Understanding the tool wear mechanism during thermally assisted machining Ti-6Al-4V

Bermingham, M. J., Palanisamy, S. and Dargusch, M. S. (2012) Understanding the tool wear mechanism during thermally assisted machining Ti-6Al-4V. International Journal of Machine Tools & Manufacture, 62 76-87. doi:10.1016/j.ijmachtools.2012.07.001


Author Bermingham, M. J.
Palanisamy, S.
Dargusch, M. S.
Title Understanding the tool wear mechanism during thermally assisted machining Ti-6Al-4V
Journal name International Journal of Machine Tools & Manufacture   Check publisher's open access policy
ISSN 0890-6955
1879-2170
Publication date 2012-11
Sub-type Article (original research)
DOI 10.1016/j.ijmachtools.2012.07.001
Volume 62
Start page 76
End page 87
Total pages 12
Place of publication New York, NY, United States
Publisher Elsevier
Collection year 2013
Language eng
Abstract Thermally assisted machining is an emerging manufacturing process for improving the productivity when machining many difficult-to-cut engineering materials. Traditionally the process is reserved for very hard and high strength materials where abrasive and notching wear mechanisms cripple tool longevity. Recently there has been interest in using the process to machine titanium alloys and published reports indicate that machinability is improved, namely though a reduction in cutting forces. However, there is still ambiguity about whether the process is beneficial for tool life and the specific wear mechanisms for carbide tooling remain unknown. This work characterises the tool life and wear mechanism for two uncoated carbide tools when turning Ti-6Al-4V at high speed. While it is observed that thermally assisted machining reduces the cutting forces, it is found that the process has a deleterious effect on tool life because the dominant wear mechanism associated with diffusion is exacerbated during thermally enhanced machining. The process is compared against coolant technologies from the literature using identical tooling and cutting parameters and it is found that cooling the tool suppresses adhesion-diffusion wear and significantly prolongs tool life.
Keyword Titanium
Machining
Tool life
Wear mechanism
Titanium-Alloys
Machinability
Inconel-718
Temperature
Ceramics
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 2013 Collection
 
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Created: Wed, 03 Apr 2013, 07:58:48 EST by Katie Gollschewski on behalf of School of Mechanical and Mining Engineering