Workpiece surface integrity when milling Udimet 720 superalloy

Richard Hood, Jonathan Morris, Sein Soo

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)
264 Downloads (Pure)


The paper details a comprehensive investigation into the surface integrity of Udimet 720 following end milling under different environment conditions (dry, flood, higher pressure and MQL) and cutting speed (25 and 50m/min). Surface roughness (Ra) was < 0.25 μm regardless of tool condition with no white layers detected on any of the samples analysed. Residual stress measurements indicated surface compressive stress of 120 MPa on workpieces milled using new cutters under MQL environment. In contrast, worn tools produced surface tensile stresses of ~80 MPa, with subsurface compressive residual stress of up to ~400 MPa at a depth of 80 μm.
Original languageEnglish
Pages (from-to)283-286
Number of pages4
JournalProcedia CIRP
Publication statusPublished - 2016
Event3rd CIRP Conference on Surface Integrity - Charlotte, United States
Duration: 8 Jun 201610 Jun 2016


  • Milling
  • nickel alloy
  • cutting environment


Dive into the research topics of 'Workpiece surface integrity when milling Udimet 720 superalloy'. Together they form a unique fingerprint.

Cite this