Ti-based nanostructured low-alloy with high strength and ductility

V. Yu Zadorozhnyy, A. Inoue, D. V. Louzguine-Luzgin

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)

Abstract

In the present work we introduce a nanostructured low-alloy-type α+β Ti-based alloy produced by tilt-casting method and subjected to subsequent thermo-mechanical treatment. It demonstrates good mechanical properties corresponding to high-alloy-type Ti-based alloys. After hot dual-axial forging at 900°C Ti94Fe3Cu3 alloy, containing inexpensive alloying elements, showed a high ultimate tensile strength value of 1200MPa and percentage elongation of 9%. It is shown that the intensive forging treatment is equivalent to severe plastic deformation and provides a nanostructured state (≈50-100nm crystal size) of the alloy leading to significantly improved mechanical properties even in low-alloys.

Original languageEnglish
Pages (from-to)82-86
Number of pages5
JournalMaterials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
Volume551
DOIs
Publication statusPublished - 2012 Aug 15

Keywords

  • Grain refinement
  • Isothermal dual-axial forging
  • Mechanical properties
  • Nanostructure
  • Thermomechanical processing
  • Titanium alloys

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