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

Liao, Zhirong, Axinte, Dragos, Mieszala, Maxime, M’Saoubi, Rachid, Abelhafeez, Ali, Michler, Johann and Hardy, Mark (2018) On the influence of gamma prime upon machining of advanced nickel based superalloy. CIRP Annals - Manufacturing Technology . ISSN 0007-8506

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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.

Item Type: Article
Keywords: Nickell Alloy, Machining, Gamma prime phase
Schools/Departments: University of Nottingham, UK > Faculty of Engineering
Identification Number: https://doi.org/10.1016/j.cirp.2018.03.021
Depositing User: Eprints, Support
Date Deposited: 09 May 2018 12:29
Last Modified: 14 Oct 2019 04:30
URI: https://eprints.nottingham.ac.uk/id/eprint/51656

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