Workpiece surface integrity when slot milling γ-TiAl intermetallic alloy

Richard Hood, David K. Aspinwall*, Sein Leung Soo, Andrew L. Mantle, Donka Novovic

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)
23 Downloads (Pure)


Slot milling is presented as a potential manufacturing route for aerospace component feature production when machining γ-TiAl intermetallic alloy Ti-45Al-2Mn-2Nb + 0.8 vol.% TiB2XD using 2 mm diameter AlTiN coated WC ball nose end milling cutters. When operating with flood cutting fluid at v = 88 m/min, f = 0.05 mm/tooth, d = 0.2 mm, maximum flank wear was ∼65 μm after 25 min. SEM micrographs of slot surfaces show re-deposited/adhered and smeared workpiece material to a length of ∼50 μm. Brittle fracture of the slot edges was restricted to <10 μm with sporadic top burr formation observed up to ∼20 μm. Cross sectional micrographs of the slot sidewalls showed bending of the lamellae limited to within 5 μm.

Original languageEnglish
Pages (from-to)53-56
Number of pages4
JournalCIRP Annals - Manufacturing Technology
Issue number1
Publication statusPublished - 1 Jan 2014


  • Slot milling
  • Surface integrity
  • Titanium

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering


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