Tool life and wear mechanisms in laser assisted milling Ti-6Al-4V

Bermingham, M. J., Sim, W. M., Kent, D., Gardiner, S. and Dargusch, M. S. (2015) Tool life and wear mechanisms in laser assisted milling Ti-6Al-4V. Wear, 322-323 151-163. doi:10.1016/j.wear.2014.11.001

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Author Bermingham, M. J.
Sim, W. M.
Kent, D.
Gardiner, S.
Dargusch, M. S.
Title Tool life and wear mechanisms in laser assisted milling Ti-6Al-4V
Journal name Wear   Check publisher's open access policy
ISSN 0043-1648
Publication date 2015-01-15
Year available 2014
Sub-type Article (original research)
DOI 10.1016/j.wear.2014.11.001
Volume 322-323
Start page 151
End page 163
Total pages 13
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Language eng
Abstract Thermally assisted machining processes are gaining popularity among researchers and engineers as a method for improving the machinability of difficult-to-cut materials such as titanium. The process of artificially introducing heat to the cutting zone is reported to have many benefits; however, it remains unclear whether the process offers any tool life improvements during milling Ti–6Al–4V when compared to conventional milling processes. This paper compares the tool life during laser assisted milling, dry milling, milling with flood emulsion, milling with minimum quantity lubrication (MQL) and a hybrid laser+MQL process. It is found that conventional coolants offer superior tool life at the standard cutting speeds recommended by the tooling manufacturer, but at higher speeds the coolant deteriorates tool life due to thermal shock/fatigue. Despite this, laser assisted machining performed poorly and exacerbated thermally related tool wear mechanisms such as adhesion, diffusion and attrition. Hybrid laser+MQL substantially improved tool life by suppressing the thermal wear processes while also preventing thermal fatigue on the cutting tool.
Keyword Non-ferrous metals
Laser processing
Cutting tools
Wear testing
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Published online ahead of print 15 Nov 2014

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2015 Collection
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Citation counts: TR Web of Science Citation Count  Cited 6 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 9 times in Scopus Article | Citations
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