Publications

Effect of tool wear evolution on chip formation during dry machining of Ti-6Al-4V alloy

Dargusch, M.S. and Sun, S. and Kim, J.W. and Li, T. and Trimby, P. and Cairney, J.

INTERNATIONAL JOURNAL OF MACHINE TOOLS AND MANUFACTURE
Volume: 126 Pages: 13-17
DOI: 10.1016/j.ijmachtools.2017.12.003
Published: 2018

Abstract
The complex microstructure of segmented chips and the changing deformation mechanisms during the machining of the Ti-6Al-4V alloy for a given cutting tool have been explored. Chip geometry and microstructure were investigated for increasing volumes of material removed at a cutting speed at which the tool characteristically develops gradual flank wear. The degree of chip segmentation and deformation mode changed significantly as machining progressed from using a new tool towards a worn tool. Chip formation processes when machining near the end of the cutting tool life is characterised by increasing amounts of twinning formed through both tension and compression. © 2017 Elsevier Ltd

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