Investigation of surface topography and its deterioration resulting from tool wear evolution when dry turning of titanium alloy Ti-6Al-4V

Tool wear inevitably occurs in dry cutting titanium alloy Ti-6Al-4V, and it causes the machined surface deterioration. This research aimed to synthetically investigate surface topography characterization with emphasizing tool flank wear effects in dry turning titanium alloy Ti-6Al-4V. The surface an...

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Bibliographic Details
Published in:Tribology international 2019-07, Vol.135, p.130-142
Main Authors: Liang, Xiaoliang, Liu, Zhanqiang, Yao, Gonghou, Wang, Bing, Ren, Xiaoping
Format: Article
Language:English
Subjects:
3D roughness parameters
Cutting wear
Deterioration
Evolution
Grooves
Machine tools
Parameters
Plastic flow
Plowing
Surface analysis (chemical)
Surface defects
Ti-6Al-4V
Titanium alloys
Titanium base alloys
Tool wear
Topography
Turning (machining)
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Summary:Tool wear inevitably occurs in dry cutting titanium alloy Ti-6Al-4V, and it causes the machined surface deterioration. This research aimed to synthetically investigate surface topography characterization with emphasizing tool flank wear effects in dry turning titanium alloy Ti-6Al-4V. The surface analysis techniques including three dimension (3D) surface parameters and surface defects were implemented to assess surface topographies by using confocal laser scanning microscope and scanning electron microscope. A detailed comparison of 3D surface topography in terms of amplitude, spatial, hybrid, functional, and volume parameters was analyzed under various tool wear stages. The undesirable surface defects, such as feed marks, plowing grooves, side flow, plastic flow, and adhered material particles, surface tearing, surface burning, scratch marks were discussed on the basis of tool wear patterns and additional thermo-mechanical loads. Experimental findings indicated that a good correlation was presented between surface topography evolution and tool wear effects. [Display omitted] •Surface topography induced by tool wear in dry turning Ti-6Al-4V was investigated.•3D amplitude, spatial, hybrid, functional, and volume parameters were analyzed.•Surface defects were discussed based on thermo-mechanical loads due to tool wear.•Machined surface topography evolution was closely allied to tool wear progress.
ISSN:0301-679X
1879-2464
DOI:10.1016/j.triboint.2019.02.049