Enhancement of athermal α″ martensitic transformation in Ti-10V-2Fe-3Al alloy due to high-speed hot deformation

Toshiyuki Akanuma, Hiroaki Matsumoto, Shigeo Sato, Akihiko Chiba, Ikuhiro Inagaki, Yoshihisa Shirai, Takashi Maeda

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

This work examines the origin of the athermal α″ martensitic transformation in Ti-10V-2Fe-3Al alloys arising from high-speed hot deformation on the basis of chemical thermodynamics and the change in stored energy introduced by deformation. The value of the martensitic transformation starting temperature (M s) is strongly affected by various microstructural factors. This work reveals that a high accumulation of dislocation density, greater than 10 15 m -2, arising from high-speed deformation, resulted in an enhancement of athermal α″ martensitic transformations.

Original languageEnglish
Pages (from-to)21-24
Number of pages4
JournalScripta Materialia
Volume67
Issue number1
DOIs
Publication statusPublished - 2012 Jul
Externally publishedYes

Keywords

  • Dislocation density
  • Stored energy
  • Titanium alloy
  • α″ Martensitic transformation

ASJC Scopus subject areas

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

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