Effect of Antiphase Domain Boundaries on Prism Slip in Ti3Al Single Crystals

Yuichiro Koizumi, Y. Minamino, N. Tsuji, T. Nakano, Y. Umakoshi

Research output: Contribution to journalConference articlepeer-review

16 Citations (Scopus)


Effect of antiphase domain boundaries (APDBs) on yielding and dislocation structure were investigated in Ti3Al single crystals oriented for prism slip. The yield stress greatly depended on the size of antiphase domains (APDs). The yield stress of Ti3Al with the average APD size of 35nm was about six times higher than that of Ti3Al without APDB. Single dislocations (isolated superpartial dislocations) were observed in the deformed Ti3Al single crystal with APD sizes smaller than 100nm, while superdislocation pairs were observed in those with larger APDs. The mechanism of the interaction between the prism dislocations and APDBs is discussed.

Original languageEnglish
Pages (from-to)267-272
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
Publication statusPublished - 2003 Nov 11
EventDefect Properties and Related Phenomena in Intermetallic Alloys - Boston, MA, United States
Duration: 2002 Dec 32002 Dec 5

ASJC Scopus subject areas

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


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