Hole-making Process and Its impacts on the Fatigue Response of Ti -6Al-4V Aircraft Alloy

Dan Sun, Daniel Keys, Yan Jin, Savko Malinov, Qing Zhao, Xuda Qin

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)
403 Downloads (Pure)


In this work, the impact of conventional drilling and helical milling processes on the fatigue response Ti-6Al-4V (grade 5 titanium alloy) has been presented. Results show that the work pieces produced by helical milling has a 119% longer fatigue life compared with the drilled pieces under dry machining condition, and a 96% longer fatigue life for helical milled piece under lubricated condition. The use of cutting fluid has led to longer fatigue lives – 15% longer for drilling and 3% longer for helical milling. Other results such as the machined surface roughness, alloy surface and sub-surface microstructures have also been studied in details.
Original languageEnglish
Pages (from-to)289-292
JournalProcedia CIRP
Early online date16 Nov 2016
Publication statusPublished - 2016
Event9th International Conference on Digital Enterprise Technology - DET 2016 – “Intelligent Manufacturing in the Knowledge Economy Era - Nanjing, China
Duration: 29 Mar 201631 Mar 2016
http://www.detconference.org/det-2016/ (Link to conference details online)


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