Cutting force, chip formation, and tool wear during the laser-assisted machining a near-alpha titanium alloy BTi-6431S

Gao, Yanfeng, Wang, Gui, Bermingham, Michael J. and Dargusch, Matthew S. (2015) Cutting force, chip formation, and tool wear during the laser-assisted machining a near-alpha titanium alloy BTi-6431S. International Journal of Advanced Manufacturing Technology, 79 9-12: 1949-1960. doi:10.1007/s00170-015-6917-5


Author Gao, Yanfeng
Wang, Gui
Bermingham, Michael J.
Dargusch, Matthew S.
Title Cutting force, chip formation, and tool wear during the laser-assisted machining a near-alpha titanium alloy BTi-6431S
Journal name International Journal of Advanced Manufacturing Technology   Check publisher's open access policy
ISSN 0268-3768
1433-3015
Publication date 2015-08
Year available 2015
Sub-type Article (original research)
DOI 10.1007/s00170-015-6917-5
Open Access Status Not yet assessed
Volume 79
Issue 9-12
Start page 1949
End page 1960
Total pages 12
Place of publication London, United Kingdom
Publisher Springer U K
Collection year 2016
Language eng
Formatted abstract
BTi-6431S is a promising material for aero-engine and supersonic speed aircraft parts application. However, the machinability of the alloy is relatively poor due to its high mechanical properties at high temperature. Laser-assisted machining (LAM) is a promising solution to reduce the cutting pressures when machining difficult-to-cut materials, such as Ti-6Al-4V alloy. In this paper, the machinability of this near-alpha alloy has been investigated in terms of cutting force, chip formation, and tool wear in different laser power conditions over a range of cutting parameters. This investigation shows that the BTi-6431S alloy is considerably less responsive to LAM compared to Ti-6Al-4V, and the tool life was not extended by using the LAM process for BTi-6431S. The main tool failure mode is flank wear and rake face chipping under conventional machining (CM) condition, while the diffusion wear is the main tool failure mode under LAM. The machinability of BTi-6431S near-alpha titanium alloy is significantly lower than that of Ti-6Al-4V alloy.
Keyword Near alpha titanium alloy
Laser assisted machining
Cutting forces
Chip formation
Tool wear
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2016 Collection
 
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