Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8038652 | CIRP Annals - Manufacturing Technology | 2018 | 4 Pages |
Abstract
Whilst gamma prime (γâ²) 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 γⲠupon 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 γⲠfraction the grain plastic deformation significantly decreased, while specific cutting energy can switch from low to high values influenced by the real cutting temperature.
Keywords
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Physical Sciences and Engineering
Engineering
Industrial and Manufacturing Engineering
Authors
Zhirong Liao, Dragos Axinte, Maxime Mieszala, Rachid M'Saoubi, Johann Michler, Mark Hardy,