2279-2284
Number of pages6
JournalInternational Journal of Modern Physics B
Volume24
Issue number15-16
DOIs
StatePublished - 30 Jun 2010

Keywords

  • TiAl based alloy
  • high temperature aging treatment
  • lamellar spacing

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