Importance of microstructural stability in creep resistance of lamellar TiAl alloys

Masahiro Yamaguchi, Hanliang Zhu, Mayumi Suzuki, Kouichi Maruyama, Fritz Appel

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

Creep behavior of lamellar Ti-45Al-8Nb-0.2C (in mol%) alloy was studied paying special attention to microstructural degradation during creep. Minimum creep rate of Ti-45Al-Nb-C is reduced to 25% of that of binary Ti-45Al. Nb retards recovery of dislocations. Nb and C addition stabilizes lamellar microstructure. As a result, lower minimum creep rate and slower creep acceleration in tertiary creep are attained in the TiAl alloy with Nb and C.

Original languageEnglish
Pages (from-to)517-520
Number of pages4
JournalMaterials Science and Engineering A
Volume483-484
Issue number1-2 C
DOIs
Publication statusPublished - 2008 Jun 15

Keywords

  • Creep deformation
  • Lamellar structure
  • Microstructural degradation
  • Strengthening
  • Titanium aluminide

ASJC Scopus subject areas

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

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