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; Hardy, Mark

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.

Citation

Liao, Z., Axinte, D., Mieszala, M., M’Saoubi, R., Abelhafeez, A., Michler, J., & Hardy, M. (2018). On the influence of gamma prime upon machining of advanced nickel based superalloy. CIRP Annals - Manufacturing Technology, 67(1), 109-112. https://doi.org/10.1016/j.cirp.2018.03.021

• Journal Article Type: Article
• Acceptance Date: Apr 14, 2018
• Online Publication Date: Apr 14, 2018
• Publication Date: 2018
• Deposit Date: May 9, 2018
• Publicly Available Date: Oct 15, 2019
• Journal: CIRP Annals
• Print ISSN: 0007-8506
• Electronic ISSN: 1726-0604
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 67
• Issue: 1
• Pages: 109-112
• DOI: https://doi.org/10.1016/j.cirp.2018.03.021
• Keywords: Nickell Alloy, Machining, Gamma prime phase
• Public URL: https://nottingham-repository.worktribe.com/output/925200
• Publisher URL: https://www.sciencedirect.com/science/article/pii/S0007850618300210
• Contract Date: May 9, 2018