Effect of B2-ordered phase on the deformation behavior of Ti-Mo-Al alloys at elevated temperature

Yuanyuan Lu, Jyunpei Yamada, Junya Nakamura, Kyosuke Yoshimi, Hidemi Kato

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

The microstructures and mechanical properties of as-cast Ti-Mo-Al alloys with various compositions were systematically investigated in this study, aiming to explore the potentials of B2-ordered phase (β2) in high temperature applications. According to the experimental results, these as-cast Ti-Mo-Al alloys were mainly composed of β2phase and contained a large number of dislocation walls and sub-grain boundaries. Overall they exhibited a high level of compressive strength at 1073 K, with the maximum value approaching ∼879 MPa. The impressive mechanical properties of β2-dominating Ti-Mo-Al alloys are related to the excellent stability of B2 structure and extensive dislocation entanglements at elevated temperature.

Original languageEnglish
Pages (from-to)130-135
Number of pages6
JournalJournal of Alloys and Compounds
Volume696
DOIs
Publication statusPublished - 2017

Keywords

  • High temperature alloys
  • Molybdenum
  • Titanium

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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