Anomalous growth of antiphase domains in Ti3Al

Yuichiro Koizumi, Takeshi Fujita, Yoritoshi Minamino

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Anomalous antiphase domain (APD) growth was observed in Ti3Al after prolonged annealing, and its mechanism was investigated by detailed transmission electron microscopy observation. Significant numbers of dislocations were observed around anomalously coarsened APDs, and APD boundaries (APDBs) were terminated with dislocations having non-c-axis components of Burgers vectors (b) parallel to the phase-shift vector R of the APDBs. This implies that the anomalous APD coarsening occurs via APDB elimination by motion of superpartial dislocations whose bs can cancel the R of APDBs.

Original languageEnglish
Pages (from-to)144-147
Number of pages4
JournalScripta Materialia
Volume60
Issue number3
DOIs
Publication statusPublished - 2009 Feb

Keywords

  • Annealing
  • Dislocation
  • Interface antiphase
  • Titanium aluminides
  • Transmission electron microscopy (TEM)

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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