Ti-6Al-4V alloy with an ultrafine-grained microstructure exhibiting low-temperature-high-strain-rate superplasticity

Hiroaki Matsumoto, Kazuki Yoshida, San Hak Lee, Yoshiki Ono, Akihiko Chiba

Research output: Contribution to journalArticle

51 Citations (Scopus)

Abstract

Superplasticity in microcrystalline Ti-6Al-4V (mass%) alloys is exhibited under high temperatures more than 1123 K and low strain rates less than 10 -3 s-1, thereby restricting their practical application to specialized areas such as aerospace. We herein identify a new type of Ti-6Al-4V alloy exhibiting low-temperature (below 973 K)-high-strain-rate (10 -2 s-1) superplasticity. The ultrafine-grained Ti-6Al-4V alloy was produced by simple hot orking of an α′-martensite microstructure alloy, and it has a great potential for application as cost-affordable superplastic Ti alloy.

Original languageEnglish
Pages (from-to)209-212
Number of pages4
JournalMaterials Letters
Volume98
DOIs
Publication statusPublished - 2013 Mar 25

Keywords

  • Deformation processing
  • Superplasticity
  • Titanium-aluminium-vanadium alloy
  • Ultrafine-grained microstructure

ASJC Scopus subject areas

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

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