On the influence of gamma prime upon machining of advanced nickel based superalloy

Zhirong Liao, Dragos Axinte, Maxime Mieszala, Rachid M'Saoubi, Johann Michler, Mark Hardy

Research output: Journal PublicationArticlepeer-review

24 Citations (Scopus)

Abstract

Whilst gamma prime (γ′) phase is the strengthening phase in Ni-based superalloys its influence on machining has been seldom investigated. This paper reports for the first time on the effect of γ′ upon machining of Ni-based superalloys when cutting with parameters yielding different cutting temperature intervals which lead to strengthening/softening effects on the workpiece (sub)surface. In-depth XRD, SEM/FIB, EBSD analysis and unique micro-pillar testing in the workpiece superficial layers indicated that with the increase of γ′ fraction the grain plastic deformation significantly decreased, while specific cutting energy can switch from low to high values influenced by the real cutting temperature.

Original languageEnglish
Pages (from-to)109-112
Number of pages4
JournalCIRP Annals - Manufacturing Technology
Volume67
Issue number1
DOIs
Publication statusPublished - 1 Jan 2018

Keywords

  • Gamma prime phase
  • Machining
  • Nickel Alloy

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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