An investigation of cutting forces and cutting temperatures during laser-assisted machining of the Ti-6Cr-5Mo-5V-4Al beta titanium alloy

Rashid, R. A. Rahman, Sun, S., Wang, G. and Dargusch, M. S. (2012) An investigation of cutting forces and cutting temperatures during laser-assisted machining of the Ti-6Cr-5Mo-5V-4Al beta titanium alloy. International Journal of Machine Tools and Manufacture, 63 : 58-69.


Author Rashid, R. A. Rahman
Sun, S.
Wang, G.
Dargusch, M. S.
Title An investigation of cutting forces and cutting temperatures during laser-assisted machining of the Ti-6Cr-5Mo-5V-4Al beta titanium alloy
Journal name International Journal of Machine Tools and Manufacture  (ERA 2012 Listed)    (ERA 2010 Rank A*)   Check publisher's open access policy
Publication date 2012-12
Sub-type Article
DOI 10.1016/j.ijmachtools.2012.06.004
Volume number 63
ISSN 0890-6955; 1879-2170
Start page 58
End page 69
Total pages 12
Place of publication New York, United States
Publisher Elsevier
Collection year 2013
Language eng
Abstract Beta titanium alloys are increasingly attractive because of their superior combination of properties such as high strength and fracture toughness. These alloys are finding potential applications in the manufacture of aircraft components such as landing gear, springs and nacelles. Innovative machining solutions are required to reduce the cost of production of beta titanium components and improve cycle time. Previous research has reported that these alloys have poor machinability compared to the more common Ti–6Al–4V titanium alloy. This paper aims to investigate the behaviour of the Ti–6Cr–5Mo–5V–4Al beta titanium alloy using laser assisted machining (LAM). The LAM technique utilises a laser beam which is applied onto the workpiece surface locally in front of the cutting tool in order to provide external heat to significantly reduce the yield strength of the material. This reduces the cutting forces required to machine the workpiece and increases metal removal rates. In this study, the effect of the laser beam on the cutting forces and cutting temperature is critically analysed over a wide range of feed rates and cutting speeds and is compared to the results obtained from conventional (un-assisted) machining of this beta titanium alloy. This investigation has shown that LAM significantly reduces cutting forces within a certain range of cutting parameters. Maximum benefit was achieved at feed rates between 0.15 and 0.25 mm/rev and cutting speeds between 25 and 100 m/min at a laser power of 1200 W during LAM of the Ti–6Cr–5Mo–5V–4Al beta titanium alloy.
Keyword Laser assisted machining
Beta titanium alloy
Feed rate
Cutting speed
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article
Collections: School of Mechanical & Mining Engineering Publications
Official 2013 Collection
 
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