Effect of grain size on tensile properties of fine-grained metastable β titanium alloys fabricated by stress-induced martensite and its reverse transformations

Ming Hui Cai, Chan Young Lee, Young Kook Lee

Research output: Contribution to journalArticle

53 Citations (Scopus)

Abstract

Fine-grained Ti-16V-3.5Al-3Sn alloys were fabricated through the stress-induced martensite and its reverse transformations. All tensile curves of the alloys showed double yielding, high strain hardening and low trigger stress for martensitic transformation. As the grain size increased, the trigger stress decreased and then increased again, while the dimples on the fractured surface became large and non-uniform. The three-stage strain hardening and high strain-hardening rate were closely associated with the stress-induced β to α″ martensitic transformation and dislocation hardening.

Original languageEnglish
Pages (from-to)606-609
Number of pages4
JournalScripta Materialia
Volume66
Issue number8
DOIs
Publication statusPublished - 2012 Apr 1

All Science Journal Classification (ASJC) codes

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

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