Novel high strength titanium-titanium composites produced using field-assisted sintering technology (FAST)

E. L. Calvert*, A. J. Knowles, J. J. Pope, D. Dye, M. Jackson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)
173 Downloads (Pure)

Abstract

To increase the strength of titanium alloys beyond that achievable with α-β microstructures, alternative reinforcing methods are necessary. Here, field-assisted sintering technology (FAST) has been used to produce a novel Ti-5Al-5Mo-5V-3Cr (Ti-5553) metal-matrix-composite (MMC) reinforced with 0-25 wt.% of a ∼2 GPa yield strength TiFeMo alloy strengthened by ordered body-centred cubic intermetallic and ω phases. The interdiffusion region between Ti-5553 and TiFeMo particles was studied by modelling, electron microscopy, and nanoindentation to examine the effect of graded composition on mechanical properties and formation of α, intermetallic, and ω phases, which resulted in a > 200 MPa strengthening benefit over unreinforced Ti-5553.

Original languageEnglish
Pages (from-to)51-57
Number of pages7
JournalScripta Materialia
Volume159
Early online date13 Sept 2018
DOIs
Publication statusPublished - 15 Jan 2019

Keywords

  • Metal matrix composite
  • Omega
  • Phase transformations
  • Spark plasma sintering
  • Titanium alloys

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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