Enhancement in Ti-6Al-4V sintering via nanostructured powder and spark plasma sintering

K. Crosby, L. L. Shaw, C. Estournes, G. Chevallier, A. W. Fliflet, M. A. Imam

Research output: Contribution to journalArticlepeer-review


Studies are performed to enhance low temperature sintering of Ti-6Al-4V. High energy ball milling is found to be effective in lowering the sintering temperature through the mechanisms of particle size reduction and nanograin formation. The former reduces the diffusion distance for densification, whereas the latter introduces an additional densification mechanism allowing mass transport from the interior of the particle to the neck zone. Together, these two effects can reduce the onset temperature for densification by about 300uC. Spark plasma sintering can further improve low temperature sintering when compared with radiant heat sintering and microwave sintering. The enhanced densification is discussed on the basis of the applied pressure (50 MPa) and the intrinsic joule effect that leads to increase in the local temperature at the contact point between particles.

Original languageEnglish (US)
Pages (from-to)147-154
Number of pages8
JournalPowder Metallurgy
Issue number2
StatePublished - Apr 2014
Externally publishedYes


  • Ball milling
  • Nanomaterials
  • Sintering
  • Titanium alloys

ASJC Scopus subject areas

  • Ceramics and Composites
  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry


Dive into the research topics of 'Enhancement in Ti-6Al-4V sintering via nanostructured powder and spark plasma sintering'. Together they form a unique fingerprint.

Cite this