Superelasticity in Ti-10V-2Fe-3Al alloys with nitrogen addition

T. Furuhara, S. Annaka, Y. Tomio, T. Maki

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52 Citations (Scopus)

Abstract

Metastable β titanium alloy Ti-10V-2Fe-3Al is known to exhibit a shape memory effect due to a stress-induced α″ martensitic transformation at room temperature. In the present study, nitrogen (N) was added to this alloy to strengthen the β matrix. The effect on the deformation behavior of β phase was studied. Thermally induced martensite is formed in the N-free alloy by quenching after β solutionizing but it is not observed in the alloys containing nitrogen of more than 0.1 mass%. Superelasticity due to stress-induced formation of α″ martensite was observed in the 0.1 and 0.2N alloys. N addition is moreover effective in increasing a true elastic strain up to 1% by strengthening of the β matrix.

Original languageEnglish
Pages (from-to)825-829
Number of pages5
JournalMaterials Science and Engineering A
Volume438-440
Issue numberSPEC. ISS.
DOIs
Publication statusPublished - 2006 Nov 25

Keywords

  • Nitrogen
  • Shape memory effect
  • Stress-induced martensitic transformation
  • Superelasticity
  • β Titanium alloy

ASJC Scopus subject areas

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

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